JPH1139919A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire with improved sealing between a body and a cover, which is assembled easily with less components. SOLUTION: Projections 15a, 15b are formed at opening ends on both sides of a long body 1 having a U-shaped sectional form as cover fixing parts, and reflector engaging channels 16a, 16b of the body 1 are formed on both sides between the opening ends and a bottom surface to fixedly engage ends 2a, 2b of a reflector 2 with the reflector engaging channels 16a, 16b. A cover 3 having a U-shaped sectional form, formed of a transparent plate which utilizes a flexible synthetic resin and the like, alters the shape by exerting pressure on ends 34a, 34b so as to be inserted into the body 1, and when the pressure is released, restoring force acts on the ends 34a, 34b to open outwardly, bringing its outer surface into elastic contact with the cover fixing projections 15a, 15b provided on both the opening ends of the body 1 thereby being removably fixed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a luminaire having improved sealing performance and easy attachment and detachment of a cover to and from a main body.

[0002]

2. Description of the Related Art A lighting device used in a clean atmosphere with a small amount of dust, such as a clean room, should have a structure in which the sealing property between a cover and a main body is enhanced so that dust attached to a lamp or the like is not released to the outside. Has been requested.

FIG. 4 is an exploded perspective view of such a lighting fixture. In the figure, 1 is a long body having a U-shaped cross section, 2 is a reflecting plate used to increase the lighting efficiency, 3
Is a cover having a U-shaped cross section, 4 is a lamp serving as a light source,
5 is packing. A U-shaped groove is formed in the upper part of both side surfaces 1a and 1b of the main body 1 as described later.
Packings 51 and 52 are mounted. The reflecting plate 2 is fixed to the reflecting plate mounting portion 12 formed on the bottom surface portion on both sides of the main body 1 by mounting screws 21.

[0004] The lamp 4 is inserted into and fixed to a lamp support portion 13 which is disposed at both side ends of the main body 1 so as to face each other in the axial direction, and is electrically connected to a power supply circuit (not shown). The cover 3 is made of a transparent plate 31 that transmits light of the lamp 4
And a frame 32 made of resin or sheet metal. The transparent plate 31 is fitted into the frame 32, and the frame 32 is fixed to the cover attaching portions 11 provided on both side ends of the main body 1 with screws 33. Is done. Cover attachment part 11, reflector attachment part 1
2. The lamp support 13 is integrally formed and connected to the main body 1 by means such as screws.

FIG. 5 is a perspective view of the entire lighting fixture after assembly. FIG. 6 is a cross-sectional view showing a part of the lighting apparatus shown in FIG. 5 with a part thereof omitted in the direction of an arrow AA orthogonal to the axial direction. The lighting apparatus has the main body 1 mounted on a ceiling, a wall, or the like such that the side on which the cover is provided is an irradiation surface. As shown in FIG. 6, packings 51 and 52 are mounted in U-shaped grooves 14 a and 14 b formed on both sides 1 a and 1 b of the main body 1, and both end portions 32 a of the cover 3 are mounted on the packings 51 and 52. , 32b are fitted.

The packings 51, 52 have a substantially U-shape having a predetermined thickness, are formed of an elastic synthetic resin or the like, and are mounted in U-shaped grooves 14a, 14b. The cover 3 is formed using such packings 51 and 52.
Is fixed to the main body 1, the sealing between the main body 1 and the cover 3 is enhanced, and when the lighting equipment is installed in an environment requiring a clean atmosphere such as a clean room, the lamp 4 or Dust adhered to the reflection plate 2 or the like during manufacturing or transportation is not released to the outside.

[0007]

As described above, in the luminaire in which it is necessary to enhance the sealing between the cover and the main body, in the conventional configuration, the U-shaped groove must be formed in the upper part of both sides of the main body. In addition, there is a problem that the cost of the main body increases because the size of the plate thickness t on both side surfaces of the main body increases as shown in FIG.

Further, since packing is required, the number of parts increases, and there is a problem that the number of assembling steps for mounting the packing in the U-shaped groove formed in the upper part of both sides of the main body increases.

Further, in order to attach the cover to the main body, a transparent plate is fitted into a frame using a sheet metal or the like, and the frame is fixed to the main body with screws. It requires two members with different frame members using sheet metal etc., and it takes time to work to combine them, attach the cover to the main body, and remove the cover from the main body when maintenance is required There was a problem.

As shown in FIG. 5, the total length L of the cover is the sum of the length l ₂ of the transparent plate and the lengths l ₁ and l ₁ of the mounting portions on both sides of the frame body. In addition to the length l ₂ of a certain transparent plate, the length l ₁ of the mounting portion on both sides of the frame body,
Since l ₁ is required, the length of the cover and the body increases,
There was a problem that the size of the entire lighting fixture became large. Since the reflection plate is fixed to the main body with screws, the work of attaching and removing the reflection plate is also required.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides a lighting fixture having a reduced number of parts, a simple configuration, a reduced number of assembling steps, and improved sealing between the cover and the main body. It is the purpose.

