JP2006127897A - Light-emitting diode lighting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light-emitting diode lighting system using a light-emitting diode hardly needing replacement of a light source and capable of performing environmental illumination as well as detection of movement of a human body with one sensor. <P>SOLUTION: The light-emitting diode lighting system is provided with a light-emitting diode 13; an illumination sensor 2 detecting reflection light from an object receiving irradiation of the light-emitting diode 13 as well as environment light and outputting an illumination detecting signal according to strength of each light; and a control part 6, maintaining turned-off light of the light-emitting diode 13 if a level of the illumination detecting signal based on the environment light from the illumination sensor 2 exceeds a given threshold value, and making the light-emitting diode flicker at a given period if it is below the threshold value, and at the same time, when a level of the illumination detecting signal based on the reflection light from the illumination sensor 2 is fluctuated at flickering, transits a flickering period of the light-emitting diode 13 to an extent where a constant illumination is obtained within an irradiation range of the light-emitting diode, while on the other hand, when the fluctuation flats out, returns the diode 13 to a flickering state before that transition. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a light-emitting diode illuminating device having a function of automatically turning on a person or other moving object in a dark environment such as at night.

  Until now, various lighting devices having a function of detecting when a person approaches at night and automatically turning it on have been provided. This type of lighting device includes a light source that irradiates light, an illuminance sensor that detects ambient illuminance, a moving object detection device that detects a moving object such as the passage of a person, and a control unit that controls these units. When a person passes when the ambient illuminance is low, such as at night, this is detected by a moving object detection device, and the light source is automatically turned on.

  In the above-described conventional illumination device, an incandescent bulb as a light source, a photoconductive element such as CdS as an illuminance sensor, and a pyroelectric element that detects infrared rays emitted from a person as a moving object detection device. There were many.

In recent years, a technique has been reported in which a light-emitting diode having a longer life than an incandescent bulb is used as a light source, and the replacement of the light source is almost unnecessary (see, for example, Patent Document 1). This lighting device using a light emitting diode turns on the light emitting diode when a person's movement is detected when the ambient illuminance is dark, such as at night, and then turns off when no person is detected.
Japanese Patent Laid-Open No. 11-45609 (pages 6 to 8, FIGS. 1 to 14)

  However, the light-emitting diode illuminating device described in Patent Document 1 requires separate sensors for detecting the ambient illuminance and detecting the movement of the person, leading to an increase in manufacturing cost. Further, since it is necessary to take a light shielding measure so that the illuminance sensor is not affected by the indirect light from the light emitting diode, there is a problem that the structure becomes complicated and the manufacturing cost increases.

  The present invention solves the above-described problems, and provides a light-emitting diode illuminating device that uses a light-emitting diode that does not require replacement of a light source and that can detect ambient illuminance and a moving object with a single sensor. With the goal.

  To achieve the above object, the light-emitting diode illuminating device of the present invention detects a light-emitting diode, reflected light from an object irradiated with the light-emitting diode, and ambient light, and illuminance according to the intensity of each light. An illuminance sensor that outputs a detection signal, and when the level of the illuminance detection signal based on the ambient light from the illuminance sensor exceeds a predetermined threshold, the light emitting diode is kept off, and when the level is below the threshold, When the light emitting diode blinks at a predetermined cycle, and the level of the illuminance detection signal based on the reflected light from the illuminance sensor at the time of the blinking varies, the blinking cycle of the light emitting diode is A control unit that transitions the blinking cycle to such an extent that a certain illuminance can be obtained in the irradiation range, and returns to the blinking state before the transition when the fluctuation disappears, It is provided.

