WO2012165190A1 - Dispositif d'éclairage, unité d'étagère munie du dispositif d'éclairage et vitrine - Google Patents

Dispositif d'éclairage, unité d'étagère munie du dispositif d'éclairage et vitrine Download PDF

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Publication number
WO2012165190A1
WO2012165190A1 PCT/JP2012/062917 JP2012062917W WO2012165190A1 WO 2012165190 A1 WO2012165190 A1 WO 2012165190A1 JP 2012062917 W JP2012062917 W JP 2012062917W WO 2012165190 A1 WO2012165190 A1 WO 2012165190A1
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WIPO (PCT)
Prior art keywords
light
light guide
shelf
shelf board
angle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2012/062917
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English (en)
Japanese (ja)
Inventor
佳恵 清水
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Konica Minolta Advanced Layers Inc
Original Assignee
Konica Minolta Advanced Layers Inc
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Filing date
Publication date
Application filed by Konica Minolta Advanced Layers Inc filed Critical Konica Minolta Advanced Layers Inc
Publication of WO2012165190A1 publication Critical patent/WO2012165190A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • F21V33/0004—Personal or domestic articles
    • F21V33/0012—Furniture
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F11/00—Arrangements in shop windows, shop floors or show cases
    • A47F11/06—Means for bringing about special optical effects
    • A47F11/10—Arrangements of light sources
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00—Show cases or show cabinets
    • A47F3/001—Devices for lighting, humidifying, heating, ventilation
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0028—Light guide, e.g. taper
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0091—Positioning aspects of the light source relative to the light guide
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2220/00—General furniture construction, e.g. fittings
    • A47B2220/0075—Lighting
    • A47B2220/0077—Lighting for furniture, e.g. cupboards and racks
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F5/00—Show stands, hangers, or shelves characterised by their constructional features
    • A47F5/0043—Show shelves
    • A47F5/0068—Shelf extensions, e.g. fixed on price rail
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/40—Lighting for industrial, commercial, recreational or military use
    • F21W2131/405—Lighting for industrial, commercial, recreational or military use for shop-windows or displays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to an illumination device for a shelf board and a showcase provided with the illumination apparatus.
  • the illumination apparatus suitable for illumination of a product arranged at the tip of the shelf board and displayed on the shelf board, and the illumination device
  • the present invention relates to a shelf unit equipped with a device and a showcase.
  • Fluorescent lamps have been widely used to illuminate products placed in showcases and displayed in showcases.
  • Fluorescent lamps are generally used as illumination by converting electric energy into visible radiation, infrared radiation, and ultraviolet radiation and emitting visible light.
  • heat loss occurs, there is a problem that not only the fluorescent lamp itself but also the displayed product is heated by the radiant heat from the fluorescent lamp, and the light source of the lighting device for the showcase is not necessarily preferable. That's not true.
  • LEDs Light Emitting Diodes
  • the blue LED chip was developed, a white LED light source that emits white light by combining the blue LED chip and a phosphor that is excited by light from the LED chip and emits excitation light of a predetermined wavelength, A white LED light source that synthesizes white light using three primary color LED chips of a blue LED chip, a green LED chip, and a red LED chip has been developed.
  • an LED illumination device provided with this white LED light source is used as the illumination device.
  • an illumination device for display shelves such as showcases
  • LED light sources that consume less power and generate less heat.
  • it is arranged at the end of a shelf board to illuminate products displayed on the shelf.
  • a showcase provided with LED lighting has already been proposed (see, for example, Patent Document 1).
  • a guard installed to prevent the product from falling is composed of a translucent plate material, and light from the LED lighting device is directed from the upper end of the guard to the product on the shelf. Irradiating.
  • the shelf lighting device is required to have uniform illumination with no illuminance unevenness on the product. Moreover, as a lighting device for a shelf board such as a showcase, there is a high possibility that water or dust will be applied depending on the installation location. Moreover, since the guard which is a light guide is exposed to the outside, it is easily damaged. If water droplets, dust, or scratches are attached to the surface of the light guide, light is emitted from the light guide path at that portion, and illumination unevenness occurs, which is not preferable.
  • Patent Document 1 uses a guard for preventing fall as a light guide for the lighting device, the guard is exposed, easily damaged, and easily attached to water and dust. It is not preferable from the viewpoint of waterproofness and dustproofness.
  • the observer since the high-intensity illumination light emitted from the upper end surface of the guard is directed to the observer side, the observer is dazzling and cannot comfortably observe the product.
  • the lighting device that is used by being attached to the tip of a shelf board such as a showcase has a light distribution characteristic that can efficiently illuminate products displayed on the shelf board, and further has a waterproof / dustproof function.
  • it is a shelf unit and a showcase that are not dazzling and can be easily observed, can be easily cleaned without entering water or dust during cleaning, and can be stably illuminated.
  • the present invention has been made in view of the above circumstances, and in an illuminating device that is used by being attached to the tip of a shelf board, a light distribution characteristic capable of efficiently illuminating a product displayed on the shelf board,
  • An object of the present invention is to provide a lighting device having a dust-proof function, and to provide a shelf unit and a showcase that are equipped with this lighting device, can illuminate products with high efficiency, and can stably illuminate without entering water or dust.
  • the present invention provides a light source that is attached to the front end of a shelf board and is arranged along the width direction when viewed from the front of the shelf board, and light emitted from the light source is incident An incident surface, a light guide path for guiding light incident from the incident surface in a direction orthogonal to the width direction, and the guided light is emitted toward a product side displayed on the shelf board.
  • a waterproof cover having a light transmitting property and a waterproof property with an air layer in between, and having an outer surface of the waterproof cover facing the product side
  • the waterproof cover is provided on the first exit surface for illuminating the product side displayed on the shelf board, it is possible to prevent water and dust from entering the light source section and the inside of the apparatus.
  • the light guide path is formed by the first surface and the second surface of the light guide, the light can be guided to the exit surface while being totally reflected by the first surface and the second surface. Can be guided and ejected with high efficiency.
  • tilting the waterproof cover toward the product side which is larger than the Brewster angle of the cover material, it is possible to control the light distribution toward the product side with high efficiency, and to display the product displayed on the shelf board. It is possible to efficiently illuminate and reduce the light traveling toward the viewer. Therefore, it is possible to obtain an illuminating device having a light distribution characteristic capable of efficiently illuminating a product displayed on a shelf board and a waterproof / dustproof function.
