JP2008210535A - Led illumination fixture device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an illumination fixture device in which glare is not felt while illuminance is kept as it is. <P>SOLUTION: The LED illumination fixture device 100 is equipped with a plurality of light-emitting diodes (LED) to emit light at different wavelengths, and a control part 110 to adjust an output of the plurality of the light-emitting diodes, the plurality of the light-emitting diodes include a short wavelength LED group 120 to emit light at a short wavelength of 500 nm or less and an LED group 130 to emit light at a longer wavelength than 500 nm, and the control part 110 is constituted so as to enable to stop or reduce the output of the short wavelength LED group 120. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a lighting apparatus using a light emitting diode (LED) as a light source.

  Conventional lighting devices generally use incandescent bulbs or fluorescent lamps. 2. Description of the Related Art Conventionally, in a lighting fixture device including a light source such as an incandescent bulb or a fluorescent lamp, glare is reduced by suppressing the output of the light source and reducing the amount of light entering the human eye.

  For example, in the lighting switch device described in Japanese Patent Application Laid-Open No. 9-7771 (Patent Document 1), whether the lamp is fully lit or dimmed is controlled according to a detection result of an illuminance sensor that detects ambient brightness. . When the surroundings are dark, the lamp is gradually brightened from the extinguished state, and the lamp output is increased to a dimming level that is lower than the full lighting.

Further, in the lighting apparatus described in Japanese Patent Laid-Open No. 9-266073 (Patent Document 2), when the lamp is turned on at midnight, the output of the lamp is set so that the illuminance around the human face is about 1 to 5 lux. Is controlling.
JP-A-9-7771 Japanese Patent Laid-Open No. 9-266073

  However, the output of the light source is reduced as in the lighting switch device described in JP-A-9-7771 (Patent Document 1) and the lighting device described in JP-A-9-266073 (Patent Document 2). In the case of a luminaire device that dimmes light and adjusts the light, it feels dazzling unless the overall illuminance is significantly reduced. In order to reduce the illuminance to such an extent that no glare is felt, it is necessary to considerably reduce the output of the light source. If the output of the light source is reduced to such an extent that no glare is felt, the surrounding situation becomes difficult to visually recognize even when the illumination is turned on, which is not preferable for safety.

  Then, the objective of this invention is providing the lighting fixture apparatus which does not feel dazzle, maintaining illuminance.

  The LED lighting apparatus according to the present invention includes a plurality of light emitting diodes (LEDs) that emit light at different wavelengths, and a control means for adjusting the outputs of the plurality of light emitting diodes, and the plurality of light emitting diodes is 500 nm or less. A first light-emitting diode that emits light at a short wavelength of and a second light-emitting diode that emits light at a wavelength longer than 500 nm, and the control means can stop or reduce the output of the first light-emitting diode. It is configured to be.

  Light of various wavelengths is radiated from light sources such as incandescent bulbs and fluorescent lamps used in conventional lighting apparatus. Even in the visible region, short-wavelength light has strong energy, and when such light enters the eyes, it causes glare.

  Therefore, rather than reducing the amount of light by reducing the amount of light by stopping or reducing the output for all wavelengths of light, as in the case of reducing the glare of incandescent and fluorescent lamps, it feels particularly dazzling. By stopping or reducing the output of only short-wavelength light that is easily generated, glare can be reduced while maintaining illuminance.

  Therefore, a light emitting diode (LED) capable of emitting light with a specific wavelength is used as a light source of the lighting apparatus. By using a plurality of light emitting diodes that emit light at different wavelengths, only the light emitting diodes that emit light of a specific wavelength can be stopped or dimmed, and can be dimmed to illumination of various colors . By using a first light emitting diode that emits light at a short wavelength of 500 nm or less and a second light emitting diode that emits light at a wavelength longer than 500 nm as a light source, 500 nm that causes glare in light in the visible region. Only the following short wavelength light can be selected to stop or diminish the irradiation.

  By doing in this way, the lighting fixture apparatus which does not feel glare while maintaining illumination intensity can be provided.

