WO2021186851A1 - Light-emitting device - Google Patents

Light-emitting device Download PDF

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Publication number
WO2021186851A1
WO2021186851A1 PCT/JP2021/000160 JP2021000160W WO2021186851A1 WO 2021186851 A1 WO2021186851 A1 WO 2021186851A1 JP 2021000160 W JP2021000160 W JP 2021000160W WO 2021186851 A1 WO2021186851 A1 WO 2021186851A1
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WO
WIPO (PCT)
Prior art keywords
light emitting
emitting elements
row
annular
light
Prior art date
Application number
PCT/JP2021/000160
Other languages
French (fr)
Japanese (ja)
Inventor
督教 鈴木
和昭 齋藤
Original Assignee
ミネベアミツミ株式会社
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Filing date
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Application filed by ミネベアミツミ株式会社 filed Critical ミネベアミツミ株式会社
Publication of WO2021186851A1 publication Critical patent/WO2021186851A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2113/00—Combination of light sources
    • F21Y2113/10—Combination of light sources of different colours
    • F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to a light emitting device.
  • the shape of the irradiation light is also rectangular.
  • the shape of the irradiation light may be required to be close to a round shape (including not only a circular shape but also an elliptical shape, the same applies hereinafter). ..
  • miniaturization is required, and the number of light emitting elements that can be used may be limited. However, when the number of light emitting elements is small, the shape of the irradiation light tends to be square.
  • the number of light emitting elements actually used is reduced when only one type of light emitting element is emitted, and the shape of the irradiation light is changed. It tends to be square.
  • an object of the present invention is to provide a light emitting device capable of making the shape of the irradiation light closer to a round shape.
  • the light emitting device of the present invention has an annular light emitting portion in which light emitting elements of a plurality of colors are arranged along a circle or an ellipse on a substrate, and a plurality of light emitting portions of the same color as the annular light emitting portion in a region inside the annular light emitting portion.
  • An inner light emitting unit in which the elements are arranged is provided, the light emitting intensity of the plurality of color light emitting elements is controlled for each color, and the plurality of color light emitting elements are arranged in the annular light emitting unit so as to repeat a predetermined order. It is characterized by that.
  • the inner light emitting portion is a first row portion formed by at least one row of element rows in which a plurality of the light emitting elements are arranged in a predetermined direction, and the plurality of the light emitting elements intersect with the first row portion. It is preferable to have a second row portion composed of at least one row of element rows arranged in such a manner.
  • the annular light emitting portion is at least one said in an intermediate portion located between a position where the element row of the first row portion is extended and a position where the element row of the second row portion is extended. It is preferable to have a light emitting element.
  • light emitting elements of a plurality of colors are arranged so as to repeat a predetermined order in each of the element rows of the first row portion and the second row portion.
  • the first row portion and the second row portion each include a plurality of rows of the element rows
  • the electrical connection portion includes an electrical connection portion for connecting the light emitting elements of the same color in series. It is preferable to have a connecting line connecting the light emitting elements arranged in a direction inclined with respect to the direction of the element row among the first row portion and the second row portion.
  • the inner light emitting portion has an inner annular portion in which the light emitting elements of a plurality of colors are arranged along the inside of the annular light emitting portion so as to repeat a predetermined order.
  • the square-shaped light emitting element is arranged along the circle, and the light emitting element is orthogonal to a line segment extending in the radial direction from the center of the circle and along the circle. It is preferable to have an orthogonal side.
  • FIG. 1 is an exploded perspective view of a light emitting device 1 according to an embodiment of the present invention
  • FIG. 2 is a plan view of a light emitting device main body 10 of the light emitting device 1.
  • the light emitting device 1 includes a light emitting device main body 10 and an accommodating portion 20 for accommodating the light emitting device main body 10.
  • the light emitting device main body 10 includes a flat plate-shaped substrate 2, a plurality of light emitting elements 3 and 4 provided on the substrate 2, and an electrical connection portion 5 formed on the substrate 2.
  • the accommodating portion 20 includes a cylindrical case body 200, a lens 201 provided at one end of the case body 200, and a heat sink 202 that closes the other end side of the case body 200 and contacts the light emitting device body 10. ..
  • the light emitting device 1 is used to irradiate a spot-shaped irradiation light toward an object or a target area, for example, and the light emitting elements 3 and 4 are connected to a power source and supplied to each of the light emitting elements 3 and 4. Power can be controlled. That is, the emission intensities of the two-color light emitting elements 3 and 4 are controlled for each color, and the emission intensity and the emission color of the light emitting device 1 as a whole are variable.
  • the light emitting elements 3 and 4 emit light, the light is condensed by the lens 201 and irradiated with the light.
  • the substrate 2 is along the XY plane
  • the directions orthogonal to each other in the XY plane are the X direction and the Y direction
  • the direction orthogonal to the XY plane is the Z direction.
  • the left side in FIG. 2 is one side in the X direction
  • the right side is the other side in the X direction
  • the upper side is one side in the Y direction
  • the lower side is the other side in the Y direction.
  • the substrate 2 is, for example, a printed circuit board, and a metal electrical connection portion 5 is formed on the insulating substrate, and a plurality of arrangement portions on which the light emitting elements 3 and 4 can be arranged are formed on the surface.
  • the arrangement portion formed on the substrate 2 may be formed in a concave shape, for example, and may be capable of positioning the light emitting elements 3 and 4.
  • the light emitting elements 3 and 4 are all LEDs, and their light emitting colors are different from each other.
  • the light emitting element 3 is a warm color LED
  • the light emitting element 4 is a cold color LED. That is, the light emitting device 1 is provided with two color light emitting elements 3 and 4 which are white and have different color temperatures. That is, "different colors” includes cases where the color temperatures are different.
  • some of the plurality of light emitting elements 3 and 4 are designated by the reference numerals “3” and “4”, but the shaded light emitting elements 3 are also related to the other light emitting elements. It is assumed that the white one is the light emitting element 4.
  • the electrical connection unit 5 has a first connection line 51 that connects a plurality of light emitting elements 3 in series, and a second connection line 52 that connects a plurality of light emitting elements 4 in series. Further, the first connection line 51 and the second connection line 52 are independently connected to the power source, and the power supplied to the plurality of light emitting elements 3 and the power supplied to the plurality of light emitting elements 4 can be obtained. It is designed to be controlled independently.
  • the detailed arrangement of the light emitting elements 3 and 4 will be described below.
  • a total of four light emitting elements 3 and 4 are arranged in the X direction to form an element row L1.
  • a total of four light emitting elements 3 and 4 are arranged in the X direction to form an element row L2.
  • the first row portion 6 is formed by arranging the two rows of element rows L1 and L2 in the Y direction.
  • the light emitting elements 3 and the light emitting elements 4 are alternately arranged in the element row L1, and the light emitting elements 3 and the light emitting elements 4 are alternately arranged in the element row L2.
  • the light emitting element 3 is arranged at the position on one side of the element row L1 in the X direction, and the light emitting element 4 is arranged at the position on the most side of the element row L2 in the X direction. That is, in the first row portion 6, light emitting elements 3 and 4 having different light emitting colors are arranged in the Y direction.
  • a total of four light emitting elements 3 and 4 are arranged in the Y direction to form an element row L3. Similarly, a total of four light emitting elements 3 and 4 are arranged in the Y direction to form an element row L4.
  • the second row portion 7 is formed by arranging the two rows of element rows L3 and L4 in the X direction.
  • the element rows L3 and L4 of the second row portion 7 are orthogonal to the element rows L1 and L2 of the first row portion 6, and a total of four light emitting elements 3 and 4 are shared at the intersecting portions.
  • the light emitting element 3 and the light emitting element 4 are arranged alternately in the element row L3, and the light emitting element 3 and the light emitting element 4 are arranged alternately in the element row L4.
  • the light emitting element 3 is arranged at the position on one side of the element row L3 in the Y direction, and the light emitting element 4 is arranged at the position on the most side of the element row L4 in the Y direction. That is, in the second row portion 7, light emitting elements 3 and 4 having different light emitting colors are arranged in the X direction.
  • the inner light emitting portion 8 is formed by the first row portion 6 and the second row portion 7.
  • the light emitting element 4 is arranged at the position L11 extending the element train L1 on one side in the X direction, and the light emitting element 3 is arranged at the position L12 extending on the other side in the X direction.
  • the light emitting element 3 is arranged at a position L21 extending the element train L2 on one side in the X direction, and the light emitting element 4 is arranged at a position L22 extending on the other side in the X direction.
  • the light emitting element 4 is arranged at a position L31 extending the element train L3 on one side in the Y direction, and the light emitting element 3 is arranged at a position L32 extending on the other side in the Y direction.
  • the light emitting element 3 is arranged at a position L41 extending the element train L4 on one side in the Y direction, and the light emitting element 4 is arranged at a position L42 extending on the other side in the Y direction.
  • a light emitting element 4 is provided in the intermediate portion PM23 located between the position L21 and the position L32, and a light emitting element 3 is provided in the intermediate portion PM42 located between the position L42 and the position L22.
  • the light emitting element 4 is provided in the intermediate portion PM14 located between the positions, and the light emitting element 3 is provided in the intermediate portion PM31 located between the positions L31 and the position L11.
  • the annular light emitting portion 9 is formed by a total of 12 light emitting elements 3 and 4 provided at the positions L11, L12, L21, L22, L31, L32, L41, L42 and the intermediate portions PM23, PM42, PM14, and PM31.
  • the plurality of light emitting elements 3 and 4 forming the annular light emitting portion 9 are arranged along the circumference of the circle C0 passing through each position and each intermediate portion, and the light emitting elements 3 and the light emitting elements 4 are alternately arranged ( That is, they are arranged so as to repeat a predetermined order).
  • the inner light emitting unit 8 is formed by arranging light emitting elements 3 and 4 having the same color as the light emitting elements 3 and 4 constituting the annular light emitting unit 9 in the inner region of the annular light emitting unit 9.
  • two-color light emitting elements 3 and 4 are alternately arranged in the X direction or the Y direction, including the light emitting elements 3 and 4 arranged at positions extended in the X direction or the Y direction, respectively. ..
  • the intermediate portion PM23 is adjacent to the light emitting element 4 at one end in the X direction of the element train L2 on the other side in the Y direction, and is X with respect to the light emitting element 4 at the other end in the Y direction of the element row L3. It is located closer to the circumference of the circle C0 than the virtual adjacent portion PN23 adjacent to one side in the direction. Further, the intermediate portion PM23 is provided with a light emitting element 4 having the same color as the light emitting element 4 located closest to the element rows L2 and L3.
  • the intermediate portions PM42, PM14, and PM31 are also located closer to the circumference of the circle C0 than the virtual adjacent portions PN42, PN14, and PN31, and are located closest to the element trains L1 to L4.
  • Light emitting elements 3 and 4 having the same color as the elements 3 and 4 are provided.
  • All the light emitting elements 3 and 4 are formed in a square shape (square shape).
  • the square shape of the light emitting elements 3 and 4 means that the shape of the light emitting surface is square, that is, the shape of the light emitting element means the shape of the light emitting surface.
  • all the light emitting elements 3 and 4 are arranged so that a pair of sides extend along the X direction and the other pair of sides extend along the Y direction.
  • the light emitting elements 3 and 4 at positions L11, L12, L21, L22, L31, L32, L41 and L42 have a pair of sides extending along the X direction and the other pair of sides extending in the Y direction.
