JPH025454Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] This invention relates to lighting equipment such as an open-bottom fluorescent lamp.

[Background technology]

Conventionally, for example, in a tenant building, it is not known at the time of construction what kind of work the room will be used for, so general equipment, such as equipment with an open bottom, is often installed. When the fixtures are turned on, the floor illuminance is generally 500 to 800 lx. However, when offices, stores, etc. actually move in, a lighting environment suitable for the work is required. In other words, if it is an office, office equipment, etc. will be installed, and lighting equipment that will not be reflected in the VDT will be required. In that case, replacing the existing equipment would be costly, so a separately sold VDT anti-reflection louver (hereinafter referred to as OA louver) or the like would be attached to the existing equipment. In this case, since the OA louver covers the lower part of the lamp, the illuminance on the lower surface is lowered several steps from the initial level. Therefore, it is necessary to increase the amount of light from the fixture.

[Purpose of invention]

The object of this invention is to provide a lighting fixture that can easily add more lamps and that can eliminate the reduction in illuminance when a louver is attached.

[Disclosure of invention]

The lighting equipment of this invention has a ballast for additional lamps installed on the lower surface open type equipment body, which has ballasts for two lamps and two sets of sockets, covers the lower opening of the equipment body with a louver, and provides a ballast for additional lamps. A socket for an additional lamp can be connected to the lamp.

In this way, when the bottom opening is open, a lamp is attached to each of the two sets of sockets, and when the bottom opening is covered with a louver, the socket for the additional lamp is connected to the ballast for the additional lamp to add more lamps. .

Embodiment A first embodiment of this invention is shown in FIGS. 1 and 2. FIG. 1 shows the state before adding lamps, and FIG. 2 shows the state after adding lamps and installing louvers.

In FIG. 1, reference numeral 1 denotes a downward-grooved, open-bottom instrument main body, which is provided with a reflector mount 2;
The reflector plate 3 is attached with attachment screws 4 such as thumb screws. There are socket mounting plates 5 on the bottom surface of both ends of the device body 1.
The socket mounting plate 5 has three socket mounting notches 6A and 6B arranged side by side. Two sets of sockets 8 for attaching two straight tube fluorescent lamps 7 are attached to the socket attachment notches 6A on both sides.
The center socket mounting notch 6B is used as a spare for adding a lamp. A ballast 9 for two lamps connected to a socket 8 is installed inside the appliance main body 1, and a ballast 10 for an additional lamp is installed in advance.
The additional lamp ballast 10 is connected to the terminal block 11 through power connectors 12A and 12B, and is also connected to the additional lamp socket 13 through a cord 14. The terminal block 11 is for connection to a commercial power source, and is connected to the two-lamp ballast 9 by a cord. The power connectors 12A and 12B are disconnected when no additional lamps are installed. In addition, the socket 13 for the additional lamp is connected to the main body 1 of the appliance at this time.
The cord 14 is stored in the ballast 10 for an additional lamp. Note that the cords 14 may simply be tied together. The reflector plate 3 has three socket insertion holes 15 and 16 (FIG. 2) provided at both ends, through which the sockets 8 on both sides and the lamp extension socket 13 are inserted.

The lamp addition state shown in FIG. 2 will be explained. At this time, remove the additional lamp socket 13 from the state shown in Figure 1.
Pull it out and attach it to the spare socket attachment notch 6B of the instrument body 1. Also, remove the mounting screws 4 that were attaching the reflector 3, place the louver fixture 17 on the bottom surface of the reflector 3, and tighten the mounting screws 4 again to attach the reflector 3.
and fix the louver fixture 17 to the reflector fixture 2. The louver fixture 17 is provided with a screw hole,
A louver 18 for OA is fixed with a louver mounting screw 19 to cover the lower opening of the instrument body 10.

In this way, the lack of lower illuminance due to the attachment of the louver 18 can be compensated for by adding the central lamp 20. In this case, unlike replacing the entire lighting fixture, it is possible to add more lamps 20 and louvers 18.
Since it only requires installation, it can be done easily and inexpensively without requiring large-scale replacement work.
Moreover, since the ballast 10 for additional lamps, the socket 13 for additional lamps, etc. are pre-installed in the main body 1 of the appliance, additional lamps 20 can be easily installed, and there is no need to add parts later. The parts fit well. Moreover, there is no need for special electrical work, and even an amateur can easily perform it.

3 and 4 show a second embodiment. In this example, a power connector 12A' for an additional lamp is provided on a terminal block 11' provided in the appliance body 1, and a storage space for a ballast 10' for the additional lamp is formed. The ballast 10' for the additional lamp is attached to the fixture main body 1 when installing the louver 18 as shown in FIG.
Screw it on. The other configurations are the same as in the first embodiment.

Even with this configuration, the lamp 20 can be easily added, and the ballast 10' for the additional lamp can be easily added.
The structure is such that additional lamp sockets 13 and additional lamp sockets 13 can be added as needed, thereby eliminating waste of parts.

[Effect of idea]

According to the lighting equipment of this invention, when the lower opening of the equipment body is covered with a louver, additional lamps are added by connecting the additional lamp socket to the additional lamp ballast, making it easy to add more lamps. Moreover, it is possible to obtain the effect of eliminating the decrease in illuminance when the louver is attached.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of the first embodiment of this invention, Fig. 2 is an exploded perspective view of the lamp in its expanded state;
FIG. 3 is an exploded perspective view of the second embodiment, and FIG. 4 is an exploded perspective view of the second embodiment with lamps added. 1... Instrument body, 3... Reflector, 6A, 6B...
... Notch for socket installation, 7 ... Lamp, 8 ... Socket, 9 ... Ballast for 2 lights, 10 ... Ballast for additional lamp, 11 ... Terminal block, 12A, 12B ...
... Connector, 13 ... Socket for additional lamp, 1
8,18'...Luba.

Claims (1)

[Scope of utility model registration request] a bottom-open type appliance body with a built-in ballast for two lamps; two sets of sockets provided in the appliance body and connected to the ballast for two lamps; and a ballast for an additional lamp provided in the appliance body; an additional lamp socket that is removably provided on the appliance body and connected to the additional lamp ballast; and a louver that removably covers the lower opening of the appliance body with the additional lamp socket attached. Equipped with lighting equipment.