JP2000340023A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire capable of having an optimum temperature in a luminaire body and optimum lamp light output according to a kind of an option member attached to a light-transmitting opening of the luminaire body. SOLUTION: This luminaire has lamps 3, a reflection plate 2 for reflecting light output of the lamps 3 toward the front face, and a luminaire body 1 storing the lamps 3 and the reflection plate 2 and formed with a light-transmitting opening on the front face side. A distance between the lamps 3 and the reflection plate 2 can be varied according to an option member (e.g. a louver 5 or a panel) attached to the light-transmitting opening.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a lighting fixture.

[0002]

2. Description of the Related Art FIG. 8 is a schematic side sectional view of a conventional example according to the present invention.

FIG. 8 shows a conventional luminaire. The luminaire includes a main body 1 (hereinafter, referred to as a main body).
It comprises a reflector 2, a lamp 3, a frame 4, and a louver 5.

The apparatus main body 1 has a substantially box-like shape having a light-transmitting opening on the lower surface side, which is the front side, and a lamp for mounting a lamp 3, such as a fluorescent lamp, near both ends and on the back side. A socket (not shown) is provided. A lighting device (not shown) for lighting the lamp 3 is mounted inside the main body 1, and the light from the lamp 3 is provided on the front side between the lighting device and the mounted lamp 3. A reflection plate 2 that reflects light to the side is provided.

The louver 5 is a light distribution control member formed of metal or resin so as not to transmit light. The louver 5 is attached to a light-transmitting opening of the main body 1 by a frame 4 so as to transmit light from the lamp 3. The light distribution is controlled by partially shielding the light.

FIG. 9 is a schematic side sectional view of another conventional lighting fixture. The difference from the conventional example shown in FIG. 8 is that a panel 6 having a light transmitting property is provided instead of the louver 5. Therefore, the same components as those of the conventional example shown in FIG.

[0007]

However, in the above-mentioned prior art, since the positions of the reflector 2 and the lamp 3 are fixed in advance, an optional member (for example, FIG. Depending on the type of the louver 5 shown in FIG. 9 and the type of the panel 6) shown in FIG. 9, the temperature inside the main body 1 varies, and the light output of the lamp 3 greatly varies due to the temperature variation. Would.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to obtain an optimum temperature in an instrument main body according to a type of an optional member attached to a light-transmitting opening of the instrument main body. An object of the present invention is to provide a lighting device capable of obtaining an optimum lamp light output.

[0009]

According to the first aspect of the present invention, there is provided a lamp, a reflector for reflecting the light output of the lamp to a front side, and a lamp and a reflector therein. In a lighting fixture having a fixture body in which a plate is accommodated and a light-transmitting opening is provided on the front side, it is possible to move a distance between a lamp and a reflector in accordance with an optional member attached to the light-transmitting opening. Features.

According to a second aspect of the present invention, in the lighting fixture of the first aspect, the reflecting plate is movable according to an optional member attached to the light transmitting opening.

According to the third aspect of the present invention, in the luminaire according to the first or second aspect, when the optional member is a louver, the distance between the lamp and the reflector is short, and the optional member is a panel. In this case, the distance between the lamp and the reflector is increased.

According to a fourth aspect of the present invention, in the luminaire according to any one of the first to third aspects, the reflector has a substantially arc shape at a portion directly above the lamp. Features.

[0013]

(Embodiment 1) FIGS. 1 and 2 are schematic side sectional views of a first embodiment according to the present invention.

The difference from the conventional example shown in FIGS. 8 and 9 is that
The configuration is such that the distance between the reflector 2 and the lamp 3 is changed according to the type of an optional member to be attached to the light-transmitting opening of the apparatus body. The description will be omitted by attaching.

The lamp 3 is arranged at a position that satisfies the opaque angle of the louver 5 or eliminates uneven brightness of the panel 6.
Is configured such that the position of the reflector 2 can be moved relative to the position. In the case of a louver-type lighting device as shown in FIG. 1, since heat can be radiated from the main body 1 to some extent by the louver 5, a lighting device of a panel type as shown in FIG.
The temperature inside the main body 1 becomes relatively low. Therefore, the distance a between the reflector 2 and the lamp 3 in the lighting fixture shown in FIG.
And reflector 3 and lamp 3 in the lighting fixture shown in FIG.
The relationship with the distance b between a and b is a <b, and the reflector 2 is positioned so that the temperature inside the main body 1 is optimized in any type of lighting fixture. When nothing is provided in the light-transmitting aperture, the reflector 2 may be positioned so as to be shorter than the distance a.

