JP2013165215A - Light emitting device and lighting device using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inhibit light radiated from a light emitting part to the exterior from being re-absorbed by an adjacent light emitting part and mold adjacent wavelength conversion members separately from each other.SOLUTION: A light emitting device 1 includes: a mounting substrate 2; and light emitting parts 31 provided on one surface 21 of the mounting substrate 2. Each light emitting part 31 has multiple light emitting elements 4, 4 mounted on the one surface 21 of the mounting substrate 2 and a wavelength conversion member 5 emitting light having a wavelength different from that of incident light. The wavelength conversion member 5 collectively seals the multiple light emitting elements 4, 4.

Description

  The present invention relates to a light-emitting device using a plurality of light-emitting elements and a lighting fixture using the light-emitting device.

  Conventionally, a light-emitting device including a light-emitting element and a wavelength conversion member that seals the light-emitting element is known (see, for example, Patent Document 1). In the conventional light emitting device, each of the plurality of wavelength conversion members seals the corresponding light emitting element. Each wavelength conversion member emits light having a wavelength different from the light emitted from the light emitting element. Thereby, the conventional light-emitting device can obtain white light by wavelength-converting a part of the light emitted from the light-emitting element.

JP 2011-146353 A

  However, in the conventional light emitting device, since a plurality of light emitting elements are individually sealed by the wavelength conversion member one by one, if the light emitting elements, that is, the wavelength conversion members are close to each other, the radiation from a certain wavelength conversion member is emitted. There is a problem that the emitted light is reabsorbed by the wavelength conversion member of the adjacent light emitting section. For this reason, in the conventional light emitting device, the light color is not uniform, and color unevenness may occur.

  Further, in the conventional light emitting device, when the light emitting elements are close to each other, when the wavelength conversion member is formed, the liquid translucent resin penetrates and the adjacent wavelength conversion members are connected and formed. There was also a problem.

  The present invention has been made in view of the above points, and an object of the present invention is to reduce the light radiated to the outside from the light emitting part from being reabsorbed by the adjacent light emitting part, and An object of the present invention is to provide a light emitting device capable of separating and forming wavelength converting members to be molded and a lighting fixture using the light emitting device.

  The light emitting device of the present invention includes a mounting substrate and a light emitting unit provided on one surface of the mounting substrate, and the light emitting unit includes a plurality of light emitting elements mounted on the one surface of the mounting substrate, and an incident light. A wavelength conversion member that emits light having a wavelength different from that of the light, and the wavelength conversion member collectively seals the plurality of light emitting elements.

  In the light emitting device, the light emitting unit corresponds to the plurality of light emitting elements on a one-to-one basis, and each pair is provided along a first direction of the corresponding light emitting element, and the light emitting element, the mounting substrate, It is preferable to include a plurality of pairs of bonding wires that electrically connect the two.

  In the light emitting device, it is preferable that the plurality of light emitting elements are mounted on the one surface of the mounting substrate side by side in a second direction intersecting with the first direction.

  In this light-emitting device, it is preferable that the plurality of light-emitting elements are mounted on the one surface of the mounting substrate side by side in the first direction.

  In this light emitting device, it is preferable that a plurality of the light emitting units are provided in a lattice shape on the one surface of the mounting substrate.

  In this light emitting device, it is preferable that a plurality of the light emitting portions are provided in a staggered pattern on the one surface of the mounting substrate.

  In the light emitting device, a second light emitting unit including a single light emitting element mounted on the one surface of the mounting substrate and the wavelength conversion member for sealing the single light emitting element, the light emitting unit It is preferable to provide on the one surface of the mounting board separately from the mounting board.

  In the light emitting device, it is preferable that a plurality of the light emitting units are provided around the second light emitting unit around the second light emitting unit on the one surface of the mounting substrate.

  In this light emitting device, the light emitting unit is provided in a plurality on the one surface of the mounting substrate, and the plurality of light emitting units include a light emitting unit in which the plurality of light emitting elements are arranged in the first direction, and the plurality of light emitting units. It is preferable that the light emitting element includes a light emitting unit arranged in a second direction intersecting with the first direction.

  The lighting fixture of this invention is equipped with the said light-emitting device and the fixture main body to which the said light-emitting device was attached.