[0012]

The object of the present invention is to provide a lighting apparatus according to the first aspect, wherein the lighting apparatus has a U-shaped section.
A cover using a flexible transparent plate having a U-shape, a light source, a reflector, and a U-shaped cross-section are formed with cover fixing portions at both open ends and both sides between the open end and the bottom surface. A long-sided main body having a reflection plate engaging groove formed on a surface thereof, wherein both end portions of the reflection plate are engaged with and fixed to the reflection plate engagement grooves formed in the main body, and both end portions of the cover are formed. A structure in which a light source is disposed between the reflector and the cover by elastically contacting an outer surface of the device with a cover fixing portion formed on the main body to removably fix the cover to the main body to cover an opening end. Is achieved by:

Further, in the invention according to claim 2, the lighting fixture according to claim 1 has an engaging groove formed at both ends of the cover and formed at the opening end on both sides of the engaging groove and the main body. This is achieved by engaging the fixed cover fixing portion.

According to the above feature of the invention according to claim 1,
The cover using a flexible transparent plate has a cover fixing portion in which the outer surfaces of both ends are formed at the open ends on both sides of the main body. Since it is elastically contacted with and fixed detachably, it is possible to obtain a lighting device with a reduced number of parts and improved sealing between the main body and the cover. Further, the cost of the lighting fixture can be reduced, the size can be reduced, and the cover can be attached to the main body by a simple operation.

According to the above feature of the invention according to claim 2,
Since the engagement groove of the cover is engaged with the cover fixing portions formed at the open ends on both sides of the main body, the cover is firmly fixed to the main body, and the sealing property is well maintained.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view as seen in a direction orthogonal to the axial direction of the lighting fixture, similarly to the conventional example of FIG. 1A shows a state before assembling in which a main body 1, a reflector 2, and a cover 3 are separated, FIG. 1B shows a state in which the reflector 2 is attached to the main body 1, and FIG. 1 shows a state after assembling in which the reflection plate 2 and the cover 3 are combined.
Although not shown, a lamp serving as a light source is disposed between the reflection plate 2 and the cover 3.

The main body 1 is formed in an elongated shape with a U-shaped cross section, and a projection 15 is provided at both open ends as a cover fixing portion.
a, 15b are formed over substantially the entire length. Further, between the open end and the bottom surface, reflector engaging grooves 16a and 16b are formed on both side surfaces 1a and 1b over substantially the entire length. The reflecting plate 2 formed to have substantially the same length as the main body is connected to the X in FIG.
1B, the distal end portions 2a and 2b on both sides of the reflector 2 are inserted into the body so as to push and spread the projections 15a and 15b of the body 1, and as shown in FIG.
a and 16b to be fixed.

Next, the reflection plate engaging grooves 16a, 16
b, with the reflector 2 engaged and fixed within the cover 3b.
Is moved in the Y direction in FIG. The cover 3 has substantially the same length as the main body, is formed in a U-shaped cross section, and uses a transparent plate made of a flexible synthetic resin or the like.
When a pressing force is applied to a and 34b, it is deformed inward and inserted into the main body 1. When the pressing force is released, the deformed portions of both end portions 34a and 34b of the cover 3 open outward by a restoring force, and the outer surfaces are elastically attached to the projections 15a and 15b formed at the open ends on both sides of the main body 1. Is fixed in contact with

At this time, the front end portions 34a and 34b of both sides receive elastic force toward the outside by the front end portions 2a and 2b of the reflector 2, so that the cover 3 is firmly fixed to the main body 1. Further, since the projections 15a and 15b are formed on the opening ends on both sides of the main body 1 over substantially the entire length of the main body, the sealing performance between the main body 1 and the cover 3 is improved. If maintenance such as inspection or replacement of the lamp is required,
When the pressing force is applied to the 4a, 34b and deformed, the elastic contact with the projections 15a, 15b formed on the opening ends on both sides of the main body 1 is released, and the cover 3 can be detached from the main body 1 again. . That is, the cover 3 is detachably attached to the main body 1 with one touch.

As described above, according to the present invention, the protrusions 15a, 15
b, and the reflector engaging grooves 16a and 16b are formed on both sides between the open end and the bottom surface. However, since these formed portions can be easily processed by a metal mold, they are formed in a conventional manner. The manufacturing is simpler than the case where a U-shaped groove is machined in the upper part of both sides of the body. In addition, those having a small thickness on both sides of the main body can be used.

FIG. 2 is an exploded perspective view of the lighting fixture of the present invention. As described with reference to FIG. 1, in the present invention, the reflector 2 and the cover 3 can be attached to the main body 1 by one-touch without using screws, so that the assembling work is simplified. Further, a frame for attaching the cover 3 to the main body 1 becomes unnecessary, and the configuration of the cover is simplified.

Further, since the cover 3 is integrally formed of only the transparent portion, the length of the lighting fixture is set in accordance with the effective length of the portion to be irradiated with the light beam, and the size of the lighting fixture can be reduced. I can do it. With the above configuration, when the main body 1, the lamp support portions 13 on both sides, the reflector 2, the lamp 4 serving as a light source, and the cover 3 are sequentially attached, the hermeticity between the main body base 1 and the cover 3 is improved. Lighting fixtures are obtained.
Consideration is given to the processing and assembling accuracy of the components so that the outer peripheral surfaces of the lamp support portions 13 on both sides and the inner peripheral surfaces at both ends of the cover are closely attached without any gap.