  • the light emitting elements 3 and 4 of the intermediate portions PM23, PM42, PM14, and PM31 are arranged so as to extend along the sides, and their sides are inclined with respect to the X direction and the Y direction (for example, having an inclination angle of 45 °). ) Have been placed. That is, the light emitting elements 3 and 4 of the intermediate portions PM23, PM42, PM14, and PM31 have sides along the circumference of the circle C0.
  • the first connecting line 51 for connecting the light emitting elements 3 has connecting portions 511 to 514 for connecting the light emitting elements 3 arranged in the directions inclined in the X direction and the Y direction.
  • the connecting portion 511 connects the light emitting element 3 at the position L32 and the light emitting element 3 at the position L21.
  • the connection portion 512 is a light emitting element 3 at the other end in the Y direction of the element row L4, a light emitting element 3 shared by the element row L2 and the element row L3, and light emitting at one end in the X direction of the element row L1.
  • the element 3 and the light emitting element 3 of the intermediate portion PM31 are connected.
  • the connection portion 513 includes a light emitting element 3 of the intermediate portion PM42, a light emitting element 3 at the other end of the element row L2 in the X direction, a light emitting element 3 shared by the element row L1 and the element row L4, and an element row L3. Is connected to the light emitting element 3 at one end on one side in the Y direction.
  • the connecting portion 514 connects the light emitting element 3 at the position L12 and the light emitting element 3 at the position L41.
  • the first connecting wire 51 is composed of one continuous connecting wire (metal thin film), the connecting portions 511 to 514 are connected in series, and all the light emitting elements 3 in the annular light emitting portion 9 and the inner light emitting portion 8 are connected in series. Connected to. In the illustrated example, the connecting portions 511 to 514 are in series in this order, and extend so as to meander (reciprocate) in the directions inclined in the X direction and the Y direction when the position L21 is set as the start position. ..
  • the first connection line 51 is connected to the power supply with the connection portion 511 as one end side, the connection portion 514 as the other end side, and is connected to the power supply via a crossover portion 515 straddling the connection portion 523 described later.
  • the second connecting line 52 that connects the light emitting elements 4 to each other has connecting portions 521 to 523 that connect the light emitting elements 4 that are arranged mainly in the directions inclined in the X direction and the Y direction.
  • the connection portion 521 includes a light emitting element 4 at position L42, a light emitting element 4 at the other end of the element row L3 in the Y direction, a light emitting element 4 of the intermediate portion PM23, and one of the element rows L2 in the X direction.
  • the light emitting element 4 at the side end and the light emitting element 4 at the position L11 are connected.
  • the connection unit 522 connects the light emitting element 4 shared by the element row L4 and the element row L2 and the light emitting element 4 shared by the element row L3 and the element row L1.
  • the connection portion 523 emits light from the light emitting element 4 at the position L22, the light emitting element 4 at the other end in the X direction of the element row L1, the light emitting element 4 from the intermediate PM14, and the light emitting element 4 at the one end in the Y direction of the element row L4.
  • the element 4 and the light emitting element 4 at the position L31 are connected.
  • connection portion 521 and the connection portion 522 are connected by a crossover portion 524 that straddles the connection portion 512, and the connection portion 522 and the connection portion 523 are connected by a crossover portion 525 that straddles the connection portion 513.
  • the connecting portions 521 to 523 are connected in this order, and when the position L11 is set as the starting position, the connecting portions 521 to 523 extend so as to meander (reciprocate) in the directions inclined in the X direction and the Y direction.
  • the second connection line 52 is connected to the power supply with the connection portion 521 on one end side and the crossover portion 526 straddling the connection portion 512, and is connected to the power supply with the connection portion 523 on the other end side.
  • the light emitting intensity of the two color light emitting elements 3 and 4 is controlled for each color, and the light emitting color is variable (color matching is controlled). It may be used to make only the light emitting element 4 emit light.
  • the two-color light emitting elements 3 and 4 are alternately arranged in the annular light emitting unit 9, the shape of the irradiation light is rounded even when only one of the light emitting elements 3 and 4 is made to emit light. It is easy to keep in shape.
  • a configuration in which light emitting elements 3 and 4 are arranged in adjacent portions PN23, PN42, PN14, and PN31 instead of the intermediate portions PM23, PM42, PM14, and PM31 is used as a comparative example, and the first embodiment and the comparative example are compared. ..
  • this comparative example light emitting elements 3 and 4 having a color different from that of the light emitting elements 3 and 4 located closest to the element trains L1 to L4 are arranged in the adjacent portions PN23, PN42, PN14, and PN31 (that is,).
  • the light emitting element 4 is arranged in the adjacent portions PN31 and 42, and the light emitting element 3 is arranged in the adjacent portions PN23 and PN14).
  • the light emitting elements 3 and 4 when focusing on only one of the light emitting elements 3 and 4, it has a rectangular arrangement having four sides in the directions inclined in both the X direction and the Y direction, and the light emitting elements 3 and 4 have a rectangular arrangement. When only one of them is made to emit light, the shape of the irradiation light tends to be rectangular.
  • the annular light emitting portion 9 in which the two color light emitting elements 3 and 4 are alternately arranged along the circumference of the circle C0 is formed, only one of the light emitting elements 3 and 4 is formed. Even when the light is emitted, it is easy to keep the shape of the irradiation light in a round shape. Further, the annular light emitting unit 9 can suppress color unevenness of the emitted color.
  • each of the element rows L1 to L4 of the first row portion 6 and the second row portion 7 the two color light emitting elements 3 and 4 are alternately arranged, so that the light emitting color is emitted inside the annular light emitting portion 9. Color unevenness can be suppressed.
  • the connecting portions 511 to 514 and 521 to 523 connect the light emitting elements 3 and 4 which are arranged in the directions inclined with respect to both the X direction and the Y direction among the first row portion 6 and the second row portion 7. As a result, it is possible to prevent the wiring from becoming redundant and to connect the light emitting elements 3 and 4 to each other in a space-saving manner.
  • FIG. 3 shows the light emitting device main body 10B of the light emitting device of the second embodiment.
  • the arrangement of the light emitting elements 3 and 4 in the annular light emitting unit 9B is different from that of the first embodiment.
  • the two color light emitting elements 3 and 4 are alternately arranged along the circumference of the circle C0, and the distance between the two adjacent light emitting elements 3 and 4 is constant.
  • the light emitting elements 3 and 4 are provided at the positions L11, L12, L21, L22, L31, L32, L41, and L42 extending the element trains L1 to L4, respectively, whereas in the second embodiment, the light emitting elements 3 and 4 are provided.
  • the light emitting elements 3 and 4 are provided at positions closer to the intermediate portions PM23, PM42, PM14, and PM31 than the positions L11, L12, L21, L22, L31, L32, L41, and L42.
  • the light emitting elements 3 and 4 forming the annular light emitting portion 9B all have a pair of sides orthogonal to a line segment extending in the radial direction from the center of the circle C0. Of the pair of sides, the side located on the outside extends along the circumference of the circle C0.
  • the electrical connection unit 5 that connects the light emitting elements 3 and 4 has a third connection line 53 that connects the light emitting elements 3 to each other and a fourth connection line 54 that connects the light emitting elements 4 to each other.
  • the third connection line 53 has connection portions 531 to 533.
  • the connection portion 531 includes a light emitting element 3 near the position L41, a light emitting element 3 at the Y-direction one-sided end of the element train L3, a light-emitting element 3 at the intermediate PM31, and an X-direction one-sided end of the element train L1.
  • the light emitting element 3 and the light emitting element 3 near the position L21 are connected.
  • the connection portion 532 includes a light emitting element 3 near the position L12, a light emitting element 3 shared by the element row L1 and the element row L4, a light emitting element 3 shared by the element row L2 and the element row L3, and a position L32. A light emitting element 3 in the vicinity is connected.
  • the connecting portion 533 connects the light emitting element 3 of the intermediate portion PM42, the light emitting element 3 at the other end of the element row L2 in the X direction, and the light emitting element 3 at the other end of the element row L4 in the Y direction.
  • the third connecting line 53 is composed of one continuous connecting line (metal thin film), the connecting portions 531 to 533 are connected in series, and all the light emitting elements 3 in the annular light emitting unit 9B and the inner light emitting unit 8 are connected in series. Connected to. In the illustrated example, the connecting portions 531 to 533 are in series in this order, and extend so as to meander (reciprocate) in the directions inclined in the X direction and the Y direction.
  • the third connection line 53 is connected to the power supply with the connection portion 531 as one end side and is connected to the power supply with the connection portion 533 as the other end side.
  • the fourth connection line 54 has connection portions 541 to 543.
  • the connecting portion 541 connects the light emitting element 4 near the position L31 and the light emitting element 4 near the position L11.
  • the connection portion 542 includes a light emitting element 4 of the intermediate portion PM14, a light emitting element 4 at one end of the element row L4 in the Y direction, a light emitting element 4 shared by the element row L1 and the element row L3, and an element row L2.
  • the light emitting element 4 at one end on one side in the X direction and the light emitting element 4 at the intermediate portion PM23 are connected.
  • the connection portion 543 includes a light emitting element 4 near the position L22, a light emitting element 4 at the other end of the element row L1 in the X direction, a light emitting element 4 shared by the element row L2 and the element row L4, and an element row L3.
  • the light emitting element 4 at the other end in the Y direction and the light emitting element 4 near the position L42 are connected.
  • the connecting portion 542 and the connecting portion 543 are connected by a crossover portion 544 that straddles the connecting portion 532.
  • the connecting portions 541 to 543 are connected in this order and extend so as to meander (reciprocate) in the directions inclined in the X direction and the Y direction.
  • the fourth connection line 54 is connected to the power supply with the connection portion 541 as one end side and is connected to the power supply with the connection portion 543 as the other end side.
  • the annular light emitting portion 9B in which the two color light emitting elements 3 and 4 are alternately arranged along the circumference of the circle C0 is formed, so that the irradiation light is emitted. It is easy to keep the shape of.
  • the light emitting elements 3 and 4 are arranged at equal intervals in the annular light emitting unit 9B, it is easy to keep the shape of the irradiation light in a round shape. Further, it is possible to suppress color unevenness of the emitted color in the annular light emitting unit 9B.
  • the light emitting elements 3 and 4 forming the annular light emitting portion 9B are orthogonal to the line segment extending in the radial direction from the center of the circle C0 and have a side along the circumference of the circle C0. It is easy to make the outer peripheral edge of 9B a shape along the circumference of the circle C0, and it is easy to keep the shape of the irradiation light in a round shape.
  • the light emitting device 1 of the present invention has been described above with reference to preferred embodiments, the light emitting device of the present invention is not limited to the configuration of the above embodiment.
  • the light emitting elements 3 and 4 forming the annular light emitting portion 9B have sides orthogonal to a line segment extending in the radial direction from the center of the circle C0.
  • the sides of all the light emitting elements 3 and 4 may extend along the X direction or the Y direction.
  • only the orientations of the light emitting elements 3 and 4 provided in the intermediate portions PM23, PM42, PM14, and PM31 are different from those of the first embodiment.
  • one light emitting element 3 or 4 is provided in each of the intermediate portions PM23, PM42, PM14, and PM31, but two or more light emitting elements may be provided in each intermediate portion.
  • two light emitting elements 3 and 4 are provided in each of the intermediate portions PM31 and PM42, and one light emitting element 3 and 4 are provided in each of the intermediate portions PM23 and PM14. ..
  • light emitting elements 3 and 4 are provided at positions shifted to the other side in the Y direction with respect to the positions L11 and L21, and light is emitted at positions shifted to one side in the X direction with respect to the positions L32 and L42.
