JP2019046789A - Light-emitting device - Google Patents

Abstract

To provide a light-emitting device capable of securing brightness on a device outer peripheral part equivalent to that on a device center part, to make brightness on a device substantially uniform over the whole area of the device.SOLUTION: A light-emitting device comprises: a substrate; a plurality of light sources arranged on an upper surface of the substrate; and a reflector having a plurality of enclosure parts respectively enclosing the plurality of light sources in a plan view, wherein each of the plurality of enclosure parts has an inclination side surface widening upward. An interval between adjacent light sources is made uniform in the plan view. The plurality of enclosure parts has: a plurality of first enclosure parts whose opening regulated at an upper end of the inclination side surface is formed into a roughly rectangular shape; and a plurality of second enclosure parts enclosing the plurality of first enclosure parts, and whose opening area regulated at the upper end of the inclination side surface is smaller than that of the first enclosure part.SELECTED DRAWING: Figure 1A

Description

  The present invention relates to a light emitting device.

  A light emitting device provided with a plurality of light sources has been proposed (see Patent Document 1).

WO 2012/023459

  In the conventional light emitting device, the brightness on the outer periphery of the device may be lower than the brightness on the central portion of the device. While the light emitted from other parts of the device can easily reach the central portion of the device, the light emitted from other portions of the device can not easily reach the outer peripheral portion of the device.

  The above problems can be solved, for example, by the following means.

  A substrate, a plurality of light sources disposed on the upper surface of the substrate, and a plurality of surrounding portions respectively surrounding each of the plurality of light sources in plan view, each of the plurality of surrounding portions being directed upward A reflector having an expanding side surface, and an interval at which the plurality of light sources are adjacent is uniform in plan view, and the plurality of surrounding portions have a substantially rectangular opening defined by the upper end of the side surface A light emitting device comprising: a plurality of first enclosures; and a plurality of second enclosures surrounding the plurality of first enclosures and having an opening area defined by the upper ends of the inclined side surfaces smaller than the first enclosures.

  According to the light emitting device described above, the light density on the enclosure at the device outer peripheral portion is higher than the light density on the enclosure at the device central portion. Therefore, it is possible to ensure the brightness on the outer periphery of the device equal to that on the central portion of the device, and to make the brightness on the device closer to uniform over the entire region of the device.

FIG. 1 is a schematic plan view of a light emitting device according to Embodiment 1. It is the figure which displayed the several 1st encircling part by the gray colored part in FIG. 1A. It is the figure which displayed the some 2nd encircling part by the gray coloring part in FIG. 1A. It is 1D-1D sectional drawing in FIG. 1A. It is the elements on larger scale of FIG. 1D. It is the elements on larger scale of FIG. 1E. 5 is a schematic cross-sectional view showing another example of the light source according to Embodiment 1. FIG. 5 is a schematic cross-sectional view showing another example of the light source according to Embodiment 1. FIG. 5 is a schematic cross-sectional view showing another example of the reflector according to Embodiment 1. FIG. It is the figure which displayed the opening of the insulation member in the 1st encircling part and the 2nd encircling part with the gray colored part, respectively in the elements on larger scale of Drawing 1A. 5 is a schematic cross-sectional view showing another example of the reflector according to Embodiment 1. FIG. FIG. 7 is a schematic plan view of the light emitting device according to the second embodiment. It is the figure which displayed the several 1st encircling part in FIG. 5A by the gray coloring part. It is the figure which displayed the several 2nd encircling part by the gray coloring part in FIG. 5A. It is the figure which displayed the several 3rd encircling part by the gray coloring part in FIG. 5A. It is 5E-5E sectional drawing in FIG. 5A.

[Light Emitting Device 1 According to Embodiment 1]
FIG. 1A is a schematic plan view of a light emitting device according to Embodiment 1. FIG. FIG. 1B is a view showing the plurality of first surrounding portions 32 in gray colored portions in FIG. 1A so that the positions of the plurality of first surrounding portions 32 can be easily understood. FIG. 1C is a view in which the plurality of second surrounding portions 34 are indicated by gray colored portions in FIG. 1A so that the positions of the plurality of second surrounding portions 34 can be easily understood. In FIGS. 1A, 1B, and 1C, only the base 10, the light emitting element 22, and the reflector 30 are illustrated, and the optical member 40 and the like are omitted so that the shape of the reflector 30 can be easily understood. 1D is a cross-sectional view taken along line 1D-1D in FIG. 1A, and FIG. 1E is a partially enlarged view of FIG. 1D. FIG. 1F is a partially enlarged view of FIG. 1E.

