JP2011154946A - Lighting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting system changing the illuminance distribution, according the present position of an object to be illuminated. <P>SOLUTION: The lighting system 101 includes a luminous element 10 having thirty lighting emitting parts EP, a current supply part 4, and a motion sensor 5. The thirty lighting emitting parts EP are classified into three groups EG1 to EG3, having illumination ranges different from one another, and current supply to the thirty lighting-emitting parts EP by the current supply part 4 is controlled separately by each of three groups EG1 to EG3, based on a signal output from the motion sensor 5. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a lighting device, and more particularly to a lighting device including a light emitter having a plurality of light emitting units.

  2. Description of the Related Art Conventionally, an illumination device including a light emitter having a plurality of light emitting units is known. As a structure of this conventional illumination device, for example, each of a plurality of light emitting units is made of an LED (light emitting diode element), and light emitted from each of the plurality of LEDs is used as illumination light (for example, Patent Document 1).

  By the way, in the conventional illumination device using a plurality of LEDs, the plurality of LEDs are usually mounted on the same substrate and thereby modularized. The light emitting sides of the plurality of modularized LEDs are oriented in the same direction.

JP 2009-105020 A

  The illuminance distribution obtained by the conventional illumination device described above is fixed in a state where the illuminance of a predetermined area (area corresponding to the direction in which the light emitting side of the LED is facing) is high. That is, in the conventional lighting device, the illuminance distribution cannot be arbitrarily changed. For this reason, for example, even if there is a request to change the illuminance distribution so that the illuminance at the current position of the illumination object is higher than the illuminance at other positions, the illuminance at the current position of the illumination object is changed to another position. It becomes difficult to make it higher than the illuminance.

  The present invention has been made to solve the above-described problem, and an object thereof is to provide an illuminating device capable of changing an illuminance distribution according to a current position of an illumination object.

  In order to achieve the above object, an illumination device according to one aspect of the present invention includes a light emitter having a plurality of light emitting units each emitting light, a current supply unit that supplies current to the plurality of light emitting units, and an illumination. And a detection unit that detects a current position of the object and outputs a signal indicating the current position of the illumination object to the current supply unit. The plurality of light emitting units are classified into two or more light emitting unit groups having different illumination ranges, and the current supply unit supplies current to the plurality of light emitting units based on a signal output from the detection unit. Are controlled separately for each of the two or more light emitting unit groups.

  In the illumination device according to one aspect, by configuring as described above, for example, when an illumination object moves to an illumination range of a predetermined light-emitting unit group of two or more light-emitting unit groups, the predetermined object Control to make the light output of the light emitting unit group higher than the light output of other light emitting unit groups (control to raise the supply current value to a predetermined light emitting unit group higher than the supply current value to other light emitting unit groups) As a result, the illuminance at the current position of the illumination object can be made higher than the illuminance at other positions. In other words, the illuminance distribution can be changed according to the current position of the illumination object. In addition, when the current supply to the plurality of light emitting units by the current supply unit is controlled separately for each of the two or more light emitting unit groups, the supply current value to the other light emitting unit groups is made lower than before. Even if the supply current value to the predetermined light emitting unit group is increased, it is possible to suppress an increase in power consumption.

  In the illumination device according to the above aspect, among the two or more light emitting unit groups, the light output of a predetermined light emitting unit group including the current position of the object to be illuminated in the illumination range is higher than the light outputs of the other light emitting unit groups. It is preferable that the current supply to the plurality of light emitting units by the current supplying unit is controlled separately for each of two or more light emitting unit groups. If comprised in this way, when there exists a request | requirement of changing illuminance distribution so that the illumination intensity of the present position of an illumination target object may become higher than the illumination intensity of another position, it can respond to the request easily. .

  In the illuminating device according to the above aspect, each of the two or more light emitting unit groups has different illumination ranges by making the light distribution characteristics of the plurality of light emitting units different for each of the two or more light emitting unit groups. More preferably. If comprised in this way, each illumination range of two or more light emission part groups can be made mutually different easily.

  In a configuration in which the light distribution characteristics of the plurality of light emitting units are different for each of two or more light emitting unit groups, the light emitting side of the light emitting body is covered and the light distribution of the light emitted from the light emitting body is controlled. An optical member unit having a light distribution control unit; and a light emitting element including a light emitting element, a light reflecting surface surrounding the light emitting element, and a mounting surface on which the light emitting element is mounted, and Each of the plurality of light emitting units is composed of a portion surrounded by a light reflecting surface, and at least one of the light distribution characteristics of the optical member unit, the direction of the mounting surface, and the light reflecting characteristics of the light reflecting surface is 2 It is preferable that the light distribution characteristics of the plurality of light emitting units are different for each of the two or more light emitting unit groups by making the light emitting units different for each of the two or more light emitting unit groups. If comprised in this way, the light distribution characteristic of a several light emission part can be easily varied for every two or more light emission part groups. That is, it becomes easy to give two or more light emitting unit groups different illumination ranges.

  In the configuration further including the optical member unit, the optical member unit includes a plurality of optical members separated from each other, and the plurality of optical members are paired with each of the two or more light emitting unit groups. It is preferable that the light distribution characteristics of the two or more optical member groups are different for each of the two or more light emitting unit groups. If comprised in this way, the optical member unit from which the light distribution characteristic differed for every two or more light emission part groups can be obtained easily.

  In the configuration in which the optical member unit is separated into a plurality of optical members, it is preferable that each of the plurality of optical members covers two or more light emitting portions. If comprised in this way, even if an optical member unit is isolate | separated into a some optical member, it will suppress that the operation | work which covers a some light emission part with an optical member unit (a some optical member) takes time. it can. However, if the number of light emitting units covered by one optical member is too large, it becomes difficult to perform fine light distribution control, that is, fine illuminance distribution control. Accordingly, the number of light emitting units covered with one optical member is preferably set appropriately according to the application.

