JPH0130722Y2 - - Google Patents

Description

[Detailed explanation of the idea] 〔Technical field〕 The present invention relates to a recessed lighting fixture.

[Background technology]

As awareness of energy conservation increases, there is an increasing number of cases, especially in cold regions, where insulation is installed under ceilings to improve efficiency during winter heating. Among various insulation methods, the blowing method, in which small pieces of insulation material are blown in, can be applied to every nook and cranny. The fixtures are also covered with insulating material, and if the light source is an incandescent lamp or other type of light that generates a lot of heat, the temperature of the lighting fixture made of sheet metal such as steel plate covered with the insulating material will rise abnormally, making it impossible to use it in that state for a long time. In the worst case scenario, the construction materials in contact with the outer surface of the sheet metal lighting fixture body could become carbonized, leading to low-temperature ignition and other safety hazards.

[Purpose of invention]

The object of the present invention is to provide a safe recessed lighting fixture that does not cause the temperature of the outside surface of the lighting fixture to rise abnormally even if it is covered with a heat insulating material during attic insulation construction.

[Disclosure of invention]

The present invention prevents abnormal temperature rises on the outer surface of the lighting equipment body by blocking heat from the light source in recessed lighting equipment such as downlights.
Description will be given based on the embodiment shown in the drawings and FIG.

The lighting fixture body 1 is formed into a cylindrical shape with a closed top and an open bottom with an outer flange at the bottom end, and a plurality of mounting holes 2 through which mounting screws are inserted are provided on the side surface, and the lighting fixtures are embedded in mounting holes provided on the ceiling surface. It is attached with the outer flange touching the ceiling surface. A socket 3 is attached to the approximate center of the inner surface of the upper surface of the lighting fixture main body 1, and an incandescent light bulb 4 is attached thereto as a light source lamp.
The reflector plate 5 is formed of a thin aluminum plate so as to cover the incandescent light bulb 4, and has a reflective surface on its inner surface and an outer flange at its lower end. The reflector mounting frame 6 is formed into an annular shape with a U-shaped cross section, and frame mounting springs 7 are attached to two centrally symmetrical locations. The reflective plate 5 is placed with the outer flange in contact with the surface. The outer reflector 8 is made of aluminum and has an inner reflective surface that reflects the radiant heat from the reflector 5. The outer reflector 8 is placed on the reflector mounting frame 6 together with the reflector 5, and the outer reflector 8 is attached to the reflector 5 in a non-contact manner except for the lower end. An air layer at least three times the thickness of the reflector is provided between the reflector and the reflector to form a heat insulating layer that prevents heat conduction.

This embedded lighting fixture has an open bottom surface, but after the lighting fixture body 1 is installed by inserting the mounting screw into the mounting hole 2, the inside and outside sides of the lighting fixture body 1 are separated by the ceiling surface. In addition, since the reflector plate 5 and the outer reflector plate 8 are in contact only at their lower ends and an air layer is provided between them, the outer surface temperature of the lighting fixture body 1 can be kept low, and the lighting fixture body 1 can be installed under attic insulation construction. Even if it is sometimes covered with insulation material, the lighting equipment body 1
There is no abnormal temperature rise on the outside surface, so there is no risk of carbonization of construction materials, and even if the insulation material is installed using the blowing method, no insulation material will enter the lighting equipment, and no dust will enter the reflector 5 and the outside. It is in contact with the reflector plate 8 only at the lower end, so there is little heat conduction.

It should be noted that if the reflecting plate 5 and the outer reflecting plate 8 are connected and fixed at their lower ends as shown in FIG. 3, handling is easy and the distance between them can be maintained reliably.

[Effect of idea]

According to the present invention, since the reflector is covered and the outer reflector is provided inside the lighting fixture body, it is possible to reduce the heat generated by the light source lamp and transmitted to the lighting fixture body via the reflector. Even if the lighting fixture body is covered with a heat insulating material during construction, the outside temperature of the lighting fixture body will not rise abnormally, and there is no risk of carbonization of construction materials in contact with the lighting fixture body.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the present invention, with FIG. 1 being a sectional view and FIG. 2 being an exploded perspective view. FIG. 3 is a sectional view of a main part of another embodiment of the present invention. 1...Lighting device body, 2...Mounting hole, 3...Socket, 4...Incandescent light bulb, 5...Reflector, 6...
Reflector mounting frame, 7... Frame mounting spring, 8... Outer reflector.

Claims (1)

[Scope of utility model registration request] In recessed lighting equipment, in which the lighting equipment body with a socket for attaching the lamp is installed embedded in the ceiling surface, a reflector plate is provided inside the lighting equipment body to cover the lamp and control light distribution, and the radiant heat from the reflector plate is installed. 1. A recessed lighting fixture, characterized in that an outer reflecting plate that reflects light and forms an insulating air layer on the outer surface of the reflecting plate is provided inside the lighting fixture body, covering the reflecting plate.