JPH10302535A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire obtaining intended lamp control effect. SOLUTION: This luminaire is equipped with a luminaire main body 5 having a reflecting plate 10 for reflecting the light of lamps 16, and a sensor light receiving unit 40, (having a sensor light receiving part 23, arranged on the back surface side of the reflecting plate, and for detecting brightness in the periphery of the main body 5, on the tip, and automatically controlling the brightness of the lamp fitted to the main body 5); and a tubular shading tube 45, having a received-light leading hole part 46 on the tip, is provided, protrudedly from the surface of the reflecting plate, on a fitting hole 35 formed on the reflecting plate directed to the sensor light receiving part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a conference room, an office,
The present invention relates to a lighting device having a sensor light receiving unit for power saving, such as an office.

[0002]

2. Description of the Related Art Illumination equipment having a sensor light receiving unit for power saving according to the prior art is generally known as shown in FIG.

As shown in FIG. 3A, this lighting fixture has a sensor light receiving unit integrated type in which a sensor light receiving unit is integrally provided on an end face of the lighting fixture, and FIGS. 3B and 3C.
As shown in (1), there is a sensor light receiving unit separately provided type in which a sensor light receiving unit is separately provided on an end face of a lighting fixture.

The lighting fixture 1 used for the sensor light receiving unit integrated type and the sensor light receiving unit separate type includes, for example, a box-shaped fixture main body 5 which is opened downward, and a reflector 10 along the longitudinal direction of the fixture main body. Are mounted in the instrument body.

[0005] The reflector 10 has a V-shaped reflector 10a protruding downward in the V-shape along the longitudinal direction of the reflector and protruding at the center in the width direction of the reflector. . At both ends of the V-shaped reflector 10a, lamp sockets 15, 15 are attached to both ends of the appliance body, respectively, and the opposed lamp sockets 15, 15 are provided with straight tube fluorescent lamps. 16 are detachably attached. In addition, a discharge lamp stabilizer (not shown) and the like are built in between the fixture body 5 and the reflection plate 10.

The sensor light receiving unit 20 includes a sensor 22 having a sensor light receiving portion 23 at a tip for detecting brightness, a sensor control circuit (not shown) for controlling the sensor,
A sensor light receiving unit 23 provided at the tip of the sensor is disposed facing the housing lower surface opening 26.

[0007] The sensor light receiving unit 20 is integrally connected and fixed to an end face of the instrument body 5 by a method not shown. Note that the lighting fixture 1 and the sensor light receiving unit 20 are electrically connected by a lead wire (not shown).

3 (B) and 3 (C) show a sensor light receiving unit separately mounted type, and FIG. 3 (B) shows a box-shaped sensor light receiving unit. This sensor light receiving unit 20b is derived from an end face of the lighting equipment 5. Electrically connected by a pair of lead wires,
The sensor light receiving unit 20b can be installed on a ceiling or the like, which is a mounting surface, away from the appliance main body 5.

FIG. 3C shows another sensor light receiving unit separately mounted type.
5a is formed in a cylindrical shape. The structure is the same as that of FIG. 3B except that the outer shape of the sensor light receiving unit is different.

[0010]

As described above, in a lighting fixture having a conventional sensor light receiving unit, the sensor light receiving unit is installed outside the fixture body separately from the lighting fixture, and the sensor body of the fixture is used by the sensor of the sensor light receiving unit. There is no lighting fixture that has a sensor light receiving unit in which a sensor light receiving unit is arranged in a lighting fixture.

By arranging the sensor light receiving unit in the lighting fixture, there is a problem in that the intended lamp control effect cannot be obtained due to the influence of light emitted from the lamp attached to the fixture main body (hereinafter referred to as spontaneous lamp light). occured.

[0012] The present invention has been made in view of the above points, and has as its object to provide a lighting fixture that can achieve an intended lamp control effect.