  As shown in FIGS. 1A to 1F, the light emitting device 1 according to the first embodiment includes a base 10, a plurality of light sources 20 disposed on the upper surface of the base 10, and a plurality of light sources 20 in plan view. And a reflector 30 having a plurality of surrounding portions, each of the plurality of surrounding portions having an inclined side face X extending upward, the plurality of surrounding portions including a plurality of first surrounding portions 32; The light emitting device has a plurality of second surrounding portions 34 surrounding the first surrounding portion 32 and having a smaller opening area defined by the upper end of the inclined side surface X than the first surrounding portion 32. The details will be described below.

(Light-emitting device 1)
The light emitting device 1 is, for example, a direct backlight device.

(Substrate 10)
The base 10 is a member for mounting the light source 20.

Examples of the material of the substrate 10 include resins such as ceramics, phenol resin, epoxy resin, polyimide resin, BT resin, polyphthalamide (PPA), polyethylene terephthalate (PET) and the like. Examples of the ceramic include alumina, mullite, forsterite, glass ceramics, nitrides (eg, AlN), carbides (eg, SiC), LTCC and the like. When a resin is used as the material of the base 10, glass fiber or an inorganic filler such as SiO ₂ , TiO ₂ , Al ₂ O ₃ or the like is mixed with the resin to improve mechanical strength, reduce thermal expansion coefficient, light reflectance Can be improved. For the base 10, a metal substrate in which an insulating layer is formed on the surface of a metal member may be used.

  The thickness of the substrate 10 can be selected as appropriate. The substrate 10 may be, for example, a flexible substrate that can be manufactured by a roll-to-roll method, or may be a rigid substrate. The rigid substrate may be a bendable thin rigid substrate.

(Multiple light sources 20)
The plurality of light sources 20 are disposed on the top surface of the substrate 10.

  The pitches of the plurality of light sources 20, that is, the intervals P at which the plurality of light sources 20 are adjacent, are uniform in the longitudinal direction and the lateral direction in plan view (including the case where there is an error to be considered uniform). preferable. In this way, for example, the opening of the second surrounding portion 34 can be obtained simply by changing the sizes of the first surrounding portion 32 and the second surrounding portion 34 in the reflector 30 without changing the arrangement of the light source 20 or the like. By setting the area S2 to be smaller than the opening area S1 of the first surrounding portion 32, the brightness on the outer periphery of the device can be secured equivalent to that on the central portion of the device, and the design of the light emitting device 1 becomes easy.

Each light source 20 may have a light emitting element 22 such as a light emitting diode. The light emitting element 22 includes, for example, a light transmitting substrate and a semiconductor layer stacked on the substrate. For example, sapphire can be used for the light-transmitting substrate. The semiconductor layer has, for example, an n-type semiconductor layer, an active layer, and a p-type semiconductor layer in this order from the substrate side. The semiconductor layer is, for example, ZnSe, nitride semiconductor _{(In x Al y Ga 1-} x-y N, 0 ≦ X, 0 ≦ Y, X + Y ≦ 1), or other such GaP, GaAlAs, AlInGaP or the like It can be used. For example, an n-side electrode is formed on the n-type semiconductor layer, and a p-side electrode is formed on the p-type semiconductor layer.

  Each light source 20 may have a sealing member 26. The sealing member 26 is a member that protects the light emitting element 22 from the external environment and optically controls the light output from the light emitting element 22. The sealing member 26 is disposed on the base 10 so as to cover the light emitting element 22.

  As a material of the sealing member 26, an epoxy resin, a silicone resin, a resin obtained by mixing them, or a translucent material such as glass can be used. Among these, it is preferable to select a silicone resin in consideration of light resistance and ease of molding. The sealing member 26 may be a light diffusing material, a wavelength conversion member such as a phosphor that absorbs light from the light emitting element 22 and emits light of a wavelength different from that of the output light from the light emitting element 22. A colorant corresponding to the luminescent color can be included.