  In the configuration in which the optical member unit is separated into a plurality of optical members, it is preferable that the planar shape of the predetermined optical member among the plurality of optical members is a regular polygonal shape or a circular shape. If comprised in this way, if the stripe-shaped groove part formed in the predetermined | prescribed optical member is made into the light distribution control part, the light distribution characteristic of a predetermined | prescribed optical member will be changed with the following methods, for example. be able to.

  That is, when the planar shape of the predetermined optical member is a square shape (regular polygonal shape), the groove portion of the predetermined optical member is brought into contact with the adjacent optical member by rotating the predetermined optical member by 90 °. The direction in which the light extends is inclined by 90 °, thereby changing the light distribution characteristics of the predetermined optical member. Further, when the planar shape of the predetermined optical member is a regular octagonal shape (regular polygonal shape), the predetermined optical member can be rotated without rotating by 45 ° to contact the adjacent optical member. The extending direction of the groove portion is inclined by 45 °, thereby changing the light distribution characteristics of a predetermined optical member. Further, when the planar shape of the predetermined optical member is a circular shape, the predetermined optical member is arbitrarily rotated so that the extending direction of the groove portion of the predetermined optical member is determined without contacting the adjacent optical member. The optical member is tilted according to the rotation angle of the optical member, thereby changing the light distribution characteristic of the predetermined optical member.

  In the configuration in which the planar shape of the predetermined optical member of the plurality of optical members is a regular polygonal shape or a circular shape, one of the concave portion and the convex portion is formed on the light emitter, and the other of the concave portion and the convex portion Is formed in a predetermined optical member, and it is more preferable that the concave portion and the convex portion are fitted. With this configuration, when the light distribution characteristic of the predetermined optical member is changed by rotating the predetermined optical member, the convex portion and the concave portion are positioned at a position where the rotation angle of the predetermined optical member becomes a desired angle. As a result, the rotation angle of the predetermined optical member can be reliably set to a desired angle. Accordingly, when the light distribution characteristic of the predetermined optical member is changed by rotating the predetermined optical member, it is possible to perform light distribution control, that is, control of the illuminance distribution with high accuracy.

  In the configuration further including the optical member unit, preferably, a stripe-shaped groove formed in the optical member unit is used as a light distribution control unit. Of the extending direction of the groove of the optical member unit and the cross-sectional shape of the groove By making at least one different for each of the two or more light emitting unit groups, the light distribution characteristic of the optical member unit is made different for each of the two or more light emitting unit groups. If comprised in this way, the light distribution characteristic of an optical member unit can be easily varied for every two or more light emission part groups.

  In the configuration in which the stripe-shaped groove formed in the optical member unit is the light distribution control unit, two or more light emitting unit groups are arranged from one side to the other side, and the groove of the optical member unit extends. The direction is preferably inclined stepwise from one side to the other side. With this configuration, the light distribution characteristic of the optical member unit is gradually changed from one side to the other side, so that there is less difference in brightness between the light emitting unit groups adjacent to each other, and there is a sense of incongruity. You can realize no natural lighting.

  In a configuration in which the periphery of the light emitting element mounted on the mounting surface is surrounded by a light reflecting surface, and the portion surrounded by the light reflecting surface is a light emitting portion, the mounting portion attached to a predetermined base is from the mounting surface. The mounting surface is inclined with respect to the mounting portion, and the mounting surface is inclined at two or more light emitting unit groups so that the mounting surface faces in two directions. It may be in a different state for each light emitting unit group. If comprised in this way, the direction which a mounting surface faces can be easily varied for every two or more light emission part groups.

  In addition, in a configuration in which the periphery of the light emitting element mounted on the mounting surface is surrounded by a light reflecting surface, and the portion surrounded by the light reflecting surface is a light emitting unit, the mounting is rotatably attached to a predetermined base The portion extends from the mounting surface, and the rotation angle of the mounting portion is made different for each of the two or more light emitting unit groups, so that the direction of the mounting surface is made different for each of the two or more light emitting unit groups. May be. If comprised in this way, the direction which a mounting surface faces can be easily varied for every two or more light emission part groups.

  In this case, a positioning hole into which the positioning pin is inserted is formed in each of the base and the mounting part, and the positioning hole formed in each of the base and the mounting part overlaps with each other. Is more preferably inserted. If comprised in this way, when changing the direction which a mounting surface faces by rotating a mounting part (mounting surface), it will be in each of a base and a mounting part in the position where the direction which a mounting surface faces becomes a desired direction. By making the formed positioning holes overlap each other, the direction in which the mounting surface faces can be surely set to a desired direction. As a result, when the direction of the mounting surface is changed by rotating the mounting portion (mounting surface), it is possible to perform light distribution control, that is, control of illuminance distribution with high accuracy.

  As described above, according to the present invention, it is possible to easily obtain an illumination device capable of changing the illuminance distribution according to the current position of the illumination object.