  According to the present invention, the ambient light is detected by the illuminance sensor, and the illuminance detection signal corresponding to the ambient light is compared with the predetermined threshold value to determine the brightness of the ambient illuminance. When it is determined that it is a dark environment such as at night, the light emitting diode is blinked at a predetermined cycle in order to detect the moving state of the object in the dark environment. At the time of this flashing, the level of the illuminance detection signal when the light emitting diode is turned on is stored, and when the level fluctuates, the reflected light from the object irradiated by the light emitting diode is specifically reflected in the illuminance. When the sensor receives and the level rises, it is assumed that an object is present in the irradiation range of the light emitting diode, and the blinking cycle of the light emitting diode is changed to a cycle at which sufficient illuminance is obtained in the irradiation range. As a result, the irradiation range is brightly illuminated by the light emitting diode. During this time, the light-emitting diode continues to blink, so that the variation in the level of the illuminance detection signal based on the reflected light from the object is continuously detected. After that, when it is detected that the level has returned to the original level, it is determined that the object has gone out of the irradiation range of the light emitting diode, and it is no longer necessary to make the light emitting diode function as an illumination lamp. Is returned to the blinking state before the transition. Thus, in the present invention, it is possible to detect both the environmental illuminance and the moving state of the object with one illuminance sensor.

  The light-emitting diode illuminating device of the present invention includes a first light-emitting diode that emits visible light, a second light-emitting diode that emits ultraviolet light, and reflected light from an object irradiated by these light-emitting diodes. An illuminance sensor that detects ambient light and outputs an illuminance detection signal corresponding to the intensity of each light, and the level of the illuminance detection signal based on the ambient light from the illuminance sensor exceeds a predetermined threshold value While the light emitting diode of 1 is kept off, the second light emitting diode blinks at a predetermined period when the light emitting diode is below the threshold, and the illuminance detection signal based on the reflected light from the illuminance sensor at the time of blinking When the fluctuation occurs in the level of the first light emitting diode, the first light emitting diode is turned on or blinked at a cycle at which a constant illuminance is obtained. Characterized by comprising a control unit which turns off the over-de.

  According to the present invention, the ambient light is detected by the illuminance sensor, and the illuminance detection signal corresponding to the ambient light is compared with the predetermined threshold value to determine the brightness of the ambient illuminance. When it is determined that the environment is a dark environment such as nighttime, the second light emitting diode that emits ultraviolet light is blinked at a predetermined cycle in order to detect the moving state of the object in the dark environment. At the time of this blinking, the level of the illuminance detection signal when the second light emitting diode is turned on is stored, and when the level fluctuates, specifically, the object irradiated with the second light emitting diode When the illuminance sensor receives reflected light from the illuminance sensor and the level rises, the first light emitting diode is turned on or the illuminance is sufficient in the irradiation range, assuming that an object exists within the irradiation range of the first light emitting diode. Blinks with a period of about As a result, the irradiation range is brightly illuminated by the first light emitting diode. During this time, the second light emitting diode keeps blinking, so that the variation in the level of the illuminance detection signal based on the reflected light from the object is continuously detected. Thereafter, when it is detected that the level has returned to the original level, it is determined that the object has left the irradiation range of the light emitting diode, and illumination with the first light emitting diode is no longer necessary. Turns off. Thus, in the present invention, it is possible to detect both the environmental illuminance and the moving state of the object with one illuminance sensor. In addition, since a diode that emits ultraviolet light that is not detected by human eyes is used to detect an object in a dark environment, blinking of the light-emitting diode does not become an obstacle.

  The light emitting diode may be a bullet-type light emitting diode lamp.

  According to this configuration, it is possible to irradiate a long distance, increase the reflected light from the object, and enable stable detection.

  The light emitting diode may be a surface mount chip light emitting diode.

  According to this configuration, the light-emitting diode illuminating device can be reduced in size and can be illuminated over a wide range.

  Further, all the light emitting diodes may be disposed on the same substrate, and a light source lens may be disposed in parallel with the substrate, and the light source lens may be slidable in parallel with the substrate.

  According to this configuration, the irradiation direction from the light emitting diode can be easily adjusted by sliding the light source lens in parallel with the substrate.

  A detection lens may be provided on the same plane as the light source lens and integrally therewith.

