JPH0492306A - Lighting device - Google Patents

Abstract

PURPOSE:To enlarge the detecting range of a sensor as well as to prevent the occurrence of erroneous operations due to the detection of a different article by detecting the interruption of signals from a projector from which signals are to go into the light receiving section of a photo-electric sensor, actuating the switching element of a lighting equipment so as to be conditioned to latching operations, and thereby starting flash lighting. CONSTITUTION:The detecting range 21 of a sensor is secured in parallel with a lighting equipment 13 by the projector section 16 and the light receiving section 17 of a photo-electric sensor fitted onto the lighting equipment 13. It is adapted as a detecting method that the existence of no light in the light receiving section 17 is transmitted to a latch section 8 as a detecting signal when the beam of light from the projector section 16 is interrupted by a detected article such as human hands inserted in the detecting range 21, following which, a lamp is switched on by a light switching circuit 10 with a relay and the like driven. In this case, even if the beam of light from the projector is received by the light receiving section with the detected article removed, a lighting condition is kept on by the latch section 8. In the second place, when the detected article goes in the detecting range 21 again, a light is turned out by means of similar operations.

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 has a reflective photoelectric sensor 2, which is a light emitter and a light receiver arranged side by side, attached to a certain part of a lighting fixture 1. When an object to be detected, such as a person's hand, approaches the front of the sensor, the optical signal is reflected, and the light receiver detects the reflected wave and turns on/off the lighting equipment. It was something.

The operation of the conventional example will be explained below using 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, the light beam 5 projected from the light projecting part 4 of the sensor 2 is reflected by the object to be detected 6 and enters the light receiving part 7, and the detection signal is transmitted to the latch part 8, which drives a relay etc. and a lamp 9.
is blinked by the lighting circuit 1o. 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 In such a conventional configuration, firstly, 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 equipment 1 installed at the bottom of the lighting equipment 1 is long and the sensor 2 is located at the end, the person 13 needs to touch the sensor 2 to perform the blinking operation of the lighting equipment 1.
The problem was that it had to be moved nearby and detected.

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

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 The lighting device of the present invention has a projecting form on both curved surfaces of a lighting equipment main body, with a photoelectric sensor projecting light on one of the side end protrusions, and a light projector on the other of the side end projecting parts. and a light receiver that receives a signal of the illumination device are disposed facing each other on an axis parallel to the longitudinal direction of the illumination device, and detects the interruption of the signal from the projector that enters the light receiver of the photoelectric sensor, and The device's switching element is latched to perform a blinking operation.

According to the above-mentioned configuration, the present invention first projects from the front of both ends of the lighting equipment, and a light emitter of a photoelectric sensor is attached to one of the side end protrusions, and a signal from the floodlight is transmitted to the other side of the side end protrusion. The detection range of the sensor that performs the blinking operation of the elongated lighting equipment by arranging the light receiver and the light receiver facing each other on the axis parallel to the longitudinal direction of the lighting device is between the sensors protruding from the front of both ends of the equipment. Because it covers the entire area on the optical axis, it expands horizontally. Second, in this configuration, the detection method for the detected object is to detect the detected object by blocking the light beam projected from the sensor's light emitter and received by the light receiver. Differences in color 9 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, reference numeral 13 denotes a lighting equipment main body, and a main power switch 14 is arranged on the lower surface of this lighting equipment main body 13. Also, side covers 15 at both ends are configured to protrude from the main body 13 to the front side. The light emitter 16 of the photoelectric sensor is placed on one side of the cover 16, the light receiver 17 is placed on the other side, and the detection optical axis 1
8 are arranged facing each other parallel to the longitudinal direction of the lighting fixture body 13, and the lamps 1
An opaque panel 20 is provided to prevent the photoelectric sensor from malfunctioning due to the light rays.

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
The sensor 7 has a detection range 21 parallel to the lighting fixture 13. The detection method is as shown in the circuit block diagram of FIG. A method is adopted in which the detection signal is transmitted to the latch unit 8, and then a relay or the like is driven to cause the lamp 9 to be turned on 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 above.

According to the above configuration, as shown in FIG.
When the lighting device of the present invention is installed at the bottom of the hanging cabinet 12 above the sink 11 in the kitchen, firstly, if the detection range is approximately the width of the lighting fixture 13 and 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) of the lighting fixture as in the conventional example.

Second, if the object to be detected is something that blocks light, it is a color.

Even if the reflectance is different, there is no difference in detection ability.

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 the range in which the lighting fixture can be blinked can be expanded.

Second, there is no difference in detection ability due to differences in color 9 reflectance of the object to be detected.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a lighting device showing an embodiment of the present invention, FIG. 2 is a bottom plan view of the lighting device, and FIG. 3 (-)Φ) is a front view and a plan view showing the detection range of the sensor. Figure 4 is a block diagram of the same circuit, Figure 5 is a perspective view showing an example of the same installation, Figure 6 is an external perspective view of the conventional lighting device, and Figures 7 (a), (b), and (C) are the detection range of the same sensor. A plan view showing. Side view and front view, Figure 8 is a block diagram of the same circuit, Figure 9
The figure is a perspective view showing the same installation example. 13...Lighting equipment body, 16...Light emitter, 17...Light receiver. Name of agent: Patent attorney Shigetaka Awano and one other person (α)

Claims (1)

[Claims] A switching means is a non-contact photoelectric sensor that is composed of a projector that emits an optical signal of a certain level and a receiver that receives the optical signal, and that performs a latching operation of a switching element in response to interruption of the optical signal, and performs a blinking operation. , a lighting fixture main body having a shape in which both left and right end portions protrude forward, the projector is attached to one of the side end protrusions, the light receiver is attached to the other of the side end protrusions, and the lighting device is connected to each other. Lighting devices arranged facing each other on axes parallel to the longitudinal direction of the main body.