It is a perspective view of the illuminating device by 1st Embodiment. It is a side view at the time of seeing the illuminating device shown in FIG. 1 from A direction. It is the schematic of the illuminating device by 1st Embodiment. It is a disassembled perspective view (perspective view of a light-emitting body and an optical member unit) of the light emitting module of the illuminating device by 1st Embodiment. It is sectional drawing (sectional drawing of a light emission part) which expanded some light emitting modules of the illuminating device by 1st Embodiment. It is sectional drawing (the figure for demonstrating the light distribution characteristic of an optical member unit) which expanded a part of optical member unit of the illuminating device by 1st Embodiment. It is a figure for demonstrating the illumination intensity distribution obtained by the optical member unit shown in FIG. It is a figure for demonstrating the illumination intensity distribution obtained by the optical member unit shown in FIG. It is the top view which represented typically the optical member unit of the illuminating device by 1st Embodiment. It is sectional drawing (sectional drawing showing the attachment structure of the optical member unit with respect to a light-emitting body) of the light emitting module of the illuminating device by 1st Embodiment. It is a figure for demonstrating the illumination operation | movement of the illuminating device by 1st Embodiment. It is a figure for demonstrating the effect of 1st Embodiment (The figure with which the illuminating device was mounted | worn with the exterior light). It is a figure for demonstrating the effect of 1st Embodiment (The figure with which the illuminating device was mounted | worn with the exterior light). It is the top view which represented typically the optical member unit of the illuminating device by the modification of 1st Embodiment. It is the top view which represented typically the optical member unit of the illuminating device by the modification of 1st Embodiment. It is the top view which represented typically the optical member unit of the illuminating device by the modification of 1st Embodiment. It is a top view for demonstrating the planar shape of the optical member which makes the optical member unit of the illuminating device by the modification of 1st Embodiment. It is a top view for demonstrating the planar shape of the optical member which makes the optical member unit of the illuminating device by the modification of 1st Embodiment. It is a top view for demonstrating the planar shape of the optical member which makes the optical member unit of the illuminating device by the modification of 1st Embodiment. It is sectional drawing (sectional drawing showing the attachment structure of the optical member unit with respect to a light-emitting body) of the light emitting module of the illuminating device by the modification of 1st Embodiment. It is sectional drawing (the figure for demonstrating the light distribution characteristic of an optical member unit) which expanded a part of optical member unit of the illuminating device by the modification of 1st Embodiment. It is a figure for demonstrating the illumination intensity distribution obtained by the optical member unit shown in FIG. It is the top view which expanded a part of optical member unit of the illuminating device by the modification of 1st Embodiment. It is a figure for demonstrating the illumination intensity distribution obtained by the optical member unit shown in FIG. It is a side view of the illuminating device by the modification of 1st Embodiment. It is a side view of the illuminating device by 2nd Embodiment. It is a disassembled perspective view (perspective view of a light-emitting body and an optical member unit) of the light emitting module of the illuminating device by 2nd Embodiment. It is a figure (side view of a mounting substrate) for demonstrating the light distribution control method of the illuminating device by 2nd Embodiment. It is a figure (plan view of a mounting board) for explaining the method of light distribution control of the illuminating device by a 2nd embodiment.

(First embodiment)
Below, with reference to FIGS. 1-11, the illuminating device 101 by 1st Embodiment is demonstrated in detail.

  In the illumination device 101 according to the first embodiment, an elongated light emitting module 1 as shown in FIGS. 1 and 2 is used as a light source, and the light emitting module 1 as the light source is installed on a predetermined base 2. Used in. As shown in FIG. 3, a current supply unit (controller) 4 for supplying a current to the light emitting module 1 is connected to the light emitting module 1 via a connector 3. Furthermore, a human sensor 5 for detecting the current position of the illumination target and outputting a signal indicating the current position of the illumination target to the current supply unit 4 is connected to the current supply unit 4. The human sensor 5 is an example of the “detection unit” in the present invention.

  As shown in FIG. 1 and FIG. 2, the base 2 on which the light emitting module 1 is installed is for fixing the light emitting module 1 at a desired angle. It is obtained by bending along a central line extending in the direction. That is, when the base 2 is viewed in a cross section along the short direction, it is substantially V-shaped. And the two light emitting modules 1 are hold | maintained in the state mutually inclined by installing the light emitting module 1 one by one on a pair of outer side inclined surface of the base 2 processed into the substantially V shape. Note that the number of the light emitting modules 1 installed on each of the pair of outer inclined surfaces of the base 2 may be one, or may be plural (for example, two).

  Furthermore, the plate-like member constituting the base 2 is made of metal, and can dissipate heat generated by the light emitting module 1 or reflect light emitted from the light emitting module 1.

  The light emitting module 1 includes a light emitter 10 and an optical member unit 20U as shown in FIGS. The light emitter 10 emits light by generating light, and the optical member unit 20U controls the light distribution of the light from the light emitter 10.

  The structure of the light emitter 10 includes at least 30 LEDs 11 that actually generate light and a mounting substrate 12 having a substantially rectangular mounting surface 12a. All of the 30 LEDs 11 are mounted on the mounting surface 12 a of the same mounting substrate 12. Although not shown, the 30 LEDs 11 are regularly arranged at a predetermined interval from each other, and 15 LEDs 11 are arranged in the longitudinal direction of the mounting substrate 12, and an LED array including the 15 LEDs 11. Are arranged in two rows in the short direction of the mounting substrate 12.

  A light reflecting member 13 whose outer shape is a substantially rectangular parallelepiped is fixed to the mounting surface 12 a of the mounting substrate 12. The light reflecting member 13 is a member that constitutes the light emitter 10 together with the LED 11 and the mounting substrate 12, and is provided to give directivity to the light from the LED 11. More specifically, a frame-like light reflecting surface 13a for reflecting the light from the LED 11 is formed on the light reflecting member 13, and the light reflecting surface 13a of the light reflecting member 13 reflects the light from the LED 11. As a result, the light from the LED 11 is guided in a predetermined direction.