  According to this configuration, the irradiation direction from the light emitting diode and the light receiving direction to the illuminance sensor can be adjusted simultaneously in the same direction.

  Since the light-emitting diode illuminating device of the present invention uses a light-emitting diode, the replacement of the light source is almost unnecessary, and the ambient illuminance and the moving object are detected by one illuminance sensor. Less production is required and production can be made at a lower cost.

  In addition, since a light shielding measure is not required to avoid the influence of indirect light from the light emitting diode to the illuminance sensor, the structure is simple.

  Embodiments of the present invention will be described below with reference to the drawings.

  A first embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is a schematic perspective view showing a configuration of a light-emitting diode illuminating device.

  This light-emitting diode illuminating device includes a light source unit 1 in which one light-emitting diode 13 is arranged on a substrate, an illuminance sensor 2 for detecting illuminance provided below the light source unit 1, and the light source unit 1 and the illuminance sensor 2. The lens substrate 3 on which the light source lens 4 and the detection lens 5 are mounted, and the control unit 6 provided below the illuminance sensor 2 and the lens substrate 3 are provided. Both the light source lens 4 and the detection lens 5 are condensing Fresnel lenses.

  The light-emitting diode illuminating device is embedded in the wall of the corridor, etc., and automatically lights up when a moving object such as a person passing by is detected at night, and has the function of illuminating the floor of the corridor brightly. . Although not shown, the light-emitting diode illuminating device has a power supply unit for obtaining a predetermined DC voltage from a commercial power supply.

  FIG. 2 is an enlarged view of the light source unit 1 of the light emitting diode illumination device.

  The light source unit 1 includes a substrate 14 and a single bullet-type light emitting diode lamp (hereinafter simply referred to as “light emitting diode”) 13 that emits visible light on the substrate 14. The bullet-type light emitting diode lamp refers to a light emitting diode having a configuration in which a light emitting diode element is enclosed in a synthetic resin, and two wires extend from the synthetic resin.

  FIG. 3 is a block diagram showing an electrical configuration of the light-emitting diode illuminating device.

  The illuminance sensor 2 includes a photodiode or a phototransistor, and detects both ambient light and reflected light of the light emitting diode 13 of the light emitting unit 1. An illuminance detection signal corresponding to the intensity of the ambient illuminance and the reflected light is received. Output to the control unit 6.

  The control unit 6 receives the illuminance detection signal from the illuminance sensor 2 and controls the light source unit 1. That is, in the control unit 6, a predetermined threshold is set for the illuminance detection signal based on the ambient light. The predetermined threshold is compared with the level of the illuminance detection signal from the illuminance sensor 2, and the level is detected. Is greater than the threshold, it is determined that the ambient illuminance is a bright environment, and if it is smaller, it is determined that the environment is a dark environment. In a bright environment, the control unit 6 turns off the light emitting diode 13. On the other hand, in the dark environment, the control unit 6 causes the light emitting diode 13 to blink at a predetermined period to be described in detail later and to detect the illuminance when the light emitting diode 13 is lit in order to detect the movement of the object. Store the signal level. Further, when the control unit 6 receives a signal from the illuminance sensor 2 having a level larger than the level of the stored illuminance detection signal, the reflected light from the object irradiated with the light emitting diode 13 by the illuminance sensor 2 is reflected. Since the light is received, it is determined that there is an object within the irradiation range of the light emitting diode 13, and the blinking cycle of the light emitting diode 13 is changed to a blinking cycle at which constant illuminance is obtained in the irradiation range of the light emitting diode 13. Make a transition. Specifically, for example, the light emitting diode 13 is blinked at a frequency of 60 Hz or more. When the light emitting diode 13 blinks at a frequency of 60 Hz or higher, it is recognized as continuous lighting by human eyes. Note that the set value of the threshold is arbitrary.

  Next, the operation of the light emitting diode illumination device will be described with reference to FIG.