In order to position the reflection plate 2, for example,
The positioning may be performed by using positioning members 8a and 8b as shown in FIGS. 3 and 4, or other means may be used.

[0017] With the above-described configuration, it is possible to carry out simple installation without deteriorating the light blocking angle and the brightness unevenness, etc., and to set the optimum interior of the appliance body according to the type of the optional member to be attached to the light-transmitting opening of the appliance body. It is possible to provide a lighting device capable of obtaining a temperature and optimizing (for example, substantially the same) the light output of the lamp.

(Embodiment 2) FIG. 5 shows a schematic side sectional view of a second embodiment according to the present invention.

The difference from the first embodiment shown in FIGS. 1 and 2 is that, instead of the reflector 2, a reflector 7 having a substantially arc-shaped portion immediately above the lamp 3 is provided. The description of the same components as those of the other first embodiment will be omitted by retaining the same reference numerals. Although louvers and panels are not shown in FIG. 5, they may be provided as appropriate.

With the above configuration, the reflection plate 7
The light reflected by the lamp 3 is efficiently re-incident on the lamp 3, the temperature of the lamp 3 can be efficiently increased, and the light output of the lamp 3 can be efficiently improved. FIG. 6 is a cross-sectional view of a main part when the distance between the lamp 3 and the reflector 7 is short, and FIG. 7 is a cross-sectional view of a main part when the distance between the lamp 3 and the reflector 7 is long. Show.

[0021]

According to the first to third aspects of the present invention, the type of the optional member to be attached to the light-transmitting opening of the appliance body by simple construction without impairing the light-shielding angle and uneven brightness. Accordingly, it is possible to provide an illuminating device that can obtain an optimum temperature in the fixture body and optimize the light output of the lamp (for example, substantially the same).

According to the invention described in claim 4, according to claim 1,
In addition to the effects of the present invention, the light reflected by the reflector is efficiently re-entered into the lamp, the temperature of the lamp can be efficiently increased, and the light output of the lamp can be increased. The lighting device which can improve efficiently can be provided.

[Brief description of the drawings]

FIG. 1 shows a schematic side sectional view of a first embodiment according to the present invention.

FIG. 2 shows another schematic side sectional view of the first embodiment according to the present invention.

FIG. 3 is a schematic side cross-sectional view when a positioning member 8a is provided in the first embodiment according to the present invention.

FIG. 4 is a schematic side sectional view showing a case where a positioning member 8b is provided in the first embodiment according to the present invention.

FIG. 5 is a schematic side sectional view of a second embodiment according to the present invention.

FIG. 6 is a cross-sectional view of a main part when the distance between the lamp 3 and the reflector 7 is short in the second embodiment according to the present invention.

FIG. 7 is a cross-sectional view of a main part when the distance between the lamp 3 and the reflector 7 is long in the second embodiment according to the present invention.

FIG. 8 shows a schematic side sectional view of a conventional lighting fixture according to the present invention.

FIG. 9 shows a schematic side sectional view of another conventional lighting fixture according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Instrument main body 2, 7 Reflector 3 Lamp 4 Frame 5 Louver 6 Panel

Claims (4)

[Claims] 1. An apparatus body comprising a lamp, a reflector for reflecting the light output of the lamp to the front side, and a light-transmitting opening provided on the front side in which the lamp and the reflector are housed. The lighting apparatus according to claim 1, wherein a distance between the lamp and the reflecting plate is movable according to an optional member attached to the light-transmitting opening. 2. The lighting apparatus according to claim 1, wherein the reflector is movable in accordance with an optional member attached to the light-transmitting opening. 3. When the optional member is a louver, the distance between the lamp and the reflector is short, and when the optional member is a panel, the distance between the lamp and the reflector is long. The lighting device according to claim 1 or 2, wherein 4. The lighting apparatus according to claim 1, wherein the reflector has a substantially arc-shaped portion directly above the lamp.