  Further, even for a person who has a retinal disease such as retinitis pigmentosa or a corneal disease and easily feels dazzling, bright lighting can be achieved without feeling dazzling. Since the glare is reduced, the illumination can be seen with clear contrast.

  In the LED lighting apparatus according to the present invention, the control means preferably includes output switching means for the user to stop or reduce the output of the first light emitting diode.

  By doing in this way, according to a user's need, the illumination which reduced the glare and the illumination which raised the light quantity and can be brightened can be switched.

  The LED lighting apparatus according to the present invention includes storage means for storing a predetermined time zone, and the control means outputs the output of the first light emitting diode in the predetermined time zone stored in the storage means. It is preferable that the predetermined time zone control for controlling the first light emitting diode is performed so as to stop or decrease, and the predetermined time zone control is not performed in a time zone other than the predetermined time zone stored in the storage unit.

  In this way, for example, when the predetermined time zone is set to midnight, the illumination with reduced glare can be turned on without the user having to consciously adjust the illumination. Can prevent you from awakening and then falling asleep.

  The LED lighting apparatus according to the present invention includes illuminance detection means for detecting the illuminance around the light emitting diode, and the control means is configured such that the illuminance detected by the illuminance detection means is smaller than a predetermined value. The first light emitting diode is preferably controlled to stop or reduce the output of the first light emitting diode.

  By doing so, it is possible to automatically turn on illumination with reduced glare when the surroundings are dark, and automatically turn on illumination with high illuminance when the surroundings are bright. Since illumination with reduced glare according to the surrounding brightness can be used, it is possible to prevent suddenly seeing dazzling light when the eyes are not used to the brightness. Further, when the surroundings are bright, efficient illumination can be performed by increasing the illumination intensity.

  In the LED lighting apparatus according to the present invention, when the output of the first light emitting diode is stopped or reduced, the control means is configured to adjust the output of the second light emitting diode with the first light emitting diode. It is preferable to control the second light emitting diode.

  When irradiation with light having a short wavelength of 500 nm or less is stopped or dimmed to reduce glare, blue or purple light is removed from the illumination light, so that the illumination color becomes reddish.

  Therefore, by doing this, even when the illumination is reduced in glare, the glare can be reduced by adjusting the output of the second light emitting diode and adjusting the color of the illumination and the overall light amount. The unpleasant feeling that the reduced light receives from colors such as extremely red can be suppressed.

  As described above, according to the present invention, it is possible to provide a lighting apparatus that does not feel dazzling while maintaining illuminance.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a block diagram showing a configuration of an LED lighting apparatus as a first embodiment of the present invention.

  As shown in FIG. 1, the LED lighting apparatus 100 emits light at a wavelength longer than 500 nm, a control unit 110 as control means, a short wavelength LED group 120 as a first light emitting diode that emits light at a short wavelength of 500 nm or less. The second light emitting diode includes a non-short-wavelength LED group 130, a power supply unit 140, and a switch unit 150 for switching lighting on and off. The short wavelength LED group 120 includes n LEDs, LEDa1, LEDa2,... LEDan that emit light of different wavelengths. The non-short wavelength LED group 130 includes m light-emitting diodes of LEDb1, LEDb2,..., LEDbm that emit light having different wavelengths. Each of the short wavelength LED group 120 and the non-short wavelength LED group 130 may include a plurality of light emitting diodes that emit light at the same wavelength.

  Electric power is supplied from the power supply unit 140 to the individual light emitting diodes constituting the short wavelength LED group 120 and the non-short wavelength LED group 130 via the control unit 110. The controller 110 adjusts the outputs of the individual light-emitting diodes constituting the short wavelength LED group 120 and the non-short wavelength LED group 130. Here, the illumination when the control unit 110 stops or reduces the output of the individual light-emitting diodes constituting the short wavelength LED group 120 is referred to as “light-shielding mode”, and the illumination that is not “light-shielded mode” is referred to as “normal mode”.

