JP2010040266A - Lighting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem in a conventional lighting device that, when a human detecting sensor detects a human and the lighting device is lit in a normal way, the human detected by the human detecting sensor does not exist in an illuminating area and a real state cannot be recognized visually with certainty. <P>SOLUTION: The lighting device is provided with a light source 5 composed of light emitting diodes or the like, a human detecting sensor 2 for detecting a human in a detecting area, and a controlling part 4, when a human is detected by the human detecting sensor 2, increases an lighting output of the light source 5 gradually and controls to maintain a normal lighting state while the human exists in an illuminating area of the light source. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  In the present invention, when a person is detected by a human detection sensor, the lighting output is gradually increased (increased) and controlled so as to be in a normal lighting state (hereinafter referred to as normal lighting), thereby feeling dazzling in the irradiation area. In addition, the present invention relates to a lighting device with improved visibility.

A conventional lighting device of this type, for example, a lighting device including a human detection sensor and an illuminance sensor, when a person is detected by the human detection sensor, the light source is in a state lower than normal brightness (hereinafter referred to as night lighting). )) Has been proposed (see, for example, Patent Document 1).
As shown in FIG. 5D, the illumination device described in Patent Document 1 (hereinafter referred to as a conventional illumination device) starts lighting at night when it is determined that the ambient light is dark by the illuminance sensor at time t1 ( During the period from time t1 to time t2, when the person detection sensor detects a person at time t2, the lighting output is gradually increased, and control is performed to reach normal lighting at time t3 after a certain time has elapsed. is there.
Japanese Patent Laid-Open No. 2001-210478

In the conventional lighting device, when the lighting device is used in a corridor or the like, when the person detected by the human detection sensor is outside the irradiation area, the normal lighting may be reached. That is, there is a problem that when the lighting device reaches normal lighting, the person detected by the human detection sensor does not exist in the irradiation area, so that the current state cannot be reliably recognized.
The present invention is intended to solve the problems of the conventional configuration as described above, and when a person is detected by a human detection sensor, the illumination area is controlled by gradually turning it on and controlling it to be normally turned on. It is an object to provide a lighting device that does not feel dazzling and has excellent visibility.

  In order to achieve the above object, the present invention gradually increases the light output of the light source when a person is detected by a light source composed of a light emitting diode, a human detection sensor for detecting a person in a detection area, and the human detection sensor. And a control unit that controls as much as possible in a normal lighting state while a person is present in the irradiation area of the light source.

  According to the present invention, it is possible to normally turn on a person detected by the human detection sensor without feeling dazzling or flickering that appears to be turned on after turning off for a moment. In addition, since the normal detection light is reached while the person detected by the human detection sensor is in the irradiation area, the current state of sight can be surely visually confirmed.

  And according to this invention, when the said detection part detects a person with the said person detection sensor, it is possible to control as much as possible in a normal lighting state after it detects and reaches the said light source.

  According to the present invention, since the normal lighting is reached until it reaches the one end of the lighting device after being first detected by the human detection sensor, a bright state can be secured in front of the traveling direction. Can improve the performance.

  In addition, according to the present invention, it is possible to set a time from when a person is detected by the human detection sensor until the light source is in a normal lighting state.

  According to the present invention, since the range in which the user feels dazzling or flickering varies depending on the user, it is possible to set the time until normal lighting, thereby providing a lighting device with usability.

  Further, according to the present invention, the normal lighting state can be set in a plurality of stages.

  According to the present invention, since the normal lighting state can be set according to the user, the setting can be changed to the desired lighting state, and the lighting device has usability.

  Further, according to the present invention, when the human detection sensor does not detect a person, the control unit controls the energy saving lighting state as much as possible.

  According to the present invention, if the person is not detected by the person detection sensor, the lighting output of the light source can be lowered, so that an energy saving effect can be expected.

Further, according to the present invention, the height H from the light source to the irradiation surface, the distance L1 from the first detection by the human detection sensor to the end of the light source, the width L2 of the lighting device, When the walking speed M of the person and θ which is a half of the detection angle of the human detection sensor is θ, the maximum time Tm for the light source to be in a normal lighting state is expressed by the following equation (1).
Tm = (2 · L1 + L2) / M (where L1 = H × tan θ) (1)
It is characterized by satisfying.

  According to the present invention, since it is possible to derive the maximum time from when it is first detected in the detection area until it reaches one end of the lighting device, even if the lighting time to reach normal lighting is not known, the lighting device It is possible to estimate the time until normal lighting from the distance to the normal lighting in the irradiation area, so that the person detected by the human detection sensor does not feel dazzling and has excellent visibility It becomes a lighting device.

