JP4099603B2 - Explosion-proof lighting equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of an explosion-proof lighting fixture.
[0002]
[Prior art]
Conventionally, explosion-proof lighting fixtures are configured by, for example, arranging socket holders at both ends of a long lighting fixture body, and placing a straight tube lamp mounted on a lamp protection cylinder between the socket holders at both ends. Further, reflectors are arranged at both ends in the longitudinal direction of the luminaire main body.
[0003]
[Problems to be solved by the invention]
However, according to the above-described explosion-proof lighting fixture, the reflectors are arranged with the reflectors fixed to both ends in the longitudinal direction of the lighting fixture body, so that one explosion-proof lighting fixture performs illumination with different light distributions. There are drawbacks that cannot be done.
[0004]
This invention is invented in view of said point, Comprising: It aims at providing the explosion-proof type lighting fixture which can obtain multiple types of light distribution with one unit and a simple structure.
[0005]
[Means for Solving the Invention]
The present invention according to claim 1 has the following configuration. That is, a cylindrical socket holder is disposed at both ends of the luminaire main body, and a straight tube lamp mounted on a lamp protection cylinder is disposed between the socket holders at both ends.
In addition, a cylindrical socket holder arranged at both ends of the luminaire body is provided with a rotatable ring, a reflector is supported on the ring, and a plurality of protrusions are provided at predetermined intervals on the outer periphery of the socket holder. And a positioning support is inserted between the projections of the socket holder from the outside of the ring.
The reflector is set at a desired angle, and a plurality of light distributions can be obtained with a single explosion-proof lighting fixture.
[0006]
The invention according to claim 2 is the explosion-proof lighting fixture according to claim 1, wherein a plurality of cylindrical socket holders are arranged at both ends of the lighting fixture main body, and are arranged at the socket holders at both outer ends. A reflector is arranged on the ring facing outward.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below with reference to FIGS. In FIG. 1, reference numeral 1 denotes a lighting fixture body that is formed in a long shape. Reference numeral 2 denotes a hanging tool arranged near both ends of the luminaire body 1. A cylindrical socket holder 3 is supported near both ends of the luminaire main body 1, and the upper surface is fixed to the lower surface of the luminaire main body 1. Further, protrusions 4 are formed on a part of the outer peripheral wall of the inner end of the socket holder 3 at intervals of about 5 mm. Reference numeral 5 denotes an arc-shaped protrusion formed on the outer periphery of the socket holder 3.
[0008]
Reference numeral 6 denotes a ring that is fitted to the inner end of the socket holder 3, and has an inner peripheral wall having a recess 7 at a position corresponding to the protrusion 5 of the socket holder 3. Reference numeral 10 denotes a bolt that is fitted between the protrusions 4 of the socket holder 3 from the outside of the ring 6 and positions the angle of the reflector that is fixed to the ring 6.
[0009]
Reference numeral 8 denotes a socket mounted inside the socket holders at both ends, and reference numeral 9 denotes a translucent lamp protection cylinder supported between the socket holders at both ends, which is made of, for example, hard glass. A light source 11 is mounted between the sockets at both ends, and is configured by using, for example, a 20 to 40 watt straight tube fluorescent lamp. Reference numeral 12 denotes a reflecting plate fixed to the upper wall of the ring 6 and has an inner surface painted, for example, in white. Reference numeral 13 denotes a lid for fixing the socket.
[0010]
Next, an embodiment of attaching the reflection plate of the above explosion-proof lighting fixture will be described.
The structure shown in FIG. 1 is a structure using two straight tube fluorescent lamps, and a reflecting plate 12 is fixed to the upper wall of each ring 6. According to the structure shown in FIG. 1, by rotating the ring 6 and positioning with a bolt, the irradiation direction can be varied and wide illuminance can be obtained as shown in FIG.
[0011]
The structure shown in FIG. 3 is a structure using three straight tube fluorescent lamps, and is configured by fixing a reflector 12 to the upper wall of the ring 6 located on both sides. According to the structure shown in FIG. 4, the irradiation direction can be varied by rotating the ring 6 and positioning it with a bolt.
[0012]
The structure shown in FIG. 4 uses a single straight tube fluorescent lamp, and is configured by fixing a reflector 12 to the upper wall of the ring 6. According to the structure shown in FIG. 4, the irradiation direction can be varied by rotating the ring 6 and positioning it with a bolt.
[0013]
Moreover, you may comprise the reflection plate of an above-described explosion-proof type lighting fixture as left-right asymmetrical light distribution by setting a left-right angle to a different thing.
[0014]
【The invention's effect】
According to the first and second aspects of the invention described above, a single explosion-proof luminaire can obtain a plurality of types of light distribution, and has a special effect that the light distribution can be easily varied. is there.
[Brief description of the drawings]
FIG. 1 is a side view of an explosion-proof lighting device according to the present invention.
FIG. 2 is a side view when the angle of the reflection plate of the explosion-proof lighting fixture of FIG. 1 is varied.
FIG. 3 is a side view showing an embodiment of an explosion-proof lighting fixture according to the present invention when there are three light sources.
FIG. 4 is a side view showing an embodiment of an explosion-proof lighting apparatus according to the present invention when a single light source is used.
FIG. 5 is a front view when the socket holder and the ring of the explosion-proof lighting fixture shown in FIG. 1 are combined.
6 is a side view of FIG. 5. FIG.
7 is a front view of the socket holder of the explosion-proof lighting fixture shown in FIG. 1. FIG.
8 is a side view of FIG. 7. FIG.
9 is a front view of a ring of the explosion-proof lighting fixture shown in FIG. 1. FIG.
10 is a side view of FIG. 9. FIG.
FIG. 11 is a cross-sectional view showing the main part of the explosion-proof lighting fixture of the present invention.
FIG. 12 is a front view of the explosion-proof lighting device of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Lighting fixture body 2 Suspension tool 3 Socket holder 4 Protrusion 5 Protrusion 6 Ring 7 Recess 8 Socket 9 Lamp protection cylinder 10 Bolt 11 Light source 12 Reflector 13 Cover

Claims (2)

In an explosion-proof type lighting fixture in which a cylindrical socket holder is arranged at both ends of a lighting fixture body, and a straight tube lamp mounted on a lamp protection cylinder is placed between the socket holders at both ends. A cylindrical socket holder arranged at both ends of the ring is provided with a ring so as to be rotatable, a reflector is supported on the ring, and a plurality of protrusions are provided on the outer periphery of the socket holder at predetermined intervals. An explosion-proof luminaire characterized in that a support for positioning is inserted between the projections of the socket holder from the outside of the socket holder, and the reflector is set at a desired angle. 2. A plurality of cylindrical socket holders are arranged at both ends of the luminaire main body, and reflectors are arranged outwardly on rings formed on the socket holders at both outer ends. Explosion-proof lighting equipment.

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