  The sealing member 26 can be formed, for example, by dropping or drawing in addition to compression molding or injection molding. In addition, by optimizing the viscosity of the material of the sealing member 26, it is also possible to control the shape by the surface tension of the material itself. In the case of dropping or drawing, the sealing member 26 can be formed more easily without requiring a mold. The viscosity may be adjusted by using a material having a desired viscosity as the material of the sealing member 26, or may be adjusted using the light diffusing material, the wavelength conversion member, or the coloring agent described above.

  Each light source 20 preferably has a batwing type light distribution characteristic. In this way, it is possible to suppress the amount of light emitted in the direction immediately above each light source 20, and to spread the light distribution of each light source 20. Therefore, particularly in the case where the translucent optical member 40 is provided to face the substrate 10, the thickness of the light emitting device 1 can be reduced. Therefore, it is possible to provide a thin light-emitting device with a small thickness while ensuring the same luminance on the device outer peripheral portion as on the central portion of the device.

  The bat wing type light distribution characteristic means a light distribution characteristic in which the central part is darker than the outer peripheral part. As an example of the bat wing type light distribution characteristic, when the optical axis L is 0 °, a light distribution having a light emission intensity distribution in which the light emission intensity becomes stronger at an angle where the absolute value of the light distribution angle is larger than 0 °. A light distribution characteristic having a light emission intensity distribution in which the light emission intensity is strongest at around 45 ° to 90 ° may be mentioned.

  Each light source 20 may have a reflective film 28 on the top surface of the light emitting element 22. In this case, the sealing member 26 can be provided to cover, for example, the light emitting element 22 and the reflective layer 28. By providing the sealing member 26 in this manner, it is possible to easily realize the bat wing-type light distribution characteristics by forming the sealing member 26 into a shape such as the shape shown in FIG. 2A described later, for example. .

  FIG. 2A is a schematic cross-sectional view showing another example of the light source according to Embodiment 1. FIG. The shape of the sealing member 26 may be, for example, a dome shape, but as shown in FIG. 2A, a shape for widening the light distribution of the light from the light emitting element 22, specifically, a concave portion directly above the light emitting element It may have a shape. In this way, the sealing member 26 functions as a lens for widening the light distribution, and it is possible to obtain batwing-type light distribution characteristics without providing the above-described reflective layer 28. Alternatively, by providing the sealing member 26 that functions as a lens while providing the reflective film 28, it is possible to more easily obtain batwing-type light distribution characteristics.

  FIG. 2B is a schematic cross-sectional view showing another example of the light source according to Embodiment 1. As shown in FIG. 2B, each light source 20 may have a reflective layer 28 above the sealing member 26. In this way, the light in the upper direction of the light emitting element 22 is reflected by the reflective layer 28, and the light quantity immediately above the light emitting element 22 is suppressed. Therefore, it is possible to easily realize batwing type light distribution characteristics.

  The reflective layer 28 may be a metal film or a dielectric multilayer film.

  It is preferable that the plurality of light sources 20 can be driven independently of each other, and in particular, it is preferable that dimming control (for example, local dimming or high dynamic range: HDR) for each light source 20 is possible.

(Reflector 30)
The reflector 30 is a member that reflects the light emitted from the light source 20. The reflector 30 preferably has a reflectance of 70% or more on average in a region of 440 nm to 630 nm with respect to the light emitted from the light source 20. In the reflector 30, for example, a member formed using a resin containing a reflective material made of metal oxide particles such as titanium oxide, aluminum oxide, silicon oxide or the like, or a reflective material on the surface of a resin not containing a reflective material A member provided can be used.

  The reflector 30 has a plurality of envelopes that respectively surround each of the plurality of light sources 20 in a plan view. One enclosure surrounds one light source. The plurality of enclosures have a plurality of first enclosures 32 and a plurality of second enclosures 34 surrounding the plurality of first enclosures 32. The opening area S2 of the second surrounding portion 34 is smaller than the opening area S1 of the first surrounding portion 32. As a result, the light density on the second enclosure 34 is higher than the light density on the first enclosure 32, and the light density on the outer periphery of the device is higher than the light density on the central region of the device. The opening area is an area defined by the upper end of the inclined side surface X. The light density is the degree of light intensity per unit area.

  The opening defined by the upper end of the inclined side surface of the reflector is substantially rectangular. In the plurality of encircling parts, since the openings are substantially rectangular, the luminance on the device can be made uniform and uniform throughout the device.

