JP2014127554A - Light-emitting device, luminaire and lighting fixture - Google Patents

Abstract

Provided are a light emitting device, a lighting device, and a lighting fixture that can suppress the light emission efficiency as compared with the conventional case when mounting light emitting elements having different peak wavelengths of light emission on the same surface.
A wiring pattern is formed on a substrate of a light emitting device, and a first light emitting element and a second light emitting element having a light emission peak longer than a light emission peak wavelength of the first light emitting element are the main light emitting element. Each light emitting element is connected to the wiring pattern with a plurality of bonding wires, and the bonding wire connected to the first light emitting element and the bonding wire connected to the second light emitting element. Among these, two or more bonding wires are connected to the wiring pattern in a region between the first light emitting element and the second light emitting element.
[Selection] Figure 4

Description

  The present invention relates to a light emitting device, a lighting device, and a lighting fixture, and more particularly, to a technique capable of suppressing a decrease in luminous efficiency in a light emitting device including a plurality of light emitting elements having different emission colors.

Conventionally, a part of blue light emitted by a blue LED (Light Emitting Diode) as a light emitting element is converted into yellow light by a wavelength conversion member, and white light is obtained by mixing blue light and yellow light. A white light source has been put into practical use. Various light emitting devices using such a white light source have been commercialized.
However, the illumination light of the light emitting device using the white light source has poor color rendering properties as compared with natural light and fluorescent lamps. This is because the white light of the white light source lacks the red component. Therefore, it has been proposed to improve the color rendering by supplementing the red component by adding the red light to the white light of the white light source by combining the red light LED with the white light source (Patent Document 1). ).

  In addition, a technique is disclosed in which LEDs used for these light sources are directly mounted on a substrate and electrically connected to a wiring pattern on the substrate by a bonding wire (Patent Document 2).

JP 2012-64888 A International Publication No. 2011/129383

By the way, red LED is easy to absorb the light of blue LED which has a light emission peak in the shorter wavelength side. For this reason, in the light emitting device having the configuration in which the blue LED and the red LED are mounted on the same surface of the substrate as described above, of the light emitted from the blue LED, the light directed toward the red LED is absorbed by the LED. This is unavoidable.
However, in the conventional configuration, in addition to the light absorption by the red LED, the bonding wire absorbs part of the light emitted from the blue LED and part of the light emitted from the red LED, resulting in poor luminous efficiency. There is a problem of lowering as desired.

  Therefore, the present invention has been made in view of such problems, and effectively suppresses a decrease in light emission efficiency caused by bonding wires when light emitting elements having different light emission colors are mounted on the same surface of a substrate. It is an object to provide a light-emitting device, a lighting device, and a lighting fixture.

  In order to solve the above problems, a light-emitting device, a lighting device, and a lighting fixture according to the present invention include a first light-emitting element and a second light-emitting element having a light emission peak on a longer wavelength side than a light emission peak wavelength of the first light-emitting element. An element, a substrate on which a wiring pattern is formed, and a plurality of bonding wires for connecting the first light emitting element and the second light emitting element to the wiring pattern, the first light emitting element and the second light emitting element, Is mounted on the main surface, and a part of the wiring pattern is formed in a region between the first light emitting element and the second light emitting element, and is connected to the first light emitting element. Two or more bonding wires of the bonding wires connected to the second light emitting element are connected to the wiring pattern in the region.

  With the above-described configuration, bonding wires that can cause a decrease in light emission efficiency can be concentrated in a region between adjacent light emitting elements having different light emission colors. Even if a part of the emitted light is absorbed by the bonding wire in this region, the light emitted to this region can be absorbed by the light emitting element originally, which reduces the luminous efficiency. There is nothing. On the other hand, since the light emitted in the direction where there is no light emitting element that absorbs the emitted light is not absorbed by the bonding wire, the decrease in the light emission efficiency can be effectively suppressed.

Sectional drawing which shows the lighting fixture 1 which concerns on one Embodiment of this invention. The perspective view which shows the illuminating device 6 which concerns on one Embodiment of this invention. The disassembled perspective view which shows the illuminating device 6 which concerns on one Embodiment of this invention. The figure which shows the light-emitting device 10 which concerns on one Embodiment of this invention. The conceptual diagram which shows each arrangement | positioning of the light emitting element from which an emission peak wavelength differs. The figure which shows the example of arrangement | positioning of the light emitting element of the light-emitting device 110 which concerns on the modification 1. The figure which shows the example of arrangement | positioning of the light emitting element of the light-emitting device 210 which concerns on the modification 2. The figure which shows the example of arrangement | positioning of the light emitting element of the light-emitting device 310 which concerns on the modification 3. The figure which shows the example of arrangement | positioning of the light emitting element of the light-emitting device 410 which concerns on the modification 4. The figure which shows the example of arrangement | positioning of the light emitting element of the light-emitting device 510 which concerns on the modification 5. FIG. The figure which shows the example of arrangement | positioning of the light emitting element of the light-emitting device 610 which concerns on the modification 6. The figure which shows the example of arrangement | positioning of the light emitting element of the light-emitting device 710 which concerns on the modification 7. The figure which shows the example of the sealing member of the light-emitting device which concerns on the modification 8. The figure which shows the example of the sealing member of the light-emitting device which concerns on the modification 9. The figure which shows the example of the sealing member of the light-emitting device which concerns on the modification 10. The figure which shows the example of the sealing member of the light-emitting device which concerns on the modification 11. The figure which shows the example of the sealing member of the light-emitting device which concerns on the modification 12. The figure which shows the example of the sealing member of the light-emitting device which concerns on the modification 13. The figure which shows the example by which the sealing member of the light-emitting device which concerns on the modification 14 is covered with the lens. The figure which shows the example by which the sealing member of the light-emitting device which concerns on the modification 15 is covered with resin. The figure which shows the illuminating device 800 which concerns on the modification 16. Sectional drawing which shows the illuminating device 600 which concerns on the modification 17. The perspective view which shows the illuminating device 700 which concerns on the modification 18. FIG. The exploded perspective view which shows the illuminating device 700 which concerns on the modification 18. Sectional drawing which shows the illuminating device 700 which concerns on the modification 18.

<1. Embodiment 1>
<Configuration>
A lighting fixture, a lighting device, and a light emitting device according to an embodiment of the present invention will be described with reference to the drawings.
(lighting equipment)
FIG. 1 is a cross-sectional view showing a lighting fixture 1 according to an embodiment of the present invention. As shown in FIG. 1, a lighting fixture 1 according to an embodiment of the present invention is a downlight that is attached so as to be embedded in a ceiling 2, for example, and includes a fixture 3, a circuit unit 4, a dimming unit 5, and An illumination device 6 is provided.

  The appliance 3 is made of metal, for example, and includes a lamp housing portion 3a, a circuit housing portion 3b, and an outer casing portion 3c. The lamp accommodating portion 3a is, for example, a bottomed cylindrical shape, and the illumination device 6 is detachably attached inside. The circuit housing part 3b extends, for example, on the bottom side of the lamp housing part 3a, and the circuit unit 4 is housed therein. The outer collar portion 3c is, for example, an annular shape, and extends outward from the opening of the lamp housing portion 3a. In the fixture 3, the lamp housing portion 3a and the circuit housing portion 3b are embedded in the embedded hole 2a penetrating the ceiling 2, and the outer flange portion 3c is in contact with the peripheral portion of the embedded hole 2a on the lower surface 2b of the ceiling 2. In this state, it is attached to the ceiling 2 by, for example, an attachment screw (not shown).

The circuit unit 4 is for lighting the illuminating device 6, and has a power supply line 4 a connected to the illuminating device 6, and a connector 72 of a lead wire 71 of the illuminating device 6 at the tip of the power supply line 4 a. A connector 4b that is detachably connected is attached.
The dimming unit 5 is for the user to adjust the luminance of the illumination light of the lighting device 6, and is connected to the circuit unit 4, and outputs a dimming signal to the circuit unit 4 in response to a user operation. To do.

(Lighting device)
FIG. 2 is a perspective view showing the illumination device 6 according to an embodiment of the present invention. FIG. 3 is an exploded perspective view showing the lighting device 6 according to the embodiment of the present invention. 2 and 3, the lighting device 6 is a lamp unit including, for example, the light emitting device 10, the base 20, the holder 30, the decorative cover 40, the cover 50, the cover pressing member 60, the wiring member 70, and the like. .

First, the base 20, the holder 30, the decorative cover 40, the cover 50, the cover pressing member 60, and the wiring member 70 will be briefly described, and the light-emitting device 10 will be described in detail thereafter.
(base)
The base 20 is, for example, a disk shape made of aluminum die cast, and has a mounting portion 21 in the center on the upper surface side, and the light emitting device 10 is mounted on the mounting portion 21. Further, on the upper surface side of the base 20, screw holes 22 for screwing assembly screws 35 for fixing the holder 30 are provided on both sides of the mounting portion 21. An insertion hole 23, a boss hole 24, and a notch 25 are provided in the peripheral portion of the base 20. The roles of the insertion hole 23, the boss hole 24, and the notch 25 will be described later.

(holder)
The holder 30 has, for example, a bottomed cylindrical shape, and includes a disc-shaped presser plate portion 31 and a cylindrical peripheral wall portion 32 extending from the periphery of the presser plate portion 31 toward the base 20. The light emitting device 10 is fixed to the base 20 by pressing the light emitting device 10 against the mounting portion 21 with the pressing plate portion 31.

  A window hole 33 for exposing a portion where the light emitting elements 12 and 13 of the light emitting device 10 are disposed is formed in the center of the pressing plate portion 31. In addition, an opening 34 for preventing the lead wire 71 connected to the light emitting device 10 from interfering with the holder 30 is formed in the peripheral portion of the pressing plate portion 31 in communication with the window hole 33. Yes. Further, an insertion hole 36 for inserting the assembly screw 35 is provided in a circumferential portion of the presser plate portion 31 of the holder 30 at a position corresponding to the screw hole 22 of the base 20.