  The light reflecting surface 13a of the light reflecting member 13 is a surface obtained by opening a through hole in the light reflecting member 13 and depositing metal on the inner wall surface of the through hole. In addition, the light reflecting surface 13a of the light reflecting member 13, that is, the inner wall surface of the through hole opened in the light reflecting member 13, is inclined obliquely in a curved line, so that from one side of the penetrating direction to the other side. It spreads radially. Further, in a state where the light reflecting member 13 is fixed to the mounting surface 12a of the mounting substrate 12, the narrow opening of the through hole is directed to the mounting substrate 12 side, and the wide opening of the through hole is directed to the optical member unit 20U side. ing.

  Further, the number of light reflecting surfaces 13a of the light reflecting member 13 is 30, and they are arranged in the same manner as the arrangement of 30 LEDs 11. Each of the 30 LEDs 11 is individually surrounded by 30 light reflecting surfaces 13 a of the light reflecting member 13.

  In the light emitter 10 having such a structure, a portion surrounded by the light reflecting surface 13a of the light reflecting member 13 (portion where the LED 11 exists) can be referred to as a light emitting portion EP. That is, the light emitter 10 has 30 light emitting portions EP that each generate and emit light. The light from each of the 30 light emitting units EP is subjected to light distribution control by the optical member unit 20U disposed so as to cover the light emitting side of the light emitter 10.

  The optical member unit 20U that performs light distribution control is a light distribution lens, and has a structure in which a stripe-shaped groove 20a that actually performs light distribution control is formed. The optical member unit 20U is attached to the light emitting side of the light emitter 10 so that the groove 20a faces the light emitting side of the light emitter 10. Thereby, when light is emitted from the light emitter 10, the light is incident on the groove 20a of the optical member unit 20U, and thereby light distribution is controlled. The groove 20a of the optical member unit 20U is an example of the “light distribution controller” in the present invention.

  Further, the groove portion 20a of the optical member unit 20U extends linearly in a predetermined direction, and the cross-sectional shape thereof is a triangular shape. In addition, the cross-sectional shape of the groove part 20a of the optical member unit 20U shown in FIG. 5 is only an example, and the cross-sectional shape of the groove part 20a of the optical member unit 20U may be a parabolic shape, for example.

  When light enters the groove portion 20a of the optical member unit 20U, light distribution control as shown in FIG. 6 is performed. That is, light L incident on the inclined surface inclined to one side of the groove 20a of the optical member unit 20U is distributed in the direction of arrow L1 (direction inclined to one side with respect to the front direction) and inclined to the other side. The light L incident on the inclined surface is distributed in the direction of the arrow L2 (the direction inclined to the other side with respect to the front direction). Further, the light L incident on the apex of the groove 20a of the optical member unit 20U is distributed in the direction of the arrow L3 (front direction), but is smaller than the light distributed in the directions of the arrows L1 and L2. The front direction is the normal direction of the light emitting surface of the optical member unit 20U (the surface opposite to the surface on which the groove 20a is formed).

  For this reason, in the light irradiation region irradiated with the light subjected to the light distribution control as shown in FIG. 6, if the elliptical region D is the light irradiation region as shown in FIG. The illuminance of both side regions of the region D1 on the one end side in the longitudinal direction of D and the region D2 on the other end side is increased.

  Moreover, the light distribution direction shown in FIG. 6 can be changed by adjusting the extending direction of the groove 20a of the optical member unit 20U and the cross-sectional shape of the groove 20a. For example, the distance in the longitudinal direction of the light irradiation region D can be increased by adjusting the extending direction of the groove 20a of the optical member unit 20U and the cross-sectional shape of the groove 20a (see FIG. 8).

  Here, in the first embodiment, as shown in FIG. 4, the optical member unit 20 </ b> U is separated into five optical members 20. The five optical members 20 have the same planar shape (rectangular shape). In addition, the five optical members 20 are arranged in a line along the longitudinal direction of the light emitter 10, and each cover six light emitting portions EP.

  Further, the five optical members 20 are classified into three groups OG1 to OG3 having different light distribution characteristics. Specifically, as shown in FIGS. 4 and 9, the group OG <b> 1 includes two optical members 20, and the extending direction of the groove 20 a substantially coincides with the longitudinal direction of the light emitter 10. . The group OG2 includes two optical members 20, and the extending direction of the groove 20a is inclined by about 30 ° with respect to the longitudinal direction of the light emitter 10. Further, the group OG3 includes one optical member 20, and the extending direction of the groove 20a is inclined by about 90 ° with respect to the longitudinal direction of the light emitter 10. The extending direction of the groove 20a is the light emitter. It is almost coincident with the 10 short direction).

  The two optical members 20 included in the group OG1 are first arranged in succession from one side in the longitudinal direction of the light emitter 10 to the other side, and then included in the group OG2. The optical members 20 are continuously arranged, and finally, one optical member 20 included in the group OG3 is arranged. That is, when the optical member unit 20U separated into five optical members 20 is viewed as a whole, the groove 20a is inclined stepwise from one side in the longitudinal direction of the light emitter 10 toward the other side. It has become. In the first embodiment, the number of optical member units 20U used is two, but the extending direction of each groove 20a of the two optical member units 20U is the base 2 (FIGS. 1 and 2). (See Fig. 1) and a center line extending in the longitudinal direction.

  By doing so, as shown in FIG. 4, when the 30 light emitting units EP are classified into three groups EG1 to EG3, and three groups OG1 to OG3 are assigned to the three groups EG1 to EG3, respectively. The alignment characteristics of the 30 light emitting portions EP can be made different for each of the three groups EG1 to EG3. That is, a structure in which the illumination ranges (orientation characteristics) of the three groups EG1 to EG3 are different from each other is obtained.

