JP2701998B2 - Lighting equipment for multiple lights - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for illuminating offices, shops, etc. by providing a plurality of straight tube fluorescent lamps having bases at both ends in an apparatus body having an open lower surface. The present invention relates to a lighting device for multiple lights.

[0002]

2. Description of the Related Art A conventional lighting fixture of this kind has a built-in reflector in a fixture body having an open lower surface, a lighting circuit attached thereto, and, for example, two straight tube fluorescent lamps in the fixture body. Are arranged in parallel with the open lower surface of the instrument body. As the lighting circuit for lighting these fluorescent lamps, a two-lamp serial sequential starting lighting circuit which has a low secondary voltage per lamp and is economical is generally used.

[0003]

In a multi-lamp lighting device, if it is possible to perform thinning-out lighting in which some lamps are turned off in addition to normal lighting in which all lamps are turned on, it is convenient because power saving can be achieved as necessary.

However, in the conventional multi-lamp lighting apparatus using a straight tube fluorescent lamp, two straight tube fluorescent lamps are turned on by a two-lamp serial sequential starting lighting circuit. This lighting circuit cannot be turned on unless two straight tube fluorescent lamps are set. For this reason, there is a problem that it is not possible to save power while lighting. Therefore, when illuminating an office or the like by connecting a large number of such multi-lighting lighting devices in a straight line, there is no other way to save power by turning off every other or every two lighting devices, but there is no alternative. In such a case, the brightness of the illumination becomes non-uniform. Therefore, it is necessary to provide a light control device in order to reduce the illumination difference. Then, there is a problem that equipment costs increase. In addition, there is also a problem that the brightness of the ceiling surface on which the fixture is installed becomes uneven due to the illumination difference. In addition, the turned-off straight tube fluorescent lamp is exposed at the bottom opening of the appliance body and can be easily visually recognized.
There was a problem that the appearance of the device was not good.

SUMMARY OF THE INVENTION It is an object of the present invention to save power by thinning-out lighting if necessary, improve the appearance of appliances at the time of thinning-out lighting, and to easily attach and detach a straight tube fluorescent lamp. An object of the present invention is to provide a multi-lamp lighting device capable of preventing a straight tube type fluorescent lamp from being blackened due to its attachment and detachment.

[0006]

In order to achieve the above object, a multi-lamp lighting device according to the present invention comprises a device body having an open lower surface, and one wall and the other wall of the device body opposed to each other. And a lamp receiving plate provided with a pair of pin insertion ports and arranged in parallel with the lower surface at an interval in the vertical direction.
A plurality of lamp sockets provided at 0 degrees different from each other, and a pair of lamp sockets each having a base provided with lamp pins protruding at both ends, and mounted at the same height position on both of the walls to form a pair. Insert the lamp pin into the insertion slot,
A plurality of straight tube-type fluorescent lamps removably mounted over the paired lamp sockets, and the appliance connected to the paired lamp sockets as dedicated to each of the plurality of fluorescent lamps A plurality of lighting circuits attached to the main body.

[0007]

In the structure of the present invention, there is a dedicated lighting circuit for each of the plurality of straight tube fluorescent lamps, and the lighting circuits can independently light the fluorescent lamps. , While the lighting of the fluorescent lamp located above is continued, the fluorescent lamp above this can be turned off if necessary, and the thinned lighting can be performed. In this thinned lighting, the turned-off fluorescent lamp is located right above the lowest fluorescent lamp that is turned on, and is hidden by the turned-on fluorescent lamp,
In addition, since the fluorescent lamp located at the lowermost position is lit and glowing, it is possible to make it difficult to visually recognize the turned-off fluorescent lamp. Further, since a plurality of straight tube fluorescent lamps are arranged side by side in the vertical direction, the lamp pins of this lamp are mounted at a lower position when the upper lamp is attached or detached. It moves while pressing the lamp receiving plate of the lamp socket supporting the light lamp. However, the lamp receiving plates of the lamp sockets arranged side by side so as to be displaced in the vertical direction have directions different from each other by 90 degrees (in other words, straight lines connecting a pair of pin insertion ports of the lamp receiving plate). Are different from each other by 90 degrees without the directions of these straight lines intersecting with each other.), The lamp pin of the fluorescent lamp to be detached is moved while pressing the socket receiving plate of the lower lamp socket as described above. At this time, there is little possibility that the fluorescent lamp inserted into and removed from the pin insertion opening of the receiving plate is electrically connected across the two lighting circuits.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In FIG. 1 to FIG. 3, reference numeral 1 denotes a sheet metal device main body which is embedded and fixed in a ceiling, has a substantially rectangular parallelepiped shape, and its lower surface is open. The lower edge 2 of the main body 1 projects outward and comes into contact with the lower surface of the ceiling plate 3 as shown in FIG.

