JPS5841613Y2 - lighting equipment - Google Patents

Description

[Detailed description of the invention] This invention relates to lighting equipment, and its purpose is to provide a reflector structure that can efficiently irradiate light from a lamp to the outside of the equipment, lower the equipment temperature, and improve efficiency. There is something to do.

FIG. 1 shows a conventional example, in which a main body 1 is a cylindrical body with a bottom and is embedded in a ceiling 2.

Various electrical components 4 are attached to the bottom 3, and a disk-shaped reflector 5 is provided to cover the bottom of the bottom 3, and an annular lamp 6 is further provided below the bottom 3.

The reflector 5 and the inner surface of the main body 1 are painted white, and the lamp 6
The downward light is reflected immediately, and the upward and outward light is reflected by the reflecting plate 5 and the surface of the main body 1 and is irradiated to the outside of the instrument.

However, the reflector 5 and the main body 1 cause diffused reflection, resulting in poor efficiency of the device and variations in illuminance, which is inconvenient.

The present invention has been made in view of the above points, and will be explained below based on the drawings.

2 and 3 show an embodiment of the present invention, in which a bottomed cylindrical main body 7 is embedded in a ceiling 8, and an electrical component 1 is mounted on the bottom 9 of the main body 7.
0 is attached, and a reflecting plate 11 is provided below it, covering an annular lamp 12.

The reflector 11 is made up of a reflector portion 13 and a reflector portion 14, and the reflector portion 13 has a mirror reflection of a parabolic cross section with the lamp 12 as the focal point and the axial direction inclined with respect to the central axis of the lamp 12, that is, the direction directly below. The reflector portion 14 is a mirror reflector having a substantially truncated cone shape, and both reflector portions 13 and 14 are assembled with a gap 15 provided above the lamp 12.
A hole 16 is provided in the bottom 9 of the main body 7 corresponding to this gap 15.

The light from the lamp 12 can effectively illuminate, for example, a floor surface with direct light, light radiated outward by the reflector portion 14, and light reflected downward by the reflector portion 13.

A light distribution curve showing this state is shown in FIG.

Also, the surrounding air warmed by the heat generated by the lamp 12 is guided by the reflector parts 13 and 14 to the upper gap 15, and escapes upward through the hole 16 of the main body 7 and the lamp 12.
is cooled.

Next, FIG. 4 shows another embodiment of the present invention, in which a disk-shaped flat reflector portion 17 is used in place of the reflector portion 14 in the embodiment shown in FIG. Annular lamp 1
A substantially hollow truncated conical auxiliary reflecting plate 18 with a small diameter on the lower side is provided inside the reflector 2.

(Other parts are given the same numbers as in Figure 2) The flat reflector part 17 and the reflector part 13 are assembled with a gap 15 provided above the lamp 12, and the auxiliary reflector 18 is a specular reflector with a large diameter at the top. The side radius is smaller than the lamp inner diameter by the lamp diameter, the height is about 1.5 times the tube diameter, and the conical slope is about 60° to 70'.

The annular inward light of the lamp 12 is reflected by this auxiliary reflector 18 to the outside of the instrument.

The air heated by the heat generated by the lamp 12 is guided into the gap 15 between the reflector portion 13 and the flat reflector portion 17 by the entra effect of the auxiliary reflector 18, and escapes from above to the upper side of the main body.

As described above, in the present invention, the light from the lamp is efficiently irradiated to the outside of the fixture, improving the efficiency of the fixture and making the illuminance of the irradiated surface, such as the floor surface, uniform.

Heat can also be efficiently dissipated to the outside of the appliance.

Each reflector portion can be manufactured separately and assembled individually, making the work easier.

[Brief explanation of the drawing]

FIG. 1 is a sectional front view showing a conventional example. FIGS. 2 and 3 show an embodiment of the present invention, with FIG. 2 being a sectional front view and FIG. 3 being a light distribution curve of the device. FIG. 4 is a sectional front view showing another embodiment of the present invention.

Claims (1)

[Scope of utility model registration request] In a lighting device having an annular lamp inside a cylindrical body with an open bottom and a reflector covering the lamp, the reflector covers the outside of the lamp and reflects light to the side; A lighting fixture comprising a reflector part that covers the inside and reflects light at the bottom, and is characterized in that both reflector parts are adjacent to each other with a gap above the lamp.