  In a bright environment, the level of the illuminance detection signal from the illuminance sensor 2 exceeds a predetermined threshold value, so the control unit 6 determines that the environmental illuminance is a bright environment, and the light emitting diode 13 is turned on with no illumination required. Turn off.

  When the environmental illuminance decreases and the level of the illuminance detection signal from the illuminance sensor 2 eventually becomes equal to or less than a predetermined threshold, the control unit 6 determines that the environmental illuminance is a dark environment and detects an object. The light emitting diode 13 of the light source unit 1 is blinked at a cycle as shown in 4 (a). That is, the light-emitting diode 13 is controlled by the control unit 6 and is repeatedly turned on and off at a blinking cycle such that the lighting time is extremely shorter than the turn-off time. The control unit 6 determines the illuminance when the light-emitting diode 13 is turned on. The level of the detection signal is stored. At this time, the light emitting diode 13 appears to be lit darkly to human eyes.

  Here, when an object such as a person enters the irradiation range of the light emitting diode 13, the light emitted from the light emitting diode 13 is reflected by the object, and the reflected light is detected by the illuminance sensor 2. From the illuminance sensor 2, an illuminance detection signal corresponding to the detected intensity of the reflected light is sent to the control unit 6.

  In the control unit 6, since the level of the illuminance detection signal from the illuminance sensor 2 based on the reflected light is larger than the level of the stored illuminance detection signal, an object exists within the irradiation range of the light emitting diode 13. Judgment is made, and the blinking cycle of the light emitting diode 13 is changed to a blinking cycle at which constant illuminance is obtained in the irradiation range of the light emitting diode 13 as shown in FIG. As a result, the light emitting diode 13 repeats lighting and extinguishing in a blinking cycle such that both the lighting time and the extinguishing time are short, and the lighting time and the extinguishing time are equal. Looks like. That is, a constant illuminance can be obtained within the irradiation range of the light emitting diode 13.

  In order to obtain a certain illuminance, the blinking control of the light emitting diode 13 is not limited to the above example. For example, as shown in FIG. The lighting and extinguishing may be repeated at a blinking cycle that becomes longer.

  The operations described above are summarized in a list as shown in Table 1.

なお、上記の実施例では、暗環境下でのみ発光ダイオード１３を点滅させていたが、明環境下でも物体の検出を行うべく点滅させてもよく、その場合、照明装置を警報装置としても利用することができる。

In the above embodiment, the light-emitting diode 13 is blinked only in a dark environment. However, the light-emitting diode 13 may be blinked to detect an object even in a bright environment. In this case, the lighting device is also used as an alarm device. can do.

  As described above, the light-emitting diode illuminating device automatically blinks the light-emitting diode 13 automatically when a moving object such as a passing person is detected when the ambient illumination is dark such as at night, and blinks darkly otherwise. Since it is turned off, power consumption is reduced. Further, since the light-emitting diode illuminating device uses the light-emitting diode 13 having a long life as the light source unit 1, it is almost unnecessary to replace the light source. Furthermore, since the illuminance sensor 2 performs both detection of environmental illuminance and detection of a moving object, the number of parts can be reduced and manufacturing can be performed at a lower cost. In addition, although the light source unit 1 and the illuminance sensor 2 are arranged close to each other, a configuration that does not require a light shielding measure can reduce the manufacturing cost accordingly.

  A second embodiment of the present invention will be described with reference to FIGS.

  FIG. 5 is a schematic perspective view showing the configuration of the light-emitting diode illuminating device.

  The light-emitting diode illuminating device includes a light source unit 1 in which nine light-emitting diodes are arranged on the same substrate, an illuminance sensor 2 for detecting illuminance provided below the light source unit 1, and the light source unit 1 and the illuminance sensor 2. Are provided in parallel with the lens substrate 3 on which the light source lens 4 and the detection lens 5 are mounted, and the illuminance sensor 2 and the control unit 6 provided below the lens substrate 3.