Further, according to the present invention, when the person is detected by the person detection sensor, the control unit controls the light source to be in a normal lighting state between 0.2 seconds and 0.7 seconds.
According to the present invention, since the normal lighting is reached in 0.2 seconds to 0.7 seconds, the person detected by the human detection sensor does not feel dazzling, and the light is turned off for a moment. It is possible to prevent such flickering, and the lighting device is improved in visibility.

  According to the present invention, since it is configured as described above, it is possible to normally turn on the person detected by the human detection sensor without feeling dazzling or flickering that appears to turn on after turning off for a moment. . In addition, since the normal detection light is reached while the person detected by the human detection sensor is in the irradiation area, the current state of sight can be surely visually confirmed.

(Embodiment 1)
Hereinafter, an embodiment of a lighting device including a human detection sensor according to the present invention will be described with reference to FIGS.
FIG. 1 is a schematic block diagram of a lighting device including the human detection sensor according to the first embodiment. FIG. 2 is an operation flow diagram for explaining the operation of the lighting device including the human detection sensor according to the first embodiment. FIG. 3 is an exploded perspective view of a main part of the illumination device including the human detection sensor according to the first embodiment. Further, FIG. 4 is an explanatory diagram for calculating the lighting control time until the normal lighting in FIG. 1 is performed.

First, the configuration of the lighting apparatus according to the present embodiment of the present invention will be described with reference to FIG.
The illumination device 1 according to the present embodiment includes a light source 5 composed of a light emitting diode, an organic EL, and the like, a human detection sensor 2 that detects a change in temperature distribution by sensing a change in infrared rays, The control unit 4 controls lighting of the light source 5 and an infrared sensor unit (remote control signal receiving unit) 3 that transmits an infrared signal related to a lighting mode set by remote control by a remote controller to the control unit 4.

  The human detection sensor 2 senses a change in infrared rays in the detection area and determines whether or not a person is present, and a person who transmits a detection signal from the human detection determination unit 20 to the control unit 4 described later. It is comprised by the detection sensor signal transmission part 21. FIG. In the present embodiment, a motion sensor that detects the movement of a person is used as the human detection sensor 2, but the present invention is not limited to this.

  The control unit 4 is configured to determine an output to each unit based on the detection result from the human detection sensor 2, and when the person is detected by the human detection sensor 2, the output determination unit 41 determines a predetermined value. The timer unit 40 for measuring the time of the above, a storage unit 42 for storing a plurality of lighting modes, and an output control unit 43 for performing lighting control of the light source 5 by a signal transmitted from the output determination unit 41.

  The infrared sensor unit 3 receives an infrared signal about the lighting mode set by the remote controller, and transmits an infrared signal received by the infrared signal receiver 30 to the control unit 4. Part 31.

  Next, operation | movement of the illuminating device 1 in this Embodiment is demonstrated based on FIG.2 and FIG.3. The lighting device 1 will be described on the assumption that it is installed in a hallway or the like.

  First, as shown in FIG. 2, when the power is turned on in step S0, the process proceeds to step S1 and is normally lit. And in order to time-measure by the said timer part 40, it transfers to step S2.

  Next, when a person passes through a corridor or the like, and the person detection sensor 2 detects the movement of the person (step S3), the process proceeds to step S2 in order to again measure the time since the person was detected. And until the state which does not detect a human motion by the said human detection sensor 2 continues for a fixed time, a human motion is always detected (step S3). If it is detected, the time counted by the timer unit 40 is reset each time, and time counting is started from the beginning (step S4).

  Next, when the human detection sensor 2 no longer detects a person's movement and a certain time has elapsed (step S4), the process proceeds to step S5 in order to perform energy saving lighting 1. The energy saving lighting 1 refers to a night lighting in which the lighting output of the light source 5 is 5% with respect to the normal lighting. Further, when the lighting output is lowered from the normal lighting to the night lighting in step S1, it may be set so that it gradually becomes darker. By performing the lighting control in such a manner, a person in the irradiation area does not feel a sudden decrease in visibility, and time for preparing for taking the next action is also secured.

Then, when energy saving lighting 1 is started in step S5, the process proceeds to step S6, and the timer 40 measures the time.
In addition, although a certain time is counted in step S6, if the human detection sensor 2 detects a human movement during that time (step S7), the process proceeds to step S1 and normal lighting is performed from the state of the energy saving lighting 1. Further, until a certain time elapses in a state where no person is detected in step S7 (step S8), the person is detected, and if detected, the time counted by the timer unit 40 is reset each time (step S2). ).