  • the angle ⁇ 2 formed by the light guide direction guided through the light guide path and the perpendicular of the first emission surface is greater than the Brewster angle, It is characterized by tilting to the product side.
  • the waterproof cover but also the light guide light exit surface is inclined more efficiently than the Brewster angle by tilting the cap member to the product side, so that products displayed on the shelf board can be made more efficient. And the glare when the observer observes the product can be further reduced.
  • a first reflective surface is provided outside the first surface with an air layer interposed therebetween, and a second reflective surface is provided outside the second surface with an air layer interposed therebetween. It is a feature. According to this configuration, light emitted outside the total reflection condition in the light guide path can be returned to the light guide path and efficiently guided to the exit surface.
  • the ⁇ 1 and ⁇ 2 are smaller than 80 °. According to this configuration, if ⁇ 1 and ⁇ 2 are larger than 80 °, it is necessary to increase the vertical width of the exit surface with respect to the vertical width of the accompanying path. Therefore, ⁇ 1 and ⁇ 2 are made smaller than 80 °. Thus, the size of the lighting device can be made compact.
  • the present invention is characterized in that, in the illumination device configured as described above, the angle ⁇ 2 is larger than the angle ⁇ 1, and a housing for holding the waterproof cover is disposed in the formed space. According to this configuration, the waterproof cover can be attached to the housing and sealed so that water and dust do not enter inside, and the waterproof property can be improved.
  • the present invention is characterized in that in the plate illumination device having the above-described configuration, a diffusion portion having a predetermined diffusion characteristic is provided in a region of the first surface close to the first emission surface. According to this configuration, since the light flux immediately before emission is diffused within a predetermined range and reflected toward the emission surface, uniform illumination light can be generated. That is, the light can be guided with high efficiency while maintaining the light distribution characteristic, and uniform illumination light can be emitted.
  • this invention is an illuminating device of the said structure, WHEREIN:
  • the said light guide is equipped with the optical path branch part which branches the light from the said light source into two different directions, and uses the said light as said 1st emission surface as the said light guide path
  • the upper side of the shelf board can be illuminated via the first light guide path, and the lower side of the shelf board can be illuminated via the second light guide path. That is, it is possible to realize an illumination device that can simultaneously illuminate the top and bottom of the shelf board.
  • the waterproof cover provided on the upper side can prevent water and dust from entering.
  • the light guide is divided into a plurality of width directions when viewed from the front of the shelf, and the waterproof cover is integrally formed in the width direction. It is a feature. According to this configuration, the light guide can be manufactured as an assembly having a predetermined width, so that the manufacturing cost can be reduced. Moreover, since the waterproof cover is integrated in the longitudinal direction (the width direction when observed from the front of the shelf board), it is possible to sufficiently prevent water and dust from entering from the gap between the light guides.
  • the present invention is characterized in that, in the illumination device having the above-described configuration, the light source includes a plurality of LED light sources disposed along a width direction when observed from the front of the shelf board. According to this configuration, it is possible to realize a highly efficient lighting device with high illuminance, low power consumption, and low heat generation.
  • the present invention is characterized in that it is a shelf unit provided with the lighting device at the tip. According to this configuration, it is possible to obtain a shelf unit that is not dazzling, can illuminate the product with high efficiency, does not enter water and dust, and can be illuminated stably.
  • the present invention is characterized in that it is a showcase provided with a plurality of the shelf unit. According to this configuration, it is possible to obtain a showcase that can illuminate products displayed on a plurality of shelves with high efficiency and that can stably illuminate without entering water or dust.
  • the waterproof cover having translucency and waterproofness is provided on the first exit surface that emits illumination light toward the product side, water and dust do not enter from the exit surface.
  • the waterproof cover toward the product side which is larger than the Brewster angle of the cover material, it is possible to control the light distribution toward the product side with high efficiency, and to display the product displayed on the shelf board. Illumination can be performed efficiently, and light traveling toward the viewer can be reduced. Therefore, it is possible to obtain an illuminating device having a light distribution characteristic capable of efficiently illuminating a product displayed on a shelf board and a waterproof / dustproof function. Further, by using this lighting device, it is possible to obtain a shelf unit and a showcase that are not dazzling for the viewer, can illuminate the product with high efficiency, do not enter water and dust, and can be illuminated stably.
  • the illuminating device 1 is used to illuminate a product that is mounted on the end of a shelf board 5 and displayed on the shelf board 5 as shown in FIG. Further, in the case of a showcase provided with the price rail 4, it is mounted between the tip 5 a of the shelf board 5 and the price rail 4.
  • a lighting device 1A shown in FIG. 2 includes a light source 2 disposed along a longitudinal direction of a shelf (corresponding to a width direction when viewed from the front, and hereinafter referred to as a width direction of the shelf), and the light source
  • An incident surface 31 on which light emitted from 2 is incident, a light guide path 10A for guiding the light incident from the incident surface in a direction orthogonal to the width direction, and the guided light are displayed on a shelf board
  • a light guide 3A including a first exit surface 32 that emits toward the product side.
  • the light guide 3A has a first surface 34a and a second surface 34b that face each other and form the light guide path 10A.
  • emission surface 32 inclines toward the goods displayed on the shelf board, and is arrange
  • an angle ⁇ 1 formed by the light guide direction guided through the light guide path 10 ⁇ / b> A and the perpendicular of the outer surface of the waterproof cover 7 is inclined by tilting the outer surface of the waterproof cover 7 toward the product side. The angle is larger than the Brewster angle.
  • the light source 2 used here may be a light source that emits illumination light in the width direction of the shelf.
  • a linear light source cold cathode tube
  • the point light source LED
  • the incident surface 31 of the light guide 3A is directed downward
  • the first exit surface 32 is disposed upward
  • the light source 2 is disposed so as to face the incident surface 31, and the light from the light source 2 is The light is guided upward along the light guide path 10 ⁇ / b> A arranged in a substantially vertical direction, and is emitted from the outer surface 7 a of the waterproof cover 7 toward the product side.
  • the light source 2 is an LED light source
  • a substrate 21 is disposed in the width direction of the shelf board, and a plurality of chip-type LED light sources are mounted on the substrate 21.
