JPH02309506A - Luminaire - Google Patents

Abstract

PURPOSE:To facilitate the maintenance work by engaging connecting parts having a U-shaped section formed in an optical control plate and a frame with each other, and enabling the fixation of the freely switchable optical control plate to the frame easily. CONSTITUTION:In an indirect type luminaire 1, at the time of exchanging straight tube type fluorescent lamps 81, 82, a worker turns a locking screw 12 to remove it from a L shape fitting 11 to open a shading plate 7 to the lower. The respective straight tube type fluorescent lamps 81, 82 are exposed under the separated condition, and the worker can exchange the fluorescent lamps 81, 82 easily. Furthermore, since a touch to circuit parts such as a stabilizer 19, etc. which is orinarily positioned in the rear of the shading plate 7 is facilitated by opening the shading plate 7 to the lower, various maintenance work can be facilitated. After finishing the maintenance work, the shading plate 7 is closed to be fixed with the locking screw 12. At this stage, the fluorescent lamps 81, 82 are covered with the shading plate 7 from the lower, and the indirect illumination of the insider of a vehicle or the like can be performed well.

Description

[Detailed description of the invention] Industrial applications TECHNICAL FIELD The present invention relates to lighting equipment.

Conventional technology In recent years, various types of lighting equipment have been manufactured in response to various requests.
Many devices are equipped with a light control plate to prevent the direct light from the light source from directly entering the eye. Lighting fixtures with this type of structure include indirect lighting fixtures, in which a light source mounted on the ceiling is covered from below with a light-shielding plate to provide indirect lighting using reflected light from the ceiling, and indirect lighting fixtures, in which the light source is mounted on the ceiling and covered with a light-transmitting plate. There are direct lighting devices that provide direct illumination using transmitted light.

Problems to be Solved by the Invention The above-mentioned indirect lighting equipment has a structure in which a light control board covers the light source attached to the ceiling or the like from below, so in order to perform maintenance work such as replacing the light source, it is necessary to It is necessary to remove or open the board. Therefore, it is possible to removably fix the light control board to the frame using bolts and nuts, etc., but this method not only makes the installation and removal work complicated and time-consuming, but also there is a possibility that the removed light control board may fall. Not practical. On the other hand, it is also possible to attach the light control board to the frame with a hinge so that it can be opened and closed.
In this case, there is a high possibility that light will leak from the gap between the light control plate and the frame, and it will be necessary to provide a gasket or the like, which is not preferable.

Means for Solving the Problems The invention as set forth in claim 1 is a lighting fixture provided with a light control plate that covers a fluorescent lamp from below. A holding member is provided which engages with the frame and is attached to the surface of the frame and faces the connection portion of the light control plate from above, and a fixing means for removably fixing the light control plate to the holding member is provided.

In the second aspect of the invention, the distance between the lower surface of the holding member and the upper edge of the connecting portion of the frame is set to be smaller than the length of the folded portion of the connecting portion of the light control plate.

By interlocking the connecting portions formed in the working light control plate and the frame and having a U-shaped cross section, the light control plate can be connected to the frame in a manner that can be opened and closed while preventing light leakage, and By providing a holding member that is attached to the surface of the frame and facing the connecting portion of the light control plate from above, and providing a fixing means for detachably fixing the light control plate to this holding member,
The light control board, which can be opened and closed, can be easily fixed to the frame.

Furthermore, by setting the distance between the lower surface of the holding member and the upper edge of the connecting portion of the frame to be smaller than the folded length of the connecting portion of the light control plate, the light control plate, which can be opened and closed with a simple structure, is prevented from coming off the frame. be able to.

Embodiment An embodiment of the present invention will be explained based on FIGS. 1 to 3. First, in the indirect lighting device 1 of this embodiment, a fixed frame 4 is fixed to a mounting frame 3 embedded in a wall portion 2 with screws 5. Straight tube fluorescent lamps 8.
．． 8. is installed. Here, the edges of the fixed frame 4 and the light shielding plate 7 are each bent into a U-shape and are engaged with each other as connecting parts 9 and 10, and an L-shaped metal fitting is attached to the surface of the fixed frame 4 here. 11 facing from above, the light shielding plate 7 can be opened and closed downward without coming off the fixed frame 4. The light shielding plate 7 is removably fixed to the above-mentioned bracket 11 which is a holding member with a set screw 12 which is a fixing means, and faces the ceiling surface 6 while holding the straight tube fluorescent lamp 8t. There is. Note that the front surface of the mounting frame 3 is not continuous, but has approximately vertical flat plate-shaped upper and lower protruding pieces 13. which face each other from above and below.
14 is formed. Further, upper and lower locking pieces 17 and 18 having an L-shaped cross section are provided on the upper and lower rear surfaces of the fixed frame 4, respectively, and have upward and downward protrusions 15 and 16, respectively.

The circuit components such as the stabilizer 19 are mounted on the cupboard fixing frame 4.
It is mounted on the lower locking piece 18 on the rear surface and arranged inside the mounting frame 3. Furthermore, in this indirect lighting fixture 1, a reflector plate 20 is provided on the front surface of the fixed frame 4 to face the straight tube fluorescent lamp 8□.