As shown in FIG. 1, a horizontal rail 4 extending across the side walls 1a and 1b opposed to each other in the width direction is laid on the upper part in the instrument body 1. A plurality of horizontal rails 4 are provided at intervals in the longitudinal direction of the instrument body 1. The reflection plate 5 housed in the upper part of the instrument body 1 is fixed to each horizontal rail 4 with screws 6. The reflector 5 has substantially the same length as the instrument body 1 and has a shape that opens toward the open lower surface of the instrument body 1. Also, the side walls 1a, 1 of the appliance body 1
The V spring latch 7 is fixed to the inner surface of each of the b.

End walls 1 opposed to each other in the longitudinal direction of the instrument body 1
Two lamp sockets 8 and 9 are attached to c and 1d (see FIG. 2), respectively. These sockets 8, 9 are
As shown in FIG. 1, they are arranged side by side with a gap in the vertical direction with respect to the open lower surface of the instrument body 1. The upper lamp socket 8 has a lamp receiving plate 11 provided with a pair of pin insertion ports 10 respectively.
Each has a lamp receiving plate 13 provided with a pair of pin insertion holes 12. Each of the lamp receiving plates 11 and 13 is movably provided by being biased by a spring 14 as represented by the lamp receiving plate 11 shown in FIG. Fifteen
Is stored.

The lamp receiving plate 11 of the upper lamp socket 8 located in a pair in the longitudinal direction of the appliance body 1 and the lower lamp socket 9 also located in a pair in the longitudinal direction of the appliance body 1. Are different from each other by 90 degrees. That is, in the case of the present embodiment, as shown in FIG. 1, the lamp receiving plate 11 is provided so that the pair of pin insertion ports 10 are arranged in the horizontal direction, and the pair of pin insertion ports 12 are arranged in the vertical direction. Is provided with a lamp receiving plate 13.

A straight tube-type fluorescent lamp 16 is removably mounted on the upper lamp socket 8, and a straight tube-type fluorescent lamp 17 is removably mounted on the upper lamp socket 9. It can be attached. The upper and lower two fluorescent lamps 16 and 17 each have a base 19 having lamp pins 18 protruding at both ends as represented by the fluorescent lamp 16 shown in FIG. These fluorescent lamps 16 and 17 are mounted by inserting their lamp pins 18 into the pin insertion openings 10 or 12, and are arranged inside the reflection plate 5.

As shown in FIG. 1, a lighting device 20 is mounted on an inner surface of a ceiling wall 1e of the appliance body 1. The lighting device 20 includes a first lighting circuit 21 for lighting only the upper fluorescent lamp 16 and a second lighting circuit 22 for lighting only the lower fluorescent lamp 17 as shown in FIG. And is formed from These lighting circuits 21,
Reference numeral 22 denotes the same configuration, including an oscillating circuit 24 having a transistor or the like (not shown) for obtaining high-frequency power from a commercial AC power supply 23 and a transformer 25 for boosting the high-frequency power. The lamp 16 or 17 is turned on.

A frame 26 for covering and covering the lower edge 2 is attached to the lower part of the instrument body 1. V is
A V-spring 28 is mounted via a spring mounting bracket 27. The V-spring 28 is detachably engaged with the V-spring latch 7 from below, and the engagement of the V-spring 28 attaches the frame 26.