  • a white LED light source that emits white light is used by combining a blue LED chip and a phosphor that is excited by light from the LED chip and emits excitation light having a predetermined wavelength.
  • the substrate 21 has a length about the width of the shelf board, and a plurality of LED light sources are mounted on the board 21 at a predetermined pitch.
  • the shelf width may be configured to be divided into a plurality of substrates and electrically connected to each other.
  • first reflecting surface 11 and the second reflecting surface 12 are installed outside the opposing first surface 34a and second surface 34b forming the light guide path 10A, respectively, with an air layer interposed therebetween.
  • a waterproof cover 7 is attached to the upper part of the first reflecting surface 11 and the second reflecting surface 12.
  • the light guide 3A is made of a transparent material that transmits visible light (for example, PMMA: acryl having a refractive index of about 1.5).
  • the light beam emitted from the light source 2 is guided toward the first exit surface 32 while being totally reflected between the first surface 34a and the second surface 34b.
  • the light beam deviating from the total reflection angle is reflected by the first reflecting surface 11 and the second reflecting surface 12 and returned again into the light guide 3 ⁇ / b> A, and all the light beams are emitted from the first exit surface 32. is doing.
  • the first reflection surface 11 and the second reflection surface 12 are formed by forming the inner surface of the frame that accommodates the light guide 3A as a reflection surface obtained by, for example, performing a white reflection process or a mirror process of white coating on an aluminum sheet metal. Further, a resin material may be used instead of the aluminum sheet metal, and a mirror treatment or a mirror film may be attached to the inner surface.
  • the waterproof cover 7 is disposed so as to cover the upper part of the frame including the first reflecting surface 11 and the second reflecting surface 12, and is configured to prevent water from entering from above. Therefore, when an LED light source is installed and used on the substrate 21 provided on the bottom surface portion, by preventing water from entering the substrate 21 portion and the LED light source portion, short circuit or LED deterioration is prevented. Can do.
  • the waterproof cover 7 provided in the lighting device 1A of the first embodiment is inclined to the upper end portions of the first reflecting surface 11 and the second reflecting surface 12 that are installed to face each other, as shown in the figure. It is composed of a flat plate-shaped translucent member (for example, a polycarbonate having a high visible light transmittance and high chemical resistance, and a hard coat for scratch prevention). That is, the incident surface (inner surface) and the exit surface (outer surface 7a) of the waterproof cover 7 are substantially parallel and are inclined toward the products displayed on the shelf board. For example, the angle ⁇ 1 formed by the direction guided through the light guide path 10A and the perpendicular of the outer surface 7a is inclined by about 65 °.
  • a diffusion portion 14 having a predetermined diffusion characteristic is provided in a region close to the first exit surface 32 of the first surface 34a on the viewer side.
  • the predetermined diffusion characteristic preferably has a diffusion angle ⁇ of about 5 ° to 20 ° (for example, a Gaussian scattering characteristic of ⁇ 10 °). If the diffusion angle is too large, the illumination light diverges at a wide angle, illuminating a useless area and lowering the illumination efficiency.
  • the diffusing unit 14 having a predetermined diffusion characteristic is provided in a region close to the exit surface, so that uniform illumination is achieved. Can generate light. That is, the light can be guided with high efficiency while maintaining the light distribution characteristic, and uniform illumination light can be emitted.
  • first surface 34a and the second surface 34b, or the first reflection surface 11 and the second reflection surface 12 are used as diffusion reflection surfaces so that the diffusion angle of the diffusion portion 14 provided in a predetermined region can be reduced. Good.
  • emitted from the light source 2 will inject into a light guide from the light guide entrance surface 31, and the light ray which satisfy
  • the light is guided to the first exit surface 32. Further, light rays that do not satisfy the total reflection condition are guided to the first exit surface 32 while being diffusely reflected between the first and second reflection surfaces that are diffuse reflection surfaces.
  • the first reflection surface 11 and the second reflection surface 12 are mirror surfaces, since almost all of the light rays reaching the diffusion region of the light guide are stored from the light source 2, the illumination is uniformized. In order to reduce color unevenness, it is necessary to increase the diffusion degree of the diffusion unit 14.
  • the illumination light is efficiently emitted to the product side by the reflection surface (first reflection surface 11) on the observer side, and at the same time, illumination light that does not satisfy the total reflection condition is emitted to the observer side, and the observer becomes dazzling. Can be prevented.
  • total reflection has a reflectance of approximately 100%, light can be efficiently guided from the incident surface to the exit surface.
  • the reflectivity of the reflecting surface is lower than that of total reflection, so the attenuation of light guide light energy is lower than that of total reflection. Big.
  • the light guide 3A is disposed in the light guide path 10A, and light rays satisfying the total reflection condition of the light guide 3A are totally reflected and guided to efficiently guide the light from the light source 2 to the emitting portion. be able to.
  • the light reaching the first exit surface 32 is refracted and emitted, enters the waterproof cover 7 disposed substantially parallel to the first exit surface 32 through the air layer, exits from the outer surface 7a of the waterproof cover, and is illuminated.
  • the product displayed on the shelf board is illuminated as light.
  • the light distribution center of the illumination light is tilted slightly toward the shelf board from directly above.
  • the illumination light is emitted to the observer side from directly above, the observer cannot observe the product well because the illumination light is dazzling.
  • the light distribution center is greatly inclined to the shelf side, only the lower part of the product is brightly illuminated, and it is difficult to illuminate the entire face surface uniformly and satisfactorily.
  • the angle ⁇ 1 formed by the vertical direction and the perpendicular of the exit surface (outer surface 7a) of the waterproof cover 7 is about 65 °
  • the angle ⁇ 2 formed by the vertical direction and the perpendicular of the first exit surface 32 is also about 65. °.
  • the radiance characteristics of the lighting device 1A including the waterproof cover 7 having such a configuration will be described with reference to FIG.
  • the horizontal axis shown in the figure represents the radiation angle ⁇ A where the direction directly above the light guide is 0 ° and the clockwise angle toward the shelf is the positive direction.
  • the vertical axis represents luminance (relative value). Therefore, 0 ° is directly above, 90 ° is parallel to the shelf, and a negative angle means light emitted toward the viewer.