  For example, as shown in FIG. 10, the five optical members 20 are attached to the light emitters 10 by forming claw portions 20 b on the optical member 20 and engaging portions 13 b on the light reflecting member 13. This is done by engaging the claw portion 20b of the optical member 20 with the engaging portion 13b of the light reflecting member 13. In addition, the method of welding the optical member 20 and the light reflection member 13 with an ultrasonic welder is also considered.

  By the way, in 1st Embodiment, as shown in FIG.3 and FIG.4, although illumination operation | movement is performed by supplying an electric current from the electric current supply part 4 with respect to 30 light emission parts EP. The current supply from the current supply unit 4 to the 30 light emitting units EP can be controlled separately for each of the three groups EG1 to EG3.

  That is, the 30 light emitting units EP classified into the three groups EG1 to EG3 are further classified into five blocks B1 to B5 each including six light emitting units EP. The current supply unit 4 is connected to each of the five blocks B1 to B5, so that the current supply from the current supply unit 4 to each of the five blocks B1 to B5 is performed separately. Yes. The light emitting units EP included in the blocks B1 and B2 belong to the group EG1, the light emitting units EP included in the blocks B3 and B4 belong to the group EG2, and the light emitting units EP included in the block B5 are It belongs to group EG3.

  Thereby, the current supply from the current supply unit 4 to the blocks B1 and B2, the current supply from the current supply unit 4 to the blocks B3 and B4, and the current supply from the current supply unit 4 to the block B5 are separated. By performing the above, current supply from the current supply unit 4 to the 30 light emitting units EP can be controlled separately for each of the three groups EG1 to EG3.

  Furthermore, in the first embodiment, since a signal indicating the current position of the illumination object is output from the human sensor 5 to the current supply unit 4, the current supply unit 4 to 30 light emitting units EP is provided. When the current supply from is controlled separately for each of the three groups EG1 to EG3, the control can be performed based on a signal (current position of the illumination object) output from the human sensor 5. Yes.

  As a specific control operation, when the human sensor 5 detects the current position of the illumination object, a signal indicating the current position of the illumination object is output from the human sensor 5 to the current supply unit 4, and The coordinates of the current position are identified by the current supply unit 4. Furthermore, the current supply unit 4 stores the illumination ranges of the three groups EG1 to EG3 as coordinates, and which of the three groups EG1 to EG3 includes the current position of the illumination object in the illumination range. Is specified by the current supply unit 4. And among the three groups EG1 to EG3, the light output of a predetermined group that includes the current position of the illumination target object in the illumination range is higher than the light output of the other groups. The current supply from the current supply unit 4 is controlled separately for each of the three groups EG1 to EG3.

  As an example, considering the case where the illumination object moves to a point P in the illumination area (area that can be illuminated by the illumination device 101) shown in FIG. 11, the coordinates (x1, y1) are the current position of the illumination object. Is identified by the current supply unit 4. If the group including coordinates (x1, y1) in the illumination range among the three groups EG1 to EG3 is the group EG1, the current supply unit 4 identifies the group EG1 from the three groups EG1 to EG3. The current supply to the thirty light emitting units EP is separately controlled for each of the three groups EG1 to EG3 so that the light output of the group EG1 is higher than the light outputs of the other groups EG2 and EG3.

  In the first embodiment, as described above, the 30 light emitting units EP are classified into three groups EG1 to EG3, and separated into five so as to be paired with each of the three groups EG1 to EG3. By classifying the optical member 20 into three groups OG1 to OG3 and making the light distribution characteristics of the three groups OG1 to OG3 different for each of the three groups EG1 to EG3, the light distribution of 30 light emitting units EP The characteristics can be made different for each of the three groups EG1 to EG3. That is, the three groups EG1 to EG3 can have different light distribution characteristics (illumination ranges).

  Accordingly, for example, as shown in FIGS. 12 and 13, assuming that the illumination device 101 of the first embodiment is an external light mounted on the pole 102, the optics included in the group OG3 (group corresponding to the group EG3). The light distribution in the arrow L11 direction is enhanced by the function of the member 20, and the illuminance in the region corresponding to the arrow L11 direction can be increased. Further, the function of the optical member 20 included in the group OG2 (the group corresponding to the group EG2) increases the light distribution in the direction of the arrow L12, and the illuminance of the region corresponding to the direction of the arrow L12 can be increased. The light whose light distribution is controlled by the optical member 20 included in the group OG1 (group corresponding to the group EG1) mainly illuminates a region corresponding to the arrow L13 direction.

  Furthermore, in the first embodiment, as described above, the current supply unit 4 supplies current to the 30 light emitting units EP based on the signal (current position of the illumination target) output from the human sensor 5. By separately controlling each of the three groups EG1 to EG3, when the illumination object moves to the illumination range of the predetermined group among the three groups EG1 to EG3, the light output of the predetermined group is changed to another group. Can be controlled to increase the light output of the target object (control to increase the supply current value to a given group higher than the supply current value to other groups), and as a result, the illuminance at the current position of the illumination target can be changed to another position. The illuminance can be higher. In other words, the illuminance distribution can be changed according to the current position of the illumination object. In addition, when the current supply from the current supply unit 4 to the 30 light emitting units EP is separately controlled for each of the three groups EG1 to EG3, the supply current value to the other groups is made lower than before. For example, even if the supply current value to a predetermined group is increased, it is possible to suppress an increase in power consumption.