  • Elements 3 and 4 are provided, and light emitting elements 3 and 4 are provided at positions shifted to one side in the Y direction with respect to positions L12 and L22, respectively, and light emitting elements 3 and 4 are provided on the other side in the X direction with respect to positions L31 and L41. Light emitting elements 3 and 4 are provided at each of the positions shifted to.
  • the modified example 3 shown in FIG. 6 differs from the modified example 2 in that the sides of the light emitting elements 3 and 4 provided in the intermediate portions PM23, PM42, PM14, and PM31 extend along the X direction or the Y direction. There is.
  • the inner light emitting portion 8 has the first row portion 6 and the second row portion 7, but the configuration is not limited to this.
  • the inner light emitting portion has an inner annular portion in which two color light emitting elements 3 and 4 are alternately arranged along the inside of the annular light emitting portion.
  • the inner annular portion 81 is formed by the four light emitting elements 3 and 4.
  • the light emitting element 3 is arranged inside the inner annular portion 81, and the inner light emitting portion 8B is formed by the inner annular portion 81 and the inner light emitting element 3.
  • Five light emitting elements 3 and 4 are arranged in the X direction, the light emitting element 3 is arranged in the center, and all the others are light emitting elements 4.
  • Five light emitting elements 3 and 4 are arranged in the Y direction, light emitting elements 4 are arranged at both ends, and all others are light emitting elements 3.
  • One light emitting element 3 is arranged between the end of the row of the light emitting elements 3 and 4 arranged in the X direction and the end of the row of the light emitting elements 3 and 4 arranged in the Y direction.
  • the position and orientation of the light emitting element 3 of the above are the same as those of the light emitting elements 3 and 4 provided in the intermediate portions PM23, PM42, PM14, and PM31 in the first embodiment.
  • the annular light emitting portion 9C is formed along the circumference of the circle C0.
  • the modified example 5 shown in FIG. 8 is different from the modified example 4 in that the sides of the light emitting elements 3 of the intermediate portions PM23, PM42, PM14, and PM31 are along the X direction or the Y direction.
  • the annular light emitting portion 9D is formed along the circumference of the circle C0.
  • the modified example 6 shown in FIG. 9 is different from the modified example 4 in that the light emitting element 3 is not provided inside the inner annular portion 81.
  • the modified example 7 shown in FIG. 10 is different from the modified example 5 in that the light emitting element 4 is not provided inside the inner annular portion 81.
  • the modified example 9 shown in FIG. 12 is different from the modified example 8 in that the sides of the light emitting elements 3 and 4 of the intermediate portions PM23, PM42, PM14, and PM31 are along the X direction or the Y direction.
  • the modified example 10 shown in FIG. 13 is different from the modified example 8 in that the light emitting element 3 is not provided inside the inner annular portion 81.
  • the modified example 11 shown in FIG. 14 is different from the modified example 9 in that the light emitting element 3 is not provided inside the inner annular portion 81.
  • the light emitting elements 3 and 4 are assumed to be square, but the shape of the light emitting element is not limited to a square shape, and may be another polygonal shape or a circular shape. It may be present, and it may be set appropriately.
  • the light emitting elements 3 and 4 of the annular light emitting unit 9 are arranged along the circumference of the circle C0, but the light emitting elements may be arranged along the ellipse in the annular light emitting unit. .. That is, the light emitting elements may be arranged in a circular or elliptical shape in the annular light emitting portion so that the desired irradiation light shape can be obtained by the light emitting device.
  • the light emitting device 1 uses two color light emitting elements 3 and 4, but the light emitting device may use three or more color light emitting elements.
  • the light emitting elements of three or more colors may be arranged so as to repeat a predetermined order (for example, red, blue, and green are repeated along the clockwise direction).

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Abstract

Provided is a light-emitting device capable of creating a nearly circular irradiating light. A light-emitting device (1) is provided with an annular light-emitting portion (9) in which light-emitting elements (3, 4) of a plurality of colors are arranged along a circle (C0) or an ellipse on a substrate (2), and an inner light-emitting portion (8) which is disposed in a region inside the annular light-emitting portion (9) and in which a plurality of light-emitting elements (3, 4) of the same colors as the colors of the annular light-emitting portion (9) are arranged. The light-emitting intensity of the light-emitting elements (3, 4) of the plurality of colors is controlled on a color-by-color basis. In the annular light-emitting portion (9), the light-emitting elements (3, 4) of the plurality of colors are arranged so as to repeat a predetermined sequence.

Description

発光装置Light emitting device
　本発明は、発光装置に関する。 The present invention relates to a light emitting device.
　従来、基板上に複数の発光素子が設けられた発光モジュールとして、発光色が異なる複数の種類の発光素子が配置されたものが提案されている（例えば、特許文献１参照）。特許文献１に記載された発光モジュールでは、複数種類の発光素子を交互に配置することにより、照明面における色ムラの抑制を図っている。 Conventionally, as a light emitting module in which a plurality of light emitting elements are provided on a substrate, a module in which a plurality of types of light emitting elements having different emission colors are arranged has been proposed (see, for example, Patent Document 1). In the light emitting module described in Patent Document 1, color unevenness on the illumination surface is suppressed by alternately arranging a plurality of types of light emitting elements.
特開２０１４－１８７２８４号公報Japanese Unexamined Patent Publication No. 2014-187284
　特許文献１に記載された発光モジュールでは、複数の発光素子によって長方形状の照明面が形成されていることから、照射光の形状も長方形状となる。これに対し、例えばスポット型の照明器具等においては、照射光の形状を丸形（外縁形状が円のものだけでなく楕円のものも含む、以下同様）に近づけることが要求される場合がある。また、照明器具の種類によっては小型化が要求され、使用可能な発光素子の数が制限される場合がある。しかしながら、発光素子の数が少なくなると、照射光の形状が角形となりやすい。さらに、発光色が異なる複数種類の発光素子を用いるとともに調色制御する構成では、１種類の発光素子のみを発光させる際に、実際に使用する発光素子の数が少なくなり、照射光の形状が角形となりやすい。 In the light emitting module described in Patent Document 1, since a rectangular illumination surface is formed by a plurality of light emitting elements, the shape of the irradiation light is also rectangular. On the other hand, for example, in a spot-type luminaire, the shape of the irradiation light may be required to be close to a round shape (including not only a circular shape but also an elliptical shape, the same applies hereinafter). .. Further, depending on the type of lighting equipment, miniaturization is required, and the number of light emitting elements that can be used may be limited. However, when the number of light emitting elements is small, the shape of the irradiation light tends to be square. Further, in a configuration in which a plurality of types of light emitting elements having different emission colors are used and color matching is controlled, the number of light emitting elements actually used is reduced when only one type of light emitting element is emitted, and the shape of the irradiation light is changed. It tends to be square.
　したがって、本発明は、以上の背景に鑑みてなされたものであり、照射光の形状を丸形に近づけることができる発光装置を提供することを目的とする。 Therefore, the present invention has been made in view of the above background, and an object of the present invention is to provide a light emitting device capable of making the shape of the irradiation light closer to a round shape.
　上記課題は、以下の本発明により解決される。即ち、本発明の発光装置は、基板上において複数色の発光素子が円又は楕円に沿って並んだ環状発光部と、前記環状発光部の内側の領域に当該環状発光部と同色の複数の発光素子が配置された内側発光部と、を備え、前記複数色の発光素子の発光強度が色毎に制御され、前記環状発光部において、前記複数色の発光素子が所定の順序を繰り返すように並ぶことを特徴とする。 The above problem is solved by the following invention. That is, the light emitting device of the present invention has an annular light emitting portion in which light emitting elements of a plurality of colors are arranged along a circle or an ellipse on a substrate, and a plurality of light emitting portions of the same color as the annular light emitting portion in a region inside the annular light emitting portion. An inner light emitting unit in which the elements are arranged is provided, the light emitting intensity of the plurality of color light emitting elements is controlled for each color, and the plurality of color light emitting elements are arranged in the annular light emitting unit so as to repeat a predetermined order. It is characterized by that.
　本発明において、前記内側発光部は、複数の前記発光素子が所定方向に並んだ少なくとも１列の素子列によって構成された第１列部と、複数の前記発光素子が前記第１列部と交差するように並んだ少なくとも１列の素子列によって構成された第２列部と、を有することが好ましい。 In the present invention, the inner light emitting portion is a first row portion formed by at least one row of element rows in which a plurality of the light emitting elements are arranged in a predetermined direction, and the plurality of the light emitting elements intersect with the first row portion. It is preferable to have a second row portion composed of at least one row of element rows arranged in such a manner.
　本発明において、前記環状発光部は、前記第１列部の素子列を延長した位置と、前記第２列部の素子列を延長した位置と、の間に位置する中間部に少なくとも１つの前記発光素子を有することが好ましい。 In the present invention, the annular light emitting portion is at least one said in an intermediate portion located between a position where the element row of the first row portion is extended and a position where the element row of the second row portion is extended. It is preferable to have a light emitting element.
　本発明において、前記第１列部及び前記第２列部の素子列のそれぞれにおいて、複数色の発光素子が所定の順序を繰り返すように並んでいることが好ましい。 In the present invention, it is preferable that light emitting elements of a plurality of colors are arranged so as to repeat a predetermined order in each of the element rows of the first row portion and the second row portion.
　本発明において、同色の前記発光素子同士を直列に接続する電気接続部を備え、前記第１列部及び前記第２列部は、それぞれ複数列の前記素子列を有し、前記電気接続部は、前記第１列部及び前記第２列部のうち前記素子列の方向に対して傾斜した方向に並ぶ前記発光素子同士を接続する接続線を有することが好ましい。 In the present invention, the first row portion and the second row portion each include a plurality of rows of the element rows, and the electrical connection portion includes an electrical connection portion for connecting the light emitting elements of the same color in series. It is preferable to have a connecting line connecting the light emitting elements arranged in a direction inclined with respect to the direction of the element row among the first row portion and the second row portion.
　本発明において、前記内側発光部は、複数色の前記発光素子が前記環状発光部の内側に沿って所定の順序を繰り返すように並んだ内側環状部を有することが好ましい。 In the present invention, it is preferable that the inner light emitting portion has an inner annular portion in which the light emitting elements of a plurality of colors are arranged along the inside of the annular light emitting portion so as to repeat a predetermined order.
　本発明において、前記環状発光部において、四角形状の前記発光素子が円に沿って配置され、当該発光素子が、当該円の中心から径方向に延びる線分に対して直交するとともに当該円に沿った辺を有することが好ましい。 In the present invention, in the annular light emitting portion, the square-shaped light emitting element is arranged along the circle, and the light emitting element is orthogonal to a line segment extending in the radial direction from the center of the circle and along the circle. It is preferable to have an orthogonal side.