  • the lighting device 1A of the present embodiment has a luminance peak R1 at a position inclined by about 30 ° from the vertical direction, and a product displayed on the shelf board in the range of 0 ° ⁇ A ⁇ 90 °, that is, on the shelf board. It turns out that it has the light distribution characteristic which can be illuminated favorably.
  • the angular characteristic of radiance is inversely proportional to the square of sin ⁇ . This is because the distance between the lighting device and the face surface is substantially proportional to sin ⁇ .
  • the luminance peak R1 is in the vicinity of 30 °, and the luminance gradually decreases toward 90 °. Therefore, the illuminance of the face surface on the shelf is uniform within the range of 60 ° above the shelf. You can see that In other words, it can be seen that a lighting device capable of illuminating a wide range above can be realized with a small lighting device that does not interfere with product observation even if it is arranged at the front end of the shelf.
  • ⁇ A ⁇ 0 ° that is, there is almost no light emitted to the observer side, so that the observer can observe the product comfortably without being dazzled.
  • the diffusing portion 14 is provided in a region of the first surface facing the first emission surface 32, the light LA from the light source 2 is diffused by the reflection surface just before the emission, and the first emission surface. 32 and the waterproof cover 7 are emitted as light beams LA1 and LA2 within a predetermined angle range. Further, a part of the light beam LA3 is totally reflected by the first exit surface 32 and is guided again into the light guide. That is, the light from the light source 2 is guided with high efficiency by total reflection until reaching the diffusing section 14, and the illumination light is made uniform just before emission to make the illumination light uniform and reduce color unevenness by color dispersion. Can be planned.
  • the white LED light source when a white LED light source is used as the light source, the white LED light source is generally a type that emits white light by combining a blue LED chip and a phosphor that emits excitation light of a predetermined wavelength when excited by light from the LED chip. Since it is a type that synthesizes white light using three primary color LED chips of blue LED chip, green LED chip and red LED chip, it will have discrete emission peaks at a plurality of wavelengths and a large refraction angle When used in an arrangement, color unevenness due to color dispersion is noticeably observed as intensity unevenness.
  • the incident angle on the exit surface is made random within a certain angle range by the diffusing section before the exit, it can be averaged and reduced to a level where no color unevenness is observed.
  • the waterproof cover 7 is provided on the first emission surface that emits illumination light toward the product side. Intrusion of dust can be prevented.
  • the waterproof cover 7 by tilting the waterproof cover 7 toward the product side, which is larger than the Brewster angle of the cover material, the light distribution can be controlled toward the product side with high efficiency, and the product displayed on the shelf board. Can be efficiently illuminated, and light traveling toward the viewer can be reduced. Therefore, it is possible to obtain a shelf illuminating device having a light distribution characteristic capable of efficiently illuminating a product displayed on the shelf and a waterproof / dustproof function.
  • the illumination device 1B includes a light guide 3B having a rectangular cross section and a substantially horizontal exit surface 32B. About another structure, it is the same as that of 1 A of illuminating devices demonstrated previously, and a different part is mainly demonstrated.
  • the light emitted from the light source 2, incident on the light guide 3 ⁇ / b> B, and guided through the light guide to the exit surface 32 ⁇ / b> B is formed as a light beam having a light distribution center in a substantially vertical direction, between the light guide 3 ⁇ / b> B and the waterproof cover 7. It is injected into a wedge-shaped air layer in between.
  • the angle ⁇ 1 formed by the perpendicular of the exit surface of the waterproof cover 7 and the vertical direction is set to about 70 °. Even at 70 °, the angle is larger than the Brewster angle (about 60 °) of the waterproof cover 7 material, and the light distribution center of the light beam emitted from the waterproof cover 7 is inclined toward the shelf.
  • a part of the light beam emitted from the emission surface 32B of the light guide 3B is emitted to the viewer side and reaches the first reflection surface 11 through the air layer, but is diffusely reflected by the first reflection surface 11.
  • the structure is directed toward the waterproof cover 7. Therefore, since this light beam is emitted toward the shelf board side, the shelf board side can be illuminated more efficiently. Since the light beam emitted from the emission surface 32B is emitted from the waterproof cover 7 toward the product on the shelf board, this emission surface 32B also corresponds to the first emission surface of the present invention. Therefore, it demonstrates as the 1st injection surface 32B hereafter.
  • the diffusion unit 14 having a predetermined scattering characteristic (for example, a Gaussian scattering characteristic of ⁇ 15 °) is provided on the first surface close to the first emission surface 32B and the first emission surface 32B itself.
  • a predetermined scattering characteristic for example, a Gaussian scattering characteristic of ⁇ 15 °
  • the light is diffused by the first light emission surface 32B of the light guide 3B, and the light from the light source 2 is emitted in a predetermined angle range. Further, the light from the light source 2 is guided with high efficiency by total reflection until reaching the diffusing section 14, and is diffused in a predetermined angle range just before emission to make the illumination light uniform, and the illumination light is made uniform and colored. Color unevenness due to dispersion can be reduced.
  • the horizontal axis shown in the figure represents a radiation angle ⁇ A where the upward direction of light guide as described above is 0 ° and the clockwise angle toward the shelf is a positive direction.
  • the lighting device 1B of the present embodiment in which the exit surface of the light guide is substantially horizontal, the light emitted at a large angle (50 ° to 100 °) on the shelf side is reduced, and as a result, the waterproof cover 7
  • the maximum emission angle (luminance peak R2) of the illumination light emitted from the light source is 90 ° or less, and has luminance characteristics that are more inversely proportional to the square of sin ⁇ than in the illumination device 1A in the range of ⁇ > 30 °.
  • the illuminance does not increase rapidly in the vicinity of the shelf surface, and the face surface of the product displayed on the shelf plate can be illuminated more uniformly.
  • the waterproof cover 7 is provided on the exit surface side, entry of water and dust into the light source section and the light guide path can be prevented.
  • the waterproof cover 7 by tilting the waterproof cover 7 toward the product side, which is larger than the Brewster angle of the cover material, the light distribution can be controlled toward the product side with high efficiency, and the product displayed on the shelf board. Can be efficiently illuminated, and light traveling toward the viewer can be reduced. Therefore, it is possible to obtain a shelf illuminating device having a light distribution characteristic capable of efficiently illuminating a product displayed on the shelf and a waterproof / dustproof function.