  At this time, in order to prevent the detected person from feeling dazzling or flickering, when the person is detected by the person detection sensor, the lighting output of the light source 5 is gradually increased (increased) and detected. While the person is present in the irradiation area, control is performed so as to reach normal lighting by the control unit. Therefore, the detected person does not feel dazzling or surprised by sudden lighting. In addition, it is possible to surely visually recognize the current state of sight.

  If no human movement is detected even after a certain period of time has elapsed, the process proceeds to step S9 where energy saving lighting 2 is performed. The energy saving lighting 2 in step S9 indicates a state in which the light source is lit with a lower lighting output than the energy saving lighting 1 in step S5. In addition, when the lighting state shifts from the energy saving lighting 1 to the energy saving lighting 2, the lighting output may be gradually decreased instead of decreasing at once.

Next, when the person is detected by the human detection sensor 2 in the state of the energy saving lighting 2 (step S10), the process proceeds to step S1 and the normal lighting is performed. Also in this case, as in step S7, in order to prevent the detected person from feeling dazzling or flickering, when the person is detected by the person detection sensor, the lighting output of the light source 5 is gradually increased (increased). In addition, while the detected person exists in the irradiation area, the control unit performs control so as to reach normal lighting. Therefore, it becomes possible for the detected person to visually recognize the current state of the present without failing to feel dazzling or surprised by sudden lighting.
Moreover, when not detecting a person by step S10, the energy saving lighting 2 is maintained.

  As described above, in the present embodiment, the three modes of normal lighting, energy saving lighting 1 and energy saving lighting 2 have been described as lighting modes. However, the lighting device 1 has a plurality of lighting stages. For example, 100% lighting is “mode 1”, 70% lighting is “mode 2”, and 50% lighting is performed. Is “mode 3”, 30% is lit “mode 4”, 10% is lit “mode 5”, 5% is lit “energy saving mode 1”, 3 % Lighting is possible in 7 levels of “energy saving mode 2”. Whether the normal lighting is set to “mode 1” or “mode 2” can be adjusted according to the user's preference. In addition, since the user can adjust the brightness to a desired brightness without taking time and effort if the remote control is possible with a remote control that remotely controls the lighting device 1, the lighting device 1 with excellent usability can be changed. It becomes.

  Further, the lighting mode is not limited to the above seven steps, and 10% lighting or 20% lighting can be set as the energy saving mode, or the energy saving mode can be limited to one step. That is, when the energy saving lighting is not performed in two stages but in one stage, the state of energy saving lighting 1 is maintained until a person is detected in step S5 of the above flow. The process proceeds to S1.

  Therefore, since it is the illuminating device 1 provided with the multi-step lighting mode, it is possible to set the lighting mode according to the user, and when no person is detected, an energy saving effect is achieved by performing the energy saving lighting. The lighting device 1 is obtained.

  And the illuminating device 1 in this Embodiment can set the time which shifts from step S7 to step S1 and step S10 to step S1, ie, the time from the state of energy saving lighting 1 or energy saving lighting 2 to normal lighting. It is. Furthermore, when a light-emitting diode or the like is used as the light source 5, it is possible to perform fine lighting control with a shorter time until lighting than conventional fluorescent lamps. Therefore, specifications tailored to the user are possible, and problems such as glare and flickering can be solved.

  Furthermore, if the detected person is set to reach normal lighting in the irradiation area, the user will not feel dazzling or flickering. Assuming the case of passing, it is preferable that the normal lighting is reached at least before reaching one end of the lighting device 1. Therefore, it becomes the illuminating device 1 which can visually recognize the present present condition more reliably.

  Moreover, the said irradiation area means the range in the irradiation surface which irradiates the irradiation light from the light source 5, Even if the relationship between a detection area and the said irradiation area corresponds by the said human detection sensor 2, one side is the other. It may be wider. In the present embodiment, the description is based on the assumption that the irradiation area is entered when detected by the human detection sensor 2.

Furthermore, the one end of the illuminating device 1 refers to a position where the illuminating device 1 first reaches the traveling direction.
In addition, although the said illuminating device 1 applies the yellow fluorescent substance to a blue light emitting diode and uses the light source 5 which light-emits white, the diffuser plate of the illuminating device 1 is different, or the light emitting diode of a different color is used. They may be used, or a plurality of light emitting diodes of different colors may be arranged and used. As described above, the lighting device 1 that emits light in various colors can be obtained.