  In the present invention, the light emitted to the outside from the light emitting part is reduced from being reabsorbed by the adjacent light emitting part, and the adjacent wavelength conversion members can be separated and molded.

The light-emitting device which concerns on Embodiment 1 is shown, (a) is a front view, (b) is an enlarged view of a light emission part. 1 is a side view of a light emitting device according to Embodiment 1. FIG. The light-emitting device which concerns on Embodiment 2 is shown, (a) is a front view, (b) is an enlarged view of a light emission part. 6 is a side view of a light emitting device according to Embodiment 2. FIG. 6 is a side view of a light emitting device according to Embodiment 3. FIG. 6 is a front view of a light emitting device according to Embodiment 4. FIG. 6 is a front view of a light emitting device according to Embodiment 5. FIG. 10 is a front view of a light emitting device according to Embodiment 6. FIG. FIG. 10 is a front view of a light emitting device according to Embodiment 7.

(Embodiment 1)
As shown in FIG. 1, the light-emitting device 1 according to Embodiment 1 includes a mounting substrate 2 and a plurality (48 in the illustrated example) of light-emitting units 31, 31,. … And.

  In the light emitting device 1 of the present embodiment, a plurality of (two in the illustrated example) light emitting elements 4 and 4 are collectively sealed in each of the plurality of light emitting portions 31, 31,. The configuration is adopted. Hereinafter, each component of the light emitting device 1 will be described in detail.

  The mounting substrate 2 is provided with a plurality of light emitting portions 31, 31,. On one surface 21 of the mounting substrate 2, a plurality of light emitting portions 31, 31,... Are arranged in a grid pattern in the x direction (first direction) and the y direction (second direction). The mounting substrate 2 is preferably a metal substrate using a metal as a base material in order to efficiently dissipate heat from the light emitting element 4 of the light emitting unit 3. The material of the metal substrate may be a metal material having a relatively high thermal conductivity such as copper (Cu) or aluminum. When the light output of the light emitting element 4 is small and heat generation is small, the mounting substrate 2 may be a glass epoxy substrate or a paper phenol substrate.

  In addition, the mounting substrate 2 is provided with wiring patterns 22, 22,... For securing power supply to the light emitting element 4 of the light emitting unit 31 through bonding wires 6 described later. Further, the mounting substrate 2 is formed with a pair of electrodes 23, 23 that are electrically connected to the wiring patterns 22, 22,. When the mounting substrate 2 is a metal substrate, the insulation between the base of the mounting substrate 2 and the wiring pattern 22 is ensured between the base (metal) of the mounting substrate 2 and the wiring pattern 22. An insulating layer (not shown) is provided.

  A plurality of light emitting portions 31, 31,... Of the present embodiment are mounted on the one surface 21 of the mounting substrate 2 in an array of 8 (x direction) × 6 (y direction) grids. Each light emitting unit 31 includes a plurality of (two in the illustrated example) light emitting elements 4 and 4 each composed of, for example, an LED chip, a wavelength conversion member 5 that seals the plurality of light emitting elements 4 and 4, and a plurality of pairs. (2 pairs in the illustrated example) are provided with bonding wires 6, 6,.

  The plurality of light emitting elements 4 and 4 of the present embodiment are mounted on the one surface 21 of the mounting substrate 2 side by side in the y direction (second direction). The light emitting unit 31 in which the plurality of light emitting elements 4 and 4 are arranged in the y direction in this way is referred to as a light emitting unit 311. For example, a blue LED chip that emits blue light is used as the light emitting element 4. The blue LED chip has a structure in which a gallium nitride semiconductor layer is formed on a sapphire substrate, for example. The light emitting element 4 is mounted on one surface 21 of the mounting substrate 2 via a submount 7 (see FIG. 2) described later, and a power feeding path is secured by a pair of bonding wires 6 and 6.

  The bonding wire 6 is made of a thin metal wire (for example, a gold wire or an aluminum wire), one end is electrically connected to the light emitting element 4, and the other end is electrically connected to the mounting substrate 2. It is used as a power feeding path to the light emitting element 4. In order to prevent the liquid translucent resin from running along the bonding wire 6 when the wavelength conversion member 5 is molded, wire bonding is performed by launching so that only one end of the bonding wire 6 is in contact with the light emitting element 4. .