With the portion where the light emitting elements 12 and 13 of the light emitting device 10 are arranged exposed from the window hole 33 of the holder 30, the substrate 11 of the light emitting device 10 is sandwiched between the base 20 and the holder 30, and the assembly screw 35 is The holder 30 and the base 20 are fixed by being inserted into the screw insertion hole 36 from above the holding plate portion 31 of the holder 30 and screwed into the screw hole 22 of the base 20.
(Decorative cover)
The decorative cover 40 is, for example, an annular shape made of a non-translucent material such as a white opaque resin, and is disposed between the holder 30 and the cover 50, and the lead wire 71 exposed from the opening 34 or The assembly screw 35 and the like are covered and hidden. In the center of the decorative cover 40, a window hole 41 for exposing a portion where the light emitting elements 12 and 13 of the light emitting device are arranged is formed.

(cover)
The cover 50 is made of a translucent material such as silicone resin, acrylic resin, or glass, for example, and light emitted from the light emitting elements 12 and 13 passes through the cover 50 and is taken out of the illumination device 6. . The cover 50 has a dome-like body portion 51 that covers the light emitting elements 12 and 13 and has a lens function, and an outer flange portion 52 that extends outward from the peripheral edge of the body portion 51. The outer flange 52 is fixed to the base 20.

(Cover holding member)
The cover pressing member 60 is made of a non-translucent material such as a metal such as aluminum or a white opaque resin, for example, and has an annular plate shape so as not to block light emitted from the main body 51 of the cover 50. ing. The outer flange portion 52 of the cover 50 is sandwiched and fixed between the cover pressing member 60 and the base 20.

  A cylindrical boss portion 61 that protrudes toward the base 20 is provided on the lower surface side of the cover pressing member 60. In addition, a semicircular cutout portion 53 for avoiding the boss portion 61 is formed in the outer flange portion 52 of the cover 50 at a position corresponding to the boss portion 61. Furthermore, a boss hole 24 for inserting the boss portion 61 into a position corresponding to the boss portion 61 is formed in the peripheral portion of the base 20.

The boss portion 61 of the cover pressing member 60 is inserted into the boss hole 24 of the base 20, and laser light is irradiated from the lower side of the base 20 to the tip portion of the boss portion 61 so that the tip portion does not come out of the boss hole 24. The cover pressing member 60 is fixed to the base 20 by plastic deformation.
Semicircular cutout portions 54 and 62 are formed at positions corresponding to the insertion holes 23 of the base 20 at the outer peripheral portion 52 of the cover 50 and the peripheral portion of the cover pressing member 60, respectively. A mounting screw (not shown) to be inserted does not hit the cover pressing member 60 or the cover 50.

(Wiring member)
The wiring member 70 has a pair of lead wires 71 connected to the light emitting device 10, and a connector 72 is attached to the end of the lead wires 71 opposite to the side connected to the light emitting device 10. Yes. The lead wire 71 of the wiring member 70 connected to the light emitting device 10 is led out of the lighting device 6 through the cutout portion 25 of the base 20.

(Light emitting device)
4A and 4B are diagrams showing a light emitting device 10 according to an embodiment of the present invention, in which FIG. 4A is a plan view, FIG. 4B is a right side view, and FIG. 4C is a front view.
In order to facilitate understanding of the arrangement of the light emitting element 12 having a blue emission color and the light emitting element 13 having a red emission color, in FIG. 4, the light emitting element 12 is a white rectangle and the light emitting element 13 has the same pattern. This is indicated by the attached rectangle. Hereinafter, a blue light emitting element is referred to as a “blue light emitting element”, and a red light emitting element is referred to as a “red light emitting element”.

As shown in FIG. 4, the light-emitting device 10 is assembled from a substrate 11, a plurality of light-emitting elements 12, a plurality of light-emitting elements 13, a sealing member 18, terminal portions 15a to 15d, wirings 16a to 16q, and wires 17a to 17c. It has been. Note that the letter “o” is not used as a symbol because it is confused with the number “0”.
The substrate 11 has, for example, a two-layer structure of an insulating layer made of a ceramic substrate or a heat conductive resin and a metal layer made of an aluminum plate or the like. A plurality of light emitting elements 12 and 13 are mounted on the upper surface 11 a of the substrate 11.

The light emitting elements 12 and 13 are, for example, LEDs, and are mounted face-up on the upper surface 11a of the substrate 11 using COB (Chip on Board) technology.
The light emitted from the light emitting element 12 is, for example, blue light having a peak wavelength of 450 [nm] or more and 470 [nm] or less. The light emitted from the light emitting element 13 is, for example, red light having a peak wavelength of 615 [nm] or more and 640 [nm] or less.

  In the example of FIG. 4A, a linear element array composed of six light-emitting elements 12 and an element array composed of six light-emitting elements 13 each have four lines, for a total of eight lines in parallel. They are arranged side by side. Specifically, from the right side of the figure, a row of blue light emitting elements 12, a row of red light emitting elements 13, a row of red light emitting elements 13, a row of blue light emitting elements 12, a row of blue light emitting elements 12, The red light emitting elements 13, the red light emitting elements 13, and the blue light emitting elements 12 are arranged in this order.

  The sealing member 18 is made of, for example, a translucent material, and seals the entire elements of the light emitting elements 12 and 13 belonging to all the eight element rows. As the translucent material, for example, silicone resin, epoxy resin, fluorine resin, silicone-epoxy hybrid resin, urea resin, or the like can be used. Since the wavelength conversion material is mixed in the translucent material, the sealing member 18 functions as a wavelength conversion member. Examples of the wavelength conversion material include phosphor particles. The wavelength conversion member according to the present embodiment, for example, emits blue light from the light emitting element 12 with light having a peak wavelength of 535 [nm] or more and 555 [nm] or less and a half-value width of 50 [nm] or more and 70 [nm] or less. Wavelength conversion. Thereby, white light is obtained by the color mixture of the unconverted blue light and the converted light. Further, the red light of the light emitting element 13 is added to the white light to generate white light with good color rendering properties, and the white light is emitted outside the sealing member.

The terminal portions 15 a to 15 d are configured by a conductor pattern formed on the substrate 11. The terminal portion 15 a and the terminal portion 15 d function as power supply to the light emitting element 12, and the terminal portion 15 b and the terminal portion 15 c function as power supply to the light emitting element 13. Power is supplied from the circuit unit 4 to the terminal portion.
The terminal portions 15a to 15d are formed on the peripheral edge portion of the upper surface 11a of the substrate 11 as shown in FIG. The wirings 16 a to 16 l are also configured by a conductor pattern formed on the upper surface 11 a of the substrate 11. The wirings 16m to 16q are conductor patterns formed on the inner layer of the substrate, and are electrically connected to the terminal portion 15c. Hereinafter, in the present specification, the expression “connect” is used to mean an electrical connection unless otherwise specified.

The positive electrode of the light emitting element 12 in the rightmost column in FIG. 4A is connected to the terminal portion 15a via the wiring 16a and the wire 17a, and the negative electrode of the light emitting element 12 is connected to the wiring 16b and the wire 17b. Are connected to the terminal portion 15d. The wires 17a and 17b are, for example, gold (Au) wires having a thickness of 25 [μm].
The positive electrodes in the second row of the light emitting elements 13 from the right in the figure are connected to the terminal portion 15b through the wiring 16c and the wire 17c. Further, the negative electrodes of the second row of light emitting elements 13 from the right are formed on the lower surface of the elements, and are connected to the terminal portion 15c through the wiring 16m through a through hole or the like.

The wiring 16a, the wiring 16b, and the wiring 16c are arranged between the rightmost row of the light emitting elements 12 in the drawing and the row of the light emitting elements 13 that emit light in different colors from the adjacent light emitting elements 12 in the second row from the right. Is formed.
The wires 17a and 17b respectively connected to the positive electrode and the negative electrode of the light emitting element 12 are between the light emitting elements 13 having the shortest distance between the light emitting elements among the adjacent light emitting elements 13 having different emission peak wavelengths. Are connected to wirings 16a and 16b, respectively. Similarly, the wire 17c connected to the positive electrode of the light emitting element 13 is also connected to the wiring 16c in the region between the adjacent light emitting elements 12 among the light emitting elements 12 having different emission peak wavelengths. It is connected. From the right side of the figure, the first row, the second row, the third row, the fourth row, the fifth row, the sixth row, the seventh row, the eighth row, and the fifth row and the sixth row. The set is the same as the set of the first row and the second row, and the set of the third row and the fourth row and the set of the seventh row and the eighth row are set of the first row and the second row. The configuration is reversed left and right. In each light emitting element column set, wirings 16e, 16g, and 16k are wiring 16a, wirings 16f, 16h, and 16l are wiring 16b, wirings 16d, 16i, and 16j are wiring 16c, and wirings 16n, 16p, and 16q are wiring. It corresponds to 16m.

In addition, the distance between light emitting elements is the distance from the center of each light emitting element to a center, for example. In addition, when there is a positional relationship in which no other light emitting elements are arranged on a line segment that connects the centers of two different light emitting elements that are located apart from each other, the two light emitting elements are positioned adjacent to each other. Suppose that it is a relationship.
(Reason why the light emitting device 10 can suppress a decrease in luminous efficiency)
FIG. 5 is a conceptual diagram showing individual arrangements of light emitting elements having different emission peak wavelengths.

The blue LED corresponds to the light emitting element 112 in FIG. 5, the red LED corresponds to the light emitting element 113, and the bonding wires correspond to the wires 117a to 117c.
The gold wire used for the bonding wire has a lower light reflectance than the substrate, absorbs both a part of the light emitted by the blue LED and a part of the light emitted by the red LED, and reduces the luminous efficiency. Cause.

