JPS6325609Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a cover frame support device for lighting equipment.

A configuration is already known in which a cover frame supporting a translucent cover is suspended from and connected to an instrument body using a V-shaped spring.
FIG. 1 shows a conventional example, in which 1 is a device main body, 2 is a translucent cover, 3 is a cover frame, 4 is a V-shaped spring, 5 is a bracket, and 6 is a spring support. The central winding portion 4A of the tight spring 4 interlinks with a spring support 6 supported by the instrument body 1, and the tip portion 4C of the leg portion 4B engages with a receiving metal fitting 5 integrated with the cover frame 3. It's like this. In FIG. 1, the cover 2 is in a state where it has been pulled down from the instrument body 1, and at this time, the tip portions 4C of both legs 4B, which are bent into a key shape, engage the holder 5 to prevent further descent. are doing. At this time, both leg portions 4B are connected to the center winding portion 4A.
However, as described above, the engagement between the distal end portion 4C and the receiving fitting 5 restricts the expansion.

To attach the cover 2 to the instrument body 1, the cover 2 is simply pushed up, and the metal receiving brackets 5 slide against both legs 4B as the cover 2 rises. As the cover rises, the legs 4B gradually open due to the elasticity described above. The opening force at this time causes the cover 2 to rise. Once the cover 2 has risen sufficiently, the opening force of the legs 4B presses the cover 2 against the instrument body 1, so that the cover 2 is attached. To remove the cover 2 from the instrument body 1, the cover 2 is simply pulled down against the opening force of the legs 2B. Then, the tip ends 4C of the legs 2B are pulled apart.
Further descent is restricted at the position where it engages with the receiving metal fitting 5. Fig. 1 shows the state at this time.

Normally, the tight spring 4 and the bracket 5 are attached to the cover frame 3.
(see Fig. 4), and when the cover 2 is raised or lowered, it is pulled down against the elasticity of both tight springs 4 and raised by the spreading force of the legs of both tight springs. I try to let them do it.

By the way, as mentioned above, the time when it is necessary to pull down the cover 2 is generally when the fluorescent lamp is replaced. In this case, remove the tip 4C of the leg 4B from the bracket 5 for one of the two tight springs, and rotate it as shown in FIG. 2 around the periphery of the cover 2 where the other tight spring is installed. . By this rotation, the cover 2 is widely removed from the lower surface of the instrument body 1, making it easy to replace the fluorescent lamp.

However, when the cover 2 is rotated significantly, depending on the shape of the instrument, the bent edge 1A of the instrument body 1 and the leg portion 4B of the stiff spring 4 may collide with each other, as shown in FIG. One or both edges 1A are bent or damaged. Alternatively, the leg portions 4B and the cover frame 3 collide, and one or both of the leg portions 4B, the cover frame, or the cover 2 is bent or damaged. In order to avoid such bending and damage, the cover 2 cannot be rotated sufficiently widely, making it inconvenient to replace the lamp.

The purpose of this invention is to reliably prevent the stiff spring from colliding with the instrument body or the cover when the cover is rotated.

An embodiment of this invention will be explained with reference to FIG. 4 and subsequent figures. Note that parts given the same reference numerals as in FIG. 1 indicate the same or corresponding parts. The appliance main body 1 is fixed to a ceiling 11 or the like, and a pair of stiff springs 4 are installed on opposing peripheral edges thereof. 12 is a fluorescent lamp. Cover frame 3 is attached to opening edge 2A of cover 2.
is fixed. That is, the frame fittings 3A and 3B forming the cover frame 3 are fixed so as to sandwich the opening edge 2A.

The bracket 5 is installed on the cover frame 3,
According to this idea, this receiving metal fitting 5 is rotatably installed with respect to the cover frame 3. FIG. 5 shows the details. Notches 13 in frame fittings 3A and 3B
A standing wall portion 14 is formed on the peripheral edge of the notch by bending a part of the frame fitting. A hole 15 is provided in each standing wall portion 14.

The receiving fitting 5 has a groove 5B formed in its flat portion 5A as in the conventional case, and the leg 4B of the spring 4 slides into each end of the groove 5B, or the tip 4C engages. Flat part 5A of bracket 5
one side edge of is bent to form a back portion 16;
Also, a part of the other side edge is bent to form a pair of front wall parts 1.
7 is formed. A hook portion 18 is provided on the outer edge of this front wall portion 17 to serve as the pivot axis of the receiving metal fitting 5. The hook portion 18 is inserted into the hole 15 and supported. With this support, the receiving metal fitting 5 is rotatably supported relative to the cover frame 3.

FIG. 6 shows a state corresponding to FIG. When the engagement between one of the tight springs 4 and its receiving metal fitting 5 is released, the cover 2 becomes rotatable about the other receiving metal fitting 5 as shown in FIG. As this rotation occurs, the cover frame 3 is allowed to rotate clockwise about the hook 18 with respect to the receiving metal fitting 5 which is engaged with the leg portion 4B of the tight spring 4 and is in a stationary state. As the cover rotates, the cover gradually rotates toward the upright position as shown in FIG. However, even during this rotation process, the relative rotational relationship between the bracket 5 and the cover frame 3 is allowed, so until now the tight spring 4 has been almost stationary, and therefore the cover frame 3 and the tight spring 4 are There is no collision as shown in the figure. Also, collision between the tight spring 4 and the bent edge 1A of the instrument body 1 can be sufficiently avoided. Therefore, bending and damage of the stiff spring 4 and the cover frame 3 can be reliably prevented.

As described in detail above, according to this invention, since the bracket of the tight spring is rotatably supported with respect to the cover frame, even if the cover is rotated widely when replacing the lamp, the tight spring and the cover frame can be easily moved. collision can be reliably avoided, so the tight spring,
This can sufficiently prevent damage to the cover frame, and there is no need to use a hinge with a fixed part and a movable part to rotate the bracket, and therefore the fixed part can be used as a cover. There is no need for fixing with screws or the like, and therefore the structure for rotation can be made extremely simple.

[Brief explanation of the drawing]

1 to 3 are partial front views for explaining the operation of the conventional example, FIG. 4 is a front view showing an embodiment of this invention, FIG. 5 is an enlarged perspective view of the main parts, and FIGS. 6 to 8
The figure is a partial front view for explaining the operation. 1... Instrument body, 2... Cover, 3... Cover frame, 4... Hard spring, 4B... Leg portion, 5... Receiving metal fitting, 18... Hook portion.

Claims (1)

[Scope of utility model registration request] A device body 1, a spring support 6 supported by the device body 1, and a central winding portion 4 on the spring support 6.
A V-shaped tight spring 4 in which A is interlinked, a receiving bracket 5 on which the legs 4B of the tight spring 4 are elastically slidably engaged, and a translucent cover 2 that covers the lower surface of the device main body 1. The opening edge 2A of the cover 2
A part of the cover frame 3 is bent to form an upright wall part 14 having holes 15 on both sides of the cutout part 13 formed in the cover frame 3 fixed to the cover frame 3. A pair of front wall portions 17 are formed by bending a part of the side edges of the metal fittings 5, and a hook portion 18 serving as a center of rotation of the receiving metal fitting 5 is formed on the outer edge of each of the front wall portions 17. A cover frame support device for a lighting fixture, in which the receiving metal fitting 5 is rotatably supported with respect to the cover frame 3 by inserting the hook portion 18 into the hole 15.