JPH0643924Y2 - lighting equipment - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a lighting fixture with a translucent cover, which is installed on an installed low-voltage electric wire or the like.

[Conventional technology]

As a lighting system with improved workability and appearance, as shown in FIG. 3, a lighting system in which two electric wires 1 are erected and lighting devices 2 to 4 are installed and lighted is proposed. . The electric wire 1 is, for example, a low voltage wire of about 12 volts.
Of the lighting fixtures 2 to 4, the lighting fixture 2 at the right end in the figure is provided with a translucent cover 5.

This luminaire 2 is shown in FIGS. 4 and 5. Lamp 6
The two conductive arms 8 are attached to the bowl-shaped reflector 7 that covers the electric wire 1 with the joint 9 provided at the tip of the arm 8,
And it is electrically connected. The socket 12 is attached to the reflector 7. The translucent cover 5 is attached to the electric wire 1 by the hook 10.

[Problems to be solved by the device]

In such a lighting fixture that is attached to the electric wire 1, it is necessary to make the translucent cover 5 lighter, and a heavy one such as glass cannot be used. Therefore, the translucent cover 5
Must be made of synthetic resin such as acrylic and be thin. However, if the translucent cover 5 is made of a thin resin, it may be deformed by the heat of the lamp. Therefore, it is necessary to increase the distance between the translucent cover 5 and the lamp 6 to some extent, and there is a problem that the height H (FIG. 5) of the device becomes considerably high. That is, it cannot be a thin lighting fixture.

Further, when attempting to reduce the thickness of the lamp 6, due to the positional relationship among the lamp 6, the reflector 7, and the opening peripheral edge 5a of the translucent cover 5, the light of the lamp 6 directly enters into the eyes from the side, and glare becomes strong. There is. That is, if the translucent cover 5 is deeply covered so that the lamp 6 cannot be seen from the side, the translucent cover 5 becomes deeper by that amount, which makes it difficult to reduce the thickness.

An object of the present invention is to provide a lighting device provided with a synthetic resin light-transmitting cover, which can be made thinner without causing troubles due to lamp heat and which does not cause glare when viewed from the side. That is.

[Means for Solving the Problems]

The luminaire of the present invention is provided with a bowl-shaped reflector for covering the lamp, and a synthetic resin translucent cover is provided so as to face the opening of the reflector, and the translucent cover is provided with a through hole. . This through hole has substantially the same size as the range through which the reflected light of the reflection plate passes. Further, the center of the filament of the lamp, an arbitrary circumferential position of the opening edge of the reflector and the opening edge of the translucent cover are positioned on a straight line.

[Action]

According to the structure of this invention, the reflected light of the reflector does not hit the light-transmitting cover but passes through the through-hole. Therefore, the heat of the reflector does not act on the translucent cover. Only the direct light of the lamp enters the transparent cover and emits a soft diffused light from the outer surface of the transparent cover. Since the light reflected by the reflector is emitted from the through hole below the light-transmitting cover, light with high illuminance can be obtained in the lower portion. Further, since the center of the filament of the lamp, an arbitrary circumferential position of the opening edge of the reflecting plate, and the opening edge of the translucent cover are located on a substantially straight line, the lamp can be seen directly from the side. There is no glare.

〔Example〕

 An embodiment of this invention will be described with reference to FIG.

In this luminaire, the translucent cover 11 is made into a substantially conical and extremely thin shape, and a circular through hole 11a is provided in the center thereof. The translucent cover 11 is a translucent one formed of a synthetic resin such as acrylic. The size of the through hole 11a is substantially the entire range through which the reflected light a of the reflection plate 7 passes. The reflection plate 7 has a shape in which the reflected light a is in a slightly spread state or a shape in which the reflected light a is substantially parallel.

Further, the center 6a of the filament of the lamp 6, an arbitrary circumferential position of the opening peripheral edge 7a of the reflection plate 7, and the opening peripheral edge 11b of the translucent cover 11 are located on a substantially straight line l. Since other configurations are similar to those of the example of FIG. 5, the same parts are designated by the same reference numerals and the description thereof will be omitted.

According to this structure, the reflected light a of the reflection plate 7 is transmitted through the translucent cover 11
It does not hit and passes through the through hole 11a. Therefore, the reflected light a
Heat does not act on the translucent cover 11 and therefore the translucent cover
It is possible to bring the 11 closer to the lamp 6 and to make it thinner. Since the reflected light a of the reflection plate 7 is emitted from the through hole 11a below the translucent cover 11, light with high illuminance can be obtained in the lower part.
Only the direct light of the lamp 6 enters the translucent cover 11, and soft diffused light is emitted from the outer surface of the translucent cover 11.

Further, since the center 6a of the filament of the lamp 6, an arbitrary circumferential position of the opening peripheral edge 7a of the reflector 7 and the opening peripheral edge 11a of the translucent cover 11 are located on a substantially straight line l, when viewed from the side. In addition, the lamp 6 does not come into direct contact with the eyes and there is no glare.
Further, as described above, since the light-transmitting cover 11 is arranged on the substantially straight line l and the light-transmitting cover 11 is not covered deeper than this, the thickness of the light-transmitting cover 11 can be minimized in a range where the lamp light cannot be seen from the side.

Although the straight line 1 is horizontal in the above embodiment, it may not necessarily be horizontal, and the straight line 1'is inclined as shown in FIG. 2, and the filament center 6a of the lamp 6 is placed on the straight line l '.
And the peripheral edge 7a of the reflector 7 and the peripheral edge of the opening of the translucent cover 11.
11a and 11a may be located.

Further, although the above-mentioned embodiment is of a type that is installed on the electric wire 1, the present invention can be applied to a lighting fixture of a type that is hung on a ceiling or directly attached.

[Effect of device]

According to the luminaire of the present invention, the transparent cover is provided with a through hole, and the size of the through hole is set to be substantially the entire range through which the reflected light of the reflector passes, so that the reflected light of the reflector hits the transparent cover. Moreover, the translucent cover is not heated by the heat of the reflected light. Therefore, the translucent cover can be brought close to the lamp, and the thickness can be reduced. Further, since the center of the filament of the lamp, an arbitrary circumferential position of the opening edge of the reflecting plate, and the opening edge of the translucent cover are located on a substantially straight line, the lamp can be seen directly from the side. There is no glare. In addition, as described above, since the light-transmitting cover is arranged in a substantially straight line and the light-transmitting cover is not covered deeper than this, there is an effect that the thickness of the light-transmitting cover can be minimized in the range where the lamp light cannot be seen from the side.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention, FIG. 2 is a sectional view of another embodiment, FIG. 3 is a perspective view of a proposed example of a lighting system, and FIG. 4 is an exploded perspective view of the lighting fixture. FIG. 5 is a sectional view of the luminaire. 1 ... electric wire, 6 ... lamp, 6a ... filament center, 7 ... reflector, 7a ... opening edge, 8 ... arm, 11
...... Reflector, 11a …… Through hole, 11b …… Edge of opening

Claims (1)

[Scope of utility model registration request] 1. A luminaire having a bowl-shaped reflecting plate for covering a lamp and a synthetic resin light-transmitting cover facing the opening of the reflecting plate, wherein the light-transmitting cover is provided with a through-hole. The size of the through hole is set to be substantially the entire range through which the reflected light of the reflecting plate passes, and the center of the filament of the lamp, an arbitrary circumferential position of the opening peripheral edge of the reflecting plate, and the opening peripheral edge of the light transmitting cover. A lighting fixture characterized in that it is positioned on a substantially straight line.