  This effect will be described by taking the outside light shown in FIGS. 12 and 13 as an example. For example, when the illumination object moves to a region corresponding to the direction of the arrow L11, the effect is supplied to the group EG3 according to the movement of the illumination object. Current value to be further increased (the light output of the group EG3 is further increased), thereby increasing the illuminance of the area corresponding to the direction of the arrow L11 (current position of the illumination object) higher than other areas. Is possible. On the other hand, when the illumination object moves to a region corresponding to the arrow L12 direction, the current value supplied to the group EG2 is further increased according to the movement of the illumination object (the light output of the group EG2 is further increased). Accordingly, the illuminance of the area corresponding to the direction of the arrow L12 (the current position of the illumination target) can be made higher than that of the other areas.

  In addition, when making the illumination intensity of the area | region corresponding to arrow L11 direction higher, for example, it controls so that the supply current value per one of 12 light emission parts EP (LED11) included in group EG1 may be 20 mA. At the same time, the supply current value per 12 light emitting units EP (LED11) included in the group EG2 is controlled to be 20 mA, and one of the 6 light emitting units EP (LED11) included in the group EG3 is controlled. Control is performed so that the supply current value per unit becomes 80 mA. On the other hand, when the illuminance of the region corresponding to the direction of the arrow L12 is made higher, for example, control is performed so that the supply current value per 12 light emitting units EP (LEDs 11) included in the group EG1 is 20 mA. At the same time, the supply current value per twelve light emitting units EP (LED11) included in the group EG2 is controlled to be 80 mA, and one of the six light emitting units EP (LED11) included in the group EG3 is controlled. Control is performed so that the supply current value per unit becomes 20 mA.

  In the first embodiment, as described above, the optical member unit 20U is separated into five optical members 20, and is separated into five so as to be paired with each of the three groups EG1 to EG3. The optical member 20 is classified into three groups OG1 to OG3, and the light distribution characteristics of the three groups OG1 to OG3 are made different for each of the three groups EG1 to EG3, so that each of the three groups EG1 to EG3 can be easily changed. An optical member unit 20U having different light distribution characteristics can be obtained. In this case, even if the optical member unit 20U is separated into the five optical members 20 by making each of the five optical members 20 cover the six light emitting portions EP, the optical member unit It is possible to suppress the time for attaching 20U (five optical members 20) to the light emitter 10 from taking time.

  In the first embodiment, as described above, the light distribution control is performed with the stripe-shaped grooves 20a formed in the optical member unit 20U, so that the extending direction of the grooves 20a of the optical member unit 20U is 3. By making it differ for every three groups EG1-EG3, the light distribution characteristic of the optical member unit 20U can be easily made different for every three groups EG1-EG3.

  In the first embodiment, as described above, the direction in which the groove 20a of the optical member unit 20U extends is gradually inclined from one side in the longitudinal direction of the light emitter 10 toward the other side, thereby making the optical member unit. Since the light distribution characteristics of 20U gradually change from one side to the other side of the light emitter 10, the difference in brightness between the adjacent groups EG1 and EG2 and the adjacent groups EG2 and EG2 The difference in brightness with EG3 is reduced. Thereby, natural lighting without a sense of incongruity can be realized.

  In the configuration of the first embodiment, the number of optical members 20 included in each group, the light distribution characteristics of each group, the number of groups, and the like are not particularly limited and can be changed according to the application. is there.

  For example, although not shown, the two optical members 20 included in the group OG1 may be integrated into one, and the two optical members 20 included in the group OG2 may be integrated into one. In this case, the total number of the optical members 20 is three, and the time required for attaching the optical member unit 20U (three optical members 20) to the light emitter 10 can be further shortened. Furthermore, the optical member unit 20U may be divided into 30 optical members 20, and each of the 30 optical members 20 may cover one light emitting portion EP. Light distribution control (finer illuminance distribution control) can be performed. However, the time required for attaching the optical member unit 20U (30 optical members 20) to the light emitter 10 is increased.

  Further, as shown in FIG. 14, the number of optical members 20 included in the group OG1 is three, the number of optical members 20 included in the group OG2 is one, and the optical members 20 included in the group OG3 The number may be one.

  Further, as shown in FIG. 15, the inclination of the groove 20a of the optical member 20 included in the group OG2 may be about 45 °, or the group OG2 is eliminated as shown in FIG. The number of optical members 20 included may be increased.

  Also, the planar shape of the optical member 20 can be changed. For example, it may be square (see FIG. 17), regular octagon (see FIG. 18), or circular. (See FIG. 19).

  In this way, when the planar shape of the optical member 20 is a square, when the optical member 20 is rotated by 90 °, the direction in which the groove 20a of the optical member 20 extends without contacting the adjacent optical member 20 Can be tilted by 90 °. Further, when the planar shape of the optical member 20 is a regular octagon, when the optical member 20 is rotated by 45 °, the extending direction of the groove 20a of the optical member 20 is 45 without contacting the adjacent optical member 20. Can be tilted in steps. Further, when the planar shape of the optical member 20 is circular, when the optical member 20 is arbitrarily rotated, the extending direction of the groove portion 20a of the optical member 20 is determined without contacting the adjacent optical member 20. It can be tilted according to 20 rotation angles. Note that FIGS. 17 to 19 illustrate a state in which the four light emitting units EP are covered by one optical member 20, but one light emitting unit EP is covered by one optical member 20. You may do it.

  When using the optical member 20 having the planar shape shown in FIGS. 17 to 19, for example, as shown in FIG. 20, the claw portion 20 b whose tip branches off at the rotation center of the optical member 20. And the engaging portion 13b with which the claw portion 20b of the optical member 20 engages is formed on the light reflecting member 13, so that the optical member 20 is rotated by a desired angle. Attachment to the light reflecting member 13 becomes possible. Further, a positioning convex portion 20c is formed on the optical member 20, and a positioning concave portion 13c is formed on the light reflecting member 13, and the optical member 20 is projected at a position where the rotation angle of the optical member 20 becomes a desired angle. If the portion 20c and the concave portion 13c of the light reflecting member 13 are fitted, the rotation angle of the optical member 20 can be reliably set to a desired angle.