  The light-emitting diode illuminating device is embedded in the wall of the corridor, etc., and automatically lights up when a moving object such as a person passing by is detected at night, and has the function of illuminating the floor of the corridor brightly. . Although not shown, the light-emitting diode illuminating device has a power supply unit for obtaining a predetermined DC voltage from a commercial power supply.

  FIG. 6 is an enlarged view of the light source unit 1 of the light emitting diode illumination device.

  The light source unit 1 includes a substrate 9, a second light emitting diode 8 that emits ultraviolet light provided at the center of the upper surface of the substrate 9, and the upper surface of the substrate 9 so as to surround the second light emitting diode 8 from the periphery. And eight first light-emitting diodes 7 that emit visible light. Both the first and second light emitting diodes 7 and 8 are bullet-type light emitting diode lamps, as in the first embodiment.

  The configuration of the light source unit 1 is not limited to the above-described example, and may be a configuration as shown in FIG. That is, the light source unit 1 includes a substrate 10 and a second light emitting diode as a surface mounted chip light emitting diode 11 that emits one ultraviolet light provided at the center of the upper surface of the substrate 10 and a first light emitting diode. The light-emitting diode 11 may be configured by eight surface-mounted chip light-emitting diodes 12 for illumination that emit visible light and are provided on the substrate 10 so as to surround the light-emitting diode 11 from the periphery. Here, the surface-mounted chip light-emitting diode refers to a light-emitting diode in which terminals for surface mounting are provided on the back and side surfaces instead of wires. Thus, when the surface-mounted chip light-emitting diodes 11 and 12 are used for the first and second light-emitting diodes, the surface-mounted chip light-emitting diode has a small shape, so that the light source unit 1 can be miniaturized. In addition, since the irradiation angle is wider than that of the above-described bullet-type light emitting diode lamp, an object can be detected in a wide range and the illumination range is wide.

  The electrical configuration of the light-emitting diode illuminating device is the same as that of the first embodiment, and is as shown in the block diagram of FIG. Hereinafter, each part will be described with reference to FIG.

  The illuminance sensor 2 includes a photodiode or a phototransistor, and detects both ambient light and reflected light of the second light emitting diode 8 in the light emitting unit 1, and illuminance detection corresponding to the intensity of the illuminance and the reflected light. The signal is output to the control unit 6.

  The control unit 6 receives the illuminance detection signal from the illuminance sensor 2 and controls the light source unit 1. That is, in the control unit 6, a predetermined threshold is set for the illuminance detection signal based on the ambient light, and the predetermined threshold is compared with the level of the illuminance detection signal from the illuminance sensor 2, and the level is detected. Is greater than the threshold, it is determined that the ambient illuminance is a bright environment, and if it is smaller, it is determined that the environment is a dark environment. In a bright environment, the control unit 6 turns off both the first and second light emitting diodes 7 and 8. On the other hand, in the dark environment, the control unit 6 causes the second light emitting diode 8 to blink at a predetermined cycle, which will be described in detail later, and the second light emitting diode 8 is turned on in order to detect the movement of the object. Stores the level of the illuminance detection signal when Further, when the control unit 6 receives a signal of a level larger than the stored level of the illuminance detection signal from the illuminance sensor 2, the control unit 6 receives from the object irradiated with the second light emitting diode 8 by the illuminance sensor 2. Since the reflected light is received, it is determined that there is an object within the irradiation range of the first light emitting diode 7, and the first light emitting diode 7 is turned on or blinked. When blinking the 1st light emitting diode 7, it blinks with the frequency of 60 Hz or more, for example. When the first light-emitting diode 7 blinks at a frequency of 60 Hz or higher as described above, it is recognized as continuous lighting by human eyes.

  Next, the operation of the light emitting diode illumination device will be described with reference to FIG.

  In a bright environment, the level of the illuminance detection signal from the illuminance sensor 2 exceeds a predetermined threshold value, so the control unit 6 determines that the ambient illuminance is a bright environment, and the lighting is unnecessary and the first and third The two light emitting diodes 7 and 8 are both turned off.