  • This illuminating device 1C is provided with an optical path branching unit that branches light from the light source 2 in two different directions instead of the light guide 3A provided in the above-described illuminating device 1A, and an upward facing disposing a waterproof cover as the light guiding route
  • a light guide 3C having a first light guide path that guides light and a second light guide path that guides light in a downward direction opposite to the first light guide path is used.
  • the light guide 3C has an integral shape with a T-shaped cross section. That is, the incident light guide path has a first light guide path 10Ca and a second light guide path 10Cb branched in two different directions, for example, up and down, and further guides light from the light source 2 to the first and second light guide paths. 10 Cc.
  • the waterproof cover 7 provided on the upper side can prevent water and dust from entering the light guide path.
  • the light source 2 for example, the LED light source, is fixed to the substrate 21 and has a plurality of LEDs arranged in a line in the width direction of the shelf board. Moreover, the upper and lower sides of the shelf board can be illuminated simultaneously via the optical path branching section that branches the light from the light source 2 in two different directions.
  • the incident portion 31C corresponding to the shaft portion having a T-shaped cross section is held by using the frame 13C, and the substrate 21 on which the light source 2 is mounted is fixed to the frame 13C.
  • the light guide 3C, the frame 13C, and the substrate 21 are long members whose longitudinal direction is the direction penetrating the drawing. For example, a plurality of light sources 2 including LED light sources are arranged in parallel in the longitudinal direction.
  • the frame 13C includes an upper reflecting plate 13Ca and a lower reflecting plate 13Cb that hold the incident portion 31C of the light guide 3C.
  • the incident portion 31C includes a V-groove incident surface on the surface facing the light source 2, and the first incident surface 31Ca and the second incident surface 31Cb that split the light flux in two different directions are formed in a V-groove shape.
  • Crossed That is, a light beam branching portion is formed by providing a refractive surface having a substantially V-shaped cross section at a position facing the light source 2 on the incident surface.
  • first reflecting plate 11C is attached to the surface (first surface 34Ca) side facing the incident portion 31C
  • second reflecting plate 12C is attached to the back surface portion at a position facing the first reflecting plate 11C.
  • the body portion constituting the first light guide path 10Ca of the light guide 3C is sandwiched between the first reflector 11C and the second reflector 12C.
  • the light guide 3C is made of a transparent body having a refractive index of 1 or more. In this embodiment, it is made of PMMA having a refractive index of about 1.5. However, a light guide made of a material other than this may be used, and a transparent resin such as a glass material or acrylic or polycarbonate other than PMMA may be used depending on the application. It may be used.
  • the space between the light guide 3C and all members (reflecting plates) is an air layer, and the light guided through the light guide satisfies the total reflection condition according to the refractive index of the light guide 3C. If the light is totally reflected on the light guide surface and does not satisfy the total reflection condition, the light is once exited from the light guide 3C, reflected on the reflecting plate surface, returned to the light guide again, and guided toward the exit surface.
  • the You may affix a mirror sheet on the surface of a reflecting plate. By increasing the reflectance of the reflecting plate surface, light can be guided more efficiently.
  • the intersection angle between the first incident surface 31Ca and the second incident surface 31Cb forming the light beam branching portion of the V-shaped cross section is, for example, 120 degrees. This intersection angle is set in the range of 90 to 150 degrees depending on the light emitting surface size and light emitting angle of the light source 2, the thickness of the light guide 3C, the direction in which the illumination light is emitted, and the like.
  • the light emitted from the light source 2 via the light beam branching portion is refracted from the straight traveling direction on the entrance surface having a V-groove shape, and is directed in two different directions (for example, upward and downward) with respect to the straight traveling direction. And the light is guided through the light guide toward the exit surface.
  • the upper emission surface is the first emission surface 32C. Further, the downward illumination light is emitted from the second emission surface 33C toward the lower product.
  • the main rays of illumination light are indicated by broken lines.
  • the light beam L1 is emitted from the light source 2, refracted by the first incident surface 31Ca, reaches the first surface without hitting the upper reflecting plate 13Ca, is reflected by the first reflecting plate 11C outside the first surface, The light is repeatedly reflected between the two reflecting plates 12C, guided to the first exit surface 32C, refracted and emitted toward the rear upper side of the illumination unit.
  • the light beam L2 is emitted from the light source 2, refracted at the second incident surface 31Cb, reaches the first surface without hitting the lower reflecting plate 13Cb, is reflected by the first reflecting plate 11C outside the first surface, The light is guided to the second exit surface 33C, which is a side exit surface, and is refracted and emitted toward the rear lower side of the illumination unit.
  • the light beam L3 is emitted from the light source 2, refracted by the second incident surface 31Cb, totally reflected by the lower reflecting plate 13Cb, and reaches the first surface. Thereafter, the light is guided to the first exit surface 32C by the behavior substantially the same as that of the light beam L1, and is refracted and emitted.
  • the light beam L4 is emitted from the light source 2, is refracted by the first incident surface 31Ca, is totally reflected by the upper reflecting plate 13Ca, and reaches the first surface. After that, the light is once reflected by the second exit surface 33Ca, reflected again by the first surface, then guided to the second exit surface 33C, refracted, and emitted toward the rear lower side of the illumination unit.
  • the light distribution characteristics of the light beam that behaves similarly to the light beam L1 and the light beam that behaves similar to the light beam L3 are obtained.
  • the light emitted from the light source 2 can be used efficiently as illumination light without waste, and a high-efficiency bright illumination device can be realized. Can do. The same applies to the behavior of the light rays L2 and L4.
  • the angle ⁇ 1 formed between the vertical direction and the perpendicular of the exit surface (outer surface 7Ca) of the waterproof cover 7C is about 65 °, and the vertical direction and the perpendicular of the first exit surface 32C of the light guide are formed.
  • the angle ⁇ 2 is about 75 °.
  • an angle ⁇ 2A formed by the vertical direction and the perpendicular line of the second light exit surface 33C of the light guide is also set to about 75 °.
  • any angle is larger than the Brewster angle of the waterproof cover and the light guide, and the shelf side can be illuminated with high efficiency and in a wide range.
  • the angle ⁇ 1 is about 65 ° and the angle ⁇ 2 is about 75 °, so that the distance between the waterproof cover 7C and the first emission surface 32C is formed wider as it goes downward. . Therefore, a housing (a part of the frame 13C) that holds the waterproof cover 7C can be arranged in the formed space.