  The controller 110 adjusts the output of each light-emitting diode that constitutes the non-short wavelength LED group 130 when performing illumination in the “light-shielding mode”, and the amount of light is too small to feel the glare, but the surroundings are visually recognized. In other words, the amount of light is not so great that the glare is not eliminated even with illumination using only the non-short wavelength LED group 130, and the redness of the illumination light is not excessively strong.

  The user can turn on the switch unit 150 to turn on the illumination, and turn off the switch unit 150 to turn off the illumination.

  FIG. 2 is a spectral distribution diagram of illumination light when all the light emitting diodes of the LED lighting apparatus are turned on as the first embodiment of the present invention.

  As shown in FIG. 2, the light emitting diodes (LEDa1, LEDa2,... LEDan) constituting the short wavelength LED group 120 that emits light at a short wavelength of 500 nm or less, and the non-short wavelength LED group 130 that emits light at a wavelength longer than 500 nm. Of all the light emitting diodes (LEDb1, LEDb2,..., LEDbm) constituting the light distribution over the entire visible light range including a short wavelength region A of 500 nm or less and a region B of a wavelength longer than 500 nm. Is spreading. In FIG. 2, a plurality of peak wavelengths can be seen. By adjusting the output of each light emitting diode, the relative intensity ratio of the peaks at each wavelength is adjusted, and the light of the various wavelengths emitted by the light emitting diode is mixed. The illumination color can be obtained. In this way, by using the light emitting diode as the light source, it is possible to realize a lighting device 100 that is bright and has good color rendering properties.

  FIG. 3 is a spectral distribution diagram of illumination light when all the light emitting diodes constituting the short wavelength LED group are turned off as the first embodiment of the present invention.

  As shown in FIG. 3, when the control unit 110 controls to turn off all the light emitting diodes constituting the short wavelength LED group 120 and performs “light blocking mode” illumination, the light in the short wavelength region A of 500 nm or less is I can't see it. In the region B having a wavelength longer than 500 nm, a plurality of peaks are observed corresponding to the wavelength and output of the light emitting diodes constituting the non-short wavelength LED group 130.

  Here, as the “light-shielding mode”, the output is stopped for the light emitting diodes of all wavelengths of 500 nm or less, but the output of only a part of the light emitting diodes of the wavelengths of 500 nm or less may be stopped. The glare can also be reduced by reducing the output without stopping completely.

  As described above, the LED lighting apparatus 100 includes a plurality of light emitting diodes (LEDs) that emit light at different wavelengths and the control unit 110 for adjusting the outputs of the plurality of light emitting diodes, and the plurality of light emitting diodes has a thickness of 500 nm. The control unit 110 includes a short wavelength LED group 120 that emits light at a short wavelength and a non-short wavelength LED group 130 that emits light at a wavelength longer than 500 nm, and the control unit 110 stops or reduces the output of the short wavelength LED group 120. Is configured to be possible.

  Light of various wavelengths is radiated from light sources such as incandescent bulbs and fluorescent lamps used in conventional lighting apparatus. Even in the visible region, short-wavelength light has strong energy, and when such light enters the eyes, it causes glare.

  Therefore, rather than reducing the amount of light by reducing the amount of light by stopping or reducing the output for all wavelengths of light, as in the case of reducing the glare of incandescent and fluorescent lamps, it feels particularly dazzling. By stopping or reducing the output of only short-wavelength light that is easily generated, glare can be reduced while maintaining illuminance.

  Therefore, a light emitting diode (LED) capable of emitting light with a specific wavelength is used as the light source of the lighting apparatus 100. By using a plurality of light-emitting diodes (short-wavelength LED group 120, LED group 130) that emit light at different wavelengths, it is possible to dim light of various colors. In such an LED lighting apparatus 100, it is possible to stop or reduce irradiation of only light having a short wavelength of 500 nm or less that causes glare among light in the visible region.

  By doing in this way, the LED lighting fixture apparatus 100 which does not make it feel dazzling, maintaining illuminance can be provided.

