JPH1139932A - Lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting system which heightens heat releasing effect of a ballast without employing a heat releasing plate. SOLUTION: This system comprises a main body 21 having a flat part 21a to be attached to the ceiling face and a reflecting body 22 having a center flat part 22a to be attached to the down face of the flat part of the main body. In this case, sockets 23 for fluorescent lamps are arranged in the down face of the flat part of the main body. On the other hand, the peripheral part of the reflecting body 22 is extended downward to form space parts 33, 34 between the main body and the reflecting body 22 itself and comprises socket holes 26 to which sockets are projected. A ballast 24 is so placed as to directly touch at least respectively three points in the upper faces, outside faces, inside faces, and bottom faces of the main body and the reflecting body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device, and more particularly to a rectangular lighting device of a type directly mounted on a ceiling or partially embedded in a ceiling.

[0002]

2. Description of the Related Art As a rectangular lighting device of a type which is directly mounted on a ceiling or partially embedded in a ceiling, there is a lighting device as shown in FIG. 4, for example. A rectangular reflector 2 attached to the main body from below. The main body 1 has four sockets 3 along one side, and ballasts 2 for two lamps are respectively arranged along both sides orthogonal to this side. The main body 1 has three mounting holes 5 at its center, and
The body 1 is fixed to the ceiling by passing the lower ends of three or three stud bolts (not shown) through the mounting holes 5 and tightening them with nuts.

On the other hand, the reflector 2 has its periphery bulging downward,
The central flat surface 2a is in contact with the flat surface 1a of the main body 1. Two faces 2b facing each other are inclined to control light distribution, and two faces 2c facing each other are perpendicular to each other. A hole 6 corresponding to the size of the socket 3 of the main body 1 is provided in one of the vertical surfaces 2c, and a lamp holder 7 is disposed on the flat surface 2a on the vertical surface side facing the hole 6. The central flat surface 2a is provided with a square hole 5a at a location corresponding to the mounting hole 5 of the main body 1.

The reflector 2 has holes 8 provided at a plurality of locations.
Are fixed to the main body 1 by screwing using holes 9 of the main body 1 corresponding to these. After the reflector 2 is fixed to the main body 1, the compact fluorescent lamp 10 is mounted on the socket 3, and the tip of the fluorescent lamp 10 is locked to the lamp holder 7. After that, the baffle 11 is
1a is attached to the reflector 2 by engaging the engaging hole 11b of the reflector 2.

[0005]

In the conventional lighting device, the ballast 4 is arranged in a space 12 on the side parallel to the fluorescent lamp 10 as shown in FIG. A metal radiator plate 14 is arranged around the ballast 4, and is fixed to the main body 1 together with the ballast 4 by screws 13. The heat of the ballast 4 is radiated to the main body 1 and the reflector 2 via the heat radiating plate 14 so that a rise in the temperature of the ballast 4 is suppressed.

However, in such a conventional heat radiation method, a heat radiation plate bent in accordance with the shape of the ballast and the angle of the inclined surface must be separately prepared, which increases the cost and increases the cost of assembling the lighting device. The installation was troublesome.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an illuminating device which can enhance the heat radiating effect of a ballast without using a heat radiating plate.

[0008]

SUMMARY OF THE INVENTION A lighting device according to the present invention includes a main body having a flat portion mounted on a ceiling surface, and a reflector having a central flat portion mounted on a lower surface of the flat portion of the main body. A socket for a fluorescent lamp is arranged on the lower surface of the flat portion, while a peripheral portion of the reflector bulges downward to form a space between itself and the main body and has a socket hole from which the socket projects, In the space, the ballast has at least three of its top, outer, inner and bottom surfaces.
It is characterized by being arranged so as to be in direct contact with the main body and the reflector at some places.

A ballast is disposed in the space at the tip side of the fluorescent lamp, and at least an upper surface and an outer surface of the ballast are in direct contact with the main body, and a bottom surface of the ballast is in direct contact with the reflector. It is characterized by having been done.

[0010] Further, the ballast is disposed in the space on the side of the fluorescent lamp, so that at least the upper and outer surfaces of the ballast are in direct contact with the main body, and the bottom surface of the ballast is in direct contact with the reflector. It is characterized by being arranged.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a lighting device according to the present invention includes a metal square body 21 and a metal square reflector 22 mounted on the body from below. On the lower surface of the main body 21, four sockets 23 are arranged along one side thereof, and a horizontally long box-like shape is formed along a side opposite to this side (a side on the tip side of the fluorescent lamp when the fluorescent lamp is mounted). Are arranged. As the ballast 24, one ballast of a type for four fluorescent lamps is used. The ballast 24 may be arranged on the side (one side and / or both sides) along the side of the fluorescent lamp.

The main body 21 has three mounting holes 25 near the center of the plane portion 21a, and the lower ends of two or three stud bolts (not shown) hanging from the ceiling are passed through the mounting holes 25. The main body 21 is fixed to the ceiling by tightening with a nut.

The peripheral portion 21b of the main body 21 is bent downward, and only its four corner portions 21c are slightly longer, so that when the reflector 22 is mounted, it comes into contact with the reflector 22 and is pushed up.

