JPS6029132Y2 - lighting equipment - Google Patents

Description

[Detailed explanation of the idea] This proposal concerns the improvement of lighting equipment.

Generally, this type of lighting equipment is constructed by storing and fixing a ballast in a main body with a U-shaped side cross section, and fixing a reflector to the main body. Since the main body of the device is made slim from the viewpoint of performance, the side plate portion of the device comes extremely close to the opposing wall surface of the ballast, which has the disadvantage of increasing noise caused by leakage magnetic flux.

In view of these points, the present invention provides a lighting fixture that can effectively reduce noise caused by leakage magnetic flux even if the distance between the side plate of the fixture body and the ballast becomes narrow. I will explain about it.

In the figure, reference numeral 1 denotes a device main body with a U-shaped side cross-section, and a mounting hole 2 for a stabilizer (described later) is provided in the bottom plate portion 1a, and a mounting hole 2 for a stabilizer, which will be described later, is provided in the upper end of the side plate portions 1b and 1b throughout the longitudinal direction. Semicircular bent portions 3, 3 are formed over the entire length.

Reference numeral 4 denotes a ballast, which is constructed by, for example, housing a ballast element consisting of a core and a coil in a cylindrical case 5, and filling a space between the casing 5 and the ballast element.

The bottom plate part 5a at the end of the case 5 has a mounting hole 6 for attachment to the instrument main body 1, and side plate parts (wall surfaces) 5b, 5.
Holes 7, 7 for locking bushings, which will be described later, are formed in b, respectively.

In addition, the stabilizer 4 has respective mounting holes 2 and 6 in the device body 1.
It is fixed with bolts and nuts inserted into the.

A bushing 8 is made of an elastic member such as rubber, and includes a head 9 having a sufficiently larger diameter than the hole 7 of the stabilizer 4, and a head 9 that is slightly larger than the hole 7 and has a diameter that is slightly larger than the hole 7. It is composed of a locking part 10 having a diameter that allows insertion, and a leg part 11 connecting the head 9 and the locking part 10.

This bushing 8 is inserted into the hole 7 of the ballast 4 at the locking portion 1.
The insertion and locking is performed by elastically deforming the 0.

Reference numeral 12 denotes a mounting bracket, and semicircular bent portions 13, 13 that fit into the bent portions 3, 3 of the instrument main body 1 are integrally formed at both ends thereof.

The mounting bracket 12 is attached to the instrument body 1 at each of the bent portions 3.3. 13. 13 are fitted together.

In particular, if the overall length of the mounting bracket 12 is made to be approximately the same as the width of the instrument main body 1, the side plates 1b and lb will deform a little inward due to the fitting of the bent portions and press the head 9 of the bushing 8 slightly. In addition, the adhesion of the bushing 8 to the instrument body 1 is improved.

Reference numeral 14 denotes a reflector plate, which is attached to the opening of the instrument main body 1 using the mounting fittings 12.

In this way, the bushings 8 are interposed between the side plates 1b, lb of the device main body 1 and the side plates (wall surfaces) 5b, 5b of the ballast 4 so as to be in contact with each other. Due to the leakage magnetic flux from 4, the side plate parts 1b, lb
Even if the bushing 8 vibrates, it is absorbed by the bushing 8, and the noise can be greatly reduced.

In this regard, according to experiments conducted by the inventors of the present invention, when rubber bushings were arranged at four locations as shown in the figure, the noise level was 25 horns.

On the other hand, the noise of the conventional product without any rubber bushing was 35 horns.

In particular, in this product, the head of the rubber bushing is arranged as shown by the dotted line in FIG.
Reducing the contact area to lb further reduced the noise.

Furthermore, since the leg portion 11 of the bushing 8 is formed with a locking portion 10 that is slightly larger than the hole 7 of the stabilizer 4, the locking portion 10 of the bushing 8 is simply positioned in the hole 7 of the stabilizer 4. It can be easily locked by simply pressing.

Therefore, the bushing 8 can be efficiently attached to the ballast 4 prior to attaching the ballast 4 to the instrument body 1.

In particular, the side plate portion 1b of the instrument body 1 by the mounting bracket 12,
By slightly deforming lb inward, the contact between the head end surface 9a of the bushing 8 and the side plate portions 1b and lb can be improved, and noise can be further reduced.

In the present invention, the bushing can be inserted and locked into the side plate portion of the device body, and the bushing can be inserted and locked into the device body or stabilizer by using notches, claws, etc. in addition to the illustrated holes.

As described above, according to the present invention, noise caused by leakage magnetic flux can be effectively reduced even if the facing distance between the side plate portion of the device main body and the ballast is narrowed.

[Brief explanation of the drawing]

Figure 1 is a side sectional view showing one embodiment of the present invention, and Figure 2 is a side sectional view showing one embodiment of the present invention.
FIG. 3 is a sectional view taken along line II in FIG. 2, FIG. 4 is an exploded perspective view. In the figure, 1 is the instrument body, 1b is the side plate, 4 is the stabilizer, 5b
7 is a wall surface (side plate portion), 7 is a hole, and 8 is a bushing.

Claims (1)

[Scope of utility model registration request] In a device in which a stabilizer is housed and fixed in a device main body having a U-shaped cross section, an elastic bushing is interposed between a wall end of the stabilizer and a side plate of the device main body opposite to this wall end. A lighting device characterized in that a bushing is inserted and locked into a hole formed in a wall of a ballast or a side plate of a device main body.