本発明の一例である第１実施形態にかかる発光装置の分解斜視図である。It is an exploded perspective view of the light emitting device which concerns on 1st Embodiment which is an example of this invention. 本発明の一例である第１実施形態にかかる発光装置の発光装置本体の平面図である。It is a top view of the light emitting device main body of the light emitting device which concerns on 1st Embodiment which is an example of this invention. 本発明の一例である第２実施形態にかかる発光装置の発光装置本体の平面図である。It is a top view of the light emitting device main body of the light emitting device which concerns on 2nd Embodiment which is an example of this invention. 本発明の変形例１の発光装置における発光素子の配置を示す平面図である。It is a top view which shows the arrangement of the light emitting element in the light emitting device of the modification 1 of this invention. 本発明の変形例２の発光装置における発光素子の配置を示す平面図である。It is a top view which shows the arrangement of the light emitting element in the light emitting device of the modification 2 of this invention. 本発明の変形例３の発光装置における発光素子の配置を示す平面図である。It is a top view which shows the arrangement of the light emitting element in the light emitting device of the modification 3 of this invention. 本発明の変形例４の発光装置における発光素子の配置を示す平面図である。It is a top view which shows the arrangement of the light emitting element in the light emitting device of the modification 4 of this invention. 本発明の変形例５の発光装置における発光素子の配置を示す平面図である。It is a top view which shows the arrangement of the light emitting element in the light emitting device of the modification 5 of this invention. 本発明の変形例６の発光装置における発光素子の配置を示す平面図である。It is a top view which shows the arrangement of the light emitting element in the light emitting device of the modification 6 of this invention. 本発明の変形例７の発光装置における発光素子の配置を示す平面図である。It is a top view which shows the arrangement of the light emitting element in the light emitting device of the modification 7 of this invention. 本発明の変形例８の発光装置における発光素子の配置を示す平面図である。It is a top view which shows the arrangement of the light emitting element in the light emitting device of the modification 8 of this invention. 本発明の変形例９の発光装置における発光素子の配置を示す平面図である。It is a top view which shows the arrangement of the light emitting element in the light emitting device of the modification 9 of this invention. 本発明の変形例１０の発光装置における発光素子の配置を示す平面図である。It is a top view which shows the arrangement of the light emitting element in the light emitting device of the modification 10 of this invention. 本発明の変形例１１の発光装置における発光素子の配置を示す平面図である。It is a top view which shows the arrangement of the light emitting element in the light emitting device of the modification 11 of this invention.
　以下、本発明の実施形態について図面を参照しながら説明する。図１は、本発明の一例である実施形態にかかる発光装置１の分解斜視図であり、図２は、発光装置１の発光装置本体１０の平面図である。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of a light emitting device 1 according to an embodiment of the present invention, and FIG. 2 is a plan view of a light emitting device main body 10 of the light emitting device 1.
［第１実施形態］
　本実施形態に係る発光装置１は、図１に示すように、発光装置本体１０と、発光装置本体１０を収容する収容部２０と、を備える。発光装置本体１０は、図２に示すように、平板状の基板２と、基板２上に設けられた複数の発光素子３、４と、基板２に形成された電気接続部５と、を備える。収容部２０は、円筒状のケース本体２００と、ケース本体２００の一端に設けられたレンズ２０１と、ケース本体２００の他端側を閉塞するとともに発光装置本体１０に接触するヒートシンク２０２と、を備える。発光装置１は、例えば対象物や対象領域に向けてスポット状の照射光を照射するように用いられ、発光素子３、４が電源に接続されるとともに、発光素子３、４のそれぞれに供給される電力が制御可能となっている。即ち、２色の発光素子３、４の発光強度が色毎に制御され、発光装置１全体として発光強度及び発光色が可変となっている。発光素子３、４が発光すると、レンズ２０１によって集光されて光が照射されるようになっている。 [First Embodiment]
As shown in FIG. 1, the light emitting device 1 according to the present embodiment includes a light emitting device main body 10 and an accommodating portion 20 for accommodating the light emitting device main body 10. As shown in FIG. 2, the light emitting device main body 10 includes a flat plate-shaped substrate 2, a plurality of light emitting elements 3 and 4 provided on the substrate 2, and an electrical connection portion 5 formed on the substrate 2. .. The accommodating portion 20 includes a cylindrical case body 200, a lens 201 provided at one end of the case body 200, and a heat sink 202 that closes the other end side of the case body 200 and contacts the light emitting device body 10. .. The light emitting device 1 is used to irradiate a spot-shaped irradiation light toward an object or a target area, for example, and the light emitting elements 3 and 4 are connected to a power source and supplied to each of the light emitting elements 3 and 4. Power can be controlled. That is, the emission intensities of the two-color light emitting elements 3 and 4 are controlled for each color, and the emission intensity and the emission color of the light emitting device 1 as a whole are variable. When the light emitting elements 3 and 4 emit light, the light is condensed by the lens 201 and irradiated with the light.
　以降の説明において、基板２がＸＹ平面に沿うものとし、ＸＹ平面内において互いに直交する方向をＸ方向及びＹ方向とし、ＸＹ平面に対して直交する方向をＺ方向とする。また、図２における左側をＸ方向一方側とするとともに右側をＸ方向他方側とし、上側をＹ方向一方側とするとともに下側をＹ方向他方側とする。 In the following description, it is assumed that the substrate 2 is along the XY plane, the directions orthogonal to each other in the XY plane are the X direction and the Y direction, and the direction orthogonal to the XY plane is the Z direction. Further, the left side in FIG. 2 is one side in the X direction, the right side is the other side in the X direction, the upper side is one side in the Y direction, and the lower side is the other side in the Y direction.
　基板２は、例えばプリント基板あって、絶縁性基板に金属製の電気接続部５が形成されるとともに、発光素子３、４を配置可能な複数の配置部が表面に形成されている。基板２に形成された配置部は、例えば凹状に形成され、発光素子３、４を位置決めすることができるものであればよい。 The substrate 2 is, for example, a printed circuit board, and a metal electrical connection portion 5 is formed on the insulating substrate, and a plurality of arrangement portions on which the light emitting elements 3 and 4 can be arranged are formed on the surface. The arrangement portion formed on the substrate 2 may be formed in a concave shape, for example, and may be capable of positioning the light emitting elements 3 and 4.
　発光素子３、４は、いずれもＬＥＤであり、発光色が互いに異なっている。例えば、発光素子３が暖色ＬＥＤであり、発光素子４が寒色ＬＥＤである。即ち、発光装置１には、白色であり色温度が互いに異なる２色の発光素子３、４が設けられている。即ち、「色が異なる」とは、色温度が異なる場合も含むものとする。図２においては、複数の発光素子３、４のうち一部に符号「３」、「４」を付しているが、他の発光素子についても、網掛け状のものが発光素子３であり、白抜きのものが発光素子４であるものとする。 The light emitting elements 3 and 4 are all LEDs, and their light emitting colors are different from each other. For example, the light emitting element 3 is a warm color LED, and the light emitting element 4 is a cold color LED. That is, the light emitting device 1 is provided with two color light emitting elements 3 and 4 which are white and have different color temperatures. That is, "different colors" includes cases where the color temperatures are different. In FIG. 2, some of the plurality of light emitting elements 3 and 4 are designated by the reference numerals “3” and “4”, but the shaded light emitting elements 3 are also related to the other light emitting elements. It is assumed that the white one is the light emitting element 4.
　電気接続部５は、複数の発光素子３同士を直列に接続する第１接続線５１と、複数の発光素子４同士を直列に接続する第２接続線５２と、を有する。また、第１接続線５１と第２接続線５２とは、電源に対して独立に接続されており、複数の発光素子３への供給電力と、複数の発光素子４への供給電力と、が独立に制御されるようになっている。 The electrical connection unit 5 has a first connection line 51 that connects a plurality of light emitting elements 3 in series, and a second connection line 52 that connects a plurality of light emitting elements 4 in series. Further, the first connection line 51 and the second connection line 52 are independently connected to the power source, and the power supplied to the plurality of light emitting elements 3 and the power supplied to the plurality of light emitting elements 4 can be obtained. It is designed to be controlled independently.
　以下に、発光素子３、４の詳細な配置について説明する。まず、合計４つの発光素子３、４がＸ方向に並ぶことにより、素子列Ｌ１が形成される。同様に、合計４つの発光素子３、４がＸ方向に並ぶことにより、素子列Ｌ２が形成される。２列の素子列Ｌ１、Ｌ２がＹ方向に並ぶことにより、第１列部６が形成される。素子列Ｌ１において発光素子３と発光素子４とが交互に並び、素子列Ｌ２において発光素子３と発光素子４とが交互に並ぶ。また、素子列Ｌ１のうち最もＸ方向一方側の位置に発光素子３が配置され、素子列Ｌ２のうち最もＸ方向一方側の位置に発光素子４が配置される。即ち、第１列部６において、互いに発光色の異なる発光素子３、４がＹ方向に並ぶ。 The detailed arrangement of the light emitting elements 3 and 4 will be described below. First, a total of four light emitting elements 3 and 4 are arranged in the X direction to form an element row L1. Similarly, a total of four light emitting elements 3 and 4 are arranged in the X direction to form an element row L2. The first row portion 6 is formed by arranging the two rows of element rows L1 and L2 in the Y direction. The light emitting elements 3 and the light emitting elements 4 are alternately arranged in the element row L1, and the light emitting elements 3 and the light emitting elements 4 are alternately arranged in the element row L2. Further, the light emitting element 3 is arranged at the position on one side of the element row L1 in the X direction, and the light emitting element 4 is arranged at the position on the most side of the element row L2 in the X direction. That is, in the first row portion 6, light emitting elements 3 and 4 having different light emitting colors are arranged in the Y direction.
　合計４つの発光素子３、４がＹ方向に並ぶことにより、素子列Ｌ３が形成される。同様に、合計４つの発光素子３、４がＹ方向に並ぶことにより、素子列Ｌ４が形成される。２列の素子列Ｌ３、Ｌ４がＸ方向に並ぶことにより、第２列部７が形成される。第２列部７の素子列Ｌ３、Ｌ４は、第１列部６の素子列Ｌ１、Ｌ２と直交し、且つ、交差する部分において合計４個の発光素子３、４が共有されている。素子列Ｌ３において発光素子３と発光素子４とが交互に並び、素子列Ｌ４において発光素子３と発光素子４とが交互に並ぶ。また、素子列Ｌ３のうち最もＹ方向一方側の位置に発光素子３が配置され、素子列Ｌ４のうち最もＹ方向一方側の位置に発光素子４が配置される。即ち、第２列部７において、互いに発光色の異なる発光素子３、４がＸ方向に並ぶ。第１列部６と第２列部７とによって内側発光部８が形成される。 A total of four light emitting elements 3 and 4 are arranged in the Y direction to form an element row L3. Similarly, a total of four light emitting elements 3 and 4 are arranged in the Y direction to form an element row L4. The second row portion 7 is formed by arranging the two rows of element rows L3 and L4 in the X direction. The element rows L3 and L4 of the second row portion 7 are orthogonal to the element rows L1 and L2 of the first row portion 6, and a total of four light emitting elements 3 and 4 are shared at the intersecting portions. The light emitting element 3 and the light emitting element 4 are arranged alternately in the element row L3, and the light emitting element 3 and the light emitting element 4 are arranged alternately in the element row L4. Further, the light emitting element 3 is arranged at the position on one side of the element row L3 in the Y direction, and the light emitting element 4 is arranged at the position on the most side of the element row L4 in the Y direction. That is, in the second row portion 7, light emitting elements 3 and 4 having different light emitting colors are arranged in the X direction. The inner light emitting portion 8 is formed by the first row portion 6 and the second row portion 7.
　素子列Ｌ１をＸ方向一方側に延長した位置Ｌ１１に発光素子４が配置され、Ｘ方向他方側に延長した位置Ｌ１２に発光素子３が配置される。素子列Ｌ２をＸ方向一方側に延長した位置Ｌ２１に発光素子３が配置され、Ｘ方向他方側に延長した位置Ｌ２２に発光素子４が配置される。 The light emitting element 4 is arranged at the position L11 extending the element train L1 on one side in the X direction, and the light emitting element 3 is arranged at the position L12 extending on the other side in the X direction. The light emitting element 3 is arranged at a position L21 extending the element train L2 on one side in the X direction, and the light emitting element 4 is arranged at a position L22 extending on the other side in the X direction.