A common blue LED element currently manufactured uses a transparent sapphire as a base, and light from the light emitting layer passes through the sapphire and emits light from the entire surface of the light emitting element. In the example of FIG. 5, out of the light emitted from the light emitting element 112, the emitted light L1 is absorbed by the wires 117a and 117b.
By the way, the red LED easily absorbs the light of the blue LED having a light emission peak on the shorter wavelength side, and even if there is no bonding wire in the region A, the emitted light L1 is originally light absorbed by the light emitting element 113. The luminous efficiency is not lowered compared to the conventional case.

On the other hand, the outgoing lights L2 and L3 emitted to the other areas are not obstructed by the bonding wires, and the light is not absorbed.
The above is not limited to the combination of a blue LED and a red LED, and any combination may occur in a combination of LEDs having different emission colors, that is, a combination of LEDs having different emission peak wavelengths.
<2. Modification>
(Light emitting device)
The light emitting device according to the present invention is not limited to the light emitting device 10 according to the above embodiment.

Below, the arrangement | positioning of a light emitting element, the variation of wiring, and the variation of a sealing part agent are demonstrated. In addition, when the same member as the member already demonstrated is used, the code | symbol same as the member is attached | subjected and description is simplified or abbreviate | omitted. Similarly to FIG. 4, the light emitting element 12 is a white rectangle, and the light emitting element 13 is a rectangle with the same pattern.
(Modification 1)
6A and 6B are diagrams showing a light emitting device 110 according to the first modification, wherein FIG. 6A is a plan view, FIG. 6B is a right side view, and FIG. 6C is a front view.

In the light emitting device 110 illustrated in FIG. 6, the arrangement of the light emitting elements is the same as that of the light emitting device 10, but the wiring pattern is different. The light emitting device 110 is configured to connect each of the light emitting elements 12 constituting one row in series.
The positive electrodes of the light-emitting elements 12 in the first row from the right in the figure are connected in series with the wiring 116a through the wire 17a and the negative electrode through the wire 17b. Thus, a series circuit from the terminal portion 15a to the terminal portion 15d is configured.

Similarly, the positive electrodes of the light emitting elements 13 in the second row from the right are connected to the wiring 116b through the wire 17c, and constitute a series circuit from the terminal portion 15b to the terminal portion 15c. A connection point between the wires 17a and 17b and the wiring 116a and a connection point between the wire 17c and the wiring 116b are provided in regions between adjacent light emitting elements of different colors.
From the right side of the figure, the first row, the second row, the third row, the fourth row, the fifth row, the sixth row, the seventh row, the eighth row, and the fifth row and the sixth row. The set is the same as the set of the first row and the second row, and the set of the third row and the fourth row and the set of the seventh row and the eighth row are the left and right sets of the first row and the second row set. This is an inverted configuration. In each set of light emitting element columns, the wirings 116d, 116e, and 116h correspond to the wiring 16a, and the wirings 116c, 116f, and 116g correspond to the wiring 116b.

  As described above, since the wire can be disposed in a region between adjacent different light emitting elements, that is, a region in a direction in which the light emitted from the light emitting element 12 is absorbed, the light emitted in the other direction is the wire. Can be unimpeded. Moreover, wiring can be simplified by connecting the same light emitting element in series. Furthermore, since the same current flows in each element connected in series, the light emission control of each light emitting element becomes easy.

(Modification 2)
7A and 7B are diagrams showing a light-emitting device according to Modification Example 2. FIG. 7A is a plan view, FIG. 7B is a right side view, and FIG. 7C is a front view.
The light-emitting device 210 shown in FIG. 7 connects the light-emitting elements constituting each column in series as in the light-emitting device 110 of Modification 1, but the arrangement of the light-emitting elements and the wiring pattern are different.

  The arrangement of the light emitting elements of the light emitting device 110 is the same color, such as a blue light emitting element line, a red light emitting element line, a red light emitting element line, a blue light emitting element line, and so on. The arrangement of the light emitting elements adjacent to each other and the case where the light emitting elements of different colors are adjacent to each other are alternately arranged. However, the arrangement of the light emitting elements in the light emitting device 210 is the same as that of the blue light emitting elements 12. In this configuration, the rows of red light emitting elements 13 are alternately arranged. In the light emitting device 110, the wires 17a and 17b that connect the positive electrode and the negative electrode of the light emitting element 12 to the wiring are connected to the wiring on the same side surface side of the light emitting element, but the light emitting device 210 includes the wire 17a. , 17b are different in that they are connected to wiring on different side surfaces.

The wire 17a that connects the positive electrode of the first row of light emitting elements 12 and the wiring 216a from the right side of the figure is wired on the left side of the light emitting elements 12, that is, in the region between the adjacent second row of light emitting elements 13 from the right. A wire 17b that connects to 216a and connects the negative electrode of the light emitting element 12 and the wiring 216a is connected to the wiring 216a on the right side of the light emitting element 12.
The wire 17c that connects the positive electrode of the light emitting element 13 and the wiring 216b is connected to the wiring 216b on the right side of the light emitting element 13, that is, in a region between the adjacent light emitting elements 12 from the right.

The light emitting elements 12 in the third, fifth, seventh, and ninth rows from the right in the figure have the same configuration as the light emitting elements 12 in the first row, and are in the fourth, sixth, and eighth rows. The light emitting element 13 has the same configuration as the light emitting elements 13 in the second row. The wirings 216c, 216e, 216g, and 216i correspond to the wiring 216a, and the wirings 216d, 216f, and 216h correspond to the wiring 216b.
In this manner, by alternately arranging the rows of light emitting elements that emit light of different colors, the light emitted from the light emitting elements can be easily mixed uniformly, and illumination light with reduced color unevenness can be emitted.

(Modification 3)
FIGS. 8A and 8B are diagrams showing a light emitting device 310 according to the third modification, where FIG. 8A is a plan view, FIG. 8B is a right side view, and FIG. 8C is a front view.
A light-emitting device 310 illustrated in FIG. 8 has a configuration in which the light-emitting elements are connected in parallel as in the light-emitting device 10 of the embodiment, but the arrangement of the light-emitting elements is different. The light emitting device 310 has a configuration in which the light emitting elements 12 and the light emitting elements 13 are staggered, that is, the light emitting elements are alternately arranged in a matrix.

As shown in FIG. 8A, in the light emitting elements constituting each column, the light emitting elements 12 and the light emitting elements 13 are alternately arranged, and the first column from the right is from above (the one closer to the terminal portion). The light emitting element 13, the light emitting element 12, the light emitting element 13,... Are arranged in this order, and the second row is arranged in the order of the light emitting element 12, the light emitting element 13, the light emitting element 12,.
The positive electrodes of the light emitting elements 12 in the first and second rows from the right are connected to the terminal portion 15a via the wiring 316a and the wire 17a, and the negative electrodes of the light emitting elements 12 are connected via the wiring 316b and the wire 17b. It is connected to the terminal portion 15d.

  The positive electrodes of the light emitting elements 13 in the first and second rows from the right are connected to the terminal portion 15b via the wiring 316c and the wire 17c, and the negative electrodes are wired in the same manner as the light emitting elements 13 of the light emitting device 10. It is connected to the terminal portion 15c through 316m. Similar to the light emitting device 10, the wirings 316 a and 316 b 316 c are formed between the first light emitting element row and the second light emitting element row.

  From the right side of the figure, the first row, the second row, the third row, the fourth row, the fifth row, the sixth row, the seventh row, the eighth row, one set, each set having the same configuration It is. In each set, the wirings 316d, 316g, and 316j correspond to the wiring 316a, the wirings 316e, 316h, and 316k correspond to the wiring 316b, the wirings 316f, 16i, and 16l correspond to the wiring 316c, and the wirings 316n, 316p, and 316q correspond to the wiring 316m.

As described above, by alternately arranging the light emitting elements that emit light of different colors both in the vertical direction and in the horizontal direction, it is possible to emit illumination light with reduced color unevenness (Modification 4).
FIGS. 9A and 9B are diagrams showing a light emitting device 410 according to the fourth modification, where FIG. 9A is a plan view, FIG. 9B is a right side view, and FIG. 9C is a front view.

The light emitting device 410 shown in FIG. 9 has the same configuration as that of the light emitting device 310 of Modification 3 in that the light emitting elements are arranged in a staggered manner. While the light emitting device 310 connected the light emitting elements in parallel, the light emitting device 410 differs in that the light emitting elements of the same color in each column are connected in series.
The wiring 416a forms a circuit that connects the terminal portion 15a and the terminal portion 15d by connecting the light emitting elements 12 in the first and second rows from the right in FIG. 9A in series.

  The wire 17a that connects the positive electrode of the first row of light emitting elements 12 and the wiring 416a from the right side of the drawing is wired on the left side of the light emitting elements 12, that is, in the region between the adjacent light emitting elements 13 in the second row from the right. The second light emitting element 12 is connected to the wiring 216a on the right side, that is, in the region between the adjacent first light emitting elements 13. Similarly, the wire 17b that connects the negative electrode of the light emitting element 12 and the wiring 216a is also connected to the wiring 216a in the region between the first and second rows. Similarly, the wire 17c that connects the positive electrode of the light emitting element 13 and the wiring 416b is also connected to the wiring 216b in the region between the first and second rows.

The first row, the second row, the third row, the fourth row, the fifth row and the sixth row, the seventh row and the eighth row, each set as one set, and each set has the same configuration. . In each set, the wirings 416c, 416e, and 416g correspond to the wiring 416a, and the wirings 416d, 416f, and 416h correspond to the wiring 416b.
As described above, since the wire can be disposed in a region between adjacent different light emitting elements, that is, a region in a direction in which the light emitted from the light emitting element 12 is absorbed, the light emitted in the other direction is the wire. Can be unimpeded. Moreover, wiring can be simplified by connecting the same light emitting element in series. Furthermore, since the same current flows in each element connected in series, the light emission control of each light emitting element becomes easy. Similarly to the light emitting device 310, the light emitting elements that emit light in different colors are arranged in a staggered manner, so that illumination light with reduced color unevenness can be emitted.

