JPH067528Y2 - lighting equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a lighting device that performs two types of lighting, that is, lighting of a base and lighting of a spot.

[Background Art] Conventionally, in a straight tube fluorescent lamp, it is possible to condense light only in one direction, and even if it is condensed, it can be condensed as a specific surface light source or line light source. When a point light source was needed at the same place, a separate point light source such as an incandescent lamp was needed. For this reason, two or more types of light sources have been incorporated into the same fixture or different fixtures have been arranged in locations where two types of light sources, a surface light source and a point light source, are required. There was a lot of problems.

[Object of the Invention] The present invention is provided in view of the above-mentioned point, and provides a lighting device for obtaining a concentrated light source like an incandescent lamp spotlight from a straight tube type lamp. It is a thing.

DISCLOSURE OF THE INVENTION (Structure) The lighting fixture according to the present invention has a main body into which a straight tube type lamp is detachably inserted and which covers at least a part of the outer peripheral surface in the longitudinal direction of the lamp over the entire circumference. A first reflecting plate having a reflecting surface that curves along substantially the half circumference of the outer peripheral surface of the lamp, and a reflecting surface that curves along the remaining substantially half circumference of the outer peripheral surface of the lamp, with an opening in the center The main body is composed of the second reflecting plate and the cylindrical light projecting portion that is provided on the peripheral edge of the opening so as to project away from the lamp. The main body is formed between the lamp and the opening. A third reflecting plate, which has a reflecting surface having a concave curved surface on the opposite surface and reflects the light reflected by the second reflecting plate toward the opening, is provided in the main body.

By adopting the above configuration, the main illumination is performed by using the lamp as a linear light source when the main body is not attached to the lamp, and when the main body is attached to the lamp, a point light source such as a spotlight is passed through the light projecting unit. Lighting can be performed. That is, one type of light source can be used as two types of light sources by attaching and detaching the main body. Moreover, by arranging the three reflectors as described above, the light emitted around the lamp can be focused on the light projecting portion, and the light emitted from the lamp can be effectively used to enhance the light. It is possible to obtain a point light source of brightness.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a perspective view in which a main body 2 which is the gist of the present invention is attached to a normal straight tube type fluorescent lamp 1. The fixture body 4 is a normal lighting fixture, and sockets 6 are attached to both ends of the lower surface of a case 5 in which the lighting device is installed, and the normal straight tube fluorescent lamp 1 is mounted between the sockets 6. There is. The main body 2 that collects the light from the fluorescent lamp 1 like a spotlight is detachably mountable. This body 2 is the second
As shown in the figure, it is composed of an upper reflecting portion 7 and a light projecting portion 3 formed below the reflecting portion 7. The reflector 7 is composed of an upper reflector 8, a lower reflector 9 and a reflector 10 that collects the light reflected from the reflector 9 onto the light projecting unit 3, and reflects the inner surfaces of the reflectors 8 and 9 together. The lower surface of the plate 10 serves as a reflecting surface. The upper reflection plate 8 has a parabolic shape and reflects the light from the fluorescent lamp 1 to the reflection plate 9 side and at the same time makes the diffused light effectively come out to the front surface to serve as a surface light source. The reflection plate 9 collects the reflected light from the reflection plate 8, that is, the surface light source at one location, and for example, a reflection plate of a ready-made lighting fixture is used. The engaging piece 9a formed on the upper edge of the reflection plate 9 is an engaging recess 8a formed on the lower edge of the reflection plate 8.
Both reflectors 8 and 9 are engaged by engaging with. The side plates 8b and 9b of the two reflectors 8 and 9 are respectively formed with through holes 11 for inserting the fluorescent lamp 1 into the inside of the reflecting portion 7. By inserting the fluorescent lamp 1 into the insertion hole 11 of the main body 2, the main body 2 is easily mounted and held on the fluorescent lamp 1. The reflecting plate 10 located below the fluorescent lamp 1 when the fluorescent lamp 1 is inserted has a concave curved surface on the lower surface so that the light from the reflecting plate 9 is condensed and projected onto the light projecting unit 3. There is. The main body 2 mounted on the fluorescent lamp 1 is rotatable about the fluorescent lamp 1 as an axis and is movable in the axial direction of the fluorescent lamp 1. The main body 2 may be attached to the fluorescent lamp 1 by sandwiching between the two reflectors 8 and 9.