　素子列Ｌ３をＹ方向一方側に延長した位置Ｌ３１に発光素子４が配置され、Ｙ方向他方側に延長した位置Ｌ３２に発光素子３が配置される。素子列Ｌ４をＹ方向一方側に延長した位置Ｌ４１に発光素子３が配置され、Ｙ方向他方側に延長した位置Ｌ４２に発光素子４が配置される。 The light emitting element 4 is arranged at a position L31 extending the element train L3 on one side in the Y direction, and the light emitting element 3 is arranged at a position L32 extending on the other side in the Y direction. The light emitting element 3 is arranged at a position L41 extending the element train L4 on one side in the Y direction, and the light emitting element 4 is arranged at a position L42 extending on the other side in the Y direction.
　位置Ｌ２１と位置Ｌ３２との間に位置する中間部ＰＭ２３に発光素子４が設けられ、位置Ｌ４２と位置Ｌ２２との間に位置する中間部ＰＭ４２に発光素子３が設けられ、位置Ｌ１２と位置Ｌ４１との間に位置する中間部ＰＭ１４に発光素子４が設けられ、位置Ｌ３１と位置Ｌ１１との間に位置する中間部ＰＭ３１に発光素子３が設けられる。位置Ｌ１１、Ｌ１２、Ｌ２１、Ｌ２２、Ｌ３１、Ｌ３２、Ｌ４１、Ｌ４２及び中間部ＰＭ２３、ＰＭ４２、ＰＭ１４、ＰＭ３１に設けられた合計１２個の発光素子３、４によって、環状発光部９が形成される。 A light emitting element 4 is provided in the intermediate portion PM23 located between the position L21 and the position L32, and a light emitting element 3 is provided in the intermediate portion PM42 located between the position L42 and the position L22. The light emitting element 4 is provided in the intermediate portion PM14 located between the positions, and the light emitting element 3 is provided in the intermediate portion PM31 located between the positions L31 and the position L11. The annular light emitting portion 9 is formed by a total of 12 light emitting elements 3 and 4 provided at the positions L11, L12, L21, L22, L31, L32, L41, L42 and the intermediate portions PM23, PM42, PM14, and PM31.
　環状発光部９を形成する複数の発光素子３、４は、各位置及び各中間部を通過する円Ｃ０の円周に沿って配置されるとともに、発光素子３と発光素子４とが交互に（即ち所定の順序を繰り返すように）配置される。内側発光部８は、環状発光部９の内側の領域に、環状発光部９を構成する発光素子３、４と同色の発光素子３、４が配置されることで形成されている。 The plurality of light emitting elements 3 and 4 forming the annular light emitting portion 9 are arranged along the circumference of the circle C0 passing through each position and each intermediate portion, and the light emitting elements 3 and the light emitting elements 4 are alternately arranged ( That is, they are arranged so as to repeat a predetermined order). The inner light emitting unit 8 is formed by arranging light emitting elements 3 and 4 having the same color as the light emitting elements 3 and 4 constituting the annular light emitting unit 9 in the inner region of the annular light emitting unit 9.
　素子列Ｌ１～Ｌ４は、それぞれＸ方向又はＹ方向に延長した位置に配置された発光素子３、４も含めて、Ｘ方向又はＹ方向において２色の発光素子３、４が交互に並んでいる。 In the element rows L1 to L4, two-color light emitting elements 3 and 4 are alternately arranged in the X direction or the Y direction, including the light emitting elements 3 and 4 arranged at positions extended in the X direction or the Y direction, respectively. ..
　中間部ＰＭ２３は、素子列Ｌ２のＸ方向一方側端部の発光素子４に対してＹ方向他方側に隣り合い、且つ、素子列Ｌ３のＹ方向他方側端部の発光素子４に対してＸ方向一方側に隣り合う仮想的な隣接部ＰＮ２３よりも、円Ｃ０の円周近くに位置する。また、中間部ＰＭ２３には、素子列Ｌ２、Ｌ３のうち最も近くに位置する発光素子４と同色の発光素子４が設けられる。同様に、中間部ＰＭ４２、ＰＭ１４、ＰＭ３１も、仮想的な隣接部ＰＮ４２、ＰＮ１４、ＰＮ３１よりも、円Ｃ０の円周近くに位置し、且つ、素子列Ｌ１～Ｌ４のうち最も近くに位置する発光素子３、４と同色の発光素子３、４が設けられる。 The intermediate portion PM23 is adjacent to the light emitting element 4 at one end in the X direction of the element train L2 on the other side in the Y direction, and is X with respect to the light emitting element 4 at the other end in the Y direction of the element row L3. It is located closer to the circumference of the circle C0 than the virtual adjacent portion PN23 adjacent to one side in the direction. Further, the intermediate portion PM23 is provided with a light emitting element 4 having the same color as the light emitting element 4 located closest to the element rows L2 and L3. Similarly, the intermediate portions PM42, PM14, and PM31 are also located closer to the circumference of the circle C0 than the virtual adjacent portions PN42, PN14, and PN31, and are located closest to the element trains L1 to L4. Light emitting elements 3 and 4 having the same color as the elements 3 and 4 are provided.
　全ての発光素子３、４は、正方形状（四角形状）に形成されている。ここで、発光素子３、４が正方形状であるとは、発光面の形状が正方形であることを意味し、即ち、発光素子の形状とは発光面の形状を指す。内側発光部８において、全ての発光素子３、４は、一対の辺がＸ方向に沿って延び、他の一対の辺がＹ方向に沿って延びるように配置される。環状発光部９において、位置Ｌ１１、Ｌ１２、Ｌ２１、Ｌ２２、Ｌ３１、Ｌ３２、Ｌ４１、Ｌ４２の発光素子３、４は、一対の辺がＸ方向に沿って延び、他の一対の辺がＹ方向に沿って延びるように配置され、中間部ＰＭ２３、ＰＭ４２、ＰＭ１４、ＰＭ３１の発光素子３、４は、各辺がＸ方向及びＹ方向に対して傾斜して（例えば４５°の傾斜角度を有して）配置されている。即ち、中間部ＰＭ２３、ＰＭ４２、ＰＭ１４、ＰＭ３１の発光素子３、４は、円Ｃ０の円周に沿うような辺を有している。 All the light emitting elements 3 and 4 are formed in a square shape (square shape). Here, the square shape of the light emitting elements 3 and 4 means that the shape of the light emitting surface is square, that is, the shape of the light emitting element means the shape of the light emitting surface. In the inner light emitting unit 8, all the light emitting elements 3 and 4 are arranged so that a pair of sides extend along the X direction and the other pair of sides extend along the Y direction. In the annular light emitting unit 9, the light emitting elements 3 and 4 at positions L11, L12, L21, L22, L31, L32, L41 and L42 have a pair of sides extending along the X direction and the other pair of sides extending in the Y direction. The light emitting elements 3 and 4 of the intermediate portions PM23, PM42, PM14, and PM31 are arranged so as to extend along the sides, and their sides are inclined with respect to the X direction and the Y direction (for example, having an inclination angle of 45 °). ) Have been placed. That is, the light emitting elements 3 and 4 of the intermediate portions PM23, PM42, PM14, and PM31 have sides along the circumference of the circle C0.
　次に、電気接続部５による発光素子３、４の接続態様の詳細について説明する。発光素子３同士を接続する第１接続線５１は、Ｘ方向及びＹ方向に傾斜する方向に並んだ発光素子３同士を接続する接続部５１１～５１４を有する。具体的には、接続部５１１は、位置Ｌ３２の発光素子３と、位置Ｌ２１の発光素子３と、を接続する。接続部５１２は、素子列Ｌ４のＹ方向他方側端部の発光素子３と、素子列Ｌ２と素子列Ｌ３とに共有された発光素子３と、素子列Ｌ１のＸ方向一方側端部の発光素子３と、中間部ＰＭ３１の発光素子３と、を接続する。接続部５１３は、中間部ＰＭ４２の発光素子３と、素子列Ｌ２のＸ方向他方側端部の発光素子３と、素子列Ｌ１と素子列Ｌ４とに共有された発光素子３と、素子列Ｌ３のＹ方向一方側端部の発光素子３と、を接続する。接続部５１４は、位置Ｌ１２の発光素子３と、位置Ｌ４１の発光素子３と、を接続する。 Next, the details of the connection mode of the light emitting elements 3 and 4 by the electrical connection unit 5 will be described. The first connecting line 51 for connecting the light emitting elements 3 has connecting portions 511 to 514 for connecting the light emitting elements 3 arranged in the directions inclined in the X direction and the Y direction. Specifically, the connecting portion 511 connects the light emitting element 3 at the position L32 and the light emitting element 3 at the position L21. The connection portion 512 is a light emitting element 3 at the other end in the Y direction of the element row L4, a light emitting element 3 shared by the element row L2 and the element row L3, and light emitting at one end in the X direction of the element row L1. The element 3 and the light emitting element 3 of the intermediate portion PM31 are connected. The connection portion 513 includes a light emitting element 3 of the intermediate portion PM42, a light emitting element 3 at the other end of the element row L2 in the X direction, a light emitting element 3 shared by the element row L1 and the element row L4, and an element row L3. Is connected to the light emitting element 3 at one end on one side in the Y direction. The connecting portion 514 connects the light emitting element 3 at the position L12 and the light emitting element 3 at the position L41.
　第１接続線５１は、連続した１本の接続線（金属薄膜）によって構成され、接続部５１１～５１４が直列に接続され、環状発光部９及び内側発光部８における全ての発光素子３が直列に接続される。図示の例では、接続部５１１～５１４は、この順で直列となっており、位置Ｌ２１を開始位置とした場合に、Ｘ方向及びＹ方向に傾斜する方向において蛇行する（往復する）ように延びる。第１接続線５１は、接続部５１１を一端側として電源に接続され、接続部５１４を他端側とするとともに後述する接続部５２３を跨ぐ渡り部５１５を介して電源に接続される。 The first connecting wire 51 is composed of one continuous connecting wire (metal thin film), the connecting portions 511 to 514 are connected in series, and all the light emitting elements 3 in the annular light emitting portion 9 and the inner light emitting portion 8 are connected in series. Connected to. In the illustrated example, the connecting portions 511 to 514 are in series in this order, and extend so as to meander (reciprocate) in the directions inclined in the X direction and the Y direction when the position L21 is set as the start position. .. The first connection line 51 is connected to the power supply with the connection portion 511 as one end side, the connection portion 514 as the other end side, and is connected to the power supply via a crossover portion 515 straddling the connection portion 523 described later.