  Further, as described above, the lighting device 1 using one human detection sensor 2 has been described in the present embodiment, but the present invention is not limited to this, and a plurality of human detection sensors 2 may be used. For example, when the human detection sensor 2 is mounted on both ends of the lighting device 1, when a person approaches from one of the human detection sensors 2, the light source 5 of the lighting device 1 is detected and approached. It is also possible to perform control so as to gradually increase (increase) the lighting output of the light source 5 from one direction to the other. Therefore, it becomes the illuminating device 1 which was more excellent in visibility because the illuminating device 1 lights sequentially toward the advancing direction of the person who passes.

Further, the time from the state of the energy saving lighting 1 and the energy saving lighting 2 until the normal lighting is reached will be described by showing the experimental results.
In the experiment, the time to reach the normal lighting was set to 0.3 seconds, 0.2 seconds, and 0.1 seconds, and the lighting control was confirmed. As conditions, walking under normal lighting conditions such as walking speed, eye line during walking, and the like were passed under the lighting device 1.

As a result of the simulation under the conditions described above, when the time until normal lighting is 0.3 seconds, no unnaturalness is felt, but after the light emitting surface of the lighting device 1 is out of view, normal lighting may be reached. there were. Therefore, it was determined that the lighting control time may be long.
Further, when the time until normal lighting is 0.1 seconds, although it is not instantaneous lighting, the lighting speed is felt fast and flickering may occur.
Furthermore, if the time until normal lighting is 0.2 seconds, you can feel natural lighting, and you will not feel dazzling or flickering compared to the case where it is set to 0.3 seconds or 0.1 seconds. It was.
Therefore, a result that required at least 0.2 seconds was obtained as the minimum time to reach normal lighting.

Next, the calculation of the maximum lighting time from the first detection by the human detection sensor 2 to the normal lighting will be described with reference to FIG.
As a condition, it is assumed that the lighting device 1 is installed in front of the detected person's traveling direction, and the detected person passes under the lighting device 1.

  First, it is assumed that the person to be detected is walking toward the lighting device 1 at M (m / sec). The distance from the position first detected by the human detection sensor 2 mounted on the lighting device 1 to the lighting device 1 farthest in the traveling direction is defined as L1 (m). Further, assuming that the width of the lighting device 1 with respect to the traveling direction is L2 (m), the maximum time Tm from the detection by the human detection sensor 2 until the normal lighting is reached is Tm = (2 · L1 + L2) / M. Can be represented. However, L1 was calculated in consideration of the detection angle of the human detection sensor 2 and the height at which the lighting device 1 is installed from the floor surface. That is, when the lighting device 1 is installed at a position of H (m) from the floor surface with θ (degrees) being 1/2 the angle of detection by the human detection sensor 2, L1 is , L1 = H · tan θ can be expressed.

Further, when Tm is calculated by the above method, it is calculated in consideration of the case where the detection area detected by the human detection sensor 2 is different from the irradiation area.
Therefore, it is possible to calculate the maximum time from when the person to be detected is detected by the human detection sensor 2 until it reaches one end of the lighting device 1, and based on the calculation result, the time until normal lighting is set. By doing so, it becomes the lighting device 1 that allows the detected person to surely visually recognize the current state of sight without feeling dazzling or flickering.

  Furthermore, based on the calculation of Tm, the optimum time Tm1 until normal lighting is expressed by a relational expression of Tm1 = (L1−L2) / M. If the normal lighting can be reached in the time calculated by the Tm1, the front in the traveling direction after the detection by the human detection sensor 2 has reached the normal lighting, so that the lighting device 1 with improved visibility is obtained. .

More specifically, a person is walking at a normal speed of 4 (km / h) (about 1.2 (m / sec)), and the lighting device is 2.6 (m) from the floor. , The detection angle is 100 (degrees), and the width of the illumination device is 1.2 (m), Tm1 = (L1-L2) / M = ((2.6 · tan50) −1.2 ) /1.2=0.6923. That is, if it is controlled so that the light source reaches normal lighting in about 0.7 seconds after being detected by the human detection sensor, the lighting device that is normally turned on when the detected person reaches one end of the lighting device. It becomes.
From the above, the optimum time until normal lighting is preferably in the range of 0.2 seconds to Tm1, that is, 0.7 seconds, and the maximum time until normal lighting preferably satisfies the above Tm. .

(Embodiment 2)
The human detection sensor 10 in the present embodiment employs the human detection sensor 10 that detects a person by a method different from that of the human detection sensor 2 in the first embodiment. Since it is the same as Form 1, it attaches | subjects the same code | symbol and the detailed description is abbreviate | omitted.