(Modification 5)
10A and 10B are diagrams showing a light-emitting device 510 according to the modified example 5. FIG. 10A is a plan view, FIG. 10B is a right side view, and FIG. 10C is a front view.
A light-emitting device 510 illustrated in FIG. 10 has a structure in which each light-emitting element is connected in parallel as in the light-emitting device 10 of the embodiment, but the arrangement of the light-emitting elements is different. The light-emitting device 510 has a configuration in which the light-emitting elements 12 and the light-emitting elements 13 are arranged in a circular shape that is a kind of an annular shape so that the square annular axes formed by the respective light-emitting elements coincide with each other. It is.

  A wiring 516a connected to the terminal portion 15a and a wiring 516b connected to the terminal portion 15d are provided between the first row and the second row of light emitting elements from the right in FIG. The positive electrodes of the light-emitting elements 12 in the first row from the right in the drawing are connected to the wiring 516a by wires 17a, and the negative electrode is connected to the wiring 516b by wires 17b. Between the second row and the third row of light emitting elements from the right in the figure, the wiring 516d connected to the terminal portion 15a, the wiring 516e connected to the terminal portion 15d, and the terminal portion 15b are connected. Wiring 516c is provided, the positive electrodes of the light emitting elements 12 in the second and third rows from the right are connected to the wiring 516d by the wire 17a, and the negative electrode is connected to the wiring 516e by the wire 17b. The positive electrodes of the light emitting elements 13 in the second and third rows from the right are connected to the wiring 516c by a wire 17c. The groups of the light emitting elements in the fourth, fifth, and sixth columns from the right in the figure have a configuration in which the groups of the light emitting elements in the first, second, and third columns are reversed left and right. The wiring 516f, the wiring 516g, the wiring 516h, the wiring 516i, and the wiring 516j correspond to the wiring 516d, the wiring 516e, the wiring 516c, the wiring 516a, and the wiring 516b, respectively. The negative electrode of the light emitting element 13 constituting the second annular shape from the inside is connected to the terminal portion 15c through the wiring 516k in the same manner as the light emitting element 13 of the light emitting device 10. The ring shape is not limited to a square ring shape, but may be another shape such as an annular shape.

As described above, by arranging the light emitting elements in a ring shape, it is possible to emit illumination light with reduced color unevenness in all directions of 360 degrees around the ring axis.
(Modification 6)
11A and 11B are diagrams showing a light emitting device 610 according to the modified example 6, where FIG. 11A is a plan view, FIG. 11B is a right side view, and FIG. 11C is a front view.

  The light emitting device 610 has a configuration in which light emitting elements of the same color are connected in series like the light emitting devices 110, 210, and 410, but the arrangement of the light emitting elements is different. In the light emitting device 610, as shown in FIG. 11A, the light emitting elements 12 and the light emitting elements 13 are alternately arranged at intervals in an annular shape, and a plurality of the annular arrangements are arranged concentrically. It is the composition which is. In the example of the figure, each light emitting element is arranged on three concentric circles. The positive electrode of the light emitting element 12 arranged on the outermost circumference is connected to the wiring 16a by a wire 17a in the region between the adjacent light emitting elements 13 on the same circumference, and the negative electrode is the same The wire 17b is connected to the wiring 16a. The positive electrode of the light emitting element 13 arranged on the outermost circumference is connected to the wiring 16b by a wire 17c in a region between the adjacent light emitting elements 12 on the same circumference, and the negative electrode is a wire It is connected to the wiring 16b without going through. By connecting in this way, the series circuit which connects the terminal part 15a to the terminal part 15d is comprised. The light emitting elements 12 on the middle circumference and the light emitting elements 12 on the innermost circumference have the same wiring structure, although the number of arranged light emitting elements is different. The wirings 616c and 616e correspond to the wiring 616a, and the wirings 616d and 616d correspond to the wiring 616b.

The annular shape is not limited to an annular shape, but may be other shapes such as a square annular shape.
By alternately arranging the light emitting elements in a ring shape, illumination light having no color unevenness can be emitted in all directions of 360 degrees around the ring axis.
(Modification 7)
12A and 12B are diagrams showing a light-emitting device 710 according to the modification 7. FIG. 12A is a plan view, FIG. 12B is a right side view, and FIG. 12C is a front view.

  The light emitting device 710 has substantially the same configuration as the light emitting device 10 of the embodiment, but as shown in FIG. 12A, the number of light emitting elements constituting each light emitting element row decreases as the distance from the center increases. The difference is in the configuration. Further, in the light emitting device 10, all the light emitting elements are sealed with one sealing member. However, the light emitting device 710 is different in that it is sealed with a different sealing member for each row of light emitting elements. .

  The connection method between the light emitting elements and the wirings for each column is the same as that of the light emitting device 10, and the wirings 716 a, 716 b, and 716 c correspond to the wirings 16 a, 16 b, and 16 c of the light emitting device 10, respectively. As shown in the figure, the 8th, 7th, 6th, and 5th columns from the right have the same configuration as the 1st, 2nd, 3rd, and 4th columns, respectively. The wirings 716d, 716g, and 716j correspond to the wiring 716a, the wirings 716e, 716h, and 716k correspond to the wiring 716b, the wirings 716f, 716i, and 716l correspond to the wiring 716c, and the wirings 716n, 716p, and 716q correspond to the wiring 716m.

Thus, the amount of light to be mixed can be flexibly changed by increasing or decreasing the number of light emitting elements.
The sealing member 18a that seals the blue light emitting element 12 uses the same sealing member as the sealing member 18, and the sealing member 18b that seals the red light emitting element 13 does not contain a phosphor. A colorless and transparent sealing member is used. Thus, a sealing member suitable for each light emitting element can be used, and the light emission efficiency can be further improved.

Next, the variation of the shape of the sealing member that seals each light emitting element will be described by taking the arrangement of the light emitting elements in the light emitting device 10 as an example. In addition, in the above-mentioned embodiment and modification, the shape of the sealing member demonstrated below may be sufficient.
(Modification 8)
FIG. 13 is an example of a sealing member of a light emitting device according to Modification 8.

FIG. 13 illustrates only the arrangement part of the light emitting elements 12 and 13 of the light emitting device 10. Similarly, in FIGS. 14 to 18, only the arrangement portion of the light emitting elements is illustrated.
In the light emitting device 10 described above, all the light emitting elements 12 and 13 are covered with one sealing member. However, in this modification, different sealing is performed for each set of the above light emitting elements 13 and 14 in a row. Sealed with part. The same member as the sealing member 18 may be used for the sealing member 18c. In this way, by sealing with a different sealing member for each set, the amount of the sealing member can be reduced as compared with the case where all the light emitting elements are covered with one sealing member.
(Modification 9)
FIG. 14 is an example of a sealing member of a light emitting device according to Modification 9.

In the modification 9, the row | line | column of the adjacent light emitting element of the same color is made into 1 set, and it seals with a different sealing member for every group.
If it does in this way, a different sealing member can be used for the sealing member of the light emitting element of a different color, respectively. For example, the sealing member 18e that seals the blue light-emitting element 12 is the same member as the sealing member 18, that is, a sealing member that contains a phosphor, and the sealing member that seals the red light-emitting element 13 Since a colorless and transparent sealing member that does not contain a phosphor can be used for 18d, a sealing member suitable for a light-emitting element can be used. Further, the amount of the sealing member can be reduced as compared with a case where all the light emitting elements are covered with one sealing member.
(Modification 10)
FIG. 15 is an example of a sealing member of a light emitting device according to Modification Example 10.

In the modified example 10, the light emitting elements 12 and 13 are sealed with different sealing members for each row. The sealing member 18e is the same member as the sealing member 18, that is, a sealing member including a phosphor. The sealing member 18f is a colorless and transparent sealing that does not include a phosphor similarly to the sealing member d. A stop member may be used.
Since it can seal with a different sealing member for every row | line | column, it can respond flexibly, for example when increasing or decreasing the row | line | column of a light emitting element. Further, the amount of the sealing member used can be reduced as compared with the case where all the light emitting elements are covered with one sealing member.
(Modification 11)
FIG. 16 is an example of a sealing member of a light emitting device according to Modification Example 11.

In the modification 11, the adjacent light emitting elements 12 and 13 are grouped one by one, and each group is sealed with a sealing member. A sealing member similar to the sealing member 18 may be used as the sealing member 18g.
Sealing in this way can flexibly cope with an increase or decrease in the number of light emitting elements in each column. Further, the amount of the sealing member used can be reduced as compared with the case where all the light emitting elements are covered with one sealing member.
(Modification 12)
FIG. 17 is an example of a sealing member of a light emitting device according to Modification 12.

In Modified Example 12, adjacent light emitting elements of the same color are used as one set, and each set is sealed with a different sealing member.
Similarly to the modified example 9, different sealing members can be used for the sealing members of the light emitting elements of different colors. For example, the sealing member 18i that seals the blue light-emitting element 12 is the same member as the sealing member 18, that is, a sealing member that contains a phosphor, and the sealing member that seals the red light-emitting element 13 For 18h, a colorless and transparent sealing member containing no phosphor may be used. A sealing member suitable for each light emitting element can be used. Further, the amount of the sealing member can be reduced as compared with a case where all the light emitting elements are covered with one sealing member.
(Modification 13)
FIG. 18 is an example of a sealing member of a light emitting device according to Modification Example 13.

  In the modified example 13, each light emitting element is sealed with a different sealing member. The sealing member 18 i that seals the blue light emitting element 12 is the same member as the sealing member 18, that is, a sealing member that includes a phosphor, and the sealing member 18 h that seals the red light emitting element 13 is used as the sealing member 18 h. A colorless and transparent sealing member that does not contain a phosphor may be used. A sealing member suitable for each light emitting element can be used. Further, the amount of the sealing member can be reduced as compared with a case where all the light emitting elements are covered with one sealing member.