  Further, even for a person who has a retinal disease such as retinitis pigmentosa or a corneal disease and easily feels dazzling, bright lighting can be achieved without feeling dazzling. Since the glare is reduced, the illumination can be seen with clear contrast.

  In the LED lighting apparatus 100 according to the present invention, the control unit 110 adjusts the output of the non-short wavelength LED group 130 when stopping or reducing the output of the light emitting diodes of the short wavelength LED group 120. LEDa1, LEDa2,... LEDan of the short wavelength LED group 120 and LEDb1, LEDb2,.

  When irradiation with light having a short wavelength of 500 nm or less is stopped or dimmed to reduce glare, blue or purple light is removed from the illumination light, so that the illumination color becomes reddish.

  Therefore, even when the illumination is reduced in this way, the output of the non-short wavelength LED group 130 is adjusted to adjust the color of the illumination and the total amount of light. It is possible to suppress the discomfort that the light with reduced light receives from colors such as extremely red.

(Second Embodiment)
FIG. 4 is a block diagram showing a configuration of an LED lighting apparatus as a second embodiment of the present invention.

  As shown in FIG. 4, the LED lighting apparatus 101 is different from the LED lighting apparatus 100 of the first embodiment in that the switch unit 150 includes a power switch 151 and a light shielding switch 152 as output switching means. The other structure of the lighting fixture apparatus 101 is the same as that of the lighting fixture apparatus 100 of 1st Embodiment.

  The power switch 151 is a switch for switching lighting on and off. The light shielding switch 152 switches between “light shielding mode” illumination for stopping or reducing the output of the short wavelength LED group 120 and illumination for lighting all the light emitting diodes of the short wavelength LED group 120 and the non-short wavelength LED group 130. It is a switch. When the power switch 151 and the light shielding switch 152 are operated by the user, the power switch 151 and the light shielding switch 152 transmit a control signal to the control unit 110, and the control unit 110 receives the control received from the power switch 151 and the light shielding switch 152. Based on the signal, the outputs of the light emitting diodes of the short wavelength LED group 120 and the non-short wavelength LED group 130 are controlled.

  The user can turn on the power by turning on the power switch 151 and turn off the light by turning off the power switch 151. When the user turns on the light shielding switch 152, the light shielding mode is set. When the user turns off the light shielding switch 152, the light emitting diodes of the short wavelength LED group 120 are the same as the light emitting diodes of the non-short wavelength LED group 130. The output lights up without being stopped or reduced.

  The light-emitting diodes that can control the stop or decrease of the output through the operation of the light shielding switch 152 are not all light-emitting diodes in the entire wavelength region of 500 nm or less, but only light-emitting diodes that emit light at some wavelengths of 500 nm or less. It does not matter. Further, the light shielding switch 152 is not separate from the power switch 151 and may be shared by a single switch.

  As described above, in the LED lighting apparatus 101, the control unit 110 includes the light shielding switch 152 for the user to stop or reduce the output of the short wavelength LED group 120.

  By doing in this way, according to a user's need, the illumination which reduced the glare and the illumination which raised the light quantity and can be brightened can be switched.

  Other effects of the LED lighting apparatus 101 of the second embodiment are the same as those of the LED lighting apparatus 100 of the first embodiment.

(Third embodiment)
FIG. 5 is a block diagram showing a configuration of an LED lighting apparatus as a third embodiment of the present invention.

  As shown in FIG. 5, the LED lighting device 102 is provided with a timer unit 160 as storage means, which is different from the LED lighting device 101 of the second embodiment. The timer unit 160 stores a predetermined time zone and can detect the current time. The timer unit 160 may store a time zone set at the time of shipment from the factory, or may store a time zone set by the user at the start of use or during use. The timer unit 160 detects the current time and transmits a control signal to the control unit 110. The other structure of the lighting fixture apparatus 102 is the same as that of the lighting fixture apparatus 101 of 2nd Embodiment.