  The submount 7 shown in FIG. 2 relieves stress acting on the light emitting element 4 due to the difference in linear expansion coefficient between the mounting substrate 2 and the light emitting element 4. Further, the submount 7 has a heat conduction function for transferring heat generated in the light emitting element 4 to the mounting substrate 2. Examples of the material of the submount 7 include aluminum nitride (AlN) having a relatively high thermal conductivity and an insulating property. The light emitting element 4 and the submount 7 are joined using lead-free solder such as AuSn or SnAgCu.

  The wavelength conversion member 5 is configured by a molded product of a mixture in which a transparent resin and a phosphor are mixed. The shape of the wavelength conversion member 5 of this embodiment is a substantially hemisphere (including a hemisphere). The wavelength conversion member 5 is formed by dropping a liquid translucent resin in which a transparent resin and a phosphor are mixed into a region where a plurality of corresponding light emitting elements 4 and 4 are mounted, and dropping the translucent resin. Is cured so as to seal the corresponding plurality of light emitting elements 4, 4 and a plurality of pairs of bonding wires 6, 6. Here, as shown in FIG. 1B, the dropping position 51 of the translucent resin is the midpoint of the distance L1 between the end faces in the short direction (y direction) of the two light emitting elements 4 and 4 and emits light. The center of the element 4 is the length L2 in the longitudinal direction (x direction).

  The transparent resin used for the wavelength conversion member 5 is a high-viscosity silicone resin or the like, and is used for dispersing the phosphor. The transparent resin is not limited to a silicone resin, and may be an acrylic resin or an epoxy resin, for example.

  The phosphor used for the wavelength conversion member 5 is excited by light emitted from the corresponding light emitting elements 4, 4 and has a wavelength different from that of the light emitted from the corresponding light emitting elements 4, 4. The excitation light is emitted. As such a phosphor, a particulate yellow phosphor that emits broad yellow light that is excited by the blue light emitted from the light emitting element 4 is used. Examples of the yellow phosphor include a YAG (yttrium aluminum garnet) yellow light emitting phosphor.

  The concentration of the phosphor of the wavelength conversion member 5 is set so that the chromaticity of the light emitted from the light emitting device 1 to the outside becomes a target value. The chromaticity is measured in a state in which blue light is emitted from each light emitting element 4 of the plurality of light emitting portions 31, 31,... When the plurality of wavelength conversion members 5, 5,. Measured by. For example, when white light is emitted from the light emitting device 1 to the outside, the chromaticity (x, y) = (0.33, 0.33) and the chromaticity differences Δx and Δy are both 0.015 or less. As described above, the concentration of the phosphor of each wavelength conversion member 5 is set. The chromaticity difference Δx is a difference in the x component of chromaticity between the plurality of wavelength conversion members 5, 5,. The chromaticity difference Δy is a difference in y component of chromaticity between the plurality of wavelength conversion members 5, 5,.

  In the light emitting device 1 according to the present embodiment, by using the wavelength conversion member 5 as described above, the light emitted from the light emitting element 4 and emitted from the phosphor and the light passing through the wavelength conversion member 5 without colliding with the phosphor. The combined light with the excited light is radiated to the outside through the outer surface of the wavelength conversion member 5. Thereby, white light can be obtained as light emitted from the light emitting device 1 to the outside.

  The phosphor used for the wavelength conversion member 5 is not limited to the yellow phosphor, and may be a mixture of phosphors of a plurality of colors for the purpose of improving color adjustment and color rendering. Even with such a mixture, white light can be obtained as light emitted from the light emitting device 1 to the outside. For example, when a mixture of a red phosphor and a green phosphor is used as the phosphor, white light having high color rendering properties can be obtained as light emitted from the light emitting device 1 to the outside.

  The light emitting device 1 of the present embodiment can be used as a lighting fixture by being attached to various fixture bodies (not shown).