　発光素子４同士を接続する第２接続線５２は、主としてＸ方向及びＹ方向に傾斜する方向に並んだ発光素子４同士を接続する接続部５２１～５２３を有する。具体的には、接続部５２１は、位置Ｌ４２の発光素子４と、素子列Ｌ３のＹ方向他方側端部の発光素子４と、中間部ＰＭ２３の発光素子４と、素子列Ｌ２のＸ方向一方側端部の発光素子４と、位置Ｌ１１の発光素子４と、を接続する。接続部５２２は、素子列Ｌ４と素子列Ｌ２とに共有された発光素子４と、素子列Ｌ３と素子列Ｌ１とに共有された発光素子４と、を接続する。接続部５２３は、位置Ｌ２２の発光素子４と、素子列Ｌ１のＸ方向他方側端部の発光素子４と、中間部ＰＭ１４の発光素子４と、素子列Ｌ４のＹ方向一方側端部の発光素子４と、位置Ｌ３１の発光素子４と、を接続する。 The second connecting line 52 that connects the light emitting elements 4 to each other has connecting portions 521 to 523 that connect the light emitting elements 4 that are arranged mainly in the directions inclined in the X direction and the Y direction. Specifically, the connection portion 521 includes a light emitting element 4 at position L42, a light emitting element 4 at the other end of the element row L3 in the Y direction, a light emitting element 4 of the intermediate portion PM23, and one of the element rows L2 in the X direction. The light emitting element 4 at the side end and the light emitting element 4 at the position L11 are connected. The connection unit 522 connects the light emitting element 4 shared by the element row L4 and the element row L2 and the light emitting element 4 shared by the element row L3 and the element row L1. The connection portion 523 emits light from the light emitting element 4 at the position L22, the light emitting element 4 at the other end in the X direction of the element row L1, the light emitting element 4 from the intermediate PM14, and the light emitting element 4 at the one end in the Y direction of the element row L4. The element 4 and the light emitting element 4 at the position L31 are connected.
　接続部５２１と接続部５２２とは、接続部５１２を跨ぐ渡り部５２４によって接続され、接続部５２２と接続部５２３とは、接続部５１３を跨ぐ渡り部５２５によって接続される。第２接続線５２において、接続部５２１～５２３が直列に接続されることにより、環状発光部９及び内側発光部８における全ての発光素子４が直列に接続される。図示の例では、接続部５２１～５２３は、この順で接続され、位置Ｌ１１を開始位置とした場合に、Ｘ方向及びＹ方向に傾斜する方向において蛇行する（往復する）ように延びる。第２接続線５２は、接続部５２１を一端側とするとともに接続部５１２を跨ぐ渡り部５２６を介して電源に接続され、接続部５２３を他端側として電源に接続される。 The connection portion 521 and the connection portion 522 are connected by a crossover portion 524 that straddles the connection portion 512, and the connection portion 522 and the connection portion 523 are connected by a crossover portion 525 that straddles the connection portion 513. By connecting the connecting portions 521 to 523 in series on the second connecting line 52, all the light emitting elements 4 in the annular light emitting unit 9 and the inner light emitting unit 8 are connected in series. In the illustrated example, the connecting portions 521 to 523 are connected in this order, and when the position L11 is set as the starting position, the connecting portions 521 to 523 extend so as to meander (reciprocate) in the directions inclined in the X direction and the Y direction. The second connection line 52 is connected to the power supply with the connection portion 521 on one end side and the crossover portion 526 straddling the connection portion 512, and is connected to the power supply with the connection portion 523 on the other end side.
　発光装置１は、２色の発光素子３、４の発光強度が色毎に制御され、発光色が可変となっている（調色制御される）ことから、発光素子３のみを発光させたり、発光素子４のみを発光させたりするように使用される場合がある。このとき、環状発光部９において２色の発光素子３、４が交互に並んでいることから、発光素子３、４のうち一方のみを発光させた場合であっても、照射光の形状を丸形に保ちやすくなっている。 In the light emitting device 1, the light emitting intensity of the two color light emitting elements 3 and 4 is controlled for each color, and the light emitting color is variable (color matching is controlled). It may be used to make only the light emitting element 4 emit light. At this time, since the two-color light emitting elements 3 and 4 are alternately arranged in the annular light emitting unit 9, the shape of the irradiation light is rounded even when only one of the light emitting elements 3 and 4 is made to emit light. It is easy to keep in shape.
　ここで、中間部ＰＭ２３、ＰＭ４２、ＰＭ１４、ＰＭ３１に代えて隣接部ＰＮ２３、ＰＮ４２、ＰＮ１４、ＰＮ３１に発光素子３、４を配置した構成を比較例とし、第１実施形態と比較例とを比較する。この比較例では、隣接部ＰＮ２３、ＰＮ４２、ＰＮ１４、ＰＮ３１には、素子列Ｌ１～Ｌ４のうち最も近くに位置する発光素子３、４とは異なる色の発光素子３、４が配置される（即ち、隣接部ＰＮ３１、４２には発光素子４が配置され、隣接部ＰＮ２３、ＰＮ１４には発光素子３が配置される）ものとする。即ち、比較例では、発光素子３、４のうち一方のみに着目すると、Ｘ方向及びＹ方向の両方に傾斜した方向の四辺を有する長方形状の配置となっており、発光素子３、４のうち一方のみを発光させた場合、照射光の形状が角形になりやすい。 Here, a configuration in which light emitting elements 3 and 4 are arranged in adjacent portions PN23, PN42, PN14, and PN31 instead of the intermediate portions PM23, PM42, PM14, and PM31 is used as a comparative example, and the first embodiment and the comparative example are compared. .. In this comparative example, light emitting elements 3 and 4 having a color different from that of the light emitting elements 3 and 4 located closest to the element trains L1 to L4 are arranged in the adjacent portions PN23, PN42, PN14, and PN31 (that is,). , The light emitting element 4 is arranged in the adjacent portions PN31 and 42, and the light emitting element 3 is arranged in the adjacent portions PN23 and PN14). That is, in the comparative example, when focusing on only one of the light emitting elements 3 and 4, it has a rectangular arrangement having four sides in the directions inclined in both the X direction and the Y direction, and the light emitting elements 3 and 4 have a rectangular arrangement. When only one of them is made to emit light, the shape of the irradiation light tends to be rectangular.
　本実施形態によれば、２色の発光素子３、４が円Ｃ０の円周に沿って交互に並んだ環状発光部９が形成されていることで、発光素子３、４のうち一方のみを発光させた場合であっても、照射光の形状を丸形に保ちやすい。さらに、環状発光部９において発光色の色ムラを抑制することができる。 According to the present embodiment, since the annular light emitting portion 9 in which the two color light emitting elements 3 and 4 are alternately arranged along the circumference of the circle C0 is formed, only one of the light emitting elements 3 and 4 is formed. Even when the light is emitted, it is easy to keep the shape of the irradiation light in a round shape. Further, the annular light emitting unit 9 can suppress color unevenness of the emitted color.
　また、第１列部６及び第２列部７の素子列Ｌ１～Ｌ４のそれぞれにおいて、２色の発光素子３、４が交互に並んでいることで、環状発光部９の内側において発光色の色ムラを抑制することができる。 Further, in each of the element rows L1 to L4 of the first row portion 6 and the second row portion 7, the two color light emitting elements 3 and 4 are alternately arranged, so that the light emitting color is emitted inside the annular light emitting portion 9. Color unevenness can be suppressed.
　また、接続部５１１～５１４、５２１～５２３が、第１列部６及び第２列部７のうちＸ方向及びＹ方向の両方に対して傾斜した方向に並ぶ発光素子３、４同士を接続することで、配線が冗長となることを抑制し、省スペースで発光素子３、４同士を接続することができる。 Further, the connecting portions 511 to 514 and 521 to 523 connect the light emitting elements 3 and 4 which are arranged in the directions inclined with respect to both the X direction and the Y direction among the first row portion 6 and the second row portion 7. As a result, it is possible to prevent the wiring from becoming redundant and to connect the light emitting elements 3 and 4 to each other in a space-saving manner.
［第２実施形態］
　図３に、第２実施形態の発光装置の発光装置本体１０Ｂを示す。発光装置本体１０Ｂでは、第１実施形態に対し、環状発光部９Ｂにおける発光素子３、４の配置が異なっている。環状発光部９Ｂでは、２色の発光素子３、４が円Ｃ０の円周に沿って交互に並ぶとともに、隣り合う２つの発光素子３、４同士の間隔が一定となっている。 [Second Embodiment]
FIG. 3 shows the light emitting device main body 10B of the light emitting device of the second embodiment. In the light emitting device main body 10B, the arrangement of the light emitting elements 3 and 4 in the annular light emitting unit 9B is different from that of the first embodiment. In the annular light emitting unit 9B, the two color light emitting elements 3 and 4 are alternately arranged along the circumference of the circle C0, and the distance between the two adjacent light emitting elements 3 and 4 is constant.
　第１実施形態では、素子列Ｌ１～Ｌ４をそれぞれ延長した位置Ｌ１１、Ｌ１２、Ｌ２１、Ｌ２２、Ｌ３１、Ｌ３２、Ｌ４１、Ｌ４２に発光素子３、４が設けられているのに対し、第２実施形態では、位置Ｌ１１、Ｌ１２、Ｌ２１、Ｌ２２、Ｌ３１、Ｌ３２、Ｌ４１、Ｌ４２よりも中間部ＰＭ２３、ＰＭ４２、ＰＭ１４、ＰＭ３１に近い位置に発光素子３、４が設けられている。 In the first embodiment, the light emitting elements 3 and 4 are provided at the positions L11, L12, L21, L22, L31, L32, L41, and L42 extending the element trains L1 to L4, respectively, whereas in the second embodiment, the light emitting elements 3 and 4 are provided. The light emitting elements 3 and 4 are provided at positions closer to the intermediate portions PM23, PM42, PM14, and PM31 than the positions L11, L12, L21, L22, L31, L32, L41, and L42.
　環状発光部９Ｂを形成する発光素子３、４は、全て、円Ｃ０の中心から径方向に延びる線分に対して直交する一対の辺を有する。この一対の辺のうち、外側に位置する辺が、円Ｃ０の円周に沿うように延びる。 The light emitting elements 3 and 4 forming the annular light emitting portion 9B all have a pair of sides orthogonal to a line segment extending in the radial direction from the center of the circle C0. Of the pair of sides, the side located on the outside extends along the circumference of the circle C0.
　発光素子３、４を接続する電気接続部５は、発光素子３同士を接続する第３接続線５３と、発光素子４同士を接続する第４接続線５４と、を有する。第３接続線５３は、接続部５３１～５３３を有する。接続部５３１は、位置Ｌ４１近傍の発光素子３と、素子列Ｌ３のＹ方向一方側端部の発光素子３と、中間部ＰＭ３１の発光素子３と、素子列Ｌ１のＸ方向一方側端部の発光素子３と、位置Ｌ２１近傍の発光素子３と、を接続する。接続部５３２は、位置Ｌ１２近傍の発光素子３と、素子列Ｌ１と素子列Ｌ４とに共有された発光素子３と、素子列Ｌ２と素子列Ｌ３とに共有された発光素子３と、位置Ｌ３２近傍の発光素子３と、を接続する。接続部５３３は、中間部ＰＭ４２の発光素子３と、素子列Ｌ２のＸ方向他方側端部の発光素子３と、素子列Ｌ４のＹ方向他方側端部の発光素子３と、を接続する。 The electrical connection unit 5 that connects the light emitting elements 3 and 4 has a third connection line 53 that connects the light emitting elements 3 to each other and a fourth connection line 54 that connects the light emitting elements 4 to each other. The third connection line 53 has connection portions 531 to 533. The connection portion 531 includes a light emitting element 3 near the position L41, a light emitting element 3 at the Y-direction one-sided end of the element train L3, a light-emitting element 3 at the intermediate PM31, and an X-direction one-sided end of the element train L1. The light emitting element 3 and the light emitting element 3 near the position L21 are connected. The connection portion 532 includes a light emitting element 3 near the position L12, a light emitting element 3 shared by the element row L1 and the element row L4, a light emitting element 3 shared by the element row L2 and the element row L3, and a position L32. A light emitting element 3 in the vicinity is connected. The connecting portion 533 connects the light emitting element 3 of the intermediate portion PM42, the light emitting element 3 at the other end of the element row L2 in the X direction, and the light emitting element 3 at the other end of the element row L4 in the Y direction.