  FIG. 6: is a flowchart which shows the control processing of the timer control in order in the LED lighting fixture apparatus of this invention concerning 3rd Embodiment of this invention. This flowchart is executed as one subroutine in the main routine of the program executed by the control unit 110. In the following steps, the main body that performs the predetermined determination is the control unit 110.

  As shown in FIG. 6, in step S001, the control unit 110 determines whether or not the power switch 151 is in an ON state. If the power switch 151 is OFF and the illumination is turned off, the subroutine is exited. If the power switch 151 is in the ON state and the illumination is on, the process proceeds to step S002.

  In step S002, the control unit 110 confirms whether or not the light blocking switch 152 is turned on. If the light shielding switch 152 is turned on and the illumination is in the “light shielding mode”, the subroutine is exited. If the light shielding switch 152 is turned off and the illumination is in the “normal mode” other than the “light shielding mode”, the process proceeds to step S003.

  In step S003, control unit 110 confirms the predetermined time zone stored in timer unit 160, and proceeds to step S004. In step S 004, the timer unit 160 detects the current time and transmits a control signal to the control unit 110. In step S 005, based on the control signal received from timer unit 160, control unit 110 determines whether the current time is within a predetermined time zone stored in timer unit 160. If the current time is within the predetermined time zone stored in the timer unit 160, the process proceeds to step S006, and the control unit 110 controls the outputs of the short wavelength LED group 120 and the non-short wavelength LED group 130 to “ Illumination in the “shield mode” is performed, and then the subroutine is exited.

  If the current time is not within a predetermined time zone stored in the timer unit 160, the process proceeds to step S007. In step S007, the control unit 110 controls the outputs of the short wavelength LED group 120 and the non-short wavelength LED group 130 so as to perform illumination in the “normal mode”. At this time, if the control unit 110 controls the short wavelength LED group 120 to perform illumination in the “light shielding mode” in step S006, the lighting mode returns from the “light shielding mode” to the “normal mode” illumination. If the control unit 110 does not control the short wavelength LED group 120 so as to perform “light blocking mode” illumination in step S006, “normal mode” illumination is maintained.

  As described above, the LED lighting apparatus 102 automatically shifts to the “light-shielding mode” when the light-shielding switch 152 is not turned on and the illumination is turned on in the “normal mode” when a predetermined time period comes. To do. If the predetermined time zone comes when the illumination is turned off, the light is turned on in the “light-shielding mode” when the power switch 151 is turned on next by the user. When the control for shifting to the “light-shielding mode” is performed in a predetermined time zone, when the illumination is turned on even after the predetermined time zone, the “light-shielding mode” is returned to the “normal mode”. To control. However, when the light blocking switch 152 is in the ON state, even if the light blocking switch 152 is turned on in the “light blocking mode” after a predetermined period of time, the “normal mode” is not shifted and the “light blocking mode” is maintained.

  As described above, the LED lighting apparatus 102 includes the timer unit 160 for storing a predetermined time zone, and the control unit 110 performs the short wavelength LED group 120 in the predetermined time zone stored in the timer unit 160. The time zone control for controlling the short wavelength LED group 120 is performed so as to stop or decrease the output of the LED, and the time zone control is not performed in a time zone other than the predetermined time zone stored in the timer unit 160.

  In this way, for example, when the predetermined time zone is set to midnight, the illumination with reduced glare can be turned on without the user having to consciously adjust the illumination. Can prevent you from awakening and then falling asleep.

  Other effects of the LED lighting apparatus 102 of the third embodiment are the same as those of the LED lighting apparatus 101 of the second embodiment.

(Fourth embodiment)
FIG. 7 is a block diagram showing a configuration of an LED lighting apparatus as a fourth embodiment of the present invention.

  As shown in FIG. 7, the LED lighting apparatus 103 includes a sensor unit 170 as illuminance detection means, which is different from the LED lighting apparatus 101 of the second embodiment. The sensor unit 170 detects the illuminance around the LED lighting apparatus 103. Information on the illuminance detected by the sensor unit 170 is stored in the control unit 110.