  In the light emitting device 1 of the present embodiment described above, the wavelength converting member 5 collectively seals the plurality of light emitting elements 4 and 4 to form the light emitting portion 31. Thereby, the light-emitting device 1 of this embodiment can reduce the number of the light emission parts 31 compared with the case where a wavelength conversion member seals the light emitting element separately one by one, and forms a light emission part, and adjoins. It is possible to increase the distance between the light emitting units 31 and 31 to be performed. As a result, it is possible to reduce the light emitted from the light emitting unit 31 from being reabsorbed by the adjacent light emitting units 31.

  Moreover, in the light-emitting device 1 of this embodiment, since the distance between the adjacent light emission parts 31 and 31 can be extended as mentioned above, the wavelength conversion members 5 and 5 of the adjacent light emission parts 31 and 31 are isolate | separated. And can be molded.

  Further, in the light emitting device 1 of the present embodiment, the wavelength conversion member 5 seals the plurality of light emitting elements 4 and 4 together, so that the plurality of wavelength conversion members individually seal the plurality of light emitting elements. The wavelength conversion member 5 can be made larger with respect to the light emitting element 4 than the case where it stops. Thereby, since the optical path length of the light radiated | emitted from the light emitting element 4 can be made substantially equivalent in a horizontal direction and a vertical direction, a light color can be closely approached.

  Further, in the light emitting device 1 of the present embodiment, a plurality of light emitting elements 4 and 4 are mounted close to each other on one surface 21 of the mounting substrate 2 to sufficiently secure a gap between the adjacent light emitting portions 31 and 31. However, the distance between the adjacent light emitting units 31, 31 can be shortened. Thereby, the tact at the time of shape | molding the wavelength conversion member 5 can be shortened.

(Embodiment 2)
As shown in FIG. 3, the light emitting device 1 according to the second embodiment is such that the wavelength conversion member 5 collectively seals a plurality of light emitting elements 4 and 4 arranged in the x direction in each light emitting unit 31. This is different from the light emitting device 1 according to Embodiment 1 (see FIG. 1). Hereinafter, the light emitting device 1 of the present embodiment will be described in detail. In addition, about the component similar to the light-emitting device 1 of Embodiment 1, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  In each light emitting unit 31 of the present embodiment, as shown in FIG. 3, a plurality (two in the illustrated example) of light emitting elements 4, 4 are arranged in the x direction (first direction) and arranged on one side of the mounting substrate 2. Mounted on the surface 21. The light emitting unit 31 in which the plurality of light emitting elements 4 and 4 are arranged in the x direction in this way is referred to as a light emitting unit 312. In addition, description is abbreviate | omitted about the function similar to the light emission part 31 (refer FIG. 1) of Embodiment 1. FIG.

  Similar to the wavelength conversion member 5 of the first embodiment, the wavelength conversion member 5 of the present embodiment is configured by a molded product of a mixture in which a transparent resin and a phosphor are mixed. However, the shape of the wavelength conversion member 5 of this embodiment is a substantially semi-elliptical sphere (including a semi-elliptical sphere), as shown in FIGS. The wavelength conversion member 5 is formed by dropping a liquid translucent resin in which a transparent resin and a phosphor are mixed into a region where a plurality of corresponding light emitting elements 4 and 4 are mounted, and dropping the translucent resin. Is cured so as to seal the corresponding plurality of light emitting elements 4, 4 and a plurality of pairs of bonding wires 6, 6. Here, the dropping position 51 of the translucent resin in the present embodiment is within the distance L3 between the end faces in the longitudinal direction (x direction) of the two light emitting elements 4 and 4, as shown in FIG. A point and the center of the length L4 of the light emitting element 4 in the short direction (y direction).

  Moreover, the light-emitting device 1 of this embodiment can be attached to various fixture main bodies (not shown) and used as a lighting fixture, similarly to the light-emitting device 1 of Embodiment 1.

  Also in the light emitting device 1 of the present embodiment described above, the distance between the adjacent light emitting units 31 and 31 can be increased as in the light emitting device 1 of the first embodiment. Thereby, it can reduce that the light radiated | emitted from the light emission part 31 is reabsorbed by the adjacent light emission part 31, and isolate | separates wavelength conversion members 5 and 5 of the adjacent light emission parts 31 and 31 from each other. And can be molded.

