JP2555250Y2 - Lighting equipment for ring-shaped fluorescent lamps - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device for a ring-shaped fluorescent lamp, and is particularly suitable for a lighting device for a ring-shaped fluorescent lamp which is used by directly mounting the device body on a ceiling surface.

[0002]

2. Description of the Related Art An illumination device 1 for a ring-shaped fluorescent lamp, which is used by directly attaching the device body to a ceiling surface, is shown in FIG.
As shown in FIG. 1, a peripheral portion of a dish-shaped reflecting plate 3 is joined to the lower surface of an inverted dish-shaped appliance body 2 having a lighting circuit component (not shown) mounted therein, and a housing for accommodating the circuit component. A plurality of ring-shaped fluorescent lamps 5A and 5B are suspended and supported by a lamp holder 6 attached to the periphery of the housing 4 around the reflector 3 on the lower surface side of the housing 4. The mounting to the ceiling surface 7 is performed as follows through a mounting hole 8 provided in the center of the housing 4 through the instrument body 2 and the reflecting plate 3. That is, first, the hooking sealing cap 10 of the lighting fixture 1 is hooked and connected to the hooking sealing socket 9 of the power supply arranged on the ceiling surface 7, and is provided around the hooking sealing socket 9. The hook hole 12 provided on the periphery of the mounting hole 8 of the instrument main body 2 is engaged with the simple mounting bracket 11 and screwed. Thereafter, if necessary, the round globe 13 is arranged from the lower side of the housing 4 and locked on the peripheral edge of the instrument body 2, and the fluorescent lamps 5A and 5B are both covered and mounted.

[0003]

However, in such a conventional lighting fixture 1 for a ring-shaped fluorescent lamp directly mounted on a ceiling, the lamp holder 6 is attached to the peripheral portion of the housing 4 so that the ring-shaped fluorescent lamp 5A is provided. , 5B and the reflector 3 are increased. Therefore, the entire height of the lighting fixture 1 becomes thick, and it is difficult to make the lighting fixture 1 thin. In particular, when the round globe 13 is mounted, the globe 13 has a disadvantage that the shadows of the fluorescent lamps 5A and 5B are reflected on the globe 13 and the appearance is conspicuous.

[0004] In the ceiling-mounted lighting fixture 1,
Since the mounting hole 8 is provided in the center of the housing 4,
If the size of the housing 4 is reduced to a predetermined size or less, it is difficult to place the security ball 14, and, for example, in a 62W lighting device for a 30W, 32W dual lamp having a small lamp diameter,
As shown by the solid line, it is disposed above the side surface of the reflector 3 and above the 32W lamp 5B. Further, in the case of a 72W luminaire for two lamps of 40W and 32W having a large lamp diameter, as shown by a dotted line, 32W below the lower surface of the reflector 3 is used.
It is arranged at a position inside the lamp 5A. Therefore, in the conventional lighting fixture 1 for a ring-shaped fluorescent lamp directly mounted on a ceiling, it is necessary to prepare a different reflecting plate 3 for each model of 62W and 72W.

Therefore, the present invention has been made in view of the above, and it is possible to reduce the height of the lighting equipment as much as possible and to keep the size of the housing 4 within a predetermined size. It is an object of the present invention to provide a lighting device for a ceiling-mounted ring-shaped fluorescent lamp in which a reflector can be shared regardless of the wattage.

[0006]

SUMMARY OF THE INVENTION For this reason, according to the present invention, a dish-shaped reflecting plate whose side surface is formed in an arc shape abuts on the lower surface of an inverted dish-shaped appliance body, and a ring-shaped fluorescent lamp is provided on a side edge of the reflecting plate. In the illumination device for a ring-shaped fluorescent lamp, a plurality of recesses having a mounting hole for a lamp holder are formed at predetermined intervals on an arc-shaped side surface of the reflector, and the reflector is run in one of the recesses. A notch for arranging a lamp socket and a security ball is formed, and the notch is fitted with a concave cover having a wall surface for shielding a gap between the instrument body and the reflector.
The lamp socket and the security ball are arranged in the recessed part of.

[0007]

In the lighting device for a ring-shaped fluorescent lamp having the above structure, the ring-shaped fluorescent lamp is mounted as close as possible to the periphery of the reflecting plate because the lamp holder is mounted in the recess formed on the arcuate side surface of the reflecting plate. Can be done. On the other hand, since the lamp socket is also housed in the concave portion of the cover of the notch, it can be easily attached to the terminal pin of the ring-shaped fluorescent lamp which is attached close to the peripheral edge of the reflector. In addition, the security ball is also housed in the concave part of the cover of the notch of the reflector, so it is easy to maintain and replace the security ball if it is installed inside the minimum diameter lamp below the reflector and inclined inward. Can be.
Therefore, the reflection plate can be used in common for the high wattage luminaire having the minimum lamp diameter of 30 W or more.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a partially cutaway sectional view of a lighting device 21 for a ring-shaped fluorescent lamp according to the present invention.
In the same manner as described above, a dish-shaped reflecting plate 23 whose side surface is formed in an arc shape is abutted against the lower surface of the inverted dish-shaped appliance main body 22 to form a housing 24 for accommodating a circuit component (not shown) therein. In addition, an illumination device for a ring-shaped fluorescent lamp directly mounted on a ceiling, in which ring-shaped fluorescent lamps 25A and 25B of 30W and 32W are suspended around the periphery of the reflection plate 23, is shown.