  If the illuminance detected by the sensor unit 170 during illumination is less than or equal to a predetermined illuminance, the control unit 110 controls the output of the LEDs of the short wavelength LED group 120 so as to perform illumination in the “light shielding mode”. In addition, when the user turns on the power switch 151 to turn on the illumination, if the illuminance detected by the sensor unit 170 before the user turns on the power switch 151 is equal to or less than a predetermined illuminance, the “light shielding mode” ”Lights with priority.

  As described above, the LED lighting apparatus 103 includes the sensor unit 170 for detecting the illuminance around the light-emitting diode, and the control unit 110 determines that the illuminance detected by the sensor unit 170 is smaller than a predetermined value. Controls the short wavelength LED group 120 to stop or reduce the output of the short wavelength LED group 120.

  By doing so, it is possible to automatically turn on illumination with reduced glare when the surroundings are dark, and automatically turn on illumination with high illuminance when the surroundings are bright. By using illumination with reduced glare according to the surrounding brightness, it is possible to prevent suddenly dazzling light from being seen when the eyes are not used to the brightness. Further, when the surroundings are bright, efficient illumination can be performed by increasing the illumination intensity.

  Other effects of the LED lighting apparatus 103 of the fourth embodiment are the same as those of the LED lighting apparatus 101 of the second embodiment.

  The embodiment disclosed above should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above embodiments but by the scope of claims, and includes all modifications and variations within the meaning and scope equivalent to the scope of claims.

It is a block diagram which shows the structure of LED lighting fixture apparatus as 1st Embodiment of this invention. As 1st Embodiment of this invention, it is a spectral distribution map of the illumination light when all the LEDs of LED lighting fixture apparatus are lighted. FIG. 3 is a spectral distribution diagram of illumination light when all the LEDs constituting the short wavelength LED group are turned off as the first embodiment of the present invention. It is a block diagram which shows the structure of an LED lighting fixture apparatus as 2nd Embodiment of this invention. It is a block diagram which shows the structure of LED lighting fixture apparatus as 3rd Embodiment of this invention. It is a flowchart which shows the control processing of the timer control in order in the LED lighting fixture apparatus of this invention concerning 3rd Embodiment of this invention. It is a block diagram which shows the structure of LED lighting fixture apparatus as 4th Embodiment of this invention.

Explanation of symbols

  100: 103: LED lighting apparatus, 110: control unit, 120: short wavelength LED group, 130: non-short wavelength LED group, 152: light shielding switch, 160: timer unit, 170: sensor unit.

Claims (5)

A plurality of light emitting diodes (LEDs) that emit light at different wavelengths;
Control means for adjusting the output of the plurality of light emitting diodes,
The plurality of light emitting diodes include a first light emitting diode that emits light at a short wavelength of 500 nm or less, and a second light emitting diode that emits light at a wavelength longer than 500 nm,
The LED lighting device apparatus, wherein the control means is configured to be able to stop or reduce the output of the first light emitting diode.   2. The LED lighting apparatus according to claim 1, wherein the control means includes an output switching means for a user to stop or reduce the output of the first light emitting diode. A storage means for storing a predetermined time zone;
The control means performs a predetermined time zone control for controlling the first light emitting diode so as to stop or reduce the output of the first light emitting diode in a predetermined time zone stored in the storage means, The LED lighting apparatus according to claim 1 or 2, wherein the predetermined time zone control is not performed in a time zone other than the predetermined time zone stored in the storage unit. Illuminance detection means for detecting the illuminance around the light emitting diode,
The control means controls the first light emitting diode so as to stop or reduce the output of the first light emitting diode when the illuminance detected by the illuminance detecting means is smaller than a predetermined value. The LED lighting fixture apparatus of any one of Claim 1- Claim 3.   The control means controls the first light emitting diode and the second light emitting diode so as to adjust the output of the second light emitting diode when the output of the first light emitting diode is stopped or decreased. The LED lighting apparatus according to any one of claims 1 to 4, wherein:

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