(Modification 14)
FIG. 19 is an example in which the sealing member of the light emitting device 10 a according to the modification 14 is covered with the lens 19.
In the modified example 14, the entire sealing member that seals the light emitting element is covered with the lens 19. The lens 19 is formed of a member similar to the colorless and transparent sealing member. By covering with the lens 19 in this way, the light emitted from the light emitting element can be condensed, diffused, changed in direction, or the light distribution can be controlled.

(Modification 15)
FIG. 20 is an example in which the sealing member of the light emitting device 10 b according to the modification 15 is covered with the resin 201.
In the modified example 15, the upper surface 11 a of the substrate is covered with the resin 201. The resin 201 is formed of a member similar to the colorless and transparent sealing member. Thus, by covering the upper surface 11a of the substrate with the resin, the light emitting element, the sealing member, the wiring pattern on the upper surface 11a, and the like can be protected by the resin 201. The resin 201 is formed of the same member as the colorless and transparent sealing member. The terminal portions 15a to 15d in this case are provided on the surface opposite to the upper surface 11a of the substrate, and obtain power from the power source.
(Other variations of light emitting device)
Further, the light emitting device may be modified as follows.

  (1) In the embodiment, the example in which the electrodes (positive electrode and negative electrode) of the light emitting element and the wiring are connected by one bonding wire is shown. However, the number of bonding wires used for connection is one for each electrode. Is not limited. What is necessary is just to connect an electrode and wiring. For example, in the case of a high-power light-emitting element or the like, when a single bonding wire does not supply enough current for each electrode, two or more bonding wires may be connected to one electrode of the light-emitting element. .

  (2) In the light emitting device 10 according to the above embodiment, the number of the light emitting elements 12 and the number of the light emitting elements 13 are four, but the number of the light emitting elements is arbitrary. At least one for each color is sufficient. For example, each light emitting element may be one. Further, the number of the light emitting elements 12 and the light emitting elements 13 need not be the same. For example, the number of blue light emitting elements 12 may be twice that of red light emitting elements 13.

Further, although the number of light emitting elements constituting each column is six, the number of light emitting elements constituting each column is arbitrary. Furthermore, the number of light emitting elements in each column need not be the same. Each column may be composed of a different number of light emitting elements.
(3) The first light-emitting element according to the present invention is not limited to a blue light-emitting element that emits blue light having a peak wavelength of 450 [nm] or more and 470 [nm] or less, and emits blue light having other wavelengths. It may be a blue light emitting element or a light emitting element that emits ultraviolet (for example, emission peak wavelength is 330 [nm] to 390 [nm]) light.

The combination of the first light emitting element and the second light emitting element is not limited to the blue light emitting element and the red light emitting element. Any combination of light emitting elements having different emission colors may be used. For example, any combination of two light emitting elements of ultraviolet, purple, blue, green, and red may be used.
(4) The light emitting device only needs to be provided with light emitting elements of different emission colors, and may include, for example, light emitting elements that emit light in colors other than blue and red.

(5) A diffusion material may be mixed in the sealing member. Thereby, the light emitted from each light emitting element is diffused, and illumination light with reduced color unevenness can be emitted.
The sealing member may contain translucent fine particles for light scattering effect, adjustment of refractive index, improvement of thermal conductivity, improvement of thixotropy of the material of the sealing member 18 and the like. Microparticles, for _{example, SiO 2, Al 2 O 3} , ZnO, Y 2 O 3, TiO 2, ZrO 2, HfO 2, SnO 2, Ta 2 O 5, Nb 2 O 5, BaSO 4, ZnS, V 2 O Metal oxides such as ₅ and mixtures thereof can be used. For example, fine particles having a center particle size of 10 nm to 500 nm can be used.

(6) In the light emitting device of the present embodiment and the modification, a gold wire is used as a bonding wire for connecting the light emitting element and the wiring pattern. However, the bonding wire is not limited to using a gold wire. It is only necessary that the light emitting element and the wiring pattern can be electrically connected. For example, a highly conductive material such as silver (Ag) or an Ag compound may be used.
(7) In the present embodiment and the modification, the example in which the terminal portions of the terminal portions 15a to 15d of the light emitting device are mounted on the main surface of the substrate has been described, but the surface on which the terminal portions are mounted is not limited to the main surface. Any surface may be used as long as current from the power source can be supplied to each light emitting element. For example, a terminal portion may be provided on the opposite side of the main surface.

  Moreover, the wiring pattern of the positive electrode and the negative electrode of each light emitting element is not limited to the example shown in the present embodiment and the modification. Any wiring pattern that can supply current to the light emitting element may be used. For example, the wiring pattern of the positive electrode and the negative electrode may be opposite to the wiring pattern shown in the embodiment. Further, like the negative electrode wiring pattern of the second light emitting element, the positive electrode wiring pattern may be formed on the inner layer of the substrate, or conversely, the negative electrode wiring pattern is formed on the main surface. May be. Furthermore, the wiring pattern may not be provided on the main surface of the substrate. For example, all of the wiring patterns are formed on the inner layer of the substrate, and only the connection portion with the bonding wire is provided on the main surface of the substrate. A part of the pattern may be provided on the main surface of the substrate.

(8) At least a part of the circuit components that control lighting of the light emitting element may be mounted on the substrate of the light emitting device.
(9) In the present embodiment, the following phosphors may be used.
Depending on the excitation light from the light emitting element, the phosphor is BaMgAl ₁₀ O ₁₇ : Eu ²⁺ , which is an aluminate phosphor, and a halophosphate phosphor (Sr, Ba) ₁₀ (PO ₄ ). ) ₆ Cl ₂ : Eu ²⁺ , Sr ₁₀ (PO ₄ ) ₆ Cl ₂ : Eu ²⁺ , and silicate (silicate) phosphor Ba ₃ MgSi ₂ O ₈ : Eu ²⁺ can be preferably used.

As the fluorescent substance, Sr ₄ Al ₁₄ O ₂₅ : Eu ²⁺ as an aluminate fluorescent substance and Sr ₂ Si ₃ O ₈ .2SrCl ₂ : Eu ²⁺ as a silicate fluorescent substance are preferably used as a blue-green fluorescent substance. Can do.
The phosphor is a green phosphor, BaMgAl ₁₀ O ₁₇ : Eu ²⁺ , Mn ²⁺ , (Ba, Sr, Ca) Al ₂ O ₄ : Eu ²⁺ , (Ba, Sr) ₂ which is an aluminate phosphor. SiO ₄ : Eu ²⁺ , Sr _1.5 Al ₃ Si ₉ N _{16 as} an α-sialon phosphor: Eu ²⁺ , Ca-α-SiAlON: Yb ²⁺ , β-Si ₃ N _{4 as a} β-sialon phosphor: Eu ²⁺ , Ba ₃ Si ₆ O ₁₂ N _{2 as an} oxynitride phosphor: Eu ²⁺ , (Ba, Sr, Ca) Si ₂ O ₂ N ₂ : Eu ^{2+ as} an oxynitride aluminosilicate (Ba, Sr, Ca) ₂ Si ₄ AlON ₇ : Ce ³⁺ , (Ba, Sr, Ca) Al _2−x Si _x O _4−x N _x : Eu ²⁺ , (0 <x <2) nitride is a phosphor serving nitridosilicate _{(Ba, Sr, Ca) 2} Si 5 N 8: Ce 3+, sulfides firefly A body Thiogallate serving ^{_{SrGa 2 S 4: Eu 2+,}} Ca 3 Sc 2 Si 3 O 12 garnet ^{_{phosphor: Ce 3+, BaY 2 SiAl 4}} O 12: Ce 3+, Y 3 (Al, Ga) ₅ O ₁₂ : Ce ³⁺ and CaSc ₂ O ₄ : Ce ³⁺ which is an oxide phosphor can be preferably used.

The phosphor is a silicate phosphor (Sr, Ba) ₂ SiO ₄ : Eu ²⁺ , Sr ₃ SiO ₅ : Eu ²⁺ , and a garnet phosphor (Y, Gd) ₃ Al ₅ O ₁₂ as a yellow phosphor. : Ce ³⁺ , Y ₃ Al ₅ O ₁₂ : Ce ³⁺ , Y ₃ Al ₅ O ₁₂ : Ce ³⁺ , Pr ³⁺ , Tb ₃ Al ₅ O ₁₂ : Ce ³⁺ , thiogallate fluorescence which is a sulfide phosphor Body CaGa ₂ S ₄ : Eu ²⁺ , α-sialon phosphor Ca-α-SiAlON: Eu ²⁺ , (0.75 (Ca _0.9 Eu _0.1 ) O · 2.25AlN · 3.25Si ₃ N ₄ : Eu ²⁺ , Ca _1.5 Al ₃ Si ₉ N ₁₆ : Eu ²⁺ ), Ba ₃ Si ₆ O ₁₂ N ₂ : Eu ^{2+ as} an oxynitride phosphor, and a nitride phosphor (Ca, Sr, Ba) AlSiN ₃ : Eu ²⁺ can be preferably used.

The phosphors are orange phosphors such as (Sr, Ca) ₂ SiO ₄ : Eu ²⁺ which is a silicate phosphor, Gd ₃ Al ₅ O ₁₂ : Ce ^{3+ which} is a garnet phosphor, and Ca− which is an α-sialon phosphor. α-SiAlON: Eu ²⁺ can be preferably used.
As the red phosphor, thiogallate (Sr, Ca) S: Eu ²⁺ , La ₂ O ₂ S: Eu ³⁺ , Sm ³⁺ , which is a sulfide phosphor, and Ba ₃ MgSi, which is a silicate phosphor. ^{_{2 O 8: Eu 2+: Mn}} 2+, the nitride phosphor serving ^{_{CaAlSiN 3: Eu 2+, (Ca}} , Sr) SiN 2: Eu 2+, (Ca, Sr) AlSiN 3: Eu 2+, oxynitride serving object phosphor _{Sr 2 Si 5-x Al x} O x N 8-x: Eu 2+ (0 ≦ x ≦ 1), Sr 2 (Si, Al) 5 (N, O) 8: suitably Eu ²⁺ Can be used.