  When the environmental illuminance decreases and the level of the illuminance detection signal from the illuminance sensor 2 eventually becomes equal to or less than a predetermined threshold, the control unit 6 determines that the environmental illuminance is a dark environment and detects an object. The second light emitting diode 8 of the light source unit 1 is blinked at a cycle as shown in FIG. That is, the second light emitting diode 8 is controlled by the control unit 6 and is repeatedly turned on and off at a constant cycle, for example, a blinking cycle of 1/60 seconds or less, and the control unit 6 is configured as shown in FIG. The level of the illuminance detection signal when the second light emitting diode 8 is lit is stored. At this time, since the second light emitting diode 8 emits ultraviolet light, the blinking state cannot be seen by human eyes.

  Here, when an object such as a person enters the irradiation range of the second light emitting diode 8, the light emitted from the second light emitting diode 8 is reflected by the object, and the reflected light is detected by the illuminance sensor 2. From the illuminance sensor 2, an illuminance detection signal corresponding to the detected intensity of the reflected light is sent to the control unit 6.

  In the control unit 6, the level of the illuminance detection signal from the illuminance sensor 2 based on the reflected light is larger than the level of the stored illuminance detection signal as shown in FIG. The light emitting diode 7 is turned on or blinked. In the case of blinking, as shown in FIG. 7D, lighting and extinguishing are repeated at a constant cycle, for example, a frequency of 60 Hz or more. As described above, when the first light-emitting diode 7 blinks at a frequency of 60 Hz or more, it appears to be lit to human eyes. That is, a constant illuminance can be obtained within the irradiation range of the light emitting diode 7.

  The operations described above are summarized in a list as shown in Table 2.

なお、上記の実施例では、暗環境下でのみ第２の発光ダイオード８を点滅させていたが、明環境下でも物体の検出を行うべく点滅させてもよく、その場合、照明装置を警報装置としても利用することができる。また、暗環境下で第１の発光ダイオード７を点滅させているときに第２の発光ダイオード８を消灯させ、第１の発光ダイオード７の反射光のレベルの変動に基づいて物体の検知を行うようにしてもよい。

In the above embodiment, the second light-emitting diode 8 is blinked only in a dark environment. However, the second light-emitting diode 8 may be blinked to detect an object even in a bright environment. Can also be used. Further, when the first light emitting diode 7 is blinking in a dark environment, the second light emitting diode 8 is turned off, and an object is detected based on the fluctuation in the level of reflected light of the first light emitting diode 7. You may do it.

  As described above, the light-emitting diode illuminating device automatically turns on or blinks the first light-emitting diode 7 when detecting a moving object such as a person passing when the ambient illumination is dark such as at night, otherwise, Since it is turned off, power consumption is reduced. Moreover, since the light-emitting diode illuminating device uses a light-emitting diode having a long life as the light source unit 1, it is almost unnecessary to replace the light source. Furthermore, since both the detection of the environmental illuminance and the detection of the moving object are performed by the single illuminance sensor 2, the number of components can be reduced and the manufacturing can be performed at a lower cost. In addition, although the light source unit 1 and the illuminance sensor 2 are arranged close to each other, a configuration that does not require a light shielding measure can reduce the manufacturing cost accordingly.

  Next, adjustment of the irradiation direction of the light source unit 1 and the light receiving direction of the illuminance sensor 2 of the light emitting diode illumination device will be described with reference to FIG.

  Both the light source lens 4 and the detection lens 5 are condensing Fresnel lenses. The substrate 3 on which the light source lens 4 and the detection lens 5 are mounted is arranged in parallel with the substrate 9 and the illuminance sensor 2 of the light source unit 1 and is configured to be slidable in parallel with the substrate 9.

  FIG. 8A shows a case where the irradiation direction of the light source unit 1 and the light receiving direction of the illuminance sensor 2 are horizontal. In this case, the light-emitting diode illuminating device sets its front front as an object detection range and illumination irradiation range.