  The thickness T of the reflector 30 is, for example, 100 to 300 μm. The reflector 30 has an inclined side surface X which spreads upward in each of the plurality of encircling parts. Here, the reflector 30 preferably further includes a flat portion extending from the lower end of the inclined side surface X toward the light source 20 in each of the plurality of encircling portions. In FIG. 1E, the inclination angle of the inclined side surface X of the second surrounding portion 34 is larger than the inclination angle of the inclined side surface X of the first surrounding portion 32.

  For example, as shown in FIG. 4B, the distance D2 from the light source side end of the flat surface of the second enclosure 34 to the light source end is the distance from the light source side edge of the flat surface of the first enclosure 32 to the light source end It is preferable that the distance be smaller than the distance D1. In this way, the light density on the second enclosure 34 can be made higher than the light density on the first enclosure 32 to allow the light density on the enclosure at the device periphery to It can be higher than the light density on the part.

  FIG. 3 is a schematic cross-sectional view showing another example of the reflector according to the first embodiment. As shown in FIG. 3, the height H2 from the upper surface of the base 10 to the upper end of the inclined side X of the second surrounding portion 34 is the height from the upper surface of the base 10 to the upper end of the inclined side X of the first surrounding 32. It is preferably higher than H1. In this way, since the multiple reflection amount of light in the second surrounding portion 34 is increased, the light density on the second surrounding portion 34 can be further increased, and the luminance on the device outer peripheral portion can be further enhanced. .

(Optical member 40)
The optical member 40 is disposed to face the base 10 with the plurality of light sources 20 interposed therebetween. It is preferable that the distance K2 from the upper end of the inclined side surface X to the optical member 40 is 1/2 or less of the distance K1 from the upper surface of the base 10 to the upper end of the inclined side surface X. In this way, the depth of the first surrounding portion 32 and the second surrounding portion 34 becomes relatively deep with respect to the distance from the reflector 30 to the optical member 40, and the first surrounding portion 32 and the second surrounding portion The number of repetitions of multiple reflections of light in 34 can be increased. Therefore, the light density of each surrounding part in the position where the optical member 40 is arrange | positioned can be raised.

  For the optical member 40, for example, a translucent member such as a half mirror can be used. For the half mirror, for example, a member that reflects a part of incident light and transmits a part can be used.

  The reflectance of the half mirror is preferably set to be lower at oblique incidence than at normal incidence. That is, the half mirror has a high light reflectance for the light emitted parallel to the optical axis direction among the light emitted from each light source 20, and the radiation angle (parallel to the optical axis direction) is high. In some cases, it has a characteristic that the light reflectance decreases (in other words, the characteristic that the amount of light transmitted through the half mirror increases) as the radiation angle is 0 degree). preferable. In this way, when the half mirror is observed from the light emission side, it is possible to easily obtain a uniform luminance distribution.

  For example, a dielectric multilayer film can be used for the half mirror. By using the dielectric multilayer film, it is possible to obtain a reflective film with less light absorption. In addition, the design of the film allows the reflectivity to be adjusted arbitrarily, and the angle to control the reflectivity. For example, if the film of the dielectric multilayer is designed such that the reflectance for light incident obliquely to the half mirror is lower than that to light incident perpendicularly to the half mirror, the film is perpendicular to the light extraction surface It is possible to easily realize the characteristic that the reflectance to light incident on the light is high, and the reflectance decreases as the angle to the light extraction surface increases.

  The light emitting device 1 may include a light diffusion plate on the light emission side of the optical member 40. The light diffusion plate is a member that reduces unevenness in brightness by diffusing the light emitted from the plurality of light sources 20. As a material for forming the light diffusion plate, for example, a material such as polycarbonate resin, polystyrene resin, acrylic resin, polyethylene resin, etc., which has less light absorption to visible light can be used. For the light diffusion plate, for example, a member in which materials having different refractive indices are contained in a material serving as a base material, or a member for processing the surface shape of the material serving as a base material to scatter light can be used.

(Conductive wire 50)
The conductor wiring 50 for supplying electric power to the light source 20 (light emitting element 22) can be arrange | positioned on the surface of the base | substrate 10. As shown in FIG. The conductor wiring 50 is a member that is electrically connected to the electrode of the light source 20 (light emitting element 22) and supplies a current (power) from the outside.

