JPH0524092Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a lighting fixture called a downlight that is embedded and installed in, for example, a ceiling.

[Conventional technology]

A typical prior art example is shown in FIG. This lighting fixture is an embedded lighting fixture called a downlight, and is installed so as to be embedded in, for example, a circular embedded hole 2 formed in a ceiling 1. A lamp socket 4 is attached to a fixture main body 3 fixed to a ceiling 1 by a structure not shown, and a through hole 5 corresponding to the lamp socket 4 is formed in the fixture main body 3. On the lower side of the instrument main body 3, a bowl-shaped reflecting plate 7 is provided with a through hole 5 at each end.
It is attached by a plurality of springs 8 fixed to the periphery of the. A through hole 9 corresponding to the through hole 5 is formed at the top of the reflector plate 7, and the through hole 9 and the through hole 5 on the side of the instrument body 3 are inserted through the through hole 9, for example.
A lamp 10 such as a HID lamp (high intensity discharge lamp) is attached to the lamp socket 4. A ballast 11 for supplying power to the lamp 10 is housed within the appliance body 3.

The reflector plate 7 is biased toward the device main body 3 by a spring 8, and this causes the frame 12 formed at the lower edge of the reflector plate 7 to be moved toward the ceiling around the periphery of the embedded hole 2.
It is made to adhere closely to the surface of the glass to improve its aesthetic appearance.

[The problem that the idea aims to solve]

In such a configuration, the position of the reflector plate 7 in the direction along the axis 7a is restricted to a position in close contact with the ceiling 1, but the through hole 9 and the lamp 10
Since a gap 13 is created between the lamp 10 and the neck of the lamp 10, the position in the direction (horizontal direction) intersecting the axis 7a cannot be reliably regulated, and as a result, the lamp 10
There is a possibility that a deviation may occur between the axis 10a of the reflector 7 and the axis 7a of the reflector 7. In this case, desired light distribution cannot be obtained, and therefore good illumination cannot be achieved.

Furthermore, in the configuration as described above, the lamp 1
0 is conducted into the instrument body 3 from the gap 13 through the through hole 5 of the instrument body 3, as indicated by reference numeral 11. As a result, the stabilizer 11 within the instrument body 3 may be heated and may not be able to operate properly.

The purpose of this invention is to provide a lighting fixture that solves the above-mentioned technical problems and makes it possible to obtain good lighting conditions.

[Means to solve the problem]

The lighting fixture of this invention includes a fixture body having a lamp socket facing from the back side into a hole embedded in the ceiling;
The top part, which has a through hole into which a lamp to be attached to the lamp socket is loosely fitted, is passed through the embedded hole and suspended from the device main body by a spring, and an outer part that is latched to the lower surface of the edge of the embedded hole. In the lighting device, the lighting device includes a reflecting plate in which a flange is formed on the circumferential surface of a lower opening, in which a fitting recess having the through hole is formed inside the top of the reflecting plate, and the fitting recess is formed so as to cover the through hole. A positioning gasket is fitted into the matching recess, and an insertion hole having a diameter approximately equal to the diameter of the neck of the lamp is formed on the axis of the reflecting plate in the gasket.

[Effect]

According to the configuration of this invention, when the neck of the lamp is inserted into the insertion hole of the gasket and the lamp is attached to the lamp socket, the diameter of the insertion hole is approximately equal to the diameter of the neck of the lamp, so the position of the gasket is aligned with the lamp. Therefore, it is regulated accurately. However, since the gasket is fitted into the fitting recess of the reflector, the reflector can be accurately positioned at a certain position relative to the lamp, and the light emitting center of the lamp can be positioned on the axis of the reflector. Become.

In this way, the positional relationship between the lamp and the reflector can be accurately set to the desired state, and as a result, the light from the lamp can be irradiated in the desired manner, and a good illumination state can be obtained. Become.

Furthermore, since the space on both sides of the gasket is separated by the gasket, heat from the lamp can be prevented from convection to the side of the appliance body where the lamp socket is fixed, and as a result, electrical components inside the appliance body can be prevented from becoming excessively hot. It is possible to prevent this from happening and ensure that the operation is performed well.

〔Example〕

FIG. 1 is a sectional view showing the basic structure of a lighting fixture according to an embodiment of this invention. In FIG. 1, parts corresponding to those shown in FIG. 2 described above are designated by the same reference numerals.

In this embodiment, the fitting recess 2 at the top of the reflector 7 is
3 and a gasket 20 is positioned and fitted. This packing 20 has an insertion hole 21 formed corresponding to the through hole 9 and having a diameter approximately equal to the diameter of the neck of the lamp 10. It is fixed to the top of the plate 7. The lamp 10 is inserted into the lamp socket 4 with its neck inserted through the insertion hole 21 of the packing 20.
can be attached to.

According to such a configuration, there is almost no gap between the lamp 10 and the gasket 20, so the gasket 20 is accurately positioned with respect to the lamp 10. As a result, the horizontal position of the lamp 10 and the reflection plate 7 to which the gasket 20 is fixed is accurately regulated. That is, the lamp 10 and the reflector 7 can share the axis 22. As a result, the light from the lamp 10 can be irradiated in a desired light distribution state, so that a good illumination state can be achieved.

Furthermore, the heat generated in the lamp 10 is guided upward as indicated by reference numeral 12, but due to the action of the gasket 20, the space above the gasket 20 is partitioned from the space below it. heat from the lamp 10 reaches the appliance body 3.
As a result, the instrument body 3
The temperature rise of the lamp socket 4 housed in the lamp socket 4 is suppressed, and the ballast 11 is prevented from becoming excessively high temperature, so that its operation can be performed well.

In the above-mentioned embodiments, a lighting fixture using a bowl-shaped reflector was explained as an example, but the shape of the reflector is not limited to this.

[Effect of idea]

As described above, according to the lighting device of this invention, since the reflector is accurately positioned at a certain position relative to the lamp, the light emitting center of the lamp can be positioned on the axis of the reflector, and the light from the lamp is It becomes possible to irradiate in a desired manner and obtain a good illumination state.

Furthermore, since the space on both sides of the gasket is separated by the gasket, heat from the lamp can be prevented from convection to the side of the appliance body where the lamp socket is fixed, thereby preventing excessive damage to the electrical components inside the appliance body. This has the effect of preventing high temperatures and allowing the device to function properly.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing the basic structure of a lighting fixture according to an embodiment of this invention, and FIG. 2 is a cross-sectional view showing the basic structure of a prior art. 3... Appliance body, 4... Lamp socket, 7...
... Reflection plate, 8 ... Spring, 9 ... Through hole, 10 ... Lamp, 20 ... Packaging, 21 ... Insertion hole, 23
...Fitting recess.

Claims (1)

[Scope of utility model registration request] A device body having a lamp socket facing a hole in the ceiling from the back side, and a top portion having a through hole into which a lamp attached to the lamp socket is loosely inserted are passed through the hole and suspended from the device body by a spring. In the lighting equipment, the reflective plate is provided with an outer flange formed on the circumferential surface of the lower opening to be held and to be engaged with the lower surface of the edge of the embedded hole, wherein the through hole is formed inside the top of the reflective plate. forming a fitting recess having
A lighting device in which a positioning gasket is fitted into the fitting recess so as to cover the through hole, and an insertion hole having a diameter approximately equal to the diameter of the neck of the lamp is formed on the axis of the reflector in the gasket. .