On the frame 26, a light control device 29 arranged at the lower part of the instrument body 1 is supported. This light control device 29
Are a pair of left and right reflectors 3 extending in the longitudinal direction of the instrument body 1.
0 and a plurality of parallel louver plates 31 laid across the reflectors 30. The pair of reflectors 30 are arranged in a C shape so as to open toward the open lower surface of the instrument body 1, and one of the reflectors 30
The upper edge is close to one lower edge of the reflector 5, and the upper edge of the other reflector 30 is also closer to the other lower edge of the reflector 5. In FIG. 1, reference numeral 32 denotes positioning pins projecting from the inner surfaces of the end walls 1c and 1d, which are engaged with the outer surface of the reflection plate 30 to position the light control body 29.

In the lighting fixture of the ceiling embedded type configured as described above, the first lighting circuit 21 of the lighting device 20 can independently turn on or off the upper fluorescent lamp 16 and the second lighting circuit 22. Thus, the lower fluorescent lamp 17 can be turned on or off independently. Therefore, during normal use, the upper and lower fluorescent lamps 16,
When the lamp 17 is turned on, the lower part of the fixture can be illuminated by the combined light of the light emitted directly downward from the lamps 16 and 17 and the light reflected downward by the reflectors 5 and 30. Since this device has the light control body 29, the glare can be cut by the light control body 29 at a light shielding angle of about 30 °.

To save power, the first lighting circuit 21 is turned off, and only the upper fluorescent lamp 16 is turned off while the lower fluorescent lamp 17 is kept lit. In this way, thinned-out lighting is possible. In this thinning lighting, the upper fluorescent lamp 16 which is turned off is turned off.
Is covered with the lower fluorescent lamp 17 located immediately below, and since the fluorescent lamp 17 is turned on, it is difficult to visually recognize the upper fluorescent lamp 16.

The fluorescent lamp 16 thus turned off
The visibility of the device can be improved, so that the appearance of the device at the time of thinning-out lighting can be improved. In addition, in the case of the present embodiment, since the light control body 29 having a light shielding angle of about 30 ° is provided, the upper fluorescent lamp 16 that has been further turned off can be hardly visually recognized.

Therefore, in the case where the lighting equipment is used linearly and continuously on a ceiling of an office or the like, the above-mentioned thinning-out lighting is performed so that every other lighting equipment or every other lighting equipment is turned off. Since there is no need to conserve power, the brightness of the lighting will not be uneven, and a dimmer to reduce uneven lighting differences will not be required. The brightness can be made uniform.

Further, in this apparatus, in order to mount the upper fluorescent lamp 16 with the light control body 29 removed,
First, as shown in FIG. 2, the lamp 16 is obliquely introduced into the apparatus main body 1 through the lower surface opening thereof, and the lamp pin 18 on the upper end side of the lamp 16 is connected to one of the opposing upper lamp sockets 8. It is inserted into the pin insertion opening 10 of the lamp receiving plate 11 provided. Next, the other end of the lamp 16 is pushed up in the direction of arrow A in FIG. Finally, the lamp pin 18 at the other end of the lamp 16 is inserted into the pin insertion hole 10 of the other lamp socket 8. Then, the lamp receiving plate 11 of each lamp socket 8 is
With this force, the lamps 16 are brought close to each other, and the upper fluorescent lamp 16 is attached.

When the fluorescent lamp 16 is moved in the direction of arrow A as described above, the lamp pin 18 at the other end of the lamp 16 is positioned obliquely below the upper lamp socket 8. Lamp receiving plate 13 of socket 9
, While passing therethrough, without causing an overcurrent to flow through the filament of the lamp 16.

That is, the mounting operation of the upper fluorescent lamp 16 is performed by the pair of pin insertion ports 1 of the lamp socket 8.
This is done according to the arrangement of 0. That is, in the present embodiment, the fluorescent lamps 16 are oriented so that the lamp pins 18 are arranged in a horizontal direction, but the pair of pin insertion holes 12 of the lower lamp socket 9 are , The lamp pin 18 passes through a position displaced from the pair of pin insertion ports 12 with the movement in the direction of the arrow A. Therefore, the lamp pin 18 is
There is very little risk of accidental insertion.