[0013]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a lighting apparatus having a reflector body for reflecting light of a lamp and a back face of the reflector. A sensor light receiving unit disposed at the tip and having a sensor light receiving unit for detecting the brightness around the appliance main body and automatically controlling the brightness of a lamp attached to the appliance main body; The mounting hole formed in the reflection plate is provided with a cylindrical light-shielding tube having a light receiving / introducing hole portion at a tip thereof, protruding from the surface of the reflection plate.

According to a second aspect of the present invention, there is provided the lighting apparatus, wherein a front end of the light-shielding tube projects downward from a lower end of a lamp attached to the main body.

In the structure of the first aspect, a cylindrical light-shielding tube having a light-receiving / introducing hole at a tip is attached to a mounting hole formed in the reflecting plate, and a rear side of the device main body is provided at the back of the light-shielding tube. Since the sensor for detecting the brightness and automatically controlling the brightness of the lamp attached to the fixture body is arranged, the reliability of the lamp control is improved.

Further, in the structure according to the second aspect, the tip of the light-shielding tube projects downward from the lamp attached to the instrument body, and the light-shielding tube is attached to the mounting hole of the reflection plate.
Since the spontaneous lamp light of the lamp attached to the appliance main body is reflected on the surface of the light-shielding tube, a decrease in the lamp control effect due to the spontaneous lamp light is further prevented, and the reliability of the lamp control is further improved.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. Parts having the same configuration as the prior art will be described with the same reference numerals.

FIG. 1 shows a sensor light receiving unit according to the present invention mounted in a lighting fixture. The lighting fixture has a box-shaped fixture main body 5 which is opened downward and both ends of the fixture main body in a manner not shown. A pair of lamp socket mounting brackets 30 respectively mounted, and these lamp socket mounting brackets 3
0, the lamp sockets 15, 15 are mounted in parallel to face each other, and these lamp sockets 15, 15
Is provided so as to protrude below the reflector 10.
Numeral 0 is attached to the instrument main body 5 with screws (not shown). A straight tube fluorescent lamp 16 is detachably mounted between the lamp sockets 15.

At the center in the width direction of the reflection plate 10, a V-shaped reflection plate 10a is formed to protrude downward in a V-shape along the longitudinal direction, and is formed at the end of a ridge line 33 of the V-shaped reflection plate. The part is provided with a mounting hole 35. The lamp socket 15 is provided on both sides of the V-shaped reflector, and
At both ends of the device main body, they are arranged so as to protrude downward from the reflection plate.

The sensor light receiving unit 40 houses a sensor 22 having a sensor light receiving portion 23 at a lower end, a sensor control circuit (not shown) for controlling the sensor 22, and these sensors and a sensor control circuit. And a housing 41 to be attached. Note that the sensor control circuit (not shown) is housed in an internal space of the housing 41 by a method (not shown). Further, a sensor lead wire 43 connected to the lamp 16 or the like from the housing 41 is provided to be led out.

A sensor light receiving unit 40 in which a sensor light receiving portion 23 provided at the tip of the sensor 22 is disposed so as to face a mounting hole 35 formed in the reflecting plate 10 is mounted on the lower surface side of the center of the lamp socket mounting bracket 30. And V
It is arranged on the back side of the character-shaped reflection plate 10a. As the sensor 22, an illuminance sensor for detecting brightness, a human sensor for detecting infrared rays emitted from a human body, and the like are used.

Straight tube fluorescent lamp 1 used for lighting equipment
In No. 6, light emission of the lamp is weaker at the end side (near the filament) than at the center of the lamp. Therefore, in order to dispose the sensor of the sensor light receiving unit at a position that is hardly affected by the self-emission of the lamp, the sensor is provided at the longitudinal end of the lighting fixture.

The sensor light receiving unit 40 includes a lamp socket mounting bracket 3 to which the lamp socket 15 is mounted.
By mounting the lamp at 0, the lamp is disposed at the end (near the filament). In addition, this lighting fixture
Since the lamps are arranged in parallel, a position that is not easily affected by the self-emission of each lamp, that is, a V-shape located at the end of the lamp (near the filament) and in the middle of the two lamps It was provided on the ridgeline of the reflector.