(Lighting device)
The lighting device according to the present invention is not limited to the lighting device 6 according to the above embodiment.
Although the said embodiment was a form which applied the illuminating device which concerns on this invention to the lamp unit for downlights, the form of a illuminating device is not limited to the said embodiment. Any lighting device may be used as long as it is a lighting device using the light emitting device according to the embodiment and the modification.

For example, the present invention may be applied to a straight tube LED lamp expected as an alternative to a straight tube fluorescent lamp as described below, or an LED bulb. The straight tube type LED lamp refers to an LED lamp having substantially the same shape as a conventional general straight tube fluorescent lamp using an electrode coil. The LED bulb refers to an LED lamp that has substantially the same shape as a conventional incandescent bulb.
(Modification 16)
FIG. 21 is a diagram illustrating an illumination device according to Modification Example 16. As shown in FIG. 21, the lighting device 800 includes a long cylindrical casing 801, a base 802 disposed in the casing 801, a white light source W and a red light source R mounted on the base 802. And a pair of caps 803 and 804 attached to both ends of the housing 801.

  The housing 801 has a long cylindrical shape having openings at both ends, and accommodates a white light source W, a red light source R, and a base 802. The material of the housing 801 is not particularly limited, but is preferably a translucent material. Examples of the translucent material include a resin such as plastic, glass, and the like. Note that the cross-sectional shape of the housing 801 is not particularly limited, and may be an annular shape or a polygonal shape.

The base 802 is a long plate having both ends extending to the vicinity of the pair of caps 803 and 804, and the length in the longitudinal direction is substantially the same as the length in the longitudinal direction of the housing 801. The base 802 preferably functions as a heat sink for dissipating the heat of the white light source W and the red light source R, and for that purpose, the base 802 is preferably formed of a highly thermally conductive material such as metal.
There is one white light source W and one red light source R, each of which has a long shape along the longitudinal direction of the base 802, and is arranged in parallel with a gap therebetween. The white light source W includes a plurality of blue light emitting elements 812 arranged in a line along the longitudinal direction of the base 802, and a long wavelength conversion member 813 that seals the blue light emitting elements 812. It consists of. The red light source R includes a plurality of red light emitting elements 814 arranged in a line along the longitudinal direction of the base 802, and a long sealing member 815 that seals the red light emitting elements 814. It consists of. As shown in the figure, on the base 802, wirings 816a to 816c are formed between the white light source W and the red light source R.

The positive electrode of the light-emitting element 812 is connected to the wiring 816a by a wire 817a, and the negative electrode is connected to the wiring 816b by a wire 817b.
The positive electrode of the light-emitting element 814 is connected to the wiring 816c by a wire 817c, and the negative electrode is connected to the wiring 816d without a wire.
The pair of caps 803 and 804 are attached to a socket of a lighting fixture (not shown). In a state where the lighting device 800 is attached to the lighting fixture, power is supplied to the white light source W and the red light source R through the pair of caps 803 and 804. In addition, heat generated by the white light source W and the red light source R is transmitted to the lighting fixture via the base 802 and the pair of bases 803 and 804.

(Modification 17)
FIG. 20 is a cross-sectional view showing an illumination device according to Modification 17. As illustrated in FIG. 20, the lighting device 600 according to the modified example 17 includes an LED bulb mainly including a light emitting device 10, a holder 620, a circuit unit 630, a circuit case 640, a base 650, a globe 660, and a housing 670. It is.

The light emitting device 10 is the same as the light emitting device 10 according to the above-described embodiment, and includes a substrate 11, a plurality of light emitting elements 12, a plurality of light emitting elements 13, and a sealing member 18, as shown in FIG. . White light is obtained by the light emitting element 12 sealing member 18, and red light is added by the light emitting element 13 to improve color rendering.
The holder 620 includes a light emitting device holding unit 621 and a circuit holding unit 622. The light emitting device holding unit 621 is a substantially disk-shaped member for attaching the light emitting device 10 to the housing 670, and is made of a highly heat conductive material such as aluminum. It also functions as a heat conducting member that conducts heat to the housing 670. The circuit holding unit 622 is, for example, a substantially circular dish formed of a synthetic resin, and is fixed to the light emitting device holding unit 621 with a screw 623. An engaging claw 624 for engaging with the circuit case 640 is provided on the outer periphery of the circuit holding portion 622.

The circuit unit 630 includes a circuit board 631 and a plurality of electronic components 632 mounted on the circuit board 631. The circuit board 631 is housed in a housing 670 in a state where the circuit board 631 is fixed to the circuit holding unit 622. And connected to the light emitting device 10. The circuit unit 630 corresponds to the circuit unit 4 according to the above embodiment.
The circuit case 640 is attached to the circuit holding unit 622 in a state where the circuit unit 630 is included. The circuit case 640 is provided with an engagement hole 641 that engages with the engagement claw 624 of the circuit holding part 622. By engaging the engagement claw 624 with the engagement hole 641, the circuit holding part A circuit case 640 is attached to 622.

  The base 650 is a base conforming to the standard of a base defined by JIS (Japanese Industrial Standards), for example, an E-type base, and is used for mounting on a socket (not shown) for a general incandescent lamp. The base 650 includes a shell 651, also called a cylindrical body, and a circular dish-shaped eyelet 652, and is attached to the circuit case 640. The shell 651 and the eyelet 652 are integrated with each other through an insulator portion 653 made of a glass material. The shell 651 is connected to one power supply line 633 of the circuit unit 630, and the eyelet 652 is connected to the other power supply line 634 of the circuit unit 630.

The globe 660 has a substantially dome shape, and the opening end 661 of the globe 660 is fixed to the housing 670 and the light emitting device holding portion 621 with an adhesive 662 so as to cover the light emitting device 10.
The housing 670 is, for example, cylindrical, and the light emitting device 10 is disposed on one opening side, and the base 650 is disposed on the other opening side. The housing 670 is formed using a material having good thermal conductivity, for example, aluminum as a base material in order to function as a heat radiating member (heat sink) that dissipates heat from the light emitting device 10.

(Modification 18)
As shown in FIGS. 23 to 25, the illumination device 700 of the present embodiment is an LED bulb that is a bulb-type lamp. The lighting device 700 is an LED bulb that replaces an incandescent bulb, and includes a translucent globe 723, a light emitting device 10, a base 726 that receives power from the outside, and a stem 729 that supports the light emitting device 10. . Further, the lighting device 700 includes a power supply line 725 c that supplies power to the light emitting device 10, and a lighting circuit portion 724 that is housed in a container constituted by a support member 722 c and a resin case 722 and lights the light emitting device 10. Yes. In the lighting device 700, an envelope is configured by a globe 723, a case 722, and a base 726.

Hereinafter, each component of the illumination device 700 will be described in more detail.
The globe 723 is a translucent member that houses the light emitting device 10 and transmits light from the light emitting device 10 to the outside of the lamp. The globe 723 is made of, for example, a hollow member made of silica glass that is transparent to visible light. Therefore, the lighting device 700 can visually recognize the light emitting device 10 housed in the globe 723 from the outside of the globe 723. The lighting device 700 hermetically seals the inside of the globe 723 and, for example, nitrogen gas, argon gas, dry air, or the like is sealed as a sealing gas.

  As shown in FIGS. 23 and 24, the globe 723 has an outer shape in which one end side of the globe 723 is closed in a spherical shape and the other end side has an opening 723aa. In the globe 723, the outer shape of the globe 723 is such that a part of a hollow sphere extends in a direction away from the center of the sphere and the outer shape narrows, and an opening is formed at a position away from the center of the sphere. 723aa is formed. For example, the outer shape of the globe 723 is the same shape as a general incandescent bulb.

Note that the globe 723 is not limited to silica glass but may be formed of a resin material such as an acrylic resin. The globe 723 does not necessarily need to be transparent with respect to visible light, and may be, for example, a translucent material coated with silica and provided with a milky white diffusion film.
The light emitting device 10 is housed in the globe 723. The light emitting device 10 is suitably arranged at a spherical center position formed by the globe 723. The substrate 701 of the light emitting device 10 is a multilayer substrate made of a translucent ceramic material. The lighting device 700 can obtain the light distribution characteristic approximate to the light distribution characteristic of a general incandescent bulb using a conventional filament coil when the light emitting device 10 is arranged at the center of the spherical shape of the globe 723. It is said.

  The light emitting device 10 is arranged so as to be positioned in the air inside the globe 723 (within the large diameter portion of the globe 723) by the four power supply lines 725c. The lighting device 700 supplies power to the light emitting device 10 through the power supply line 725c. The lighting device 700 can emit light from the first light-emitting element and the second light-emitting element in the light-emitting device 10 by supplying power from the four power supply lines 725c. In the light emitting device 10, the upper surface 701 aa on which the light emitting element is mounted is disposed toward the top of the globe 723.

  The multilayer substrate 701 is a multilayer substrate on which a light emitting element is mounted, and is made of a ceramic material that transmits light with respect to visible light. The multilayer substrate 701 is, for example, a rectangular flat plate-shaped alumina substrate. Note that in the lighting device 700, the multilayer substrate 701 is preferably a member having high visible light transmittance. As a result, the light emitting device 10 can emit light from the surface where the light emitting elements pass through the multilayer substrate 701 and the light emitting elements are not provided. Therefore, the light emitting device 10 emits light from the other surface 701ab of the multilayer substrate 701 even when the light emitting element is provided only on the upper surface 701aa side of the multilayer substrate 701, and has a light distribution characteristic that approximates that of an incandescent bulb. Can be obtained. Note that the multilayer substrate 701 does not necessarily have translucency. Further, the light-emitting element may be provided not only on the upper surface 701aa of the multilayer substrate 701 but also on the other surface 701ab side of the multilayer substrate 701.

