JPS6327367Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to an embedded downlight lighting fixture that is embedded in a ceiling surface.

[Background technology]

Traditionally, recessed downlight lighting fixtures include:
As shown in Fig. 1, a socket 2 is attached to the upper surface of a substantially cylindrical main body 1 having an outer flange at the lower end, a fixture 3 is protruded from the side surface of the main body 1, and is inserted into a mounting hole provided on the ceiling surface to attach the main body 1. A well-known method is to attach the ceiling material by sandwiching it between the outer flange and the fixture 3. However, when using such an embedded downlight lighting fixture in a cold region such as Hokkaido, if you spray insulating material after installing the fixture, water will leak from the heat radiation hole 4 to prevent the temperature inside the main body 1 from rising. Insulating material may get inside the main body 1 and accumulate inside, reducing lighting performance, causing the embedded downlight lighting equipment to become deformed due to abnormal temperature rise, or causing accidents such as fire, especially if the insulating material is made of flammable material. Therefore, as shown in Figure 2, a cover 5 was installed around the recessed downlight fixture with a space between it and the main body 1, and then a heat insulating material 6 was sprayed on. However, the work was time-consuming, construction workability was poor, and costs were rising.

[Purpose of invention]

The purpose of the present invention is to enable spraying of insulation material on embedded downlight lighting equipment without the need for special members.

[Disclosure of invention]

The recessed downlight luminaire according to the present invention is
A plate body having a large number of small-diameter engagement holes and an engagement protrusion that protrudes from one side and removably engages with the engagement holes is wound into a substantially cylindrical shape, and the overlapping ends of the plate are formed into engagement holes. A main body is formed by engaging an engaging protrusion with the main body, a top plate having a generally dish-like shape and equipped with a socket is removably fitted onto the upper end of the main body, and the frame is attached around a mounting hole provided on the mounting surface. This is an embedded downlight lighting fixture in which the lower end of the main body inserted into the mounting hole is placed on the body, and is characterized in that the diameter of the cylindrical main body is variable when the top plate is removed. .

According to this invention, heat dissipation is good and it is possible to perform spraying construction of heat insulating material without using special members.

Embodiment An embodiment of this invention will be explained based on FIGS. 3 to 6. The main body 1 is formed into a cylindrical shape by winding a plate having small diameter curled holes 7 protruding outward on its entire surface and fitting the curled holes 7 in the overlapping parts of the plates. By selecting the curl hole 7, the cylinder can be made to have an arbitrary diameter. At this time, the curled holes 7 that are fitted into each other at the overlapping portion of the main body 1 function on one side as an engagement hole and on the other as an engagement protrusion. The top plate 8 is formed into a substantially thin plate shape, and a socket 2 for mounting an incandescent light bulb 9 is attached to the approximate center of the inner surface, and a lead wire 10 is led out from the socket 2 to the top plate 8 surface. A body fixing hole 11 is provided in the side wall of the top plate 8, into which the curl hole 7 of the body 1 is fitted, and the body fixing hole 11 is fitted onto the body 1 to determine the outer diameter of the body 1 to a predetermined diameter. . The frame 12 is formed in the shape of a ring with an inner flange 14 having a through hole 13 in the center, and is fixed to the ceiling surface with screws 16 inserted into mounting holes 15 provided in the inner flange 14. The main body 1 having a fixed shape is supported by an inner flange 14. 17
is a panel placed on the inner flange of the frame 12 to diffuse light.

When using this embedded downlight lighting fixture at a site where insulation material is sprayed, as shown in Figure 5, after inserting the main body 1 into the mounting hole on the ceiling surface, adjust the diameter of the main body 1 to the ceiling. The diameter is made larger than the diameter of the main body 1 in the normal mounting state by making the curled holes 7 fit with each other by making the diameter larger than the mounting hole on the surface. and insulation material 6
When spraying is carried out, the heat insulating material 6 is piled up outside the main body 1 without penetrating into the main body 1 through the small diameter curl hole 7. After that, unfit the curl hole 7 of the main body 1, set the outer diameter of the main body 1 to the normal diameter again, fit the top plate 8 on the outside, and fix the frame 12 to the ceiling surface with the screws 16. , this recessed downlight luminaire is installed. Note that, of course, if spraying of the heat insulating material is not performed, it may be installed in the assembled state.

This embedded downlight lighting fixture has a small diameter curled hole 7 that protrudes outward on the entire surface of the main body 1, which has good heat dissipation and prevents dirt and dust from entering the main body 1. The strength of the main body 1 is unlikely to decrease even when the main body 1 is in a flat state, and the packaging can be made smaller.Even when spraying insulation material, the main body 1 can be easily packed without a special cover. The diameter can be changed to provide a gap between the main body 1 and the heat insulating material 6, and the use of a heat insulating material made of combustible material can also be accommodated.

[Effect of idea]

As described above, according to the present invention, heat dissipation is good, dirt and dust are not likely to enter, and it is possible to spray heat insulating material without using special members.

[Brief explanation of the drawing]

1 and 2 show a conventional example of the present invention, with FIG. 1 being a perspective view and FIG. 2 being a sectional view of the construction state. Figures 3 to 6 show an embodiment of the present invention, with Figure 3 being an exploded perspective view, Figure 4 being a sectional view of the main part of the main body, Figure 5 being a sectional view of the construction state, and Figure 6 being a sectional view of the main body. The figure is a sectional view of the installed state. 1...Body, 2...Socket, 5...Cover,
6... Insulation material, 7... Curl hole, 8... Top plate, 9
... Incandescent light bulb, 10 ... Lead wire, 11 ... Body fixing hole, 12 ... Frame, 13 ... Through hole, 14
...Inner tsuba, 15...Mounting hole, 16...Screw, 17
……panel.

Claims (1)

[Scope of utility model registration request] A plate body having a large number of small-diameter engagement holes and an engagement protrusion that protrudes from one side and removably engages with the engagement holes is wound into a substantially cylindrical shape, and the overlapping ends of the plate are formed into engagement holes. A main body is formed by engaging an engaging protrusion with the main body, a top plate having a generally dish-like shape and equipped with a socket is removably fitted onto the upper end of the main body, and the frame is attached around a mounting hole provided on the mounting surface. A recessed downlight lighting fixture in which the lower end of the main body inserted into the mounting hole is placed on the body,
A recessed downlight luminaire characterized in that the diameter of the cylindrical body is variable when the top plate is removed.