JP2000164007A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire capable of preventing electric components from being exposed at the time of light distribution adjustment. SOLUTION: A reflection board 2 in the form of a parabolic curved surface is installed in a luminaire body 1 having a rectangular opening 1a in the under- part. The reflection board 2 includes a lamp 3 of straight tube type, and at the two ends of this lamp 3, sockets 4 are installed for holding the lamp 3 in electric connections. A stabilizer 5 is installed on the surface opposing to the opening 1a of the luminaire body 1. The reflection board 2 is pivotally supported turnably around the center of the lamp 3 as a rotary shaft. The reflection board 2, lamp 3, and socket 4 are arranged so that the rotary shaft is positioned inside the luminaire body 1 so that the board 2 does not protrude from the body 1 when the board 2 is rotated. At the open end of the board 2, a frame-shaped decoration plate 6 having approximately the same shape as the opening 1a is abuttingly installed in such a way as slidable along the open end. The abutting surface of the decoration plate 6 to the board 2 blocks the gap generated between the board 2 and luminaire body 1 when the reflection board 2 in sliding turns around the rotary shaft as flucrum.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device capable of adjusting light distribution.

[0002]

2. Description of the Related Art Japanese Patent Laid-Open No. 4-351801 discloses a lighting device capable of adjusting light distribution. FIG. 5 is a schematic sectional view showing a lighting device according to a conventional example, and FIG. 6 is a schematic perspective view showing a lighting device according to a conventional example. In this lighting apparatus, a parabolic curved reflecting plate 9 is attached to an apparatus main body 1 having an opening 1a on a lower surface, and the reflecting plate 9 includes a straight tube lamp 3 therein. A reflector receiving portion 10 is provided on one side of the opening end of the instrument body 1, and a holding bracket 11 is provided on the other side, and one side of the reflector 9 is placed on the reflector receiving portion 10.
The other side is detachably held by the holding bracket 11.
In addition, a ballast 5 is mounted inside the instrument body 1.

In this luminaire, the light distribution direction is adjusted by changing the light irradiation direction by rotating the other side with the one side of the reflector 9 located on the reflector receiver 10 as a fulcrum. Do.

[0004]

However, in the lighting fixture having the above-described structure, as shown in FIG. 7, when the reflecting plate 9 is rotated, the distance between the reflecting plate 9 and the fixture body 1 is increased. In such a case, there is a problem that a gap is formed and an electric component is exposed.

[0005] The present invention has been made in view of the above points, and it is an object of the present invention to provide a lighting apparatus capable of preventing exposure of electric components when adjusting light distribution. It is in.

[0006]

According to the first aspect of the present invention,
A fixture body having an opening formed at the lower end, a socket for mounting the straight tube fluorescent lamp, and a reflection surface facing the straight tube fluorescent lamp mounted on the socket, formed inward from the opening of the fixture body. In a lighting fixture having a reflector disposed downwardly in a groove shape, the reflector is pivotally supported so as to close a gap formed between a lower end of the reflector and the fixture body. A decorative plate is provided at the lower end of the reflection plate so as to swing freely.

According to a second aspect of the present invention, in the lighting apparatus according to the first aspect, an optical design is applied to the reflector so that the reflected light is collected.

According to a third aspect of the present invention, in the lighting fixture according to the first or second aspect, a frame-shaped decorative plate is used as the decorative plate.

According to a fourth aspect of the present invention, in the lighting apparatus according to the first or second aspect, a translucent material is used as the decorative plate.

According to a fifth aspect of the present invention, in the lighting fixture according to any one of the first to fourth aspects, when the reflector is rotated, the reflector does not protrude from the fixture body. It is characterized by having.

According to a sixth aspect of the present invention, in the lighting fixture of the fifth aspect, when the reflecting plate is rotated, the reflecting plate does not protrude from the main body of the lighting device. It is.

