JPS6258507A - Buried down light for heat insulating work - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an embedded downride for heat insulation construction suitable for being embedded in a ceiling surface subjected to heat insulation construction.

[Conventional technology]

BACKGROUND ART Recently, insulation wires have been installed in ceilings mainly in general houses for the purpose of energy saving (reducing heating and cooling loads) and sound insulation. It may also be necessary to use recessed downlights in the ceiling where the insulation is applied. However.

If you embed a downlight for a general incandescent lamp in the ceiling and cover the fixture with insulation material, the heat dissipation of the fixture will be poor and the life of the fixture will be shortened.

There is a risk of fire.

In other words, the external temperature of the equipment adjacent to the construction materials is 90°C.
As a result of the above, there is a risk of the construction materials catching fire over time, and the temperature of the lamp cap exceeds 170°C, which is stipulated by electrical appliances, so the glass pulp of the lamp and the cap must be fixed before the filament breaks. The adhesive may deteriorate and problems such as valve loosening may occur.

Furthermore, due to the poor heat dissipation of the appliance due to the insulation material, the temperature outside the appliance increases, and the heat transmitted from the wiring inside the appliance exceeds the heat resistance temperature of the power supply wire (generally VVF cable).
The insulation coating may melt and cause a power short circuit, which may lead to a fire.

[Problem that the invention seeks to solve]

For this reason, the heat insulating material and lighting equipment are generally separated when installing the equipment. However, this requires the insulation material to be cut in the required area at the location where the equipment is installed, which not only makes installation laborious, but also lacks reliability as there is a risk that the equipment and insulation material may come close to each other after installation. It is something.

Therefore, in order to prevent the above-mentioned problem from occurring even if the appliance is covered with a heat insulating material, for example, a heat plate is placed above the appliance body to cut off the heat from the lamp, or Products have been developed that cover the surface with a reflective plate.

However, with these heat countermeasures, although a certain degree of temperature reduction is observed, they still lack safety.

The present invention has been made in consideration of the above circumstances.

When used by being buried in an insulated ceiling, it lowers the external temperature of the appliance and prevents the temperature of the top plate, which has the highest external surface temperature, from rising too high, allowing the appliance to fully demonstrate its performance. The purpose of the present invention is to provide a recessed downlight for insulation construction that is also highly safe.

[Means to solve the problem]

In the present invention, the socket is disposed on one side of a cylindrical device body having a light projection opening on the lower surface at an angle with respect to the vertical axis of the device body, and the socket is arranged at an angle with respect to the vertical axis of the device body. A reflector made of aluminum and having a reflective surface as a mirror surface is disposed so as to optically oppose the lamp mounted in the socket.

The device is characterized in that a heat insulating means is provided between the top plate portion of the device body and the reflector when the internal pressure of the device body is maintained.

[Effect]

The heat generated from the lamp when the lamp is lit is the rung input (W).
Approximately 80% of the energy generated by the lamp becomes radiant energy, causing a rise in the temperature of each part of the appliance. However, by arranging the socket at an angle to the vertical axis of the appliance body (biased to the - side), the radiant heat of the lamp is reduced. In addition, since the lamp is optically opposed to a reflector with a mirror-like reflective surface, most of the heat from the lamp is dissipated by the aluminum and reflected by the reflective surface. The heat emitted outward from the light aperture and conducted from the reflector, socket, etc. creates a temperature gradient by the heat insulating means, thereby suppressing the temperature rise outside, especially at the top plate, and improving safety.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1st
Figures 1 and 2 show a first embodiment of the invention. Reference numeral 1 denotes a device main body, which has a top plate portion 2 on its upper surface and a light emitting opening 3 on its lower surface, is formed into a cylindrical shape, and is buried in a ceiling surface A. In this embodiment, the appliance main body 1 is formed of a cylindrical base part 4 with an open top and bottom, and a lid part 5 that covers the top opening of the base part 4 to form a top plate part 2. For installation drilled in A, fit into hole 6 and attach to ceiling surface A.
will be buried in Reference numeral 7 denotes a socket, and the socket 7 may be made of porcelain, for example, and formed in a cylindrical shape with a lamp base insertion opening 8 at one end, and a holder (not shown) disposed inside. . This socket 7 is connected to the instrument body 1
It is placed at an angle to the vertical axis of the instrument body, with it biased towards one side of the instrument body.

In this embodiment, the socket 7 is mounted on a socket mounting body 10 provided on a heat insulating means 9, which will be described later, with the base insertion l:'+8 facing diagonally downward. Reference numeral 11 denotes a lamp attached to the socket 7. The lamp 1] is, for example, an incandescent light bulb, and is installed in the socket 7, which is disposed diagonally downward, so that it is not disposed diagonally downward. Reference numeral 12 denotes a reflector, and this reflector 12 is connected to the opening 1 facing the light projection opening 3 of the instrument main body 1.
3, and is made of aluminum with a reflective surface 14 as a mirror surface, and is disposed in the instrument body 1 so as to optically oppose the lamp 11. The reflector 12 has a socket insertion hole 15 on the side surface of the instrument body 1.
The device is mounted on a frame 16 that covers the periphery of the light projection opening 3.