  The material of the conductor wiring 50 can be appropriately selected depending on the material used as the base 10, the manufacturing method, and the like. For example, when using ceramics as the material of the base 10, it is preferable to use a material having a high melting point that can withstand the sintering temperature of the ceramic sheet as the material of the conductor wiring 50, for example, a high melting point such as tungsten or molybdenum. It is preferable to use the following metals. Furthermore, the surface of these metals may be coated with another metal material such as nickel, gold, silver or the like by plating, sputtering, vapor deposition or the like, and used as the conductor wiring 50. When a glass epoxy resin is used as the material of the base 10, it is preferable to use a material that is easy to process as the material of the conductor wiring 50.

  The conductor wiring 50 can be formed on one surface or both surfaces of the base 10 by a method such as vapor deposition, sputtering, plating or the like. A metal foil may be attached by pressing to form the conductor wiring 50. The conductor wiring 50 can be patterned in a predetermined shape by masking using a printing method or photolithography and the like and an etching process.

(Joining member 60)
The light emitting device 1 may have a bonding member 60. The bonding member 60 is a member for fixing the light source 20 to the base 10 and / or the conductor wiring 50. Examples of the bonding member 60 include an insulating resin and a conductive member. When the light source 20 is flip-chip mounted, a conductive member can be used as the bonding member 60. Au containing alloy, Ag containing alloy, Pd containing alloy, In containing alloy, Pb-Pd containing alloy, Au-Ga containing alloy, Au-Sn containing alloy, Sn containing alloy, Sn-Cu containing alloy, Sn-Cu-Ag containing An alloy, an Au-Ge-containing alloy, an Au-Si-containing alloy, an Al-containing alloy, a Cu-In-containing alloy, a mixture of a metal and a flux, and the like are examples of the bonding member 60.

  As the bonding member 60, for example, liquid, paste, solid (sheet, block, powder, wire) members can be used singly or in combination, and the composition, the shape of the substrate 10, etc. Depending, it can choose appropriately. When the step of electrically connecting the light source 20 to the conductor wiring 50 and the step of mounting or fixing the light source 20 on the base 10 are divided into another step instead of one step, the bonding member A wire other than 60 may further be used to electrically connect the light source and the conductor wiring 50 with this.

(Insulating member 70)
On the base 10, an insulating member 70 such as a resist for insulatingly coating the conductor wiring 50 may be disposed. In the case where the insulating member 70 is disposed, not only for the purpose of insulating the conductor wiring 50, but by making the insulating member 70 contain a white-based filler, light is reflected or light leakage or absorption is prevented. The light extraction efficiency of the light emitting device 1 can also be increased. The material of the insulating member 70 is not particularly limited as long as it is insulating, but it is particularly preferable to be a material that absorbs less light from the light emitting element 22. Specifically, for example, epoxy, silicone, modified silicone, urethane resin, oxetane resin, acrylic, polycarbonate, polyimide or the like can be used as the material of the insulating member 70.

  The insulating member 70 is preferably provided so as to cover the surface of the base 10 and the portion of the conductor wiring 50 other than the portion electrically connected to the light emitting element 22 or the like. However, it is preferable that the arrangement region of the light emitting element 22 in the surface of the base 10 is not covered by the insulating member 70, and the area S4 of the opening of the insulating member 70 in the second surrounding portion 34 is shown in FIGS. 4A and 4B. Thus, it is more preferable to be smaller than the area S3 of the opening of the insulating member 70 in the first surrounding portion 32. By so doing, it becomes easier to secure the same luminance as on the central portion of the device, also on the outer peripheral portion of the device.

  As described above, according to the light emitting device 1 according to the first embodiment, the light density on the surrounding portion in the outer peripheral portion of the device is higher than the light density on the surrounding portion in the central portion of the device. Therefore, it is possible to ensure the brightness on the outer periphery of the device equal to that on the central portion of the device, and to make the brightness on the device closer to uniform over the entire region of the device.

[Light-emitting device 2 according to Embodiment 2]
5A is a schematic plan view of the light emitting device according to the second embodiment, and FIG. 5B gray-colors the plurality of first surrounding portions 32 in FIG. 5A so that the positions of the plurality of first surrounding portions 32 can be easily understood. FIG. FIG. 5C is a view in which the plurality of second surrounding portions 34 are indicated by gray colored portions in FIG. 5A so that the positions of the plurality of second surrounding portions 34 can be easily understood. FIG. 5D is a view in which the plurality of third surrounding portions 36 are indicated by gray colored portions in FIG. 5A so that the positions of the plurality of third surrounding portions 36 can be easily understood. FIG. 5E is a 5E-5E sectional view in FIG. 5A.