  Further, similarly to the light-emitting device 1 of the first embodiment, the optical path lengths of the light emitted from the light-emitting elements 4 can be made substantially equal in the horizontal direction and the vertical direction, so that the light color can be made nearly uniform. it can.

  In the present embodiment, similarly to the first embodiment, when the wavelength conversion member 5 is molded, the light transmitting resin other than one end of the bonding wire 6 emits light so that the liquid translucent resin does not follow the bonding wire 6. Wire bonding is performed by launching so as not to contact the element 4. However, if there is no problem in the strength of the bonding wire 6, the light emitting elements 4 and 4 may be wire-bonded by chip-on-chip.

(Embodiment 3)
As shown in FIG. 5, the light emitting device 1 according to the third embodiment is different from the first embodiment in that the second light emitting unit 32 in which the single light emitting element 4 is sealed with the wavelength conversion member 5 is combined with the light emitting unit 31. 2 is different from the light emitting device 1 according to FIG. Hereinafter, the light emitting device 1 of the present embodiment will be described in detail. In addition, about the component similar to the light-emitting device 1 of Embodiment 2, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  As shown in FIG. 5, the light emitting device 1 of the present embodiment includes a second light emitting unit 32 on the one surface 21 of the mounting substrate 2 separately from the light emitting unit 31.

  The second light emitting unit 32 includes a single light emitting element 4, a wavelength conversion member 5 that seals the light emitting element 4, and a pair of bonding wires 6 and 6. In addition, since the light emitting element 4 of the 2nd light emission part 32 is the same as the light emitting element 4 of the light emission part 31 except being sealed by the wavelength conversion member 5 single, detailed description is abbreviate | omitted. Further, since the bonding wire 6 of the second light emitting unit 32 is the same as the bonding wire 6 of the light emitting unit 31, detailed description thereof is omitted.

  The wavelength conversion member 5 of the second light emitting unit 32 is a phosphor that emits excitation light having a wavelength different from that of the light emitted from the light emitting element 4 by being excited by the light emitted from the single light emitting element 4. It is a member to include. The shape of the wavelength conversion member 5 of the second light emitting unit 32 is substantially a hemisphere (including a hemisphere). In addition, about the wavelength conversion member 5 of the 2nd light emission part 32, description is abbreviate | omitted about the function similar to the wavelength conversion member 5 of the light emission part 31. FIG.

  Moreover, the light-emitting device 1 of this embodiment can also be attached to various instrument main bodies (not shown) similarly to the light-emitting device 1 of Embodiment 2, and can be used as a lighting fixture.

  According to the light emitting device 1 of the present embodiment described above, fine adjustment of the chromaticity light distribution can be easily performed if the second light emitting unit 32 is disposed at an end portion where the color unevenness is the largest, for example. .

  In addition, the 2nd light emission part 32 like this embodiment is applicable not only to the light-emitting device 1 of Embodiment 2, but the light-emitting device 1 of Embodiment 1. FIG.

(Embodiment 4)
As shown in FIG. 6, the light emitting device 1 according to the fourth embodiment is provided on the one surface 21 of the mounting substrate 2 in which a plurality of light emitting portions 31, 31,. This is different from the light emitting device 1 according to Embodiment 1 (see FIG. 1). Hereinafter, the light emitting device 1 of the present embodiment will be described in detail. In addition, about the component similar to the light-emitting device 1 of Embodiment 1, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  As shown in FIG. 6, the plurality of light emitting units 31, 31,... According to the present embodiment are arranged in a staggered pattern on one surface 21 of the mounting substrate 2. In each light emitting unit 31, a plurality of light emitting elements 4 and 4 are arranged side by side in the y direction (second direction) as in the light emitting unit 31 of the first embodiment (see FIG. 1). In addition, description is abbreviate | omitted about the function similar to the light emission part 31 (refer FIG. 1) of Embodiment 1. FIG.

  Moreover, the light-emitting device 1 of this embodiment can be attached to various fixture main bodies (not shown) and used as a lighting fixture, similarly to the light-emitting device 1 of Embodiment 1.

