JP2594186Y2 - Equipment with electrical appliances - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device provided with an electric appliance such as a lighting device such as a discharge lamp lighting device.

[0002]

2. Description of the Related Art A typical prior art is shown in FIG. The casing 1 is connected to a duct 2 serving as a power distribution track having a substantially C-shaped cross section perpendicular to the axis, and is connected to a lamp 4 including a lamp via a suspension member 3.

FIG. 5 is an exploded perspective view of the casing 1. The casing 1 has a casing body 5 and a lid 6,
The wiring board 7 is housed in the casing body 5. The wiring board 7 is disposed horizontally near the lid 6, and the input lead wires 8
Connected to the electric wire in the duct 2. The output lead wire 9 connected to the wiring board 7 passes through the inside of the suspension member 3 and is connected to the lamp 4. The electronic circuit component 10 is mounted on the wiring board 7. The wiring board 7 is arranged horizontally. A plug 11 is formed on the lid 6 as a locking piece.
The lid 6 can be locked. The screw 12 penetrates the lid 6 and the wiring board 7, and is screwed and fixed to the boss 13 of the casing body 5. Vent holes 14 are formed in the side wall and the bottom of the casing body 5.

FIG. 6 is a cross-sectional view of the prior art shown in FIGS. Duct 2 is fixed to ceiling 15. Air flows through the vent hole 14 as indicated by reference numeral 16.

[0005]

[Problems to be Solved by the Invention] FIGS.
In the prior art shown in FIG. 1, since the wiring board 7 is disposed on the upper part of the casing main body 5, a smooth air flow from the bottom to the upper part through the ventilation hole 14 is not achieved,
Only the heat trapped inside flows out of the vent hole 14 in a so-called overflow state, as indicated by reference numeral 16 in FIG. Therefore, a sufficient heat radiation effect cannot be achieved.

Therefore, in the prior art, in order to sufficiently achieve the heat radiation effect of the electronic circuit component 10, for example, it is necessary to attach a large heat radiation fin 18 to the transistor 17 as one of the electronic circuit components. Become Therefore, the casing main body 5 becomes large.

[0007] An object of the present invention is to provide an apparatus provided with an electric appliance capable of improving the heat radiation effect and reducing the size.

[0008]

According to the present invention, a ceiling 2 of a building is provided.
1, a distribution track 22 having a substantially C-shaped cross section perpendicular to the axis and having an opening end 35 opened downward, and an electric appliance 23. It is fitted and fixed to the opening end 35, and a ventilation hole 33 communicating with the space 34 in the power distribution track is formed in the upper part, and a casing 26 in which the ventilation hole 32 is also formed in the lower part, and housed in the casing 26. , A vertically arranged wiring board 38
And electronic circuit components 39 and 40 mounted on the wiring board 38.
And the electric equipment 23 flowing from the air hole 32 formed in the lower part of the casing to the electronic circuit components 39 and 40 through the air hole 33 formed in the upper part of the casing into the power distribution track 22. A device provided with an electric appliance characterized by including.

[0009]

According to the present invention, the wiring board housed in the casing is arranged vertically, and the electronic circuit components are mounted on the wiring board. It comes into contact with the electronic circuit component mounted on the wiring board, and is guided into the power distribution track from the ventilation hole formed in the upper part of the casing. In this way, the heat radiation effect of the electronic circuit components is sufficiently achieved, so that it is not necessary to increase the size of the heat radiation fins and the like, and the size can be reduced. Further, in the present invention, the casing 26 is fitted and fixed to the opening end 35 of the power distribution track by the locking piece 42 provided on the upper portion of the casing 26, so that the mounting is easy and the wiring track is provided. There is no danger that the ventilation hole 33 communicating with the space 34 will be closed, and air from the ventilation hole 32 at the lower part of the casing 26 will be
And the cooling effect is enhanced.

[0010]

1 is a sectional view taken at right angles to the axis of an embodiment of the present invention, and FIG. 2 is a simplified exploded perspective view of a part thereof. On the ceiling 21 of the room of the building, a power distribution track 22 having a substantially C-shaped cross section perpendicular to the axis and open downward is fixed, and a lighting fixture 23 is fixed to the power distribution track. . The lighting fixture 23 includes a casing 26 including a casing body 24 and a lid 25, a suspending member 27 extending downward from a lower portion of the casing body 24, and a suspending member 2.
And a lamp 28 attached to the lamp 7. The lamp 28 includes a lamp 29 such as a discharge lamp. Casing body 24
Vent 3 over the bottom 30 of the
2 are formed at intervals in the longitudinal direction (the left-right direction in FIG. 2). A ventilation hole 33 is formed in the lid 25, and the ventilation hole 3 is formed.
3 is connected to a space 34 inside the distribution track 22 through an open end 35. The cover 25 is fixed by screwing a screw 36 to a boss 37 of the casing body 24.