On the other hand, the reflector 22 is painted white, for example, and its periphery swells downward.
When “a” is attached to the main body so as to be in contact with the flat portion 21a of the main body 21, a space is formed between the main body 21 and the main body. Of the surfaces constituting the space, two facing surfaces 22b control light distribution by inclined surfaces, and the two facing surfaces 22c are vertical surfaces. On one of the vertical surfaces 22c, a socket hole 26 having a size corresponding to the socket 23 disposed on the main body 1 is provided, and a lamp holder 27 is disposed on the vertical surface-side flat portion 22a opposite thereto. I have. Further, a square hole 25a is provided at a position corresponding to the mounting hole 25 of the main body 21 in the center of the flat portion 22a.

The reflector 22 has holes 2 provided at a plurality of locations.
8 and the holes 29 of the main body 21 corresponding thereto are fixed to the main body 21 by screwing. Reflector 22
Is fixed to the main body 1, a compact fluorescent lamp 30 (FIG. 2) is attached to the socket 23, and the tip of the fluorescent lamp is locked to the lamp holder 27. Thereafter, a baffle (not shown) similar to the conventional example is attached to the reflector 22 by engaging the engaging portion with the engaging hole 31 of the reflector 22.

As shown in FIG. 2, the ballast 24 includes the fluorescent lamp 3
On the distal end side of 0, it is arranged in a space 33 formed between the main body 21 and the reflector 22, and is fixed to the main body 21 by screws 32. In the cross section of the ballast 24,
The upper surface 24a is provided on the flat portion 21a of the main body 21 and the ballast 2
4 has an outer surface 24b on the peripheral portion 21b of the main body 21, and an inner surface 24c of the ballast 24 has a vertical surface 22c on the reflector 22.
The ballast 24 is arranged so as to be in contact with and closely contact with the reflector 22. Therefore, the heat of the ballast 24 is radiated to the main body 21 and the reflector 22 via the respective contact surfaces.

In FIG. 2, the ballast 24 has an upper surface 24.
a, the outer side surface 24b, the inner side surface 24c, and the bottom surface 24d are in contact with the main body 21 and the reflector 22 at four places. However, the inner side surface 24c may not be in contact with the reflector 22. Further, the bottom surface 24 d of the ballast 24 may be made to entirely contact the reflector 22. The ballast 24 has an upper surface 2
4a, the outer surface 24b, the inner surface 24c, and the bottom surface 24d may be in contact with the main body 21 and the reflector 22 at least at any three places. The vessel 24 has at least the upper surface 2
4a, the outer surface 24b and the bottom surface 24d.
And it is preferably in contact with the reflector 22.

The ballast 24 is, as shown in FIG.
0, that is, in the space 34 formed between the main body 21 and the reflector 22 on the side parallel to the fluorescent lamp, and in this case, the upper surface of the ballast 24 24a is on the flat portion 21a of the main body 21 and on the outer surface 2 of the ballast 24.
4b is disposed so as to contact and closely contact the peripheral portion 21b of the main body 21, and the bottom surface 24d of the stabilizer 24 is
2, so as to make full or partial contact.
Note that the inner surface 24 c of the ballast 24 may be entirely or partially inclined so as to be in contact with the inclined surface 22 b of the reflection plate 22.

[0019]

According to the lighting device of the present invention, the ballast is in direct contact with the main body and the reflector in at least three places in the space formed between the main body and the reflector formed around the lighting device. , The heat radiation efficiency is good, the cost can be reduced because there is no need to prepare a separate heat radiating plate, and the lighting device can be easily assembled.

[Brief description of the drawings]

FIG. 1 is an exploded view of a main body and a reflector portion of a lighting device of the present invention.

FIG. 2 is a cross-sectional view showing a ballast arranged in a space on the front end side of the fluorescent lamp.

FIG. 3 is a cross-sectional view showing a case where a ballast is arranged in a space on the side of the fluorescent lamp.

FIG. 4 is an exploded view of a conventional lighting device.

FIG. 5 is a cross-sectional view when a ballast is attached to a main body of a conventional lighting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Main body 21a Flat part 21b Peripheral part 21c Four corner part 22 Reflector 22a Central flat part 22b Surface (inclined surface) 22c Surface (vertical surface) 23 Socket 24 Stabilizer 24a Stabilizer upper surface 24b Stabilizer outer surface 24c Stabilizer Inside surface 24d Bottom of ballast 25 Mounting hole 25a Square hole 26 Socket hole 27 Lamp holder 28 Hole 29 Hole 30 Fluorescent lamp 31 Engagement hole 32 Screw 33 Space (at the front end of fluorescent lamp) 34 Space (of fluorescent lamp) On the side)

Claims (3)

[Claims] 1. A fluorescent lamp socket comprising: a main body having a flat portion mounted on a ceiling surface; and a reflector having a central flat portion mounted on a lower surface of the flat portion of the main body. On the other hand, the peripheral portion of the reflector bulges downward to form a space between itself and the main body, and has a socket hole from which the socket protrudes. A lighting device, wherein the lighting device is arranged to be in direct contact with the main body and the reflector at at least three of the side surface, the inner surface, and the bottom surface. 2. A ballast is disposed in a space on the tip side of a fluorescent lamp such that at least an upper surface and an outer surface of the ballast are in direct contact with a main body, and a bottom surface of the ballast is in direct contact with a reflector. The lighting device according to claim 1, wherein the lighting device is arranged. 3. A ballast is disposed in a space on the side of the fluorescent lamp such that at least an upper surface and an outer surface of the ballast directly contact the main body, and a bottom surface of the ballast directly contacts the reflector. The lighting device according to claim 1, wherein the lighting device is arranged in a lighting device.