As described above, the mounting hole 35 is formed at the ridgeline of the V-shaped reflector and at the end of the lamp (near the filament), and the sensor 22 is provided above the mounting hole facing the mounting hole. The sensor is attached to the housing such that the sensor light receiving unit 23 of the sensor is arranged to face the attachment hole 35. Further, the mounting hole is formed in a size suitable for detecting the brightness or the like of a place where the lighting fixture is mounted by the sensor light receiving portion of the sensor.

When the mounting hole 35 formed in the reflector is used as a light receiving / introducing hole for detecting the brightness around the instrument body, the lamp 16 is turned on and the sensor 22 controls the brightness of the lamp. Since the sensor light receiving portion 23 of the sensor is disposed on the back surface side of the mounting hole as a light receiving and introducing hole formed in the reflector, it is easily affected by the brightness of the spontaneous lamp light.

For this reason, the spontaneous lamp light is transmitted to the sensor light receiving section 2.
3, a phenomenon occurs in which the lamp is controlled to a brightness different from the brightness of the place where the user actually exists.

Therefore, in order to reduce the influence of the spontaneous lamp light, a trumpet-shaped light-shielding cylinder 45 expanded toward the tip is attached to a mounting hole 35 formed in the reflector. In addition, a light receiving / introducing hole 46 for detecting the brightness around the instrument body is provided at the tip of the light shielding tube 45. Specifically, a pair of locking claws (not shown) provided at the rear end of the trumpet-shaped light shielding cylinder 45
Is fitted into the mounting hole 35 from below the mounting hole 35, and the sensor light receiving unit 23 is located at the back of the light-shielding tube, so that it is hardly affected by the spontaneous lamp light.

Therefore, even if the lamp is turned on and the brightness of the lamp is controlled by the sensor, the difference from the brightness of the place where the user is present is reduced. In addition, by changing the length of the light-shielding tube 45, the influence of the spontaneous lamp light can be easily adjusted.

Further, as shown in FIG. 2, by disposing the front end portion 47 of the light shielding tube 45 below the lower end portion AA of the lamp, the influence of the spontaneous lamp light is further reduced.
Further, since the front end portion 47 of the light-shielding tube 45 is disposed below the lower end portion AA of the lamp, the spontaneous lamp light of the lamp is reflected on the outer surface of the light-shielding tube 45, so that it is less affected by the spontaneous lamp light. Therefore, the light-shielding tube 45 and the sensor light receiving unit 40 do not have to be arranged at the end of the lamp.

Further, by making the inner surface 45b of the light-shielding tube black and the outer surface 45c of the same color as the paint color of the reflector or white, the reflected light entering the light-shielding tube is reduced, and the influence of the spontaneous lamp light is reduced. It becomes even more difficult to receive.

Further, by using a trumpet-shaped light-shielding cylinder which is expanded toward the front end, it is possible to detect the brightness of the lower surface area of the sensor light receiving portion as widely as possible. This is because the area of the light receiving / introducing hole portion 46 can be widened by forming the trumpet shape.

As a result, it is possible to control the lamp in accordance with the brightness of the place where the user actually exists.

The operation of the above embodiment will be described.

A cylindrical light-shielding cylinder having a light-receiving / introducing hole at the tip is attached to a mounting hole formed in the reflector, and the brightness around the instrument body is detected at the back of the light-shielding cylinder to attach to the instrument body. Since the sensor for automatically controlling the brightness of the lamp is arranged, a decrease in the lamp control effect due to the spontaneous lamp light of the lamp attached to the fixture body is prevented, and the reliability of the lamp control is improved.