Further, in the prior art, a part of the power supply circuit of the lamp such as a ballast is arranged at the cover attaching portions 11 provided at both ends of the main body 1 in FIG. 4, but in the present invention, the cover attaching portions are provided. These power supply circuits are collectively arranged on the bottom surface of the main body 1 because they have been removed. Such an arrangement is possible because the power supply circuit is also downsized due to downsizing of electronic components and the like.

FIGS. 3A, 3B, and 3C are cross-sectional views of another embodiment of the present invention. In this embodiment, the structure of the main body 1 is the same as that of the example of FIG. 1, but the cover 3 has concave grooves 35a and 35b formed at the front end portions on both sides over the entire length. For this reason, when a pressing force Z is applied to the distal end portion of the cover 3 from both sides as shown in FIG. 3B, the distal end portion of the cover 3 bends and deforms, thereby entering the inside of the main body 1 and then pressing the Z. Is released, the deformed portion is restored as shown in FIG. 3C, and the concave grooves 35a and 35b are
Are engaged with the projections 15a and 15b formed at the open ends on both sides of the cover and are detachably fixed.

The cover 3 is made of a flexible synthetic resin or the like, and has an elastic force acting in a direction to open outward, so that the concave grooves 35a and 35b are formed at both open ends of the main body 1. The cover 3 is securely engaged with the projections 15a and 15b.
And the main body 1 are tightly sealed. In this case,
The concave grooves 35a and 35b of the cover 3 can be easily formed by using a mold. Further, a lamp serving as a light source is disposed between the reflection plate 2 and the cover 3. The protrusions 15 formed on the opening ends on both sides of the main body 1
The shape of the groove provided on the cover 3 for engaging with the a and 15b is not limited to the concave shape as in the example of FIG. 3, but is engaged with the protrusions formed at the open ends on both sides of the main body. Any shape may be used as long as it matches.

Although FIGS. 1 and 3 illustrate an example in which protrusions for fixing the cover are formed at the opening ends on both sides of the main body, in the present invention, they are formed at the opening ends on both sides of the main body. The shape of the cover fixing part is not limited to the protrusion of the above example,
A configuration in which the cover is detachably fixed to the main body by forming an engagement groove at the opening end on both sides of the main body and engaging the projection formed at the front end of the cover with the engagement groove. It can also be. That is, as long as the cover fixing portions are formed at the opening ends on both sides of the main body, the present invention is applicable regardless of the shape.

[0027]

As described above, according to the lighting apparatus of the present invention, the cover fixing portions are formed at the opening ends on both sides of the main body having a U-shaped cross section, and the both sides between the opening end and the bottom surface are provided. Since the cover and the reflector are attached and fixed to the main body using the formed reflector engagement groove, the number of parts is reduced, the cost is reduced, and the assembly can be performed easily.

The cover is detachably fixed to the main body by elastically contacting the cover fixing portions formed at the open ends on both sides of the main body with the outer surfaces of the distal ends on both sides of the cover. A lighting fixture with improved sealing between the cover and the cover is obtained. Further, since the frame for attaching the cover is not required, the overall length of the lighting fixture is shortened, and the size of the lighting fixture can be reduced. Further, since the cover is detachably attached to the main body, maintenance such as lamp replacement can be easily performed.

Further, the cover is firmly fixed to the main body by engaging the engagement groove provided in the cover with the cover fixing portions formed at the opening ends on both sides of the main body, so that the sealing performance is well maintained. Is done.

[Brief description of the drawings]

1A, 1B, and 1C are cross-sectional views illustrating a configuration according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a configuration according to the embodiment of the present invention.

FIGS. 3A, 3B, and 3C are cross-sectional views illustrating a configuration according to another embodiment of the present invention.

FIG. 4 is an exploded perspective view showing a configuration of a conventional example.

FIG. 5 is a perspective view showing a configuration of a conventional example.

FIG. 6 is a perspective view partially omitted when viewed in the direction of arrows AA in FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Reflector 3 Cover 4 Lamp 5 Packing 15a, 15b Projection 16a, 16b Reflector engaging groove 35a, 35b Concave groove

Claims (2)

[Claims] 1. A cover using a flexible transparent plate having a U-shaped cross section, a light source, a reflector, a U-shaped cross section, and cover fixing portions formed at both open ends. A long body having reflector engagement grooves formed on both side surfaces between the open end and the bottom surface, wherein both end portions of the reflector are engaged with reflector engagement grooves formed in the body. And the outer surfaces of both end portions of the cover and the cover fixing portion formed on the main body are brought into elastic contact with each other, and the cover is detachably fixed to the main body to cover the open end. Lighting equipment with a light source placed between. 2. An engagement groove is formed at both ends of the cover.
The lighting device according to claim 1, wherein the engaging groove is engaged with cover fixing portions formed at both ends of the opening of the main body.