According to a seventh aspect of the present invention, in the lighting fixture of the fifth aspect, the reflection plate has a function of holding an arbitrary angle as the reflection plate does not protrude from the fixture body. It is a feature.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIGS. 1A and 1B are schematic cross-sectional views illustrating a lighting device according to an embodiment of the present invention. FIG. 1A is a schematic cross-sectional view illustrating a case where a reflector 2 is at a proper position, and FIG. FIG. 2 is a schematic cross-sectional view showing the position of the reflector 2 when the direction is changed, and FIG. 2 is a schematic perspective view of the lighting fixture according to the present embodiment. The lighting fixture according to the present embodiment has a parabolic reflector plate 2 inside a fixture body 1 formed in a rectangular housing shape having a rectangular opening 1a below.
Is attached. The reflector 2 includes a lamp 3 of a straight tube type, and sockets 4 for connecting and holding the lamp 3 are provided at both ends of the lamp 3. Also, the instrument body 1
The ballast 5 is disposed on the surface facing the opening 1a.

Here, the reflecting plate 2 is rotatably supported about the center of the lamp 3 as a rotation axis. Also, the reflection plate 2
The reflector 2, the lamp 3, and the socket 4 are arranged so that the rotation axis is located inside the instrument body 1 so that the reflector 2 does not project from the instrument body 1 when the is rotated. I have.

At the open end of the reflecting plate 2, a frame-shaped decorative plate 6 is provided so as to be slidable along the open end and has a substantially same shape as the shape of the opening 1a. Then, as shown in FIG. 1, the contact surface of the decorative plate 6 with the reflector 2 is
By rotating around the rotation axis while sliding, the decorative plate 6 closes the gap formed between the reflection plate 2 and the instrument body 1.

In this embodiment, the decorative plate 6
Although a frame-shaped member was used as the above, the present invention is not limited to this, and for example, a light transmitting material may be used.

Here, the decorative plate 6 does not protrude from the instrument body 1. As a configuration that does not protrude, for example, a rising portion is provided on the outer peripheral edge of the decorative plate 6, and the rising portion is brought into contact with the inner side surface of the instrument main body 1, or the turning angle of the reflection plate 2 is set to an arbitrary angle. There are various configurations, such as having a function of holding, or providing a projection extending toward the center of the opening at the opening end of the instrument body 1 to prevent the reflection plate 2 from projecting by the projection.

Next, an example of a configuration in which the reflecting plate 2 rotates around the rotation axis while the reflecting plate 2 slides on the contact surface of the decorative plate 6 with reference to FIG. 3 will be described. FIG. 3 is a schematic configuration diagram of a main part of a lighting device according to another embodiment of the present invention.
(A) is a schematic perspective view, (b) is a schematic sectional view. In the present embodiment, the shape of the terminal portion in the longitudinal direction of the decorative plate 6 is formed to have a substantially U-shaped cross section, and the locking portion 6a, which is the upper side of the U-shaped terminal portion, and the lower side are formed. It is configured so as to sandwich an extension 2a extending from a terminal portion in the longitudinal direction of the reflection plate 2.

Therefore, when the reflector 2 rotates about the center of the lamp 3 as a rotation axis, the extension 2 of the reflector 2
a slides on the decorative board 6 while being sandwiched between portions of the decorative board 6 having a substantially U-shaped cross section.

A description will be given of a configuration in which a translucent material 8 is used instead of the decorative plate 6. FIG. 4 is a schematic configuration diagram of main parts of a lighting fixture according to another embodiment of the present invention.
(A) is a schematic perspective view, (b) is a schematic sectional view. In the present embodiment, the upper side 7a and the lower side 7b
A guide portion 7 having a substantially U-shaped cross section is provided, and a light transmitting material 8 is fixed to the lower side portion 7b of the guide portion 7 with an adhesive or the like,
The configuration is such that the extending portion 2a is sandwiched between the upper surface of the light transmitting material 8 and the lower surface of the upper side portion 7a.

Accordingly, when the reflector 2 rotates about the center of the lamp 3 as a rotation axis, the extension 2
a slides on the light transmitting material 8 while being sandwiched between the lower surface of the upper side 7a and the upper surface of the light transmitting material 8.