Next, the tip of the light-shielding tube is projected outward from the lamp attached to the fixture body, and the light-shielding tube is attached to the mounting hole of the reflection plate. Since the light is reflected by the outer surface of the light-shielding tube, a decrease in the lamp control effect due to the spontaneous lamp light is further prevented, and the reliability of the lamp control is further improved. In addition, by changing the length of the light-shielding tube, the effect of the spontaneous lamp light can be easily adjusted. Further, by using a trumpet-shaped light-shielding cylinder that is expanded toward the front end, it is possible to detect the brightness of the lower surface area of the sensor light receiving unit as widely as possible.

Further, by setting the color inside the light-shielding tube to black, the reflectance of light inside the light-shielding tube is reduced, and the actual illuminance under the sensor can be detected more accurately. In addition, by making the color of the outer surface of the light-shielding tube white or the same color as the reflection plate, it is possible to eliminate the uncomfortable feeling of mounting the light-shielding tube,
A lighting fixture having an excellent design can be provided.

Further, since the sensor light receiving unit is built in between the reflector and the tool body, it is not necessary to connect the sensor light receiving unit and the tool body outside the tool as in the prior art. It is possible to reduce the construction work that does not take place.

A mounting hole formed in the reflection plate is used as a sensor light receiving hole, a sensor is arranged opposite to the sensor light receiving hole, and a sensor light receiving unit including the sensor and the like is arranged on the back side of the reflection plate. A lighting fixture is used as a standard fixture, and a light-shielding cylinder is attached to a mounting hole formed in the reflection plate. A sensor is disposed so as to face a rear end opening of the light-shielding cylinder. In the case where a lighting fixture which is arranged on the back side of the plate and improves the reliability of the lamp control is a high-grade fixture, a mounting hole formed in the reflector is:
The standard device has a function as a sensor light receiving hole, and the high-grade device has a function as a mounting hole for attaching the light-shielding tube. It is possible to reduce construction costs at low cost.

[0039]

As described above, according to the first aspect of the present invention, the sensor light receiving unit is placed in the reflecting plate facing the mounting hole formed in the reflecting plate mounted on the instrument body. In addition to the mounting, a light-shielding tube is attached to the mounting hole, making it less susceptible to spontaneous lamp light from the lamp mounted on the fixture body. The performance is improved.

Further, since the sensor light receiving unit is built in between the reflector and the tool body, it is not necessary to connect the sensor light receiving unit and the tool body outside the tool as in the prior art. It is possible to reduce the construction work that does not take place.

According to the second aspect of the present invention, the distal end of the light-shielding tube is disposed so as to protrude downward from the lamp attached to the fixture body, so that the effect of spontaneous lamp light is further reduced. As a result, the lamp control effect can be further reduced, and the lamp control reliability can be further improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the overall configuration of a lighting fixture according to a first embodiment of the present invention.

FIG. 2 is a side cross-sectional view showing a state where the light shielding tube is attached to the reflector according to the embodiment.

FIG. 3 shows a lighting device according to the prior art, in which (A)
3 is a perspective view showing a sensor light receiving unit integrated type. (B)
(C) is a perspective view showing a sensor light receiving unit separate type.

[Explanation of symbols]

 5: instrument body, 10: reflector, 16: lamp (straight tube fluorescent lamp), 23: sensor light receiving section, 35: mounting hole formed in the reflector, 40: sensor light receiving unit, 45: light shielding cylinder, 46 ... Receiving light introduction hole, 47 ... The tip of the light shielding tube.

Claims (2)

[Claims] 1. An instrument body having a reflector for reflecting light of a lamp, and a sensor light receiving portion disposed on the back side of the reflector and detecting the brightness around the instrument body at a tip thereof, the instrument body has A sensor light receiving unit for automatically controlling the brightness of the mounted lamp; and a mounting hole formed in the reflection plate facing the sensor light receiving portion, a cylindrical shape having a light receiving introduction hole at a tip end. A lighting device, wherein a light shielding tube is provided so as to protrude from a surface of the reflection plate. 2. The lighting device according to claim 1, wherein a tip portion of the light-shielding tube projects downward from a lower end portion of a lamp attached to the device main body.