  • the projecting engagement portion 13Cd is provided on the frame 13C, and the lower curved portion 7Ca provided on the waterproof cover 7C is fitted into the projecting engagement portion 13Cd.
  • the waterproof cover 7C can be attached to the frame 13C and sealed so that water and dust do not enter the inside of the apparatus and the substrate side, and the waterproofness and dustproofness can be improved.
  • the upper side of the waterproof cover 7C and the upper bent portion 7Cb cover the upper side of the light guide 3C, and are inserted and held between the front cover (first reflector 11C) and the light guide 3C.
  • water applied to the waterproof cover 7C from the upper side becomes a gap between the front cover and the light guide 3C.
  • it travels between the front cover and the light guide 3C and is discharged downward as indicated by an arrow E in the figure.
  • the inner surface of the front cover that is, the inner surface of the first reflecting plate 11C is a reflecting surface having a predetermined diffusion characteristic.
  • the inner surface of the metal cover can be made of white paint.
  • the diffuse reflection surface is preferably set to have a Gaussian scattering diffusion angle ⁇ of about 10 ° to 30 °, for example. If the diffusion angle is too large, the illumination light diverges at a wide angle, which not only illuminates a useless area and lowers the illumination efficiency, but also moves toward the observer observing the product and does not obstruct product observation May occur.
  • the surface of the light guide 3C (first surface 34Ca) is also preferably a diffusion surface.
  • This diffusion surface can be formed by forming fine irregularities on the surface of the light guide.
  • this diffusion characteristic should just be a diffusion characteristic comparable as the front cover inner surface mentioned above.
  • Irradiance unevenness occurs because the direction of emission from the exit surface varies greatly depending on the number of total reflections on the exit surface.
  • the upper end surface 35C of the light guide 3C is provided with a flat portion, and the upper side is covered with the front cover and the extended surface 11Ca of the first reflecting plate 11C.
  • this illumination device 1C is used as an illumination device for a shelf board, when illumination light is emitted upward from an illumination device arranged below the observer's line of sight, the viewer is dazzled, and the shelf This is because it obstructs the observation of objects on the board (displayed products).
  • the lower end surface 36C of the light guide 3C is provided with a flat portion, and emits illumination light to the lower side.
  • a shelf plate whose front end position is arranged in front according to the lower stage, the upper front surface of the object cannot be illuminated with high quality only by illumination light emitted only up and down and rearward. By emitting illumination light directly below only, the lower stage can be illuminated with higher quality.
  • the light guide 3 ⁇ / b> C has a long configuration having a substantially T-shaped cross section, and the length thereof is set to approximately the width of the shelf board.
  • a plurality of LED light sources are arranged at regular intervals in the longitudinal direction.
  • the board on which the LEDs are mounted also has a length that is about the entire width of the shelf board.
  • the shelf width is wide, it may be divided into a plurality of substrates and electrically connected to each other.
  • the interval between the LEDs is set to about the height of the front cover (the width of the first reflector 11C). In general, if the interval between the LEDs is wide, the number of LEDs can be reduced, and the cost can be reduced. However, since the illuminance unevenness is generated in the illumination light in the LED arrangement direction as the LED interval becomes wider, it is necessary to set it to be equal to or less than the optical path length of the illumination light.
  • the cross section is T-shaped, the optical path length from the light source to the exit surface can be secured longer than the vertical width of the illumination unit. Therefore, even if the size of the lighting unit is set to be thin in the vertical direction, the LED interval can be set wide, which is advantageous for cost reduction.
  • Both sides of the illumination unit are covered with a side cover 15 so that illumination light is not emitted outside from the left and right end surfaces of the light guide.
  • the inner surface of the side cover 15 is a reflecting surface, and the illumination light that has reached the side cover 15 is again returned to the inside of the light guide, reflected by any of the reflecting surfaces, and then emitted as illumination light from the exit surface.
  • the illumination optical system of the present embodiment using the light guide 3C is asymmetric in the vertical direction. Only the upper side has a back reflecting surface (second reflecting plate 12C), and a long optical path from the light source to the exit surface is secured. This is because the upper illumination light often has a short distance from the object to be illuminated, and therefore it is necessary to make the illumination light uniform in the illumination device.
  • the light emitted from the illumination optical system is efficiently guided to the illumination target by fixing the rear reflection surface (second reflection plate 12C) to the shelf plate so that the rear surface of the reflection plate is in contact with the end surface of the shelf plate. be able to.
  • the light guide 3C may be divided in the width direction as shown in the figure.
  • the light guide 3CA and the light guide 3CB are divided into two.
  • a multi-divided configuration of two or more divisions may be used, and by adopting a split configuration, it is possible to change by simply changing the number of light guides when dealing with a plurality of types of shelf boards.
  • molding it is easier to shape
  • the waterproof cover may be integrated. That is, the light guide is divided into a plurality in the longitudinal direction (width direction when observed from the front of the shelf), and the waterproof cover is integrally formed in the longitudinal direction (width direction when observed from the front of the shelf). ing. If it is this structure, since a light guide can be produced as an aggregate
  • This illumination device 1D is different in that the light guide 3D is used instead of the frame 13C included in the illumination device 1C described above, using the frame 13D, using the waterproof cover 7D instead of the waterproof cover 7C.
  • Other configurations are the same as those of the lighting device 1C, and thus will not be described in detail here.
  • the waterproof cover 7D has a shape that integrally covers the upper first emission surface 32D and the lower second emission surface 33D of the light guide 3D. That is, the waterproof cover 7D includes an upper cover portion 7Da that covers the first emission surface 32D, a lower cover portion 7Db that covers the second emission surface 33D, and a connecting plate portion 7Dc that integrally connects them.
  • the connecting plate portion 7Dc is inserted and sandwiched between the first surface of the light guide 3D and the front cover (first reflecting plate 11D). Therefore, the water that has entered between the light guide 3D and the front cover out of the water applied from the top of the waterproof cover 7D is drained downward through this gap.
  • the frame 13D is provided with a first engagement portion 13Dd and a second engagement portion 13De, and the waterproof cover 7D is engaged with the first engagement portion 13Dd to engage with the upper engagement portion 7Dd and the second engagement portion.