  In the light emitting device 1 of the present embodiment described above, a plurality of light emitting portions 31, 31,... Are arranged on the one surface 21 of the mounting substrate 2 in a staggered pattern. Thereby, in the light emitting device 1 of the present embodiment, the distance between the adjacent light emitting units 31 and 31 is increased as compared with the case where a plurality of light emitting units are arranged in a grid pattern on one surface of the mounting substrate. be able to. As a result, it is possible to further reduce the light radiated from the light emitting unit 31 from being reabsorbed by the phosphor of the adjacent light emitting unit 31.

(Embodiment 5)
In the light emitting device 1 according to the fifth embodiment, as shown in FIG. 7, a plurality of light emitting units 31, 31,... Are arranged in a staggered pattern (alternately) and provided on one surface 21 of the mounting substrate 2. This is different from the light emitting device 1 according to the second embodiment (see FIG. 3). Hereinafter, the components of the light emitting device 1 of the present embodiment will be described. In addition, about the component similar to the light-emitting device 1 of Embodiment 2, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  As shown in FIG. 7, the plurality of light emitting portions 31, 31,... According to the present embodiment are arranged on the one surface 21 of the mounting substrate 2 in a staggered pattern. In each light emitting unit 31, a plurality of light emitting elements 4 and 4 are arranged side by side in the x direction (first direction) as in the light emitting unit 31 of the second embodiment (see FIG. 3). In addition, description is abbreviate | omitted about the function similar to the light emission part 31 (refer FIG. 3) of Embodiment 2. FIG.

  Moreover, the light-emitting device 1 of this embodiment can also be attached to various instrument main bodies (not shown) similarly to the light-emitting device 1 of Embodiment 2, and can be used as a lighting fixture.

  In the light emitting device 1 of the present embodiment described above, a plurality of light emitting portions 31, 31,... Are arranged on the one surface 21 of the mounting substrate 2 in a staggered pattern. Thereby, in the light emitting device 1 of the present embodiment, the distance between the adjacent light emitting units 31 and 31 is increased as compared with the case where a plurality of light emitting units are arranged in a grid pattern on one surface of the mounting substrate. be able to. As a result, it is possible to further reduce the light radiated from the light emitting unit 31 from being reabsorbed by the phosphor of the adjacent light emitting unit 31.

(Embodiment 6)
As illustrated in FIG. 8, the light emitting device 1 according to the sixth embodiment includes a second light emitting element 4 including the central light emitting element 4 when the number of light emitting elements 4 mounted on the one surface 21 of the mounting substrate 2 is an odd number. A light emitting unit 32 is provided. Hereinafter, the light emitting device 1 of the present embodiment will be described in detail. In addition, about the component similar to the light-emitting device 1 (refer FIG. 5) of Embodiment 3, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  The second light emitting unit 32 of the present embodiment includes a central light emitting element 4, a wavelength conversion member 5 that seals the light emitting element 4, and a pair of bonding wires 6 and 6. Note that a description of the same functions as those of the second light emitting unit 32 (see FIG. 5) of Embodiment 3 will be omitted.

  A plurality of light emitting units 31,... Of the present embodiment are provided around the second light emitting unit 32 around the second light emitting unit 32 on the one surface 21 of the mounting substrate 2.

  Further, as the plurality of light emitting units 31, 31,... Of the present embodiment, a light emitting unit 311 including a plurality of light emitting elements 4 and 4 arranged in the y direction (second direction), and an x direction (first). And a light emitting portion 312 including a plurality of light emitting elements 4 and 4 arranged in the direction (1).

  Similarly to the light-emitting device 1 of the third embodiment, the light-emitting device 1 of the present embodiment can be attached to various appliance main bodies (not shown) and used as a lighting fixture.

  Even if the number of the light emitting elements 4 is an odd number as in the light emitting device 1 of the present embodiment described above, the distance between the adjacent light emitting units 31 and 31 can be increased as in the light emitting device 1 of the first embodiment. . Thereby, it can reduce that the light radiated | emitted from the light emission part 31 is reabsorbed by the adjacent light emission part 31, and isolate | separates wavelength conversion members 5 and 5 of the adjacent light emission parts 31 and 31 from each other. And can be molded.

  Further, similarly to the light-emitting device 1 of the first embodiment, the optical path lengths of the light emitted from the light-emitting elements 4 can be made substantially equal in the horizontal direction and the vertical direction, so that the light color can be made nearly uniform. it can.