  The base 726 is a power receiving unit that receives power for lighting each light emitting element of the light emitting device 10, and receives AC power. The lighting device 700 inputs the power received by the base 726 to the lighting circuit unit 724 via the lead wire 724a. The base 726 has an E shape, and has a metallic bottomed cylindrical shape. The lighting device 700 is used by being attached to an E26 base socket connected to a commercial AC power source.

Note that the base 726 is not necessarily an E26 type base, and may have any shape as long as it can receive power from an external commercial power source. For example, E17 type may be used. The base 726 is not necessarily a screw-in base, and may have a different shape such as a plug-in type.
The stem 729 is provided so as to extend from the vicinity of the opening 723aa of the globe 723 toward the inside of the globe 723. The stem 729 has a rod shape, and is configured so that one end is connected to the light emitting device 10 and the other end is connected to the support member 722c. The stem 729 is preferably made of a material having a thermal conductivity larger than that of the multilayer substrate 701 of the light emitting module 15. The stem 729 is made of, for example, an inorganic material such as a metal material (for example, aluminum (Al) or Al alloy) or ceramic. The stem 729 conducts heat generated when the light emitting device 10 emits light to the base 726 side.

  The stem 729 includes a first stem portion 729a connected to the light emitting device 10, a second stem portion 729c connected to the support member 722c, and an intermediate stem portion 729b between the first stem portion 729a and the second stem portion 729c. It has. The stem 729 integrally forms a first stem portion 729a, a second stem portion 729c, and an intermediate stem portion 729b. The stem 729 is configured to have substantially the same shape as the stem used in the incandescent bulb. The first stem portion 729a has a columnar shape and includes a mounting member 721 on which the light emitting device 10 is mounted. The mounting member 721 has a disk shape, and the diameter of the mounting member 721 is configured to be larger than the diameter of the main body portion of the first stem portion 729a.

  The second stem portion 729c has a cylindrical shape and is fixed to the support member 722c. The stem 729 is supported and fixed to the support member 722c. Note that the second stem portion 729c has a diameter of the second stem portion 729c larger than that of the first stem portion 729a. The intermediate stem portion 729b has a truncated cone shape in which the diameter on the first stem portion 729a side is smaller than the diameter on the second stem portion 729c side. The intermediate stem portion 729b includes two through holes for inserting the power supply line 725c. The power supply line 725c is provided so as to pass through the through hole of the intermediate stem portion 729b, and is electrically connected to the lighting circuit portion 724 through the intermediate stem portion 729b and the second stem portion 729c. The power supply line 725c is configured to contact the intermediate stem portion 729b and the second stem portion 729c. The lighting device 700 can conduct heat of the power supply line 725 c to the stem 729.

  Further, the intermediate stem portion 729b has an inclined surface constituted by a truncated cone-shaped side surface. The inclined surface of the intermediate stem portion 729b reflects light emitted from the light emitting device 10 toward the base 726 side. The illumination device 700 reflects light emitted from the other surface 701ab side of the multilayer substrate 701 through the multilayer substrate 701 by the inclined surface of the intermediate stem portion 729b. The illumination device 700 can adjust the light distribution of the reflected light reflected by the inclined surface by appropriately changing the inclination angle of the inclined surface of the intermediate stem portion 729b. Note that the lighting device 700 may white coat the inclined surface of the intermediate stem portion 729b. Further, the lighting device 700 is not limited to a white coating on the inclined surface of the intermediate stem portion 729b, and may include a reflective surface that is mirror-finished by a surface polishing process or the like. The lighting device 700 may function as a reflecting surface that performs desired light distribution control in the same manner as the stem 729 by providing an inclination on the surface of the support member 722c on the stem 729 side or performing a surface polishing finish. Good.

  In the lighting device 700, the multilayer substrate 701 and the mounting member 721 of the first stem portion 729a are fixed to each other by an adhesive (not shown) applied to the other surface 701ab of the multilayer substrate 701. For example, an adhesive made of a silicone resin is used as the adhesive. The lighting device 700 preferably uses an adhesive having a high thermal conductivity in order for the adhesive to efficiently conduct heat generated when the light emitting device 10 emits light to the stem 729. For example, an adhesive whose thermal conductivity is increased by dispersing metal fine particles in a silicone resin is used. Note that the lighting device 700 is not necessarily required to fix the multilayer substrate 701 and the mounting member 721 of the first stem portion 729a with an adhesive. It is only necessary that the multilayer substrate 701 and the mounting member 721 of the first stem portion 729a can be fixed. For example, an adhesive sheet in which an adhesive is applied on both sides may be used. The lighting device 700 may have a configuration in which an adhesive sheet is disposed between the mounting member 21 of the first stem portion 729a and the other surface 701ab of the multilayer substrate 701. For example, an adhesive sheet may be used in which a thermally conductive filler such as alumina, silica or titanium oxide is filled in an epoxy resin and formed into a semi-cured sheet.

  The support member 722 c is a member that is connected to the opening end 723 c of the opening 723 aa of the globe 723 and supports the stem 729. The support member 722c is configured to close the opening 723aa of the globe 723. The support member 722c is fitted and fixed to the case 722. The support member 722c is made of, for example, an inorganic material such as a metal material or ceramic, and is made of the same material as the stem 729.

  The support member 722c is a circular plate-like member, and includes a first support portion 722c1 and a second support portion 722c2. In the support member 722c, the diameter of the second support part 722c2 is larger than the diameter of the first support part 722c1. The lighting device 700 includes a step portion 722c3 between the peripheral edge portion of the first support portion 722c1 and the peripheral edge portion of the second support portion 722c2 (see FIG. 25). In addition, the 1st support part 722c1 and the 2nd support part 722c2 are the structures formed integrally. The first support portion 722c1 fixes the second stem portion 729c of the stem 729. The second support portion 722c2 has the inner surface of the case 722 in contact with the side surface of the second support portion 722c2. The step portion 722c3 contacts the opening end 723c of the opening 723aa of the globe 723. In the lighting device 700, the opening 723aa of the globe 723 is blocked by the second support portion 722c2. In the lighting device 700, the supporting member 722c, the case 722, and the opening end 723c of the opening 723aa of the globe 723 are fixed to each other at the step portion 722c3 with an adhesive 723b. The adhesive 723b is provided so as to fill the stepped portion 722c3. The adhesive 723b for fixing the globe 723 or the like is, for example, an adhesive made of silicone resin. In order to increase the thermal conductivity of the adhesive 723b, for example, metal fine particles may be dispersed in a silicone resin.

  The case 722 is an insulating case that electrically insulates the stem 729 and the base 726 and accommodates the lighting circuit portion 724. The case 722 includes a cylindrical first case portion 722d and a cylindrical second case portion 722e. In the first case portion 722d, the inner diameter of the first case portion 722d is slightly larger than the outer diameter of the second support portion 722c2 of the support member 722c. The first case portion 722d is fixed by fitting the support member 722c. The second case portion 722e is configured so that the outer peripheral surface of the second case portion 722e is in contact with the inner peripheral surface of the base 726. The second case portion 722e includes a screw portion 725a1a in which the outer peripheral surface of the second case portion 722e is screwed with the base 726. The second case portion 722e is in contact with the base 726 by the screw portion 725a1a of the second case portion 722e.

  The case 722 is formed by integrally injection-molding the first case portion 722d and the second case portion 722e. The case 722 is made of, for example, polybutylene terephthalate (PBT) containing glass fiber. The power supply line 725c holds the light emitting device 10 at a certain position in the globe 723 and supplies the power supplied from the base 726 to the light emitting element. One end of each power supply line 725c is electrically connected to the external connection terminals 4e and 4f (see FIG. 24) of the light emitting device 10 by soldering or the like. Further, the power supply line 725 c is electrically connected to the lighting circuit portion 724 at the other end of each power supply line 725 c. The power supply line 725c is made of, for example, a metal wire containing copper (Cu) having a high thermal conductivity.

The lighting circuit unit 724 is a circuit for lighting each light emitting element, and is suitably stored in the case 722. The lighting circuit unit 724 includes a plurality of electronic components 728 and a circuit board 727 on which each electronic component 728 is mounted. The lighting circuit unit 724 converts AC power received from the base 726 into DC power, and supplies DC power to the light emitting element via the feeder line 725c.
The lighting circuit portion 724 is electrically connected to the base 726. In the lighting circuit portion 724, one input terminal of the lighting circuit portion 724 is connected to the shell 726 a 1 on the side surface of the base 726. In the lighting circuit portion 724, the other input terminal of the lighting circuit portion 724 is connected to the eyelet 726 a 2 at the bottom of the base 726.

(lighting equipment)
The lighting fixture which concerns on this invention is not limited to the lighting fixture 1 which concerns on the said embodiment. What is necessary is just the lighting fixture using the light-emitting device which concerns on the said embodiment and modification. For example, in the above-described embodiment, the light emitting device is incorporated in the lighting fixture as a part of the lighting device. However, the light emitting device is not a part of the lighting device but is used as a single unit without the lighting device. It may be incorporated directly into the instrument. Moreover, the lighting fixture which concerns on this invention may use the illuminating device which concerns on embodiment mentioned above and a modification.

  As mentioned above, although the structure of this invention was demonstrated based on the said embodiment and modification, this invention is not restricted to the said embodiment and its modification. For example, the structure which combined suitably the partial structure of the said embodiment and its modification may be sufficient. In addition, the materials, numerical values, and the like described in the above embodiments are merely preferable examples and are not limited thereto. Furthermore, it is possible to appropriately change the configuration without departing from the scope of the technical idea of the present invention. The present invention can be widely used in general lighting applications.

<3. Supplement>
Hereinafter, a light emitting device, a lighting device, a lighting fixture, and modifications and effects thereof as one embodiment of the present invention will be described.
(A) A light-emitting device, a lighting device, and a lighting fixture according to an embodiment of the present invention include a first light-emitting element and a second light-emitting element having a light emission peak longer than a light emission peak wavelength of the first light-emitting element. When,
A substrate on which a wiring pattern is formed; and a plurality of bonding wires that connect the first light emitting element and the second light emitting element to the wiring pattern, wherein the first light emitting element and the second light emitting element include: A bonding wire which is mounted on the main surface and is formed in a region between the first light emitting element and the second light emitting element and connected to the first light emitting element. And two or more bonding wires connected to the second light-emitting element are connected to the wiring pattern in the region.