The wiring board 38 is housed in the casing body 24 and is arranged vertically. Electronic circuit components such as a transistor 39 and a capacitor 40 are mounted on the wiring board 38. A radiation fin 41 having a relatively small size and shape is attached to the transistor 39. A locking piece 42 is provided on the upper portion of the lid 25, and the locking piece 42 can be fitted into the opening end 35 of the power distribution track 22 and locked to the inward flange 43. In this operation, the lid 25 and thus the casing 26 are fitted so that the longitudinal direction of the locking piece 42 is along the longitudinal direction of the opening end 35, and the locking piece 42 is fitted to the opening end 35. 9 around the vertical axis
The above-mentioned locked state is achieved by the angular displacement of 0 degrees. The locking piece 42 also functions as an electronic plug, and the commercial power from the line in the power distribution track 22 is supplied to the wiring board 38 via the input lead wire 44, and the output power is transmitted from the output lead wire 45 to the lamp 29. Given. The output lead wire 45 passes through the suspension member 27.

FIG. 3 is a simplified cross-sectional view of a portion of the casing body 24 of the embodiment shown in FIGS. 1 and 2 along the longitudinal direction. The ventilation holes 32 formed on the casing body 24 side introduce air into the casing body 24 as indicated by an arrow 46, whereby the transistor 39 and the capacitor mounted on the wiring board 38 arranged vertically are provided. Further, the air is brought into contact with the radiating fins 41 and the temperature rise is suppressed. The air in the casing body 24 flows from the ventilation hole 33 of the lid 25 to the space 34 of the power distribution track 22.
Flows in In this way, the air smoothly flows through the ventilation holes 32 formed in the lower part of the casing main body 24 and the ventilation holes 33 of the lid 25, so that a sufficient heat radiation effect can be achieved. Thereby, the radiation fin 4 of the transistor 39 is formed.
1 can be miniaturized, so that the casing 26
Can be miniaturized.

The present invention can be widely implemented in connection with not only lighting fixtures but also other electrical appliances.

[0014]

As described above, according to the present invention, a wiring board is vertically arranged on a casing, electronic circuit components are mounted on the wiring board, and air flows through a vent formed in a lower portion of the casing. The air inside the casing comes into contact with the electronic circuit components, and the air in the casing flows from the ventilation hole formed in the upper portion of the casing to the power distribution track, and thus the air flows smoothly. This will be fully achieved. Therefore, it is not necessary to increase the size of the radiation fins or the like, or the radiation fins are not required, and thus the configuration of the casing, that is, the configuration of the electric appliance can be reduced. In particular, in the present invention, air can flow smoothly from the lower air hole 32 of the casing 26 to the space 34 in the power distribution track from the upper air hole 33 through the space in the casing 26 to the space 34 in the power distribution track. Further, in the present invention, the locking piece 42 is provided on the upper portion of the casing 26, and the locking piece 42 is fitted into the opening end 35 of the distribution rail groove to fix the casing 26. 26 is easy to install, and the ventilation holes 33 in the upper part of the casing 26 are provided.
However, it is possible to reliably communicate with the space 34 in the power distribution track and to guide air for cooling.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view at right angles to an axis of an embodiment of the present invention.

FIG. 2 is a simplified exploded perspective view of the lighting fixture 23 shown in FIG.

FIG. 3 is a simplified cross-sectional view of a portion along a longitudinal direction of a casing main body 24 of the embodiment shown in FIGS. 1 and 2;

FIG. 4 is a perspective view of the prior art.

FIG. 5 is an exploded perspective view of the prior art shown in FIG.

FIG. 6 is a cross-sectional view of the prior art shown in FIGS. 4 and 5 taken at right angles to the axis;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Ceiling 22 Power distribution track 23 Lighting fixture 24 Casing main body 25 Lid 26 Casing 27 Hanging member 28 Lamp 32,33 Vent hole 38 Wiring board 39 Transistor 40 Capacitor 41 Radiation fin 42 Locking piece

Claims (1)

(57) [Scope of request for utility model registration] 1. A distribution track 22 fixed to a ceiling 21 of a building, having a substantially C-shaped cross section perpendicular to an axis and having an open end 35 opened downward, and an electric appliance 23, the upper part of which is an electric appliance. A casing in which an engagement hole 42 is fitted and fixed to the opening end 35 of the power distribution track, a ventilation hole 33 communicating with a space 34 in the power distribution track is formed at an upper portion thereof, and a ventilation hole 32 is also formed at a lower portion. 26, and the wiring board 3 housed in the casing 26 and arranged vertically.
8 and electronic circuit components 39 and 40 mounted on the wiring board 38. Air from the ventilation holes 32 formed in the lower portion of the casing contacts the electronic circuit components 39 and 40 and is formed in the upper portion of the casing. And an electric appliance 23 flowing from the ventilation hole 33 into the power distribution track 22.