The light projecting section 3 of the main body 2 is configured as follows. That is, the inner cylinder 13 formed integrally or separately from the peripheral edge of the opening 12 opening at the bottom of the reflection plate 9, and the outer cylinder 14 located on the outer periphery of the inner cylinder 13 and slidable in its axial direction. The lens 15 arranged in the opening 12 and the lens 17 arranged in the opening 16 of the outer cylinder 14 are configured. The light condensed by the reflecting plate 10 is reflected by the lens 15, and the light is condensed by both lenses 15 and 16 and is projected downward as a spotlight. The outer cylinder 14 can be slid to adjust the focusing range.

Then, when the main body 2 is mounted on the fluorescent lamp 1 as described above, the portion of the fluorescent lamp 1 covered by the main body 2 from the reflecting plate 8,
Reflect the light to 9. That is, the light emitted upward from the fluorescent lamp 1 is reflected downward by the upper reflector 8 as a surface light source,
The reflected light is reflected by the reflecting plate 9 together with the light from the lower side of the fluorescent lamp 1 and focused on the reflecting plate 10. The reflecting plate 10 collects the light, projects the light onto the lenses 15 and 16, and the light is emitted from the light projecting unit 3 as a spotlight.
Further, as shown in FIG. 1, since light is projected from the portion of the fluorescent lamp 1 other than the portion where the main body 2 is mounted, this serves as illumination as a base. Further, if the illumination as the base is unnecessary, the portions other than the main body 2 are masked. A colored filter may be attached to the light projecting section 3 to produce a light effect. Further, the main body 2 can be easily attached by simply inserting the main body 2 into the fluorescent lamp 1 and sliding it. The main body 2 can be slid to an arbitrary position of the fluorescent lamp 1, or the main body 2 can be rotated to collect light condensed at a necessary position. Try to project light. Therefore, the main body 2 can be attached at any position of the fluorescent lamp 1. If the spotlight-like light is not needed, the fluorescent lamp 1 alone can be used as the original illumination if the main body 2 is not attached. The shape of the main body 2 is one example, and the shape is not limited to the shape shown in the figure as long as the function of the main body 2 can be realized.

[Effects of the Invention] As described above, the present invention has a main body into which a straight tube type lamp is detachably inserted and which covers at least part of the outer peripheral surface in the longitudinal direction of the lamp over the entire circumference. A first reflector having a reflecting surface that curves along substantially the half circumference of the outer peripheral surface, and a second reflecting plate that has the reflecting surface that curves along the remaining substantially half circumference of the outer peripheral surface of the lamp and has an opening in the center Of the reflector and a cylindrical light projecting portion that is provided on the periphery of the opening so as to project in a direction away from the lamp. The main body is formed, and the surface facing the opening is disposed between the lamp and the opening. Since the third reflecting plate, which has a concave reflecting surface and reflects the light reflected by the second reflecting plate toward the opening, is arranged inside the main body, the main body is not attached to the lamp. In this condition, the lamp is used as a linear light source for the original lighting, and when the main unit is mounted on the lamp, it is projected. It is possible to illuminate as a point light source such as a spotlight through the light section. That is, it can be easily attached to a lighting device having a straight tube type fluorescent lamp, etc., and a point light source like a spotlight can be obtained by using a linear light source. There is an advantage that it can be used as two types of light sources. In addition, when making a fixture that requires base illumination and spotlight illumination, it does not require two types of light sources, and has the effect of simplifying the fixture structure. By arranging as described above, the light emitted around the lamp can be focused on the light projecting portion, and the light emitted from the lamp can be effectively used to obtain a high-intensity point light source. It has the effect of being able to.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention, and FIGS. 2 (a) and 2 (b) are a horizontal sectional view and a vertical sectional view, respectively. 1 is a fluorescent lamp, 2 is a main body, 3 is a light projecting portion, 8 is a reflector,
Reference numeral 9 is a reflector, and 10 is a reflector.

Claims (1)

[Scope of utility model registration request] 1. A straight-tube type lamp is detachably inserted and has a main body which covers at least a part of the outer peripheral surface in the longitudinal direction of the lamp over the entire circumference, and along a substantially half circumference of the outer peripheral surface of the lamp. A first reflector having a curved reflecting surface; a second reflector having a reflecting surface curved along the remaining approximately half circumference of the outer peripheral surface of the lamp and having an opening in the center; The main body is composed of a cylindrical light projecting portion that is provided on the periphery so as to project away from the lamp, and has a reflecting surface that is disposed between the lamp and the opening and has a concave curved surface facing the opening. A lighting device comprising a third reflecting plate disposed inside the main body, the third reflecting plate reflecting the light reflected by the second reflecting plate toward the opening.