In such a configuration, the indirect lighting fixture 1 is attached to both sides of the ceiling of the railway vehicle 21, for example, as illustrated in FIG. 3, and illuminates the room with indirect light. In this indirect lighting fixture 1, since the straight tube fluorescent lamps 8 are arranged in two rows, illumination is performed by indirect light with high illuminance.

Note that this indirect lighting fixture 1 uses a straight tube fluorescent lamp 8. ,
8. When replacing the light-shielding plate 7, an operator (not shown) rolls the set screw 12 to remove it from the L-shaped fitting 11, and opens the light-shielding plate 7 downward. Then, as illustrated in FIGS. 1 and 2(b), each straight tube fluorescent lamp 8. ．． 8. The workers had to take a bath in the open air with the lights separated from them, and the workers were forced to use straight tube fluorescent lamps 8. ．． 8.
etc. can be easily replaced. Furthermore, by opening the light shielding plate 7 downward in this manner, circuit components such as the ballast 19 that are normally located deep within the light shielding plate 7 can be easily accessed, thereby facilitating various maintenance operations.

Once the above maintenance work is completed,
The operator closes the light shielding plate 7 together with the straight tube fluorescent lamp 8t and fixes it with the set screw 12. Therefore, Fig. 1 and Fig. 2 (a)
As illustrated in 8. , 8. are substantially covered by the light shielding plate 7 from below in a close state, and provide indirect illumination of the inside of the railway vehicle 21 and the like.

In addition, in the indirect lighting device 1 of this embodiment, the light shielding plate 7 is connected to the fixed frame 4 by interlocking the connecting parts 9 and 10 bent in a U-shape, so that the light shielding plate 7 can be connected with a simple structure. Even though it can be opened and closed freely, there is no light leakage. Moreover, as illustrated in FIG. 1(b), the fixed frame 4
Since the distance a between the upper edge of the connecting part 9 and the lower surface of the L-shaped fitting 11 is set smaller than the length of the folded part of the connecting part 1o of the light shielding plate 7, the light shielding plate 7 cannot be detached from the fixed frame 4. It can be opened and closed freely. These members are easily assembled by engaging the connecting portion 10 of the light shielding plate 7 with the connecting portion 9 of the fixed frame 4 attached to the wall 2, and screwing the L-shaped fitting 11 to the fixed frame 4. . Also,
The connection structure between these members 4 and 7 is not limited to the one described above. For example, it is also possible to use a normal hinge (not shown), but in this case, it is necessary to prevent light leakage. It is necessary to provide a gasket (not shown), etc. Furthermore, in this indirect lighting fixture 1, each circuit component such as the heavy ballast 19 is provided on the rear surface of the fixed frame 4, so the light shielding plate 7 is lightweight and easy to open and close, making maintenance work easier. It seems to be working fine.

Although the indirect lighting device 1 of this embodiment uses a straight tube fluorescent lamp 8 as the fluorescent lamp, the present invention is not limited to this. It is also possible to employ a U-shaped fluorescent lamp (not shown). Further, in this embodiment, the indirect lighting fixture 1 using the light shielding plate 7 as a light control plate is illustrated, but the present invention is not limited to this. For example, the light source may be covered from below with a transparent plate. It is also applicable to direct lighting equipment (not shown).

Effects of the Invention As described above, the present invention allows the light control plate to be opened and closed to the frame while preventing light leakage by engaging the connecting portions formed on the light control plate and the frame and having a U-shaped cross section. A holding member that can be freely connected and is attached to the surface of the frame and faces from above the connecting portion of the light control plate is provided, and a fixing means for detachably fixing the light control plate to the holding member is provided. This allows the light control board, which can be opened and closed, to be easily fixed to the frame, and the light control board can be easily opened downward by removing the fixing means, so it is usually located inside the light control board. Various maintenance work can be easily carried out on fluorescent lamps that are connected to the light control board.Furthermore, the distance between the lower surface of the holding member and the upper edge of the connection part of the frame is set smaller than the length of the folded part of the connection part of the light control board. This structure has effects such as being able to prevent the openable and closable light control plate from coming off the frame.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional side view showing an embodiment of the present invention, FIG. 2 is a perspective view, and FIG. 3 is an explanatory view showing the state of use. 1... Indirect lighting equipment, 4... Frame, 7...
Preemptive soundboard, 8... Fluorescent lamp, 9, 1o... Connecting part, 1
1... Holding member, 12... Fixing means Applicant Tokyo Electric Co., Ltd. j Figure 7 (a) 1

Claims (1)

[Scope of Claims] 1. In a lighting fixture provided with a light control plate that covers a fluorescent lamp from below, a connection portion having a U-shaped cross section formed on the light control plate and the frame is engaged, and the surface of the frame is 1. A lighting fixture, comprising: a holding member attached to a connecting portion of the light control plate facing from above, and a fixing means for removably fixing the light control plate to the holding member. 2. The lighting device according to claim 1, wherein the distance between the lower surface of the holding member and the upper edge of the connecting portion of the frame is set to be smaller than the length of the folded portion of the connecting portion of the light control plate.