By the way, for example, the lower lamp socket 9
In the case where the lamp receiving plate 13 is provided so that the pin insertion ports 12 are arranged in the vertical direction, the pin insertion port 12 is located on the passage path of the lamp pin 18. Is very likely to be accidentally inserted. Then, if such a state occurs, the transformer 2 of the first and second lighting circuits 21 and 22 will be displayed on the circuit.
5, the fluorescent lamp 16 is connected as shown by a two-dot chain line in FIG. Therefore, the lighting device 20 is in a no-load state while the power supply 23 is being input, and a normal 3 is connected between the filament circuit terminals a and b and between c and d.
About twice the voltage (12 V) is applied. However, since the filament resistance of the fluorescent lamp 16 is small, an overcurrent flows through the filament. Therefore, the emitter of the filament disappears, and the filament abnormally generates heat. I do.

However, in this luminaire, as described above, when the upper fluorescent lamp 16 is attached or detached, the possibility that the lamp pin 18 is erroneously inserted into the pin insertion port 12 is extremely small. It is less likely that the fluorescent lamp 16 will be instantaneously blackened due to an overcurrent. At the same time, since the erroneous insertion of the lamp pin 18 is prevented as described above, the upper fluorescent lamp 16 can be easily attached and detached.

The present invention is not limited to the above embodiment. For example, three or more straight tube fluorescent lamps may be used, and a plurality of lowermost straight tube fluorescent lamps are arranged in parallel with the open lower surface of the appliance body, and each of these lamps is provided. The present invention can also be applied to a luminaire in which at least one straight tube-type fluorescent lamp is disposed above the lamp.

[0026]

According to the multi-lamp lighting apparatus of the present invention described in detail above, each of the opposing one wall and the other wall of the apparatus body having the open lower surface is perpendicular to the lower surface. A plurality of lamp sockets are juxtaposed at intervals, the directions of the lamp receiving plates of the sockets are made different from each other by 90 degrees, and a plurality of straight tube fluorescent lamps mounted over these sockets are respectively provided. Since the dedicated lighting circuit is provided in these circuits, the lighting of the lowermost fluorescent lamp is continued by these circuits, and the lighting of the fluorescent lamp on the lower side can be turned off if necessary. The illuminated fluorescent lamp can be made harder to see by the lit lamp on the lower side, so that the appearance of the appliance can be improved. Moreover, the direction of the lamp receiving plate of each lamp socket, which supports a plurality of straight tube fluorescent lamps at intervals in the vertical direction, is different by 90 degrees as described above. Since the lamp pins of the lamp to be inserted are less likely to accidentally enter the pin insertion holes of the lamp receiving plate of another lamp socket, the fluorescent lamp can be easily attached and detached.
As described above, since it is unlikely that the fluorescent lamp is erroneously inserted into the pin insertion port, the fluorescent lamp to be removed is not electrically connected across the two lighting circuits, and therefore, the straight tube is attached to and detached from the lamp. Blackening of the shaped fluorescent lamp can be prevented.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a part of a ceiling-embedded multi-lamp lighting device according to an embodiment of the present invention as viewed in the direction of arrow Z in FIG.

FIG. 2 is a schematic sectional view for explaining a procedure for mounting the fluorescent lamp of the embodiment.

FIG. 3 is an exemplary perspective view showing the entire multi-lamp lighting apparatus of the embodiment.

FIG. 4 is a diagram showing an electric circuit of the multi-lamp lighting apparatus of the embodiment.

[Explanation of symbols]

1 ... instrument body, 8, 9 ... lamp socket, 10, 12, ...
Pin insertion holes, 11, 13 ... Lamp receiving plate, 16, 17 ...
Straight tube fluorescent lamp, 18 ... lamp pin, 19 ... base,
21, 22, ... lighting circuit.

Claims (1)

(57) [Claims] 1. An appliance body having an open lower surface, and one wall and the other wall of the appliance body opposed to each other, which are arranged side by side at a vertical interval to the lower surface. A lamp receiving plate provided with a pair of pin insertion ports, a plurality of lamp sockets provided with the directions of the lamp receiving plates differing from each other by 90 degrees, and a base provided with lamp pins protruding at both ends. A plurality of lamp sockets which are mounted at the same height position on the both walls and which are inserted into the pin insertion openings of the paired lamp sockets, and which are detachably mounted over the paired lamp sockets. And a plurality of lighting circuits connected to the pair of lamp sockets and attached to the appliance body as dedicated ones for each of the plurality of fluorescent lamps. Lighting equipment.