(Embodiment 7)
The light emitting device 1 according to the seventh embodiment is arranged in the order of the light emitting unit 312, the light emitting unit 311, and the light emitting unit 312 in the y direction of FIG. 9, and the light emitting device 1 according to the first embodiment (see FIG. 1). Is different. Hereinafter, the light emitting device 1 of the present embodiment will be described in detail. In addition, about the component similar to the light-emitting device 1 of Embodiment 1, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  In the light emitting device 1 of the present embodiment, in the y direction of FIG. 9, four light emitting units 312 are arranged in the x direction on the upper side, and eight (x direction) × 5 (y direction) light emitting units are arranged in the center. 311 are arranged in a lattice pattern, and four light emitting units 312 are arranged in the x direction on the lower side. That is, in the light emitting device 1 of the present embodiment, the light emitting units 311 and the light emitting units 312 are alternately arranged in the y direction of FIG.

  Moreover, the light-emitting device 1 of this embodiment can be attached to various fixture main bodies (not shown) and used as a lighting fixture, similarly to the light-emitting device 1 of Embodiment 1.

  In the light emitting device 1 of the present embodiment described above, in the y direction of FIG. 9, the light emitting unit 312 having a plurality of light emitting elements 4, 4 arranged in the x direction on the one surface 21 of the mounting substrate 2, Light emitting units 311 in which the light emitting elements 4 and 4 are arranged in the y direction are alternately provided. Thereby, in the y direction of FIG. 9, the light color of the light emitted from the light emitting device 1 to the outside can be made more uniform.

  In each embodiment, the light emission color of the light emitting element 4 is not limited to blue, and may be red or green, for example. That is, the material of the light-emitting element 4 is not limited to the GaN-based compound semiconductor material, and may be a GaAs-based compound semiconductor material, a GaP-based compound semiconductor material, or the like according to the emission color of the light-emitting element 4.

DESCRIPTION OF SYMBOLS 1 Light-emitting device 2 Mounting board 21 One surface 31 (311 and 312) Light-emitting part 32 2nd light-emitting part 4 Light-emitting element 5 Wavelength conversion member 6 Bonding wire

Claims (10)

A mounting board;
A light emitting portion provided on one surface of the mounting substrate,
The light emitting unit
A plurality of light emitting elements mounted on the one surface of the mounting substrate;
A wavelength converting member that emits light of a wavelength different from the incident light,
The wavelength conversion member collectively seals the plurality of light emitting elements.   The light emitting unit corresponds to the plurality of light emitting elements on a one-to-one basis, and each pair is provided along a first direction of the corresponding light emitting element to electrically connect the light emitting element and the mounting substrate. The light emitting device according to claim 1, further comprising a plurality of pairs of bonding wires.   The light emitting device according to claim 2, wherein the plurality of light emitting elements are mounted on the one surface of the mounting substrate side by side in a second direction intersecting the first direction.   The light emitting device according to claim 2, wherein the plurality of light emitting elements are mounted on the one surface of the mounting substrate side by side in the first direction.   5. The light emitting device according to claim 2, wherein a plurality of the light emitting units are provided in a lattice shape on the one surface of the mounting substrate.   The light emitting device according to claim 2, wherein a plurality of the light emitting units are provided in a staggered pattern on the one surface of the mounting substrate.   A second light emitting part including a single light emitting element mounted on the one surface of the mounting substrate and the wavelength conversion member for sealing the single light emitting element, separately from the light emitting part, The light emitting device according to claim 2, wherein the light emitting device is provided on the one surface of the mounting substrate.   The light emitting device according to claim 7, wherein a plurality of the light emitting units are provided around the second light emitting unit around the second light emitting unit on the one surface of the mounting substrate.   A plurality of the light emitting units are provided on the one surface of the mounting substrate, and a plurality of the light emitting units include a light emitting unit in which the plurality of light emitting elements are arranged in the first direction, and the plurality of light emitting elements are the first light emitting units. The light emitting device according to claim 2, further comprising: a light emitting unit arranged in a second direction intersecting with the first direction. The light emitting device according to any one of claims 1 to 9,
A lighting fixture comprising: a fixture main body to which the light emitting device is attached.

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