[0022]

According to the first aspect of the present invention, there is provided an apparatus body having an opening formed at a lower end, a socket for mounting a straight tube fluorescent lamp, and a reflecting surface facing the straight tube fluorescent lamp mounted on the socket. In a lighting apparatus having a reflector formed and formed in a groove shape inward and downward from the opening of the fixture body, the reflector is pivotally supported, and a lower end of the reflector is provided. Since a decorative plate for closing a gap formed between the lighting device and the lighting device body is provided at the lower end of the reflecting plate so as to be swingable, a lighting device capable of preventing exposure of electric components during light distribution adjustment. Could be provided.

According to a second aspect of the present invention, in the lighting fixture of the first aspect, the reflecting plate is optically designed so that the reflected light is condensed. In addition, light can be efficiently emitted.

According to a third aspect of the present invention, in the lighting apparatus according to the first or second aspect, the decorative board has a frame shape.

According to a fourth aspect of the present invention, in the lighting apparatus according to the first or second aspect, a translucent material is used as the decorative plate.

According to a fifth aspect of the present invention, in the lighting apparatus according to any one of the first to fourth aspects, when the reflecting plate is rotated, the reflecting plate is rotated. Is constructed so as not to protrude from the device main body, so that in addition to the effects of the invention according to any one of claims 1 to 4, the appearance is not impaired.

[Brief description of the drawings]

FIGS. 1A and 1B are schematic cross-sectional views illustrating a lighting device according to an embodiment of the present invention, in which FIG. 1A is a schematic cross-sectional view illustrating a case where a reflector is at a regular position, and FIG. FIG. 7 is a schematic cross-sectional view showing the position of the reflector when changing the position.

FIG. 2 is a schematic perspective view of a lighting device according to the present embodiment.

FIGS. 3A and 3B are schematic configuration diagrams of main parts of a lighting apparatus according to another embodiment of the present invention, FIG. 3A is a schematic perspective view, and FIG.
Is a schematic sectional view.

FIGS. 4A and 4B are schematic perspective views of main parts of a lighting device according to another embodiment of the present invention, FIG. 4A is a schematic perspective view, and FIG.
Is a schematic sectional view.

FIG. 5 is a schematic sectional view showing a lighting device according to a conventional example.

FIG. 6 is a schematic perspective view showing a lighting apparatus according to a conventional example.

FIG. 7 is a schematic cross-sectional view showing a state where a reflecting plate of a lighting apparatus according to a conventional example is rotated.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Instrument main body 1a Opening part 2 Reflecting plate 2a Extension part 3 Lamp 4 Socket 5 Ballast 6 Decorative plate 6a Locking part 7 Guide part 7a Upper side part 7b Lower side part 8 Translucent material 9 Reflecting plate 10 Reflecting plate receiving part 11 Suppression Metal fittings

Claims (7)

[Claims] An apparatus body having an opening formed at a lower end, a socket for mounting a straight tube fluorescent lamp, and a reflecting surface facing the straight tube fluorescent lamp mounted on the socket, wherein the opening of the apparatus body is formed. A reflector disposed in a groove shape inwardly downward from the part, wherein the reflector is rotatably pivotally supported and formed between a lower end of the reflector and the fixture body. A decorative plate for closing a gap to be formed is provided at the lower end of the reflection plate so as to swing freely. 2. The lighting apparatus according to claim 1, wherein the reflector is optically designed so that the reflected light is collected. 3. The lighting fixture according to claim 1, wherein the decorative board has a frame shape. 4. The lighting fixture according to claim 1, wherein a light transmitting material is used as the decorative plate. 5. The lighting fixture according to claim 1, wherein the reflector does not protrude from the fixture body when the reflector is rotated. 6. The lighting apparatus according to claim 5, wherein the reflection plate is configured so that the reflection plate does not protrude from the fixture main body, and the reflection plate is brought into contact with the shielding plate. 7. The lighting fixture according to claim 5, wherein the reflector does not protrude from the fixture body, and the reflector has a function of holding an arbitrary angle.