JPH0492307A - Lighting device - Google Patents

Abstract

PURPOSE:To allow the detecting range of a sensor to be the whole of an area above a photo axis line between the components of the sensor by disposing the projector of the photo electric sensor and a light receiver receiving photo signals from the projector at one side end projected section and at the other side end projected section respectively so as to be faced to each other over an axial line which is in parallel with the longer direction of a lighting device. CONSTITUTION:A main power supply switch 14 is disposed on the lower surface of a lighting equipment main body 13, and side covers 15 at the both ends of the main body are constituted to be projected forward, the projector 16 of a photo-electric sensor and a light receiver 17 are disposed at one of the side covers 15 and at the other respectively, so that a detecting photo axis 18 is thereby in parallel with the lighting equipment main body 13 while being faced to each other. Furthermore, in order that that the projector 18 and the light receiver 17 of the photo-electric sensor can be moved up and down, each side cover 15 at the right and left sides is divided into a side cover 15a and a side cover 15b, so that each side cover 15a is thereby rotated around a rotating shaft 22. In addition, an opaque panel 20 is provided for the front surface of the lighting equipment 13 to prevent the photo-electric sensor from being erroneously operated because of the beams of light from a lamp 19.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a lighting device.

2. Description of the Related Art As shown in FIG. 6, a conventional lighting device of this type is equipped with a reflective photoelectric sensor 2, which is a light emitter and a light receiver that are integrally arranged side by side, on a certain part of a lighting fixture 1. By bringing an object to be detected, such as a human hand, close to the front of the sensor, the light signal from the projector is reflected, and the light receiver detects the reflected wave and detects the ○N of the lighting equipment. , OFF was performed.

The operation of the conventional example will be explained below with reference to the drawings.

FIG. 7 shows the detection range of a conventional sensor. Lighting equipment 1
The reflective photoelectric sensor 2 attached to the lighting fixture 1 has a detection range 3 in the vertical direction of the lighting fixture 1, and when an object to be detected, such as a human hand, enters the detection range 3, the circuit block diagram shown in FIG. As shown, a light beam 6 projected from the light projecting section 4 of the sensor 2 is reflected by the object to be detected 6 and enters the light receiving section 7, and the detection signal is transmitted to the latch section 8, which drives a relay or the like and a lamp 9.
The lighting circuit 1o causes the light to blink. Note that even if the object to be detected is no longer within the detection range and the detection signal is no longer transmitted to the latch section 8, this state is maintained by the latch section 8 until the next detection signal is input.

Problems to be Solved by the Invention With such a conventional configuration, the detection range of the sensor cannot be widened, and as shown in the conventional installation example in FIG.
When the length of the lighting fixture 1 installed above the sink 11 or at the bottom of the hanging cabinet 12 is long and the sensor 2 is located at the end, the person 13 moves to the vicinity of the sensor 2 in order to operate the lighting fixture 10 to turn on and off. and sensor 2 must be detected.
Since it is fixed, it can be difficult to use depending on the installation height and the height of the person using it.

In addition, the reflective photoelectric sensor 2 has different detection distances depending on the color and reflectance of the object to be detected.For example, even at a distance that cannot be detected by a human hand, it can be detected by an object with a high reflectance such as a white plate. There was a problem in that it caused malfunctions such as lighting equipment blinking.

The present invention is intended to solve these problems, and aims to expand the detection range of a sensor and prevent malfunctions due to differences in detected objects.

Means for Solving the Problems In the lighting device of the present invention, both ends of the lighting device are protruded from the front surface, and a floodlight is provided on one of the side end protrusions, and a signal from the floodlight is received on the other side of the side protrusion. and a light receiver arranged to face each other on an axis parallel to the longitudinal direction of the lighting device,
The light emitter and the light receiver are configured to be movable in the vertical direction, and the photoelectric sensor detects interruption of a signal from the light emitter that enters the light receiver, and performs a latching operation on a switching element of the lighting equipment to perform a blinking operation. This is something that can be done.