In the light emitting device, the lighting device, and the lighting fixture having this configuration, the bonding wires are concentrated on a region between adjacent light emitting elements of different emission colors, that is, a side where a part of the emitted light is absorbed by one light emitting element. be able to.
Therefore, since the ratio of the light emitted to the side where there is no light emitting element that absorbs the emitted light is absorbed by the bonding wire is decreased, it is possible to suppress the decrease in the light emission efficiency as compared with the related art.

(B) Here, two or more bonding wires of the bonding wires connected to the first light emitting element may be connected to the wiring pattern in the region.
In the light emitting device, the lighting device, and the lighting fixture having this configuration, the bonding wires of the light emitting element having the shorter light emission peak wavelength can be concentrated on the side of the adjacent light emitting element having the longer light emission peak wavelength.

Therefore, since the ratio of the light emitted to the side where there is no light emitting element that absorbs the emitted light is absorbed by the bonding wire is decreased, it is possible to suppress the decrease in the light emission efficiency as compared with the related art.
(C) Here, there are a plurality of the first light emitting elements and the second light emitting elements, respectively, a first row in which the plurality of first light emitting elements are linearly arranged, and the plurality of second light emitting elements. Are arranged on the main surface adjacent to each other with a space therebetween, and bonding wires connected to each of the first light emitting elements and the second light emitting elements Of the bonding wires connected to each other, 50% or more of the bonding wires are connected to the wiring pattern in a region between the first light emitting element and the second light emitting element adjacent to each other. Good.

In the light-emitting device, the lighting device, and the lighting fixture having this configuration, more than half of all the bonding wires connected to each light-emitting element are connected to a region between adjacent light-emitting elements having different emission colors, that is, emission. A part of the emitted light can be concentrated on the side absorbed by one of the light emitting elements.
Therefore, since the ratio of the light emitted to the side where there is no light emitting element that absorbs the emitted light is absorbed by the bonding wire is decreased, it is possible to suppress the decrease in the light emission efficiency as compared with the related art.

  (D) Here, there are a plurality of the first light-emitting elements and the second light-emitting elements, respectively, and the plurality of first light-emitting elements and the plurality of second light-emitting elements are staggered on the main surface at intervals. 1st light emission which is arrange | positioned and among the bonding wires connected to each said 1st light emitting element and the bonding wires connected to each said 2nd light emitting element, 50% or more of bonding wires adjoin each other. It may be connected to the wiring pattern in a region between the element and the second light emitting element.

The light emitting device, the lighting device, and the lighting fixture having this configuration are configured by alternately arranging light emitting elements of different light emission colors, and among the bonding wires connected to each light emitting element, more than half of the bonding wires are adjacent to each other. A region between the light emitting elements of the emission color, that is, a part of the emitted light can be concentrated on the side absorbed by one light emitting element.
Therefore, since the ratio of the light emitted to the side where there is no light emitting element that absorbs the emitted light is absorbed by the bonding wire is decreased, it is possible to suppress the decrease in the light emission efficiency as compared with the related art. In addition, since the light emitting elements having different light emission colors are alternately arranged, the light emitted from each light emitting element is easily mixed uniformly, and color unevenness can be reduced.

  (E) Here, each of the first light emitting elements is connected to one or more bonding wires, and in each of the first light emitting elements, one of the bonding wires connected to the first light emitting element. The above bonding wires may be connected to the wiring pattern in a region between the second light emitting element adjacent to the first light emitting element and the second light emitting element having the shortest distance.

In the light emitting device, the lighting device, and the lighting fixture having this configuration, when the first light emitting element has a plurality of adjacent second light emitting elements, a bonding wire is disposed in a region between the nearest second light emitting element. Can do.
Therefore, since the bonding wire of the first light emitting element can be disposed in the region where the light emitted from the first light emitting element is most likely to be absorbed, it is possible to suppress a decrease in light emission efficiency.

  (F) Here, each of the second light emitting elements is connected to one or more of the bonding wires, and in each of the second light emitting elements, of the bonding wires connected to the second light emitting element. One or more bonding wires may be connected to the wiring pattern in a region between the first light emitting element adjacent to the second light emitting element and the first light emitting element having the shortest distance.

In the light emitting device, the lighting device, and the lighting fixture having this configuration, when there are a plurality of adjacent first light emitting elements, the second light emitting element has a bonding wire disposed in a region between the nearest first light emitting element. Can do.
Therefore, since the bonding wire of the second light emitting element can be disposed in the region where the light emitted from the first light emitting element is most likely to be absorbed, it is possible to suppress a decrease in light emission efficiency.

(G) Here, the first light emitting element may be a light emitting element that emits blue light.
Therefore, the light-emitting device, the lighting device, and the lighting fixture having this configuration can use a blue light-emitting element having a short wavelength as the first light-emitting element, so that white light can be obtained in combination with an appropriate phosphor.

(H) Here, the emission peak wavelength of the light emitting element that emits blue light may be in a range of 450 [nm] to 470 [nm].
Therefore, the light-emitting device, the lighting device, and the lighting fixture having this configuration can use a blue light-emitting element having an emission peak wavelength of 450 [nm] to 470 [nm], and therefore, combined with an appropriate phosphor. White light can be obtained.

(I) Here, the second light emitting element may be a light emitting element that emits red light.
Therefore, in the light emitting device, the lighting device, and the lighting fixture having this configuration, a red light emitting element having a long wavelength can be used as the second light emitting element in order to improve color rendering.
(J) Here, the emission peak wavelength of the light emitting element that emits red light may be in a range of 600 [nm] to 650 [nm].

  Therefore, the light emitting device, the lighting device, and the lighting fixture having this configuration can improve the color rendering because a red light emitting element having a light emission peak wavelength of 600 [nm] to 650 [nm] can be used.

  INDUSTRIAL APPLICATION This invention can be utilized as a technique which can suppress the fall of luminous efficiency in the light-emitting device, the illuminating device, and the lighting fixture provided with the several light emitting element from which luminescent color differs.

DESCRIPTION OF SYMBOLS 1 Lighting fixture 3 Appliance 6 Lighting apparatus 10,110,210,310,410,510,610,710 Light-emitting device 11,111 Board | substrate 12,13,112,113,812,814 Light-emitting element 15a-15d Terminal part 16a-16q 116a to 116g, 216a to 216i, 316a to 316q, 416a to 416h, 516a to 516k, 616a to 616l, 716a to 716q, 816a to 816d wiring 17a to 17c, 117a to 117c, 817a to 817c, wire 18, 18a to 18h , 815 Sealing member 600, 700, 800 Illumination device 813 Wavelength conversion member

Claims (12)

A first light emitting element;
A second light emitting element having an emission peak on the longer wavelength side than the emission peak wavelength of the first light emitting element;
A substrate on which a wiring pattern is formed;
A plurality of bonding wires connecting the first light emitting element and the second light emitting element to the wiring pattern;
The first light emitting element and the second light emitting element are mounted on the main surface,
A part of the wiring pattern is formed in a region between the first light emitting element and the second light emitting element,
Of the bonding wires connected to the first light emitting element and the bonding wires connected to the second light emitting element, two or more bonding wires are connected to the wiring pattern in the region. Light-emitting device. 2. The light-emitting device according to claim 1, wherein two or more bonding wires among the bonding wires connected to the first light-emitting element are connected to the wiring pattern in the region. There are a plurality of the first light emitting elements and the second light emitting elements,
A first row in which the plurality of first light emitting elements are linearly arranged and a second row in which the plurality of second light emitting elements are linearly arranged are adjacent to each other with a space therebetween. Mounted on the main surface,
Of the bonding wires connected to each of the first light emitting elements and the bonding wires connected to the second light emitting elements, 50% or more of the bonding wires are adjacent to each other. The light emitting device according to claim 1, wherein the light emitting device is connected to the wiring pattern in a region between the light emitting elements. There are a plurality of the first light emitting elements and the second light emitting elements,
The plurality of first light emitting elements and the plurality of second light emitting elements are arranged in a staggered manner on the main surface with a space between each other,
Of the bonding wires connected to each of the first light emitting elements and the bonding wires connected to the second light emitting elements, 50% or more of the bonding wires are adjacent to each other. The light emitting device according to claim 1, wherein the light emitting device is connected to the wiring pattern in a region between the element. Each of the first light emitting elements is connected to one or more bonding wires,
In each of the first light emitting elements, one or more bonding wires of the bonding wires connected to the first light emitting element have the shortest distance among the second light emitting elements adjacent to the first light emitting element. The light emitting device according to claim 3, wherein the light emitting device is connected to the wiring pattern in a region between the second light emitting element. Each of the second light emitting elements is connected to one or more bonding wires,
In each of the second light emitting elements, one or more bonding wires of the bonding wires connected to the second light emitting element have the shortest distance among the first light emitting elements adjacent to the second light emitting element. The light emitting device according to claim 3 or 4, wherein the light emitting device is connected to the wiring pattern in a region between the first light emitting element and the first light emitting element. The light emitting device according to claim 1, wherein the first light emitting element is a light emitting element that emits blue light. The light emitting device according to claim 7, wherein an emission peak wavelength of the light emitting element that emits the blue light is in a range of 450 [nm] to 470 [nm]. The light emitting device according to claim 1, wherein the second light emitting element is a light emitting element that emits red light. The light emitting device according to claim 9, wherein an emission peak wavelength of the light emitting element that emits the red light is in a range of 600 [nm] to 650 [nm].   An illuminating device comprising the light emitting device according to any one of claims 1 to 10.   The lighting fixture provided with the light-emitting device of any one of Claim 1 thru | or 10.

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