JPH0686212U - lighting equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a lighting fixture capable of controlling light distribution without adversely affecting the fixture efficiency. [Structure] A light source 3 which is a straight tube type fluorescent lamp mounted in a socket 6 housed in an instrument main body 1, and a reflection plate 4 which is located above the fluorescent lamp 3 and reflects light from the fluorescent lamp 3. The louver 2 is located below the fluorescent lamp 3 in the cross-sectional direction of the fluorescent lamp 3 and controls the light distribution from the fluorescent lamp 3. Neighborhood B
The cover 5 is attached to the upper surface of the louver 2 so that the above is closer to the fluorescent lamp 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a louver for a lighting fixture.

[0002]

[Prior art]

 In the conventional luminaire, as shown in FIG. 6, the louver 20 provided in the luminaire main body 10 often has an opening 21 on the upper surface thereof for convenience of production. Therefore, there is a problem in that light is absorbed in the opening 21 and the efficiency of the instrument is deteriorated. Therefore, as shown in FIG. 7, it has been proposed that the upper surface of the louver 20, which is the light source 30 such as a straight tube fluorescent lamp, located below is formed in a substantially triangular cross section. However, there has been a problem that the original function of the louver 20, that is, the light distribution control cannot be sufficiently performed.

[0003]

[Problems to be solved by the device]

 The problem to be solved by the present invention is that the louver that controls the light distribution of the light source reduces the efficiency of the equipment, and the purpose of the present invention is to distribute the light without adversely affecting the efficiency of the equipment. An object of the present invention is to provide a lighting device capable of controlling light.

[0004]

[Means for Solving the Problems]

 The present invention includes a reflector located above the light source and reflecting the light from the light source, and a louver located below the light source in the cross-sectional direction of the light source and controlling the light distribution of the light from the light source. In the luminaire, the louver is configured such that the louver upper surface is closer to the light source near the center than near the ends.

[0005]

[Action]

 The present invention includes a reflector located above the light source and reflecting the light from the light source, and a louver located below the light source in the cross-sectional direction of the light source and controlling the light distribution of the light from the light source. In the luminaire, the louver is configured such that the louver upper surface is closer to the light source in the vicinity of the center than in the vicinity of both ends, so that the direct light blocked by the louver is small. It is possible to obtain reflected light outside the device depending on the number of times of reflection, which has the effect of improving the device efficiency.

[0006]

【Example】

 1 to 3 show a first embodiment of the present invention. The structure is such that the instrument body 1, the light source 3 which is a straight tube type fluorescent lamp attached to the socket 6 housed in the instrument body 1, and the light from the fluorescent lamp 3 which is located above the fluorescent lamp 3. A luminaire comprising: a reflecting plate (4) for reflecting light; and a louver (2) located below the fluorescent lamp (3) in the cross-sectional direction of the fluorescent lamp (3) and controlling light distribution of the light from the fluorescent lamp (3). 2, the cover 5 is attached to the upper surface of the louver 2 so that the upper surface of the louver 2 is closer to the fluorescent lamp 3 in the vicinity of the center B than in the vicinity of both ends A.

Here, the louver 2 has a substantially parabolic shape on the upper surface of the louver 2, and a cover 5 having a substantially parabolic shape is attached. Further, the facing portion C of the reflecting plate 4 facing the upper surface of the louver 2 is configured to reflect light in the longitudinal direction of the fluorescent lamp 3.

With this structure, the parabolic cover 5 on the upper surface of the louver 2 avoids the fluorescent lamp 3 in the direction of the reflection plate 4 as much as possible, so that the light irradiated on the upper surface of the louver 2 is prevented. In addition to being able to reflect to the reflection plate 4, the reflection plate 4 that has received the light is reflected by the facing portion C so as to diffuse the light again in the longitudinal direction of the fluorescent lamp 3, so that it is blocked by the louver 2. Further, the direct light from the fluorescent lamp 3 can be obtained as reflected light outside the device with a small number of reflections, which has the effect of improving the device efficiency.

Next, FIG. 4 shows a second embodiment of the present invention. The structure different from that of the first embodiment is that the vicinity A of both ends of the upper surface of the louver 2 is formed into an inclined surface or a curved surface, and the vicinity B of the center is formed into a substantially flat surface, and the cover 5 is attached to the surface. The same components as those described above are designated by the same reference numerals, and redundant description will be omitted.

With this configuration, the configuration can be simplified and the same effect as the first embodiment can be obtained.

FIG. 5 shows a third embodiment of the present invention. The structure different from that of the second embodiment is that a substantially flat surface near the center B of the upper surface of the louver 2 is a diffuse reflection surface having a triangular cross section. The same components as those described above are designated by the same reference numerals, and redundant description will be omitted.

With this configuration, the light can be diffused more and the same effect as the second embodiment can be obtained.

[0013]

[Effect of device]

 The present invention includes a reflector located above the light source and reflecting the light from the light source, and a louver located below the light source in the cross-sectional direction of the light source and controlling the light distribution of the light from the light source. In the luminaire, the louver is configured such that the louver upper surface is closer to the light source in the vicinity of the center than in the vicinity of both ends, so that the direct light blocked by the louver is small. It is possible to obtain reflected light outside the device depending on the number of times of reflection, and it is possible to achieve a remarkable effect of improving the device efficiency.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a first embodiment of the present invention.

FIG. 2 is a configuration diagram showing a first embodiment of the present invention.

FIG. 3 is a configuration diagram showing a first embodiment of the present invention.

FIG. 4 is a configuration diagram showing a second embodiment of the present invention.

FIG. 5 is a configuration diagram showing a third embodiment of the present invention.

FIG. 6 is a block diagram showing a conventional example of the present invention.

FIG. 7 is a block diagram showing a conventional example of the present invention.

[Explanation of symbols]

 2 Louver 3 Light source 4 Reflector A Near both ends B Near the center

Claims (5)

[Scope of utility model registration request] 1. A light source, a reflection plate located above the light source and reflecting light from the light source, and a light distribution control of the light from the light source, which is located below the light source in the transverse direction of the light source. A luminaire including a louver, wherein the louver is configured such that the louver upper surface is closer to the light source near the center than near the ends. 2. The luminaire according to claim 1, wherein the louver is configured such that an upper surface of the louver has a substantially parabolic shape. 3. The luminaire according to claim 1, wherein the louver has an inclined surface or a curved surface near both ends of the louver upper surface and a substantially flat surface near the center. 4. The luminaire according to claim 1, wherein the louver has an inclined surface or a curved surface near both ends of the louver upper surface and a diffuse reflection surface near the center. 5. The luminaire according to claim 1, wherein the facing portion of the reflector plate facing the upper surface of the louver is configured to reflect in the longitudinal direction of the light source.