According to the above-mentioned structure, the present invention has a structure in which firstly, both end portions of the lighting device are protruded from the front surface, and a photoelectric sensor light source is attached to one of the side end protruding portions, and a light source of a photoelectric sensor is attached to the other side end protruding portion. By arranging the field receivers that receive the signal so as to face each other on the axis parallel to the longitudinal direction of the lighting device, the detection range of the sensor that performs the blinking operation of the elongated lighting device extends to both ends of the device. Since it covers the entire area on the optical axis between the sensors protruding from the front, it can be expanded horizontally, and since the sensor part can be moved vertically, the detection range can be set according to the installation height and the height of the user. I can do it. Second, in this configuration, the detection method for the object to be detected is such that the object to be detected blocks the light rays projected from the sensor's emitter and reflected by the receiver. Differences in color and reflectance have no effect on objects as long as they block light rays.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.

In FIGS. 1 and 2, 13 is a lighting equipment main body, a main power source 14 is arranged on the lower surface of this lighting equipment main body 13, and side covers 15 at both ends are configured to protrude from the front of the main body 13, The light emitter 16 of the photoelectric sensor is mounted on one side of the side cover 15, the light receiver 17 is mounted on the other side, and the detection optical axis 1 is mounted on the side cover 15.
The left and right side covers 16 are arranged to face each other so that they are parallel to the longitudinal direction of the lighting fixture body 13, and to make the emitter 16 and receiver 17 of the photoelectric sensor vertically movable. The side cover 15a is divided into covers 15a and 15b, and rotates around a rotating shaft 22. Further, an opaque panel 2o is provided on the front surface of the lighting fixture 13 to prevent malfunction of the photoelectric sensor due to the light beam of the lamp 19.

The operation of the above configuration will be explained below. Assume that the main power switch 14 is now ON and the lighting is not lit.

FIG. 3 shows the detection range of the sensor of the present invention. Lighting equipment 1
Light emitting part 16 and light receiving part 1 of the photoelectric sensor attached to 3
Due to γ, the sensor has a detection range 21 parallel to the lighting fixture 13. The detection method is as shown in the circuit block diagram in FIG. A method is used to transmit this as a detection signal to the latch unit 8, which then drives a relay etc.
is operated by the lighting circuit 10. Note that even if the object to be detected disappears and the light receiving section receives the light beam from the light projecting section, this lighting state is maintained by the latch section 8. Next, when the object to be detected enters the detection range 21 again, the light is turned off by the same operation as described above.

According to the above configuration, when the lighting device of the present invention is installed at the bottom of the hanging door 2 above the sink 11 in the kitchen as shown in FIG.
3, and as long as the width is within reach, the lighting fixture 13 can be operated to blink, and there is no need to move near a specific location (sensor) on the lighting fixture as in the conventional example. By rotating the side cover 15a around the rotating shaft 22 and moving the detection range 21 up and down, it is possible to set the detection range according to the installation height, the user's height, etc.

Furthermore, as long as the object to be detected blocks the light beam, there is no difference in detection ability even if the object has a different color or reflectance.

Effects of the Invention As is clear from the description of the embodiments, the present invention provides the following effects.

First, the detection range is approximately the width of the lighting fixture, and since it can be moved in the vertical direction, the range in which the lighting fixture can be blinked can be expanded.

Second, false detection can be prevented because there is no difference in detection ability due to differences in color or reflectance of the object to be detected.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a lighting device showing one embodiment of the present invention, FIGS. 2(a) and 2(b) are a side view and a plan view of the same, and FIG.
Figures (a) and (b) are side and plan views showing the detection range of the sensor, Figure 4 is a circuit block diagram, Figure 5 is a perspective view showing an example of the same installation, and Figure 6 is a conventional lighting system. Figure 7 (a), (b), and (C) are a perspective view of the exterior appearance of the device;
The figure is a block diagram of the same circuit, and FIG. 9 is a perspective view showing an example of the same installation. 13...Lighting equipment body, 16...Light emitter, 17...Light receiver. Name of agent Patent attorney Shigetaka Awano and 18 others ``A Figure Figure Figure Figure Figure (cL) Figure Figure Figure Figure

Claims (1)

[Claims] It consists of a light emitter that emits an optical signal of a certain level and a light receiver that receives the optical signal, and has switching means that performs a latching operation of a switching element to perform a blinking operation in response to the interruption of the optical signal, The projector is disposed on one side of a side protrusion that protrudes forward, and the light receiver is disposed on the other side of the protrusion, facing each other on an axis parallel to the longitudinal direction of the lighting device. 1. A lighting device in which a light emitter and a light receiver of the photoelectric sensor are movable in a vertical direction.