JPS6323844Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a lighting fixture with a rectangular body using a plurality of round fluorescent lamps.

Conventionally, as shown in FIG. 1, in a lighting fixture in which a plurality of round fluorescent lamps are provided in a square main body, the round fluorescent lamp 1 has a base 1a inside a square lighting main body 2. The lights were placed facing each other, all directed towards the center of the lighting fixture body 2, or two lights each facing 180 degrees to the outside of the fixture. However, when two lamps are placed facing each other, the two opposing lamp caps 1a influence each other, resulting in a large temperature rise inside the lighting fixture body 2, causing the lighting equipment including the round fluorescent lamp 1 to In addition, as shown by diagonal lines in the figure, by using the round fluorescent lamp 1 in the rectangular lighting device body 2, not only the corners of the rectangular shape inevitably become dark, but also the base 1
The parts facing each other are darkened, and the uniformity of brightness on the globe surface of the lighting fixture is impaired.If all caps 1a are directed toward the center of the lighting fixture body 2, the temperature of the lighting fixture will similarly increase due to the temperature rise. In addition to having a negative impact on the lifespan, the center of the lighting fixture becomes dark and the uniformity of the brightness on the globe surface is impaired.
When facing 180 degrees to the outside of the lighting fixture,
Although it is advantageous in terms of temperature, it has the disadvantage that the outer edge of the lighting fixture that the base 1a faces also becomes dark, and the uniformity of brightness on the globe surface is impaired. Since there is no distance from the shaped fluorescent lamp and a strong lamp image appears, the uniformity of the brightness on the globe surface becomes worse and there is also an adverse effect on temperature, making it difficult to achieve a thinner shape.
Note that the shaded areas in the figure indicate dark areas of the lighting equipment.

The present invention was made in view of the above circumstances, and it suppresses the influence of the temperature of the lighting equipment and does not impair the uniformity of brightness on the surface of the globe.
This is an attempt to make lighting equipment thinner.

The present invention will be explained below based on the embodiment shown in FIGS. 2 and 3. The four round fluorescent lamps 1 have a lighting fixture main body 2 having a square planar outline.
The lighting fixture body 2 is divided into four equal squares virtually by two fixture center lines that pass through the center and divide the lighting fixture body 2 into a substantially symmetrical shape. and is installed in the lighting equipment main body 2 so that the cap 1a faces the intersection of one equipment center line and the outer line, which is the apex of each unit lamp facing outside the equipment. ing.
When the round fluorescent lamp 1 is used in a square lighting fixture body, the distance from the round fluorescent lamp 1 that is the light source is long 4
Although the corners inevitably become dark, in the embodiment shown in FIG. When it becomes dark, the base 1a faces the intersection of the center line of the lighting fixture body and the outer shape, which should originally be dark, so the base 1a does not create a new dark area and impair the uniformity of brightness on the surface of the globe 3. By separating the cap 1a, which is a high-temperature part, from electrical parts such as starters and switches, which are often installed in the center of the lighting equipment body 2, it is possible to reduce the adverse effects of the temperature inside the lighting equipment on the electrical parts. , Also, the side of the glove 3 and the base 1a
The distance from the base 1a to the globe 3 can be increased, the shadow of the base 1a on the globe 3 and the influence of temperature on the globe 3 can be reduced, and the lighting equipment can be made thinner.

In addition, in another embodiment of the present invention shown in FIG. 4, the bases 1a of each round fluorescent lamp 1 are all facing different points, and when a plurality of bases 1a are facing the same point, In comparison, that part is less likely to get dark. Further, the outer shape of the lighting fixture is not limited to only a quadrangle, but may also be a hexagon as shown in FIG. 5. Furthermore, the cap may be arranged not symmetrically but directed toward any apex.

As described above, according to the present invention, in a multi-light lighting fixture in which a plurality of round fluorescent lamps are arranged so as to form substantially one plane with each other and are integrally covered with a square globe, the illumination light passes through the center of the lighting fixture. A round fluorescent lamp is arranged approximately at the center of each unit lamp, which is formed by virtually dividing a plurality of appliances into a rectangular shape along the center line of a plurality of appliances that divide the appliance into approximately symmetrical shapes. The bases of the lamps are directed toward the vertices of each of the rectangular unit lamps facing outside the fixture, and the bases do not create new shadows, and the brightness of the globe surface is highly uniform. The influence on each part can be reduced, and the lighting equipment can be made thinner.

[Brief explanation of the drawing]

Fig. 1 is a plan layout showing a conventional example of the present invention, in which A shows the case where two lamps are placed facing each other, B shows when all the lamps are directed toward the center of the lighting equipment body, and C shows the case where two lamps are placed in pairs. This is the case when it is oriented 180 degrees to the outside of the device. FIGS. 2 and 3 show an embodiment of the present invention, with FIG. 2 being a plan layout view and FIG. 3 being a sectional side view. FIG. 4 is a plan layout diagram showing another embodiment of the present invention. FIG. 5 is a plan layout diagram showing still another embodiment. 1...Round fluorescent lamp, 1a...Base, 2...Lighting device body, 3...Glove.

Claims (1)

[Scope of utility model registration request] In a multi-light luminaire in which a plurality of round fluorescent lamps are arranged so as to form approximately one plane with each other and are integrally covered with a square globe, a plurality of circular fluorescent lamps that pass through the center of the luminaire and divide the luminaire into approximately symmetrical shapes. A round fluorescent lamp is arranged approximately at the center of each unit lamp, which is virtually divided into squares along the center line of the fixture, and the base of the round fluorescent lamp is connected to each of the square unit lamps. A multi-light lighting device characterized by each light being directed toward the apex of the body facing outside the device.