  In the configuration of the first embodiment, a one-side light distribution lens having a groove 20a formed to have a cross-sectional shape as shown in FIG. 21 may be used as the optical member unit 20U (optical member 20). . When such an optical member unit 20U (optical member 20) is used, the light distribution in the direction of the arrow L1 is increased and the light distribution in the direction of the arrow L2 is weakened. Therefore, as shown in FIG. 22, only the illuminance of the region D1 on one end side in the longitudinal direction of the light irradiation region D can be increased.

  Furthermore, as shown in FIG. 23, a front light distribution lens having grooves 20a formed concentrically may be used as the optical member unit 20U (optical member 20). When such an optical member unit 20U (optical member 20) is used, only the illuminance of the region D3 near the center of the light irradiation region D can be increased as shown in FIG.

  In the configuration of the first embodiment, the shape of the base 2 and the installation location of the light emitting module 1 with respect to the base 2 are not particularly limited. For example, as shown in FIG. 25, the light emitting module 1 may be installed on the inner inclined surface of the base 2. In this case, if the optical member unit 20U is a mirror glass, even if the light L from the other light emitting module 1 enters the one light emitting module 1, the light L is reflected by the optical member unit 20U. Irradiation can be performed more efficiently.

(Second Embodiment)
Below, with reference to FIGS. 26-29, the illuminating device 201 by 2nd Embodiment is demonstrated in detail.

  In the lighting device 201 according to the second embodiment, a light emitting module 5 including a light emitter 30 and an optical member unit 40U as shown in FIG. 26 is used, and the light emitting module 5 is installed on a predetermined base 6. Yes. Although not shown, a current supply unit is connected to the light emitting module 5, and a human sensor (detection unit) is connected to the current supply unit. The current supply unit and the human sensor are the same as the current supply unit 4 and the human sensor 5 of the first embodiment, respectively.

  As shown in FIGS. 26 and 27, the light emitter 30 which is one of the constituent members of the light emitting module 5 includes an LED 31, a mounting substrate 32 having a mounting surface 32a, and a light reflecting member 33 having a light reflecting surface 33a. The LED 31 is mounted on the mounting surface 32 a of the mounting substrate 32, and the light reflecting surface 33 a of the light reflecting member 33 surrounds the LED 31. For this reason, the part surrounded by the light reflecting surface 33a of the light reflecting member 33 (the part where the LED 31 exists) becomes the light emitting part EP.

  Further, the mounting substrate 32 has an attachment portion 32b connected to the mounting surface 32a. By attaching the attachment portion 32b of the mounting substrate 32 to the base 6, the base 6 of the light emitter 30 (light emitting module 5). Has been installed. The mounting substrate 32 is bent so that the mounting surface 32a is inclined with respect to the surface of the mounting portion 32b. Thereby, when the mounting portion 32 b of the mounting substrate 32 is attached to the base 6, the mounting surface 32 a of the mounting substrate 32 is inclined with respect to the installation surface of the base 6.

  And the actual attachment to the base 6 of the attachment part 32b of the mounting substrate 32 is made | formed using the shaft-shaped attachment member 34 which can attach an attachment target object rotatably. For this reason, the mounting board 32 is rotatable about the mounting member 34 as a rotation axis.

  A positioning hole 35 is formed in each of the base 6 and the mounting portion 32 b of the mounting substrate 32, and a positioning pin 36 is inserted into the positioning hole 35. As a result, the rotation of the mounting substrate 32 with the mounting member 34 as the rotation axis is restricted. Note that the positioning holes 35 of the base 6 and the mounting portion 32b of the mounting board 32 overlap each other at a position where the rotation angle of the mounting board 32 becomes a desired angle.

  The number of such light emitters 30 installed on the base 6 is two or more, and thus the number of light emitting portions EP is plural. Two or more light emitters 30 are classified into three groups EG1 to EG3. That is, the plurality of light emitting portions EP are classified into three groups EG1 to EG3. Note that, for example, six light emitting units EP are provided for each of the two or more light emitters 30.

  The optical member unit 40U, which is another component of the light emitting module 5, has a structure in which a stripe-shaped groove 40a as a light distribution control unit is formed. The optical member unit 40U is separated into two or more optical members 40, and individually covers the light emitting sides of the two or more light emitters 30.

  Here, in the second embodiment, the light distribution characteristics of the optical member unit 40U, the direction in which the mounting surface 32a of the mounting substrate 32 faces (the direction in which the light emitting body 30 emits light), and the light reflecting surface of the light reflecting member 33 At least one of the light reflection characteristics of 33a is made different for each of the three groups EG1 to EG3, whereby the light distribution characteristics (illumination ranges) of the three groups EG1 to EG3 are made different from each other. .

  By the way, when the light distribution characteristic of the optical member unit 40U is made different for each of the three groups EG1 to EG3, the extending direction of the groove 40a of the optical member 40 may be made different for each of the three groups EG1 to EG3. The cross-sectional shape (type of light distribution lens) of the groove 40a of the optical member 40 may be varied for each of the three groups EG1 to EG3.

  When the direction in which the mounting surface 32a of the mounting substrate 32 faces differs for each of the three groups EG1 to EG3, the inclination angle θ (see FIG. 28) of the mounting surface 32a of the mounting substrate 32 is set to the three groups EG1 to EG3. The rotation angle φ (see FIG. 29) of the mounting substrate 32 may be different for each of the three groups EG1 to EG3.