  As shown in FIGS. 5A to 5E, in the light emitting device 2 according to the second embodiment, the plurality of enclosures have a plurality of third enclosures 36 between the first enclosure 32 and the second enclosure 34. The opening area S3 defined by the upper end of the inclined side surface X in each third surrounding portion 36 is smaller than the opening area S1 of the first surrounding portion 32 and larger than the opening area S2 of the second surrounding portion 34. The point is different from the light emitting device 1 according to the first embodiment, and has the same configuration in other points. According to the light emitting device 2 of the second embodiment, the light density on the second enclosure 34> the light density on the third enclosure 36> the light density on the first enclosure 32 is satisfied. The light density on the device increases toward the outer periphery of the device. Therefore, it is possible to further ensure the brightness on the outer periphery of the device equivalent to that on the central portion of the device, and to make the brightness on the device closer to uniform over the entire region of the device.

  As mentioned above, although embodiment was described, the structure described in the claim by these description is not limited at all.

DESCRIPTION OF SYMBOLS 1 light-emitting device 10 base 20 light source 22 light-emitting element 26 sealing member 28 reflective layer 30 reflector 32 1st surrounding part 34 2nd surrounding part 36 3rd surrounding part 40 optical member 50 conductor wiring 60 joining member 70 insulation member D1, D2 enclosure The distance H1 from the light source side end of the flat part at the light source to the light source end H1, H2 The height K1 from the upper surface of the base to the upper end of the inclined side Distance P to the distance between adjacent light sources (pitch)
S1, S2, S3 Opening area of the surrounding portion S3, S4 Opening area of the insulating member T thickness of the reflector X inclined side surface

Claims (11)

A substrate,
A plurality of light sources disposed on the top surface of the substrate;
A reflector having a plurality of enclosures respectively surrounding each of the plurality of light sources in plan view, each of the plurality of enclosures having an inclined side surface extending upward,
The intervals at which the plurality of light sources are adjacent are uniform in plan view,
The plurality of enclosures have a substantially rectangular opening defined by the upper end of the inclined side, and surround the plurality of first enclosures and the plurality of first enclosures, and are defined by the upper end of the inclined side A light emitting device having a plurality of second enclosures having an opening area smaller than that of the first enclosure. The plurality of enclosures further include a plurality of third enclosures,
The third surrounding portion is provided between the first surrounding portion and the second surrounding portion, and the opening area is smaller than the first surrounding portion and larger than the second surrounding portion. The light-emitting device according to 1.   The light source according to claim 1, wherein the light source has a batwing type light distribution characteristic.   The light source according to any one of claims 1 to 3, wherein the light source includes a light emitting element, and a lens for widening light distribution of light from the light emitting element.   The light source according to any one of claims 1 to 4, wherein the light source includes a light emitting element, a sealing member covering the light emitting element, and a reflective layer provided above the sealing member. .   5. The light source according to claim 1, further comprising: a light emitting element; a reflective layer provided on an upper surface of the light emitting element; and a sealing member that covers the light emitting element and the reflective layer. The light emitting device as described. A translucent optical member disposed to face the substrate with the plurality of light sources interposed therebetween;
The light emitting device according to any one of claims 1 to 6, wherein a distance from an upper end of the inclined side surface to the optical member is 1/2 or less of a distance from an upper surface of the base to an upper end of the inclined side surface.   The light emitting device according to claim 7, wherein the optical member comprises a half mirror which is formed of a dielectric multilayer film, reflects a part of incident light, and transmits a part. The reflector has a flat portion extending from the lower end of the inclined side surface toward the light source,
The distance from the light source end of the flat portion of the second enclosure to the light source end is greater than the distance from the light source end of the flat portion of the first enclosure to the light source The light emitting device according to any one of claims 1 to 8, which is small.   The height from the upper surface of the base to the upper end of the inclined side of the second surrounding portion is higher than the height from the upper surface of the base to the upper end of the inclined side of the first surrounding portion. The light-emitting device as described in a term. The surface of the said base | substrate is equipped with the conductor wiring electrically connected with the said light source, The said conductor wiring is covered by the insulation member except the part electrically connected with the said light source. The light-emitting device according to claim 1.