The lighting fixture 21 is different from the conventional lighting fixture 1 in that a ring-shaped fluorescent lamp 25
A, 25B and a security ball 26 are mounted. The ring-shaped fluorescent lamps 25A, 25B are mounted very close to the arc-shaped side surface of the dish-shaped reflector 23. Small 30W ring-shaped fluorescent lamp 25
Inside the A, the head is attached with the head inclined inward.

FIG. 2 is a view for explaining details of the mounting structure, and is an exploded perspective view of a housing 24 of the lighting fixture 21. FIG. The upper inverted dish-shaped fixture main body 22 is the same as the fixture main body 2 of the conventional lighting fixture 1, and has a central portion of a lower surface, at which a power supply sealing socket disposed on a ceiling (not shown) is provided. In order to hook the power supply hooking sealing cap 27 and connect the power supply, an instrument mounting hole 28 communicating with the reflection plate 23 is provided, and around it is hooked and locked by a simple mounting bracket (not shown). Hook holes 29 are provided. Further, a circuit board 30 on which an electronic ballast (not shown) is mounted is mounted in a concave portion around the circuit board.
A, two lamp sockets 31 for powering 25B
A and 31B are derived by wiring codes.

On the other hand, the lower reflecting plate 23 is a unique structure of the present invention, and the recesses 32 are formed on the arc-shaped side peripheral surface at intervals of about 120 °. A holder mounting hole 34 for mounting the lamp holder 33 is provided. Also, the lamp socket 3 of the appliance body 22
A notch 35 is formed between a pair of recesses 32, 32 on the side peripheral surface corresponding to the lead-out portions of 1A, 31B toward the peripheral edge from the instrument mounting hole 28 at the center, and is formed in a C-shape.

The components arranged in the middle are the reflection plate 23
Concave cover-3 having a side wall 36 for shielding a gap formed between the instrument main body 22 in the instrument mounting hole 28 and the notch 35.
7, which is formed into a shape that fits into the notch of the C-shaped reflection plate 23. A lamp socket 31 is provided on a side wall 36 of the concave cover 37 along the periphery of the notch 35.
A, 31B Wiring code lead holes 38A, 38B
However, a socket insertion hole 39 of the security ball 26 is provided in the lower surface portion.

The lighting fixture 21 having such a structure includes a reflecting plate 23.
Since the lamp holder 33 is attached to the concave portion 32 of the arc-shaped side peripheral surface, the annular fluorescent lamps 25A and 25B can be attached very close to the arc-shaped side surface of the reflection plate 23. Further, according to the reflector 23 having such a structure, as shown in the perspective view of FIG. 3, the lamp socket 31 is disposed in the concave cover 37 in the notch 35 of the reflector 23, so that The lamp socket 31 can be easily mounted on the terminal pin of the ring-shaped fluorescent lamp 25 which is close to the side surface. In addition, the security ball 26 can be easily mounted in the socket insertion hole 39 of the cover 37 through the notch 35 of the reflector 23 at the position inside the lamp regardless of the lamp having the minimum diameter. .

[0014]

As described above, according to the present invention, a plurality of recesses for mounting the lamp holder are formed on the arcuate side surface of the reflector, and the notches for arranging the lamp socket and the security ball are provided between these recesses. Is formed, the ring-shaped fluorescent lamp can be mounted and used close to the peripheral edge of the reflector, and there is no restriction on the place where the security ball is mounted, and the reflector can be commonly used.

[Brief description of the drawings]

FIG. 1 is a partially cutaway cross-sectional view of a lighting device for a ring-shaped fluorescent lamp of the present invention.

FIG. 2 is an exploded perspective view showing a main part of the configuration of the lighting fixture of FIG. 1;

FIG. 3 is a perspective view showing a main part of the configuration of the lighting fixture of FIG. 1;

FIG. 4 is a side view showing a configuration of a conventional illumination device for a ring-shaped fluorescent lamp.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Lighting fixture 22 Fixture main body 23 Reflector 25 Ring-shaped fluorescent lamp 26 Security ball 31 Lamp socket 32 Depression 33 Lamp holder 34 Holder mounting hole 35 Notch 36 Shielding wall surface 37 Concave cover

Claims (1)

(57) [Scope of request for utility model registration] 1. A lighting device for a ring-shaped fluorescent lamp in which a dish-shaped reflecting plate whose side surface is formed in an arc shape abuts on a lower surface of an inverted-dish-shaped device main body, and a ring-shaped fluorescent lamp is suspended from a side edge of the reflecting plate. In the reflector, a plurality of recesses having a mounting hole for a lamp holder are formed at predetermined intervals on an arc-shaped side surface, and a notch for arranging a lamp socket and a security ball is formed between these recesses. The notch is fitted with a concave cover having a wall surface for blocking a gap between the instrument body and the reflector, and a lamp socket and a security ball are arranged in the concave portion of the cover. Lighting equipment for annular fluorescent lamps.