　第３接続線５３は、連続した１本の接続線（金属薄膜）によって構成され、接続部５３１～５３３が直列に接続され、環状発光部９Ｂ及び内側発光部８における全ての発光素子３が直列に接続される。図示の例では、接続部５３１～５３３は、この順で直列となっており、Ｘ方向及びＹ方向に傾斜する方向において蛇行する（往復する）ように延びる。第３接続線５３は、接続部５３１を一端側として電源に接続され、接続部５３３を他端側として電源に接続される。 The third connecting line 53 is composed of one continuous connecting line (metal thin film), the connecting portions 531 to 533 are connected in series, and all the light emitting elements 3 in the annular light emitting unit 9B and the inner light emitting unit 8 are connected in series. Connected to. In the illustrated example, the connecting portions 531 to 533 are in series in this order, and extend so as to meander (reciprocate) in the directions inclined in the X direction and the Y direction. The third connection line 53 is connected to the power supply with the connection portion 531 as one end side and is connected to the power supply with the connection portion 533 as the other end side.
　第４接続線５４は、接続部５４１～５４３を有する。接続部５４１は、位置Ｌ３１近傍の発光素子４と、位置Ｌ１１近傍の発光素子４と、を接続する。接続部５４２は、中間部ＰＭ１４の発光素子４と、素子列Ｌ４のＹ方向一方側端部の発光素子４と、素子列Ｌ１と素子列Ｌ３とに共有される発光素子４と、素子列Ｌ２のＸ方向一方側端部の発光素子４と、中間部ＰＭ２３の発光素子４と、を接続する。接続部５４３は、位置Ｌ２２近傍の発光素子４と、素子列Ｌ１のＸ方向他方側端部の発光素子４と、素子列Ｌ２と素子列Ｌ４とに共有される発光素子４と、素子列Ｌ３のＹ方向他方側端部の発光素子４と、位置Ｌ４２近傍の発光素子４と、を接続する。 The fourth connection line 54 has connection portions 541 to 543. The connecting portion 541 connects the light emitting element 4 near the position L31 and the light emitting element 4 near the position L11. The connection portion 542 includes a light emitting element 4 of the intermediate portion PM14, a light emitting element 4 at one end of the element row L4 in the Y direction, a light emitting element 4 shared by the element row L1 and the element row L3, and an element row L2. The light emitting element 4 at one end on one side in the X direction and the light emitting element 4 at the intermediate portion PM23 are connected. The connection portion 543 includes a light emitting element 4 near the position L22, a light emitting element 4 at the other end of the element row L1 in the X direction, a light emitting element 4 shared by the element row L2 and the element row L4, and an element row L3. The light emitting element 4 at the other end in the Y direction and the light emitting element 4 near the position L42 are connected.
　接続部５４２と接続部５４３とは、接続部５３２を跨ぐ渡り部５４４によって接続される。第４接続線５４において、接続部５４１～５４３が直列に接続されることにより、環状発光部９Ｂ及び内側発光部８における全ての発光素子４が直列に接続される。図示の例では、接続部５４１～５４３は、この順で接続され、Ｘ方向及びＹ方向に傾斜する方向において蛇行する（往復する）ように延びる。第４接続線５４は、接続部５４１を一端側として電源に接続され、接続部５４３を他端側として電源に接続される。 The connecting portion 542 and the connecting portion 543 are connected by a crossover portion 544 that straddles the connecting portion 532. By connecting the connecting portions 541 to 543 in series on the fourth connecting line 54, all the light emitting elements 4 in the annular light emitting unit 9B and the inner light emitting unit 8 are connected in series. In the illustrated example, the connecting portions 541 to 543 are connected in this order and extend so as to meander (reciprocate) in the directions inclined in the X direction and the Y direction. The fourth connection line 54 is connected to the power supply with the connection portion 541 as one end side and is connected to the power supply with the connection portion 543 as the other end side.
　本実施形態によれば、第１実施形態と同様に、２色の発光素子３、４が円Ｃ０の円周に沿って交互に並んだ環状発光部９Ｂが形成されていることで、照射光の形状を丸形に保ちやすい。 According to the present embodiment, as in the first embodiment, the annular light emitting portion 9B in which the two color light emitting elements 3 and 4 are alternately arranged along the circumference of the circle C0 is formed, so that the irradiation light is emitted. It is easy to keep the shape of.
　また、環状発光部９Ｂにおいて発光素子３、４が等間隔で並んでいることで、照射光の形状を丸形に保ちやすい。さらに、環状発光部９Ｂにおいて発光色の色ムラを抑制することができる。 Further, since the light emitting elements 3 and 4 are arranged at equal intervals in the annular light emitting unit 9B, it is easy to keep the shape of the irradiation light in a round shape. Further, it is possible to suppress color unevenness of the emitted color in the annular light emitting unit 9B.
　また、環状発光部９Ｂを形成する発光素子３、４が、円Ｃ０の中心から径方向に延びる線分に対して直交するとともに円Ｃ０の円周に沿った辺を有することで、環状発光部９Ｂの外周縁を円Ｃ０の円周に沿った形状としやすく、照射光の形状を丸形に保ちやすい。 Further, the light emitting elements 3 and 4 forming the annular light emitting portion 9B are orthogonal to the line segment extending in the radial direction from the center of the circle C0 and have a side along the circumference of the circle C0. It is easy to make the outer peripheral edge of 9B a shape along the circumference of the circle C0, and it is easy to keep the shape of the irradiation light in a round shape.
　以上、本発明の発光装置１について、好ましい実施形態を挙げて説明したが、本発明の発光装置は前記実施形態の構成に限定されるものではない。例えば、前記第２実施形態では、環状発光部９Ｂを形成する発光素子３、４が、円Ｃ０の中心から径方向に延びる線分に対して直交する辺を有するものとしたが、図４に示す変形例１のように、全ての発光素子３、４の辺がＸ方向又はＹ方向に沿うように延びる構成としてもよい。変形例１は、前記第１実施形態に対し、中間部ＰＭ２３、ＰＭ４２、ＰＭ１４、ＰＭ３１に設けられた発光素子３、４の向きのみが異なっている。 Although the light emitting device 1 of the present invention has been described above with reference to preferred embodiments, the light emitting device of the present invention is not limited to the configuration of the above embodiment. For example, in the second embodiment, the light emitting elements 3 and 4 forming the annular light emitting portion 9B have sides orthogonal to a line segment extending in the radial direction from the center of the circle C0. As in the modified example 1 shown, the sides of all the light emitting elements 3 and 4 may extend along the X direction or the Y direction. In the first modification, only the orientations of the light emitting elements 3 and 4 provided in the intermediate portions PM23, PM42, PM14, and PM31 are different from those of the first embodiment.
　また、前記実施形態では、中間部ＰＭ２３、ＰＭ４２、ＰＭ１４、ＰＭ３１に発光素子３、４が１つずつ設けられるものとしたが、各々の中間部に２つ以上の発光素子を設けてもよい。図５に示す変形例２では、中間部ＰＭ３１、ＰＭ４２のそれぞれに２つの発光素子３、４が設けられており、中間部ＰＭ２３、ＰＭ１４のそれぞれに１つの発光素子３、４が設けられている。また、位置Ｌ１１、Ｌ２１に対してＹ方向他方側にずれた位置のそれぞれに発光素子３、４が設けられており、位置Ｌ３２、Ｌ４２に対してＸ方向一方側にずれた位置のそれぞれに発光素子３、４が設けられており、位置Ｌ１２、Ｌ２２に対してＹ方向一方側にずれた位置のそれぞれに発光素子３、４が設けられており、位置Ｌ３１、Ｌ４１に対してＸ方向他方側にずれた位置のそれぞれに発光素子３、４が設けられている。 Further, in the above-described embodiment, one light emitting element 3 or 4 is provided in each of the intermediate portions PM23, PM42, PM14, and PM31, but two or more light emitting elements may be provided in each intermediate portion. In the modified example 2 shown in FIG. 5, two light emitting elements 3 and 4 are provided in each of the intermediate portions PM31 and PM42, and one light emitting element 3 and 4 are provided in each of the intermediate portions PM23 and PM14. .. Further, light emitting elements 3 and 4 are provided at positions shifted to the other side in the Y direction with respect to the positions L11 and L21, and light is emitted at positions shifted to one side in the X direction with respect to the positions L32 and L42. Elements 3 and 4 are provided, and light emitting elements 3 and 4 are provided at positions shifted to one side in the Y direction with respect to positions L12 and L22, respectively, and light emitting elements 3 and 4 are provided on the other side in the X direction with respect to positions L31 and L41. Light emitting elements 3 and 4 are provided at each of the positions shifted to.
　図６に示す変形例３では、変形例２に対し、中間部ＰＭ２３、ＰＭ４２、ＰＭ１４、ＰＭ３１に設けられた発光素子３、４の辺がＸ方向又はＹ方向に沿うように延びる点で異なっている。 The modified example 3 shown in FIG. 6 differs from the modified example 2 in that the sides of the light emitting elements 3 and 4 provided in the intermediate portions PM23, PM42, PM14, and PM31 extend along the X direction or the Y direction. There is.
　また、前記第１実施形態では、内側発光部８が第１列部６及び第２列部７を有するものとしたが、このような構成に限定されない。図７～１４に示す変形例４～１１では、内側発光部が、２色の発光素子３、４が環状発光部の内側に沿って交互に並んだ内側環状部を有する。 Further, in the first embodiment, the inner light emitting portion 8 has the first row portion 6 and the second row portion 7, but the configuration is not limited to this. In the modified examples 4 to 11 shown in FIGS. 7 to 14, the inner light emitting portion has an inner annular portion in which two color light emitting elements 3 and 4 are alternately arranged along the inside of the annular light emitting portion.
　図７に示す変形例４では、４つの発光素子３、４によって内側環状部８１が形成されている。内側環状部８１の内側に発光素子３が配置され、内側環状部８１とその内側の発光素子３とによって内側発光部８Ｂが形成されている。Ｘ方向に５つの発光素子３、４が並んでおり、中央に発光素子３が配置され、その他は全て発光素子４となっている。Ｙ方向に５つの発光素子３、４が配置され、両端に発光素子４が配置され、その他は全て発光素子３となっている。Ｘ方向に並んだ発光素子３、４の列の端部と、Ｙ方向に並んだ発光素子３、４の列の端部と、の間には、それぞれ１つの発光素子３が配置され、これらの発光素子３の位置及び向きは、第１実施形態において中間部ＰＭ２３、ＰＭ４２、ＰＭ１４、ＰＭ３１に設けられた発光素子３、４と同様である。変形例４においても、円Ｃ０の円周に沿った環状発光部９Ｃが形成されている。図８に示す変形例５では、中間部ＰＭ２３、ＰＭ４２、ＰＭ１４、ＰＭ３１の発光素子３の辺がＸ方向又はＹ方向に沿っている点で変形例４と異なる。変形例５においても、円Ｃ０の円周に沿った環状発光部９Ｄが形成されている。 In the modified example 4 shown in FIG. 7, the inner annular portion 81 is formed by the four light emitting elements 3 and 4. The light emitting element 3 is arranged inside the inner annular portion 81, and the inner light emitting portion 8B is formed by the inner annular portion 81 and the inner light emitting element 3. Five light emitting elements 3 and 4 are arranged in the X direction, the light emitting element 3 is arranged in the center, and all the others are light emitting elements 4. Five light emitting elements 3 and 4 are arranged in the Y direction, light emitting elements 4 are arranged at both ends, and all others are light emitting elements 3. One light emitting element 3 is arranged between the end of the row of the light emitting elements 3 and 4 arranged in the X direction and the end of the row of the light emitting elements 3 and 4 arranged in the Y direction. The position and orientation of the light emitting element 3 of the above are the same as those of the light emitting elements 3 and 4 provided in the intermediate portions PM23, PM42, PM14, and PM31 in the first embodiment. Also in the modified example 4, the annular light emitting portion 9C is formed along the circumference of the circle C0. The modified example 5 shown in FIG. 8 is different from the modified example 4 in that the sides of the light emitting elements 3 of the intermediate portions PM23, PM42, PM14, and PM31 are along the X direction or the Y direction. Also in the modified example 5, the annular light emitting portion 9D is formed along the circumference of the circle C0.