  • a lower engaging portion 7De that is engaged with and engaged with the joint portion 13De is provided, and when the front cover is screwed to the frame 13D, the front cover and the frame 13D are sandwiched and fixed.
  • the angle ⁇ 1 formed by the vertical direction and the perpendicular of the upper emission surface of the waterproof cover 7D is about 75 °
  • the vertical direction and the first emission surface 32D of the light guide plate The angle ⁇ 2 formed with the perpendicular is 74 ° to 75 °.
  • the angle ⁇ 1A formed by the vertical direction and the perpendicular of the lower exit surface of the waterproof cover 7D (the outer surface of the lower cover portion 7Db) is also about 75 °
  • the angle ⁇ 2A formed by is also set to 74 ° to 75 °.
  • any angle is larger than the Brewster angle (about 60 °) of the waterproof cover and the light guide, and the shelf side can be illuminated with high efficiency and in a wide range.
  • FIG. 1 a shelf unit and a showcase provided with the above-described lighting device 1 (1A to 1D) will be described with reference to FIGS. 1, 12, and 13.
  • FIG. 1 a shelf unit and a showcase provided with the above-described lighting device 1 (1A to 1D) will be described with reference to FIGS. 1, 12, and 13.
  • FIG. 1 a shelf unit and a showcase provided with the above-described lighting device 1 (1A to 1D) will be described with reference to FIGS. 1, 12, and 13.
  • FIG. 1 shows a shelf unit 50 including an illumination device 1 (1A to 1D: for example, 1A) that illuminates the upper part of the shelf 5.
  • the lighting device 1 (1A) is mounted between a front end 5a of the shelf board 5 and a price rail 4 attached to the shelf board.
  • the unit configuration in which the lighting device 1 (1A) is attached to and integrated with the shelf plate 5 can save the trouble of attaching the illumination device after the shelf plate 5 is installed on the showcase body. Since the lighting device 1 (1A) according to the present embodiment is small in thickness and vertical width and can be configured to be lightweight, the lighting device 1 (1A) is easy to handle as the shelf unit 50 integrated with the shelf in advance.
  • a plurality of LEDs are arranged on a single substrate 21 at approximately equal intervals, and electrical components for a drive circuit are also installed on the same substrate 21.
  • power supply wiring (not shown, lead wires, etc.) extends to the back side of the shelf board.
  • the power supply wiring is fixed to the back side of the shelf up to the shelf main body attachment portion, and is connected to the main body power supply wiring via the connector at the shelf attachment portion.
  • the lighting device 1 (1A) can be configured so that the vertical width of the lighting unit is small, the observer can observe the product well without being disturbed by the lighting unit. In this way, by using the illumination device that illuminates upward from the front end of the shelf board, it is possible to satisfactorily observe the product face surface, particularly the lower side.
  • the shelf board unit 50A provided with the illuminating device 1 (1C, 1D: 1C, for example, 1C) that illuminates up and down from the front end of the shelf board, the face surface and upper side of the product can be observed well . That is, the illuminating device 1 (1C) attached to the front end of the upper shelf 5A has the illumination light RA1 at the center of light distribution directed upward of the shelf 5A and the illumination at the center of light distribution directed downward of the shelf 5A.
  • the illuminating device 1 (1C) having the light RB1 and attached to the tip of the lower shelf 5B is directed toward the lower side of the shelf 5B and the illumination light RA2 at the center of the light distribution toward the upper side of the shelf 5B. Illumination light RB2 at the center of light distribution.
  • the illumination light RA1 illuminates the face surface of the product M1 displayed on the shelf board 5A
  • the illumination light RA2 and the illumination light RB1 simultaneously illuminate the face surface and upper part of the product M2 displayed on the shelf board 5B.
  • by tilting the light distribution center of the illumination light RB1 from the face surface to the back side of the shelf not only the front end of the shelf but also the back of the shelf can be well illuminated, so products near the top of the shelf were sold. Later, you can observe the products in the back.
  • the shelf units 50 and 50A are provided with the lighting device 1 (1A to 1D) at the tip, the products displayed on the shelf can be illuminated with high quality.
  • a showcase having a plurality of such shelf board units is preferable because a showcase capable of easily observing the products displayed on the shelf board can be obtained.
  • a showcase SC having a configuration in which a shelf board unit 50A in which the shelf board 5 and the lighting device 1 (1C, 1D) are integrated is provided in a plurality of stages.
  • the lighting device 1 (1C, 1D) has a compact configuration and can have a small vertical width, an observer (a purchaser of the product) can observe the front of the product well without being disturbed by the lighting device. Further, even a tall product can be satisfactorily observed up to the face of the product, particularly the lower side, by using an illumination device that illuminates upward from the front end of the shelf board. Furthermore, by using an illuminating device that illuminates up and down from the front end of the shelf plate, it is possible to satisfactorily observe the face surface and upper side of the product.
  • the upper illumination is required to illuminate a wide range.
  • the lower side illumination often illuminates the upper part of the object placed on the shelf below the shelf to which the illumination device is attached, and therefore often has a distance from the object to be illuminated. Therefore, by tilting the light distribution center of the lower illumination to the rear side, it becomes possible to illuminate the objects arranged to the back of the shelf board from the upper side. In other words, the object surface can be illuminated from the front and simultaneously from the top to the back, so that products placed on the shelf can be easily observed.
  • the illumination device 1 (1A to 1D) since a waterproof cover having translucency and waterproofness is provided on the first emission surface that emits illumination light toward the product side, dust enters. Absent.
  • the waterproof cover toward the product side which is larger than the Brewster angle of the cover material, it is possible to control the light distribution toward the product side with high efficiency, and to display the product displayed on the shelf board. Illumination can be performed efficiently, and light traveling toward the viewer can be reduced. Therefore, it is possible to obtain an illuminating device having a light distribution characteristic capable of efficiently illuminating a product displayed on a shelf board and a waterproof / dustproof function. Further, by using this lighting device, it is possible to obtain a shelf unit and a showcase that are not dazzling for the viewer, can illuminate the product with high efficiency, do not enter water and dust, and can be illuminated stably.
  • a diffusing portion 14 that diffuses a reflection surface, an incident surface, or an exit surface that forms a light guide path into a predetermined angle range, color unevenness or illuminance unevenness of a light source (LED light source) is reduced. It is possible to improve and realize a more uniform high-quality lighting device.