  The human detection sensor 10 in the present embodiment is a sensor that detects infrared rays emitted from various objects using pyroelectric characteristics, and uses infrared rays to set a detection area (including an irradiation area). It is a sensor (hereinafter referred to as a pyroelectric sensor) that detects a person by emitting and detecting the bounce of the infrared rays. Further, the human detection sensor is not limited to this, and a sensor for detecting a human by other methods may be used. For example, a person may be detected by an infrared sensor, a temperature sensor, or the like. And in this Embodiment, as long as the person to be detected exists in a detection area (including an irradiation area), the normal lighting is always maintained by using the pyroelectric sensor 10.

  Therefore, unlike the first embodiment, if the detected person exists in the detection area (including the irradiation area) in a state in which nothing is operated, the transition to the energy saving lighting 1 or the energy saving lighting 2 is normally performed. It becomes possible to keep lighting. Therefore, it is preferable that the lighting device 1 according to the present embodiment be installed not in a place with traffic such as a hallway but in a place where a person may exist for a certain period of time such as a room. Therefore, when leaving the room where the lighting device 1 is installed, it is possible to prevent the lighting device 1 from being forgotten to be turned off, and an energy saving effect is achieved.

(Embodiment 3)
The human detection sensor 11 in the present embodiment employs the human detection sensor 11 that detects a person by a method different from those in the first and second embodiments described above, and other configurations of the lighting device 1 are implemented. Since it is the same as Form 1, it attaches | subjects the same code | symbol and the detailed description is abbreviate | omitted.

  The human detection sensor 11 in the present embodiment is a sensor that measures the distance to a target reflection object by ultrasonic waves or the like (hereinafter referred to as a distance sensor). Since the distance between the detected person and the lighting device 1 can be measured by using the distance sensor 11, the lighting output is gradually increased (increased) as the lighting device 1 is approached as a lighting control method. It is possible to set the lighting output to gradually increase (increase) each time the distance is measured. Therefore, when installed in a corridor or the like that passes under the lighting device 1, the lighting output is increased (increased) as it approaches the lighting device 1, and after passing, the lighting output is decreased as the distance from the lighting device 1 increases. Control (decrease) becomes possible. Therefore, it becomes the illuminating device 1 in which the energy-saving effect was achieved, without using the timer time-measured at the said step 2.

It is a schematic block diagram which shows the structure of the illuminating device which concerns on Embodiment 1 of this invention. It is an operation | movement flowchart explaining operation | movement of the illuminating device which concerns on Embodiment 1 of this invention. It is a principal part disassembled perspective view regarding the attachment structure of the sensor of the illuminating device which concerns on Embodiment 1 of this invention. It is explanatory drawing for calculation of the lighting control time until it performs normal lighting of the illuminating device which concerns on Embodiment 1 of this invention. It is a time chart figure regarding lighting control of the conventional illuminating device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Illuminating device 2, 10, 11 Human detection sensor 4 Control part 42 Memory | storage part 5 Light source

Claims (7)

A light source composed of a light emitting diode, etc .;
A human detection sensor for detecting a person in the detection area;
When a person is detected by the human detection sensor, the lighting output of the light source is gradually increased, and a control unit that controls as much as possible in a normal lighting state while a person is present in the irradiation area of the light source is provided. A lighting device characterized by that.   The lighting device according to claim 1, wherein when the person is detected by the human detection sensor, the control unit performs control so that a normal lighting state is obtained after the detection until the light source is reached.   The lighting device according to claim 1, wherein a time from when the person is detected by the person detection sensor to when the light source is in a normal lighting state can be set.   The lighting device according to any one of claims 1 to 3, wherein the normal lighting state can be set in a plurality of stages. The said control part is an illuminating device as described in any one of Claim 1 to 4 which controls as much as possible an energy saving lighting state, when the said person detection sensor does not detect a person. Height H to the light source and irradiation surface;
A distance L1 from the first detection by the human detection sensor to the end of the light source;
A width L2 of the lighting device;
Human walking speed M,
Assuming that θ is half the detection angle of the human detection sensor,
The maximum time Tm for the light source to be in a normal lighting state is expressed by the following equation (1).
Tm = (2 · L1 + L2) / M (where L1 = H × tan θ) (1)
The lighting device according to any one of claims 1 to 5, wherein:   The control unit according to any one of claims 1 to 6, wherein when the person is detected by the human detection sensor, the light source is controlled to be in a normal lighting state between 0.2 seconds and 0.7 seconds. A lighting device according to any one of the above.

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