JPH0736286B2 - lighting equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a lighting apparatus having an automatic flashing switch built therein, and more particularly to a technique for preventing malfunction of an attached automatic flashing switch. .

[Prior Art] Conventionally, there are provided various luminaires in which an automatic blinking switch 3 is built-in, and the automatic blinking switch 3 is automatically turned on when the surroundings are dark such as in the evening. And in these things, in general
As shown in the figure, the light fixture 2 and the automatic flashing switch 3 are housed in the luminaire main body 1 with the light shielding plate 11 interposed therebetween.
The lamp 2 is automatically turned on by the automatic blinking switch 3 when the surroundings become dark. As shown in FIG. 12, the automatic blinking switch 3 is provided with an opening 4a in the light-transmitting cover 4 located below the automatic blinking switch 3, and the light receiving portion 3a is located in this opening 4a. Are arranged. Reference numeral 14 is a bushing attached to the peripheral edge of the opening 4a. However, if the translucent cover 4 is provided with the opening 4a, there is a problem that insects, dust, moisture, etc. may enter from the opening 4a, which adversely affects the performance of the device, and the opening 4a and the light receiving portion 3a. There is a problem in that the gap 15 between and becomes visible and the appearance is impaired.
Therefore, as shown in FIG. 13, the automatic flashing switch 3
There is also provided one in which the light transmission cover 4 is stored. In this device, an automatic blinking switch 3 is arranged on one end side of the lamp 2 with a light shielding plate 11 interposed therebetween, and light detection by the light receiving portion 3a is performed via the translucent cover 4.

[Problems to be Solved by the Invention] However, in the conventional example as described above, when the lamp 2 is turned on, the direct light emitted from the lamp 2 is automatically blinked by the switch 3
It can be blocked by a shading plate 11 provided near the
Although it is prevented that the automatic blinking switch 3 malfunctions due to being detected by the light receiving portion 3a, the light emitted from the lamp 2 is reflected inside the translucent cover 4 as shown by an arrow a in FIG. When the light reaches the light receiving portion 3a, the automatic blinking switch 3 malfunctions and the lamp 2 is turned off.

The present invention is intended to solve the above-mentioned problems, and an object of the present invention is to prevent malfunction of the automatic flashing switch in a lighting device having a built-in automatic flashing switch in a light projecting cover. To provide lighting equipment.

[Means for Solving the Problems] In order to achieve the above object, the lighting device according to the present invention is an automatic flashing switch that lights the lighting device 2 when the lighting device 2 housed in the lighting device body 1 becomes dark sideways. 3 is arranged, and the automatic flashing switch 3 and the lamp 2 are covered with a common cover 4 having a light-transmitting property, and the inside of the cover 4 is located on the rear surface side of the cover 4 which faces the light receiving portion 3a of the automatic flashing switch 3. A light shield 5 for blocking the light from the lamp 2 that reflects light is provided so as to cover the automatic flashing switch 3, and a common cover 4 is provided.
The front end of the light shield 5 disposed on the back side of the cover is located within the thickness of the cover 4 and is not exposed on the front side.

[Operation] The light 2 in the luminaire main body 1 is automatically turned on or off by detecting the surrounding light / dark by the light receiving portion 3a of the automatic blinking switch 3 arranged inside the cover 4 through the cover 4. It Then, when the lamp 2 is turned on, the light from the lamp 2 which is reflected in the cover 4 and tries to enter the light receiving portion 3a of the automatic flashing switch 3 is blocked by the presence of the light shield 5 and enters the light receiving portion 3a. There is no.

[Examples] Hereinafter, the present invention will be described in detail based on illustrated examples.

As shown in FIGS. 1 to 3, the luminaire is formed by attaching a translucent cover 4 to the lower surface opening of the luminaire main body 1 whose lower surface is open. 6, the automatic flashing switch 3 and the like are stored and arranged. The lamp 2 is suspended from the top plate member 1a of the main body 1 of the luminaire.
It is attached to the lower surface of the reflection plate 8 which is suspended and supported by, and in the illustrated embodiment, it is arranged in two stages, upper and lower, by a mounting hook 9. The automatic blinking switch 3 is the lamp 2
Is attached to the side surface of the light-shielding plate 11 arranged at one end side of the cover by the fixture 10, and the light-receiving portion 3a formed at the bottom is covered by the cover 4.
It is placed close to the inner surface of the. Then, the light receiving section 3a detects the brightness of the surroundings of the lighting equipment through the cover 4 to turn on or off the lamp 2.
That is, when the surroundings of the luminaire are bright as in the daytime, it is detected that light enters the light receiving portion 3a of the automatic blinking switch 3 through the cover 4 to turn off the lamp 2, and the lamp 2 is turned off during the daytime. When the surroundings of the luminaire are dark as described above, the lamp 2 is turned on by detecting that the light receiving section 3a is in a lighting state because no light enters. When the light in the vicinity of the lamp 2 emitted from the lamp 2 enters the light receiving portion 3a when the lamp 2 is turned on, the automatic blinking switch 3 may malfunction, so the cover 4 of the portion facing the light receiving portion 3a
Is provided with a light shield 5 for blocking the light from the lamp 2 that reflects inside the cover 4. Here, as shown in the enlarged view of FIG. 3, the light shield 5 is not exposed to the front surface because the tip of the light shield 5 arranged on the back surface side of the cover 4 is located within the thickness of the cover 4. Is done. In the embodiment shown in FIG. 4, a recess 12 is provided to the extent that it does not penetrate into the inner surface of the cover 4 facing the light receiving portion 3a of the automatic flashing switch 3, and the light shield is provided in this recess 12. 5 is attached. As shown in FIG. 5, the light shield 5 is formed by forming a material having a small non-light-transmitting property or a light-transmitting property, such as resin or metal, into a ring shape, and the lower portion is inserted into the recess 12. By doing so, it is attached to the recess 12, and when it is attached to the recess 12, it is arranged so as to cover the periphery of the light receiving portion 3a of the automatic flashing switch 3. The direct light emitted from the lamp 2 is blocked by the light shielding plate 11, and the light reflected by the cover 4 and entering the light receiving portion 3a (arrow a in FIG. 10) is as shown in FIG. In addition, the light is blocked by the light shield 5, so that the light receiving section 3a does not detect the light of the lamp 2 and the automatic blinking switch 3 does not malfunction. At this time, by providing a recess 12 as shown in FIG. 4, the thickness dimension l of the cover 4 in the portion facing the light receiving portion 3a is made smaller than the thickness dimension L of the cover 4 in the other portion. The amount of light reflected from the inner surface of the light source 4 and reaching the vicinity of the light receiving portion 3a is regulated so that the light from the lamp 2 does not enter the light receiving portion 3a and the automatic blinking switch 3 does not malfunction.