  Further, when the light reflection characteristics of the light reflecting member 33 are made different for each of the three groups EG1 to EG3, the cross-sectional shape (depth, inclination angle, etc.) of the light reflecting surface 33a can be made different for each of the three groups EG1 to EG3. That's fine.

  In addition, in the second embodiment, current supply to a plurality of light emitting units EP by a current supply unit (not shown) is controlled separately for each of the three groups EG1 to EG3, and the control is performed by a human sensor. This is performed based on a signal output from (not shown). That is, in the second embodiment, among the three groups EG1 to EG3, the light output of a predetermined group that includes the current position of the illumination target object in the illumination range is higher than the light output of other groups (illumination target The current supply from the current supply unit to the plurality of light emitting units EP can be controlled separately for each of the three groups EG1 to EG3 so that the illuminance at the current position of the object is higher than the illuminance at other positions. It becomes possible.

  In the second embodiment, the same effect as in the first embodiment can be obtained.

  It should be thought that embodiment disclosed this time is an illustration and restrictive at no points. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

2, 6 Base 4 Current supply unit 5 Human sensor (detection unit)
10, 30 Light emitter 11, 31 Light emitting diode element (light emitting element)
12, 32 Mounting substrate 12a, 32a Mounting surface 13, 33 Light reflecting member 13a, 33a Light reflecting surface 13b Engaging portion 13c Recessed portion 20U, 40U Optical member unit 20, 40 Optical member 20a, 40a Groove portion (light distribution control portion)
20b Claw portion 20c Convex portion 32b Mounting portion 34 Mounting member 35 Positioning hole 36 Positioning pin EP Light emitting portion EG1, EG2, EG3 group (light emitting portion group)
OG1, OG2, OG3 group (Optical member group)

Claims (13)

A light emitter having a plurality of light emitting portions each emitting light;
A current supply unit for supplying current to the plurality of light emitting units;
A detection unit that detects a current position of the illumination object and outputs a signal indicating the current position of the illumination object to the current supply unit;
The plurality of light emitting units are classified into two or more light emitting unit groups having different illumination ranges, and based on a signal output from the detection unit, the current supply unit supplies the plurality of light emitting units to the plurality of light emitting units. A lighting device, wherein current supply is controlled separately for each of the two or more light emitting unit groups.   Among the two or more light emitting unit groups, the current supply is performed so that the light output of a predetermined light emitting unit group including the current position of the illumination object in the illumination range is higher than the light output of other light emitting unit groups. The lighting device according to claim 1, wherein the current supply to the plurality of light emitting units by the unit is controlled separately for each of the two or more light emitting unit groups.   The light distribution characteristics of the plurality of light emitting units are different for each of the two or more light emitting unit groups, so that each of the two or more light emitting unit groups has a different illumination range. The illumination device according to claim 1 or 2. An optical member unit that covers the light emitting side of the light emitter and further has a light distribution control unit that controls light distribution of light emitted from the light emitter,
The light emitting element includes a light emitting element, a light reflecting surface surrounding the light emitting element, and a mounting surface on which the light emitting element is mounted, and each of the plurality of light emitting portions is the light reflecting surface. It consists of a part surrounded by
The at least one of the light distribution characteristic of the optical member unit, the direction of the mounting surface, and the light reflection characteristic of the light reflecting surface is made different for each of the two or more light emitting unit groups. The lighting device according to claim 3, wherein the light distribution characteristics of the light emitting units are different for each of the two or more light emitting unit groups. The optical member unit includes a plurality of optical members separated from each other, and the plurality of optical members are combined into two or more optical member groups so as to be paired with each of the two or more light emitting unit groups. Classified,
The illumination device according to claim 4, wherein light distribution characteristics of the two or more optical member groups are different for each of the two or more light emitting unit groups.   The lighting device according to claim 5, wherein each of the plurality of optical members covers two or more of the light emitting units.   The lighting device according to claim 5 or 6, wherein a planar shape of a predetermined optical member of the plurality of optical members is a regular polygonal shape or a circular shape. One of the concave portion and the convex portion is formed on the light emitter, and the other of the concave portion and the convex portion is formed on the predetermined optical member,
The lighting device according to claim 7, wherein the concave portion and the convex portion are fitted. A striped groove formed in the optical member unit is a light distribution control unit,
At least one of the extending direction of the groove portion of the optical member unit and the cross-sectional shape of the groove portion is made different for each of the two or more light emitting portion groups, whereby the light distribution characteristic of the optical member unit is the two or more light distribution characteristics. The lighting device according to claim 4, wherein the lighting device group is in a different state for each light emitting unit group. The two or more light emitting unit groups are arranged from one side to the other side,
The lighting device according to claim 9, wherein a direction in which the groove portion of the optical member unit extends is inclined stepwise from the one side toward the other side. A mounting portion attached to a predetermined base extends from the mounting surface, and the mounting surface is inclined with respect to the mounting portion,
By changing the inclination angle of the mounting surface with respect to the mounting portion for each of the two or more light emitting unit groups, the direction in which the mounting surface faces differs for each of the two or more light emitting unit groups. The illumination device according to any one of claims 4 to 10, wherein An attachment portion that is rotatably attached to a predetermined base extends from the mounting surface,
The rotation angle of the mounting part is made different for each of the two or more light emitting part groups, so that the direction in which the mounting surface faces is made different for each of the two or more light emitting part groups. The illumination device according to any one of claims 4 to 11. A positioning hole into which a positioning pin is inserted is formed in each of the base and the mounting portion,
The lighting device according to claim 12, wherein the positioning pin is inserted into the positioning hole in a state where the positioning holes formed in the base and the attachment portion overlap each other.

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