　図９に示す変形例６では、内側環状部８１の内側に発光素子３が設けられていない点で変形例４と異なる。図１０に示す変形例７では、内側環状部８１の内側に発光素子４が設けられていない点で変形例５と異なる。 The modified example 6 shown in FIG. 9 is different from the modified example 4 in that the light emitting element 3 is not provided inside the inner annular portion 81. The modified example 7 shown in FIG. 10 is different from the modified example 5 in that the light emitting element 4 is not provided inside the inner annular portion 81.
　図１１に示す変形例８では、Ｘ方向に並んだ発光素子３、４の列の両端部に発光素子３が配置されている点、及び、Ｘ方向に並んだ発光素子３、４の列の端部と、Ｙ方向に並んだ発光素子３、４の列の端部と、の間に、それぞれ２つの発光素子３、４が配置されている点で変形例４と異なる。図１２に示す変形例９では、中間部ＰＭ２３、ＰＭ４２、ＰＭ１４、ＰＭ３１の発光素子３、４の辺がＸ方向又はＹ方向に沿っている点で変形例８と異なる。 In the modified example 8 shown in FIG. 11, the points where the light emitting elements 3 are arranged at both ends of the rows of the light emitting elements 3 and 4 arranged in the X direction, and the rows of the light emitting elements 3 and 4 arranged in the X direction. It differs from the modified example 4 in that two light emitting elements 3 and 4 are arranged between the end portion and the end portion of the row of the light emitting elements 3 and 4 arranged in the Y direction, respectively. The modified example 9 shown in FIG. 12 is different from the modified example 8 in that the sides of the light emitting elements 3 and 4 of the intermediate portions PM23, PM42, PM14, and PM31 are along the X direction or the Y direction.
　図１３に示す変形例１０では、内側環状部８１の内側に発光素子３が設けられていない点で変形例８と異なる。図１４に示す変形例１１では、内側環状部８１の内側に発光素子３が設けられていない点で変形例９と異なる。 The modified example 10 shown in FIG. 13 is different from the modified example 8 in that the light emitting element 3 is not provided inside the inner annular portion 81. The modified example 11 shown in FIG. 14 is different from the modified example 9 in that the light emitting element 3 is not provided inside the inner annular portion 81.
　また、前記第１実施形態では、発光素子３、４が正方形状であるものとしたが、発光素子の形状は正方形状に限定されず、他の多角形状であってもよいし、円状であってもよく、適宜に設定されればよい。 Further, in the first embodiment, the light emitting elements 3 and 4 are assumed to be square, but the shape of the light emitting element is not limited to a square shape, and may be another polygonal shape or a circular shape. It may be present, and it may be set appropriately.
　また、前記第１実施形態では、環状発光部９の発光素子３、４が円Ｃ０の円周に沿って並ぶものとしたが、環状発光部において発光素子が楕円に沿って並んでいてもよい。即ち、発光装置によって所望の照射光形状が得られるように、環状発光部において発光素子が円状又は楕円状に並んでいればよい。 Further, in the first embodiment, the light emitting elements 3 and 4 of the annular light emitting unit 9 are arranged along the circumference of the circle C0, but the light emitting elements may be arranged along the ellipse in the annular light emitting unit. .. That is, the light emitting elements may be arranged in a circular or elliptical shape in the annular light emitting portion so that the desired irradiation light shape can be obtained by the light emitting device.
　また、前記第１実施形態では、発光装置１において２色の発光素子３、４が用いられるものとしたが、発光装置において３色以上の発光素子が用いられてもよい。この場合、環状発光部において、３色以上の発光素子が所定の順序を繰り返す（例えば、時計回り方向に沿って、赤、青、緑を繰り返す）ように並んでいればよい。 Further, in the first embodiment, the light emitting device 1 uses two color light emitting elements 3 and 4, but the light emitting device may use three or more color light emitting elements. In this case, in the annular light emitting unit, the light emitting elements of three or more colors may be arranged so as to repeat a predetermined order (for example, red, blue, and green are repeated along the clockwise direction).
　その他、当業者は、従来公知の知見に従い、本発明の発光装置を適宜改変することができる。かかる改変によってもなお本発明の構成を具備する限り、勿論、本発明の範疇に含まれるものである。 In addition, those skilled in the art can appropriately modify the light emitting device of the present invention according to conventionally known knowledge. As long as the modification still has the constitution of the present invention, it is, of course, included in the category of the present invention.
１…発光装置、２…基板、３…発光素子、４…発光素子、５…電気接続部、５１…第１接続線、５２…第２接続線、６…第１列部、７…第２列部、８…内側発光部、８１…内側環状部、９…環状発光部、Ｌ１～Ｌ４…素子列、ＰＭ２３，ＰＭ４２，ＰＭ１４，ＰＭ３１…中間部、Ｌ１１，Ｌ１２，Ｌ２１，Ｌ２２，Ｌ３１，Ｌ３２，Ｌ４１，Ｌ４２…素子列を延長した位置、Ｃ０…円 1 ... light emitting device, 2 ... substrate, 3 ... light emitting element, 4 ... light emitting element, 5 ... electrical connection part, 51 ... first connection line, 52 ... second connection line, 6 ... first row part, 7 ... second Row part, 8 ... Inner light emitting part, 81 ... Inner annular part, 9 ... Circular light emitting part, L1 to L4 ... Element row, PM23, PM42, PM14, PM31 ... Intermediate part, L11, L12, L21, L22, L31, L32 , L41, L42 ... Position where the element train is extended, C0 ... Circle

Claims (7)

  1. 　基板上において複数色の発光素子が円又は楕円に沿って並んだ環状発光部と、
    　前記環状発光部の内側の領域に当該環状発光部と同色の複数の発光素子が配置された内側発光部と、を備え、
    　前記複数色の発光素子の発光強度が色毎に制御され、
    　前記環状発光部において、前記複数色の発光素子が所定の順序を繰り返すように並ぶことを特徴とする発光装置。     An annular light emitting part in which light emitting elements of multiple colors are arranged along a circle or an ellipse on a substrate.
    An inner light emitting portion in which a plurality of light emitting elements having the same color as the annular light emitting portion are arranged is provided in the inner region of the annular light emitting portion.
    The emission intensity of the plurality of color light emitting elements is controlled for each color.
    A light emitting device characterized in that, in the annular light emitting unit, the light emitting elements of a plurality of colors are arranged so as to repeat a predetermined order.
  2. 　前記内側発光部は、複数の前記発光素子が所定方向に並んだ少なくとも１列の素子列によって構成された第１列部と、複数の前記発光素子が前記第１列部と交差するように並んだ少なくとも１列の素子列によって構成された第２列部と、を有することを特徴とする請求項１に記載の発光装置。 The inner light emitting portion is arranged so that a first row portion composed of at least one row of element rows in which a plurality of the light emitting elements are arranged in a predetermined direction and a plurality of the light emitting elements intersect with the first row portion. The light emitting device according to claim 1, further comprising a second row portion composed of at least one row of element rows.
  3. 　前記環状発光部は、前記第１列部の素子列を延長した位置と、前記第２列部の素子列を延長した位置と、の間に位置する中間部に少なくとも１つの前記発光素子を有することを特徴とする請求項２に記載の発光装置。 The annular light emitting unit has at least one light emitting element in an intermediate portion located between a position where the element row of the first row portion is extended and a position where the element row of the second row portion is extended. The light emitting device according to claim 2.
  4. 　前記第１列部及び前記第２列部の素子列のそれぞれにおいて、複数色の発光素子が所定の順序を繰り返すように並んでいることを特徴とする請求項２又は３に記載の発光装置。 The light emitting device according to claim 2 or 3, wherein light emitting elements of a plurality of colors are arranged so as to repeat a predetermined order in each of the element rows of the first row portion and the second row portion.
  5. 　同色の前記発光素子同士を直列に接続する電気接続部を備え、
    　前記第１列部及び前記第２列部は、それぞれ複数列の前記素子列を有し、
    　前記電気接続部は、前記第１列部及び前記第２列部のうち前記素子列の方向に対して傾斜した方向に並ぶ前記発光素子同士を接続する接続線を有することを特徴とする請求項４に記載の発光装置。     It is provided with an electrical connection unit that connects the light emitting elements of the same color in series.
    The first row portion and the second row portion each have a plurality of rows of the element rows.
    The claim is characterized in that the electrical connection portion has a connection line for connecting the light emitting elements arranged in a direction inclined with respect to the direction of the element row among the first row portion and the second row portion. The light emitting device according to 4.
  6. 　前記内側発光部は、複数色の前記発光素子が前記環状発光部の内側に沿って所定の順序を繰り返すように並んだ内側環状部を有することを特徴とする請求項１に記載の発光装置。 The light emitting device according to claim 1, wherein the inner light emitting unit has an inner annular portion in which the light emitting elements of a plurality of colors are arranged along the inside of the annular light emitting unit so as to repeat a predetermined order.
  7. 　前記環状発光部において、四角形状の前記発光素子が円に沿って配置され、当該発光素子が、当該円の中心から径方向に延びる線分に対して直交するとともに当該円に沿った辺を有することを特徴とする請求項１～６のいずれか１項に記載の発光装置。 In the annular light emitting portion, the rectangular light emitting element is arranged along a circle, and the light emitting element has a side orthogonal to a line segment extending in the radial direction from the center of the circle and along the circle. The light emitting device according to any one of claims 1 to 6, characterized in that.
PCT/JP2021/000160 2020-03-19 2021-01-06 Light-emitting device WO2021186851A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012113959A (en) * 2010-11-24 2012-06-14 Panasonic Corp Light-emitting device
JP2013211198A (en) * 2012-03-30 2013-10-10 Mitsubishi Chemicals Corp Luminaire
JP2019016780A (en) * 2017-07-04 2019-01-31 日亜化学工業株式会社 Light-emitting device
JP2019075297A (en) * 2017-10-17 2019-05-16 日亜化学工業株式会社 Light pipe and lighting device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012113959A (en) * 2010-11-24 2012-06-14 Panasonic Corp Light-emitting device
JP2013211198A (en) * 2012-03-30 2013-10-10 Mitsubishi Chemicals Corp Luminaire
JP2019016780A (en) * 2017-07-04 2019-01-31 日亜化学工業株式会社 Light-emitting device
JP2019075297A (en) * 2017-10-17 2019-05-16 日亜化学工業株式会社 Light pipe and lighting device

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