Although not shown, the frame 6 can be detachably attached to the instrument main body 1 by means of a V-shaped spring or the like. Thus, the heat insulating means 9 is provided between the top plate portion 2 and the reflector 12 within the appliance body 1.

In this embodiment, the heat insulating means 9 is formed of heat shielding plates 9a, and a plurality of, for example, three heat shielding plates 9a are formed 11. screw 1
8j'l: Therefore, it is attached to the top plate part 2. The heat plate 9a is made of a galvanized steel plate and is formed into a disk shape. 19 is a terminal device, and this terminal device [19 can be provided on the outer surface of the top plate portion 2 diagonally with the socket 7. A power line 20 and an electric wire 21 connected to the socket 7 are connected to this terminal device]9. The electric wire 21 connecting the socket 7 and the terminal device 19 can be connected by being inserted through the electric wire insertion hole 22 provided on the edge or the hot plate 9a. Reference numeral 23 denotes a heat insulating material disposed on the ceiling surface A. This insulating material 23 is formed into a mat shape of, for example, glass wool, rock wool, urethane foam, etc., and is disposed so as to cover the appliance body l.

Next, the operation of this embodiment will be explained. lamp 11
When the lamp 11 is turned on, the heat generated from the lamp 11 causes the temperature of each part of the appliance to rise.

The reflector 12 is made of aluminum, and the reflective surface 14
Since it has a mirror surface, radiant heat is emitted outward from the light projection aperture 3. Also, 0 reflector 12. The conductive heat from the socket 7 and the like is provided with a temperature gradient by the heat insulating means 9 consisting of heat insulating plates 9a arranged apart from each other, and a temperature rise on the outside of the appliance body 1, especially on the top plate 2, is effectively prevented. Even if the appliance is covered with the heat insulating material 23, the top plate 2. There was no excessive temperature rise on the outer surface of the appliance body 1, the contact area with construction materials, etc., and there was no risk of fire or the like, and high safety was confirmed.

FIG. 3 is a longitudinal section showing a second embodiment of the invention. Note that the same parts in FIG. 1 as in FIGS. 1 and 2 are designated by the same reference numerals, and their explanations will be omitted. That is, in this embodiment, the structure of the heat insulating means 9 is changed, and a mat-like heat insulating material 9b such as glass wool, rock wool, or urethane foam is used as the heat insulating means 9.

In this embodiment as well, the heat insulating material 9bK can effectively suppress the temperature rise on the outside of the appliance main body 1, particularly on the top plate portion 2. Moreover, in this embodiment, compared to one formed by a plurality of heat shield plates.

It is possible to reduce the weight and facilitate manufacturing.

Although the present invention has been described with reference to specific embodiments, the present invention is not limited thereto. For example, the socket may be arranged laterally or diagonally upward. Even in this case, the socket needs to be located on one side of the instrument body.

〔Effect of the invention〕

As detailed above, according to the present invention, the influence of the radiant heat of the lamp is reduced by arranging the socket to one side within the appliance body at an angle to the vertical axis of the appliance body, Moreover, the heat generated from the lamp is radiated outward by the reflector, and the heat insulating means can effectively prevent the temperature from rising outside the appliance, especially at the top plate, and the performance of the appliance can be improved by using an insulated ceiling. can be fully utilized and improve safety.

[Brief explanation of drawings]

1 and 2 show a first embodiment of the present invention, FIG. 1 is a longitudinal cross-sectional view, FIG. 2 is a bottom view with the frame and reflector removed, and FIG. 3 is a view of the present invention. FIG. 2 is a vertical cross-sectional view showing a second embodiment of the invention. l... Appliance body, 2... Top plate part. 3... Light emitting aperture, 7... Opening socket. 11...Lamp, 12...Reflector. 13...Aperture of reflector, 14. Curved/reflective surface. 9...Insulation means e 9a.Bending/Insulation means 9b...Insulation source board as heat insulation means. insulation material

Claims (1)

[Claims] (1) A cylindrical appliance body that has a top plate on the top surface, a light projection opening on the bottom surface, and is buried in a heat-insulated ceiling surface; A socket disposed biased to one side in the main body of the device, a lamp attached to the socket, and an aperture formed of aluminum with a reflective surface as a mirror surface and having an opening opposite to the light emitting opening on the lower surface. A reflector disposed within the apparatus main body to optically face the lamp; and a heat insulating means provided between the top plate and the reflector within the apparatus main body. Recessed downlight for insulation construction.