FIG. 6 shows another embodiment of the present invention, in which the ring-shaped light shield 5 is formed by insert molding when the cover 4 is molded. It is a thing.

FIG. 7 shows still another embodiment of the present invention,
In this case, the light-shielding member 5 is placed in the recess 12 with an adhesive.
Is to be fixed by adhesion. As shown in FIG. 8, a bottom piece 5a is provided on the lower edge of the light shield 5 so that the presence of the bottom piece 5a can enhance the adhesive strength and further improve the light blocking effect. There is. Further, even in this case, it may be provided by simultaneously molding the light-shielding member 5 by insert molding as in the embodiment shown in FIG.

In the illustrated embodiment, the light shield 5 is attached to the inner surface of the cover so as to slightly project, but the light shield plate 1 is provided between the lamp 2 and the automatic flashing switch 3. As long as the light is securely shielded, it may be flush with the inner surface of the cover 4 as shown in FIG. In any of the above-described embodiments, the automatic blinking switch 3 and the lamp 2 have a common cover 4 having a light-transmitting property.
And the tip of the light shield 5 arranged on the back side of the common cover 4 is located within the thickness of the cover 4 and is not exposed to the front side. The light shield 5 is not exposed to the outside so that the appearance is not unsightly.

[Effect of the Invention] In the lighting equipment of the present invention, as described above, the automatic blinking switch and the lighting equipment are covered with a common cover having a light-transmitting property, so that insects, dust, moisture, etc. can be kept inside the lighting equipment main body. Not only can it be prevented from invading and adversely affecting the internal equipment, but the automatic flashing switch and the lamp are covered with a common translucent cover, which improves the appearance. In addition, a light-shielding body for blocking the light from the lamp that reflects inside the cover is provided on the back side of the cover facing the light-receiving part of the automatic flashing switch so as to cover the automatic flashing switch, and a common cover The tip of the light shield placed on the back side is located within the wall thickness of the cover so that it is not exposed on the front side, so when the lamp is lit, it reflects inside the common cover and receives light from the automatic flashing switch. From the lamp that reaches the department Light is blocked by the light shield, and it does not malfunction due to light from the lamp of the automatic flashing switch. Moreover, by providing the light shield on the common cover, the light shield can be separated. It is not necessary to support by a special support member, and the light shield can be arranged only by attaching a common cover. Furthermore, the light shield is not exposed on the surface side of the cover, and therefore, the light shield is provided. However, the appearance is not unsightly.

[Brief description of drawings]

1 is a side sectional view of an embodiment of the present invention, FIG. 2 is a front sectional view of the same, FIG. 3 is a partial sectional view of FIG. 2, and FIG. 4 is an enlarged sectional view showing a mounting state of a light shield. 5 and FIG. 5 are perspective views of a light shield used in the same as above, FIG. 6 is a sectional view showing another mounting state of the light shield, and FIG. 7 is a sectional view showing another mounting state of the light shield, and FIG. Is a perspective view of a light shield used in the same as above, FIG. 9 is a sectional view showing still another embodiment, FIG. 10 is a sectional view showing the action, and FIGS. 11 (a) and (b) are side views of a conventional example. Bottom view,
FIG. 12 is an enlarged sectional view showing a mounting state of the above-mentioned automatic blinking switch, FIG. 13 is a side sectional view showing another conventional example, and FIG. 14 is an enlarged sectional view showing the operation of the same. Lighting device main body, 2 is a lamp, 3 is an automatic flashing switch, 3a is a light receiving part, 4
Is a cover and 5 is a light shield.

Claims (1)

[Claims] 1. An automatic flashing switch for illuminating the lamp when it is dark in the side of the lamp stored in the main body of the lighting apparatus is arranged, and the automatic flashing switch and the lamp are provided with a common cover having a light-transmitting property. A light shield for blocking the light from the lamp that reflects inside the cover is provided on the back side of the cover that faces the light receiving part of the automatic flashing switch so as to cover the automatic flashing switch. A luminaire, characterized in that the tip of the light-shielding member arranged at is located within the thickness of the cover so as not to be exposed to the front side.