  FIG. 8B shows a case where the irradiation direction of the light source unit 1 and the light receiving direction of the illuminance sensor 2 are simultaneously inclined upward by sliding the substrate 3 upward with respect to the substrate 9. In this case, the light-emitting diode illuminating device has an object upper detection range and an illumination irradiation range in front of the light emitting diode illumination device.

  In FIG. 8C, contrary to the case of FIG. 8B, the irradiation direction of the light source unit 1 and the light reception direction of the illuminance sensor 2 are simultaneously changed by sliding the substrate 3 downward with respect to the substrate 9. The case where it is inclined downward is shown. In this case, the light-emitting diode illuminating device sets the object diagonally lower side as the object detection range and the illumination irradiation range.

It is a schematic perspective view which shows Example 1 of the light emitting diode illuminating device which concerns on this invention. It is a perspective view of the light source part of the light emitting diode illuminating device. It is a control block diagram of the light emitting diode illumination device. It is a wave form diagram which shows blinking operation | movement of the light emitting diode of the light emitting diode illuminating device. It is a schematic perspective view which shows Example 2 of the light emitting diode illuminating device which concerns on this invention. It is a control block diagram of the light emitting diode illumination device. It is a wave form diagram which shows blinking operation | movement of the light emitting diode of the light emitting diode illuminating device. It is a schematic side view explaining the irradiation direction and light reception direction of the light emitting diode illuminating device which concerns on this invention. It is a perspective view which shows the other example of the light source part in Example 2 of the light emitting diode illuminating device which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Light source part 2 Illuminance sensor 3 Lens board | substrate 4 Light source lens 5 Detection lens 6 Control part 7 1st light emitting diode 8 2nd light emitting diode 9 Board | substrate 11 Surface mounted chip light emitting diode 12 Surface mounted chip light emitting diode 13 Light emission diode

Claims (6)

A light emitting diode;
An illuminance sensor that detects reflected light from the object irradiated with the light emitting diode and ambient light and outputs an illuminance detection signal according to the intensity of each light;
When the level of the illuminance detection signal based on the ambient light from the illuminance sensor exceeds a predetermined threshold, the light emitting diode is kept off, and when the level is lower than the threshold, the light emitting diode blinks at a predetermined cycle. In addition, when fluctuation occurs in the level of the illuminance detection signal based on the reflected light from the illuminance sensor at the time of blinking, a constant illuminance can be obtained with the blinking period of the light emitting diode within the irradiation range of the light emitting diode. A light-emitting diode illuminating device comprising: a control unit that transitions the blinking cycle to a degree and returns the blinking state before the transition when the fluctuation disappears. A first light emitting diode that emits visible light;
A second light emitting diode that emits ultraviolet light;
An illuminance sensor that detects reflected light and ambient light from an object irradiated with these light emitting diodes and outputs an illuminance detection signal according to the intensity of each light, and
When the level of the illuminance detection signal based on the ambient light from the illuminance sensor exceeds a predetermined threshold, the first light emitting diode is kept off, and when the level is lower than the threshold, the second light emitting diode is turned off. The first light-emitting diode is turned on or a constant illuminance is obtained when the level of the illuminance detection signal based on the reflected light from the illuminance sensor at the time of the blinking is changed. A light-emitting diode illuminating device comprising: a controller that turns off the first light-emitting diode when the fluctuation disappears while blinking in a cycle.   The light-emitting diode illuminating apparatus according to claim 1, wherein the light-emitting diode is a bullet-type light-emitting diode lamp.   3. The light-emitting diode illuminating device according to claim 1, wherein the light-emitting diode is a surface-mounted chip light-emitting diode.   All the light emitting diodes are disposed on the same substrate, and a light source lens is disposed in parallel with the substrate, and the light source lens is slidable in parallel with the substrate. Item 5. The light-emitting diode illuminating device according to any one of Items 1 to 4. 6. The light emitting diode illumination device according to claim 5, wherein a detection lens is provided on the same plane as the light source lens and integrally therewith.

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