  • a shelf unit having a configuration in which the shelf and the lighting device are integrated is preferable because it is easy to handle. Moreover, if it is a showcase which provided this shelf board unit in multiple steps up and down, since the goods displayed on the shelf board can be illuminated uniformly from the upper and lower sides of a shelf board, it is preferable.
  • the illumination measure according to the present invention is to guide the light efficiently by arranging the light guide in the optical path, attach the waterproof cover, and incline the exit surface of the waterproof cover more than the Brewster angle.
  • the light device has a high light use efficiency and is a light device suitable for a showcase having both a light distribution characteristic capable of efficiently illuminating the product side and a waterproof / dustproof function.
  • the lighting device according to the present invention can be suitably applied to a lighting device used in a multistage showcase having a plurality of shelf boards on the top and bottom.
  • Lighting device 1-1D lighting device 2 Light source (LED light source) 3A to 3D Light guide 5 Shelf 7 to 7D Waterproof cover 11 First reflecting surface 12 Second reflecting surface 13 Frame 14 Diffusing portion 21 Substrate 31 Incident surface 32 to 32D First emitting surface 50, 50A Shelf unit SC Showcase

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Planar Illumination Modules (AREA)
  • Freezers Or Refrigerated Showcases (AREA)

Abstract

L'invention concerne : un dispositif d'éclairage employé dans une vitrine dotée d'une étagère et présentant une étanchéité à la poussière et à l'eau, et des caractéristiques de répartition lumineuse permettant d'éclairer efficacement des produits exposés sur l'étagère ; une unité d'étagère qui est munie du dispositif d'éclairage, a la capacité d'éclairer très efficacement des produits et peut réaliser un éclairage constant sans pénétration de poussière ou d'eau ; et une vitrine. Le dispositif d'éclairage (1) (1A-1D) est configuré de telle sorte que de la lumière provenant d'une source de lumière (2) est guidée jusqu'à une section de sortie tout en étant réfléchie et est émise dans une direction prédéterminée à partir de la section de sortie. La section de sortie est dotée d'un couvercle étanche à l'eau (7). L'angle (θ1) formé par la direction de guidage de la lumière dans laquelle la lumière est guidée par le biais d'une trajectoire de guidage de lumière et une ligne perpendiculaire à la surface extérieure du couvercle étanche à l'eau est plus grand qu'un angle de Brewster. La surface extérieure du couvercle étanche à l'eau est inclinée en direction des produits. L'unité d'étagère (50, 50A) fixe et intègre le dispositif d'éclairage (1) (1A-1D) à une étagère (5). La vitrine (SC) comprend une pluralité d'unités d'étagère agencées sur plusieurs niveaux.
PCT/JP2012/062917 2011-06-01 2012-05-21 Dispositif d'éclairage, unité d'étagère munie du dispositif d'éclairage et vitrine Ceased WO2012165190A1 (fr)

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JP2011123385 2011-06-01

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3032872A1 (fr) * 2015-02-24 2016-08-26 S2F Flexico Dispositif de presentation et de distribution d'articles comprenant une butee eclairee
WO2018075662A3 (fr) * 2016-10-18 2018-05-31 Retail Space Solutions Llc Présentoir éclairé, kit de modernisation et procédés associés
JP2018130146A (ja) * 2017-02-13 2018-08-23 株式会社オカムラ 商品陳列棚
US10130196B2 (en) 2014-08-07 2018-11-20 Artform International Limited Product display shelf, system and method
US10405674B2 (en) 2016-03-23 2019-09-10 Retail Space Solutions Llc Low product indicator for self facing merchandiser and related methods
US10702076B2 (en) 2016-01-18 2020-07-07 Atlas Bolt & Screw Company Llc Sensors, devices, adapters and mating structures for merchandisers and related methods
EP4119841A1 (fr) * 2021-07-13 2023-01-18 Kohler Co. Miroir et appareil d'armoire

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000305119A (ja) * 1999-04-20 2000-11-02 Ushio Sogo Gijutsu Kenkyusho:Kk 波長変換用光学素子
JP2004073763A (ja) * 2002-08-12 2004-03-11 Sendak Corp ショーケース用棚段照明装置
JP2010082115A (ja) * 2008-09-30 2010-04-15 Sanyo Electric Co Ltd ショーケース

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000305119A (ja) * 1999-04-20 2000-11-02 Ushio Sogo Gijutsu Kenkyusho:Kk 波長変換用光学素子
JP2004073763A (ja) * 2002-08-12 2004-03-11 Sendak Corp ショーケース用棚段照明装置
JP2010082115A (ja) * 2008-09-30 2010-04-15 Sanyo Electric Co Ltd ショーケース

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10130196B2 (en) 2014-08-07 2018-11-20 Artform International Limited Product display shelf, system and method
US10470594B2 (en) 2014-08-07 2019-11-12 Artform International Limited Product display shelf, system and method
FR3032872A1 (fr) * 2015-02-24 2016-08-26 S2F Flexico Dispositif de presentation et de distribution d'articles comprenant une butee eclairee
US10702076B2 (en) 2016-01-18 2020-07-07 Atlas Bolt & Screw Company Llc Sensors, devices, adapters and mating structures for merchandisers and related methods
US10405674B2 (en) 2016-03-23 2019-09-10 Retail Space Solutions Llc Low product indicator for self facing merchandiser and related methods
US10588427B2 (en) 2016-03-23 2020-03-17 Retail Space Solutions Llc Low product indicator for self facing merchandiser and related methods
US11291312B2 (en) 2016-03-23 2022-04-05 Retail Space Solutions Llc Low product indicator for self facing merchandiser and related methods
WO2018075662A3 (fr) * 2016-10-18 2018-05-31 Retail Space Solutions Llc Présentoir éclairé, kit de modernisation et procédés associés
US10952548B2 (en) 2016-10-18 2021-03-23 Retail Space Solutions Llc Illuminated merchandiser, retrofit kit and related methods
JP2018130146A (ja) * 2017-02-13 2018-08-23 株式会社オカムラ 商品陳列棚
EP4119841A1 (fr) * 2021-07-13 2023-01-18 Kohler Co. Miroir et appareil d'armoire
US12130004B2 (en) 2021-07-13 2024-10-29 Kohler Co. Mirror and cabinet apparatus

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