Light-emitting device, light flux control member, and method for manufacturing light-emitting device

Abstract

The invention relates to a light-emitting device, a light flux control member, and a method for manufacturing the light-emitting device. This light-emitting device is provided with: a substrate; a substrate; a light source disposed on the substrate; a light beam control member including a flange and an adhesive accommodating portion penetrating through the flange, the light beam control member being disposed on the substrate so as to cover the light source; and an adhesive cured material filled in the adhesive accommodating portion and in contact with the substrate, the adhesive accommodating portion including, in a cross-section in the thickness direction of the flange, a plurality of through portions extending in the thickness direction of the flange, and a plurality of through portions extending in the thickness direction of the flange, the plurality of through portions extending in the thickness direction of the flange, and the plurality of through portions extending in the thickness direction of the flange. And a first connection recess extending on the upper surface of the flange so as to connect the plurality of penetration portions.

Description

Technical Field

[0001] The invention relates to a light emitting device, a light beam control component and a manufacturing method of the light emitting device. Background Art

[0002] A light-emitting device is known, which includes: a light source disposed on a substrate; and a light-transmitting component disposed in a manner to cover the light source. Here, the light-transmitting component may be a protective cover or a light beam control component (lens) for controlling light from the light source. For example, Patent Document 1 discloses an ultraviolet irradiation device, which includes: an ultraviolet light-emitting element; and a light-transmitting cover made of a silicone resin disposed in a manner to cover the ultraviolet light-emitting element.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2022-113485 Summary of the invention

[0006] Problem that the invention aims to solve

[0007] Figure 1A The following schematically shows a method of fixing the light-transmitting cover 30 to the substrate 210 on which the light source 220 is arranged in the irradiation device 10 described in Patent Document 1. Figure 1A As shown in Patent Document 1, the light-transmitting cover 30 is fixed to the substrate 210 by covering the flange 31 of the light-transmitting cover 30 with a cured product 33 of an adhesive material. This is because the adhesion between the component made of silicone resin and other resin materials is low, and therefore, the light-transmitting cover 30 cannot be fixed to the substrate 210 by simply applying an adhesive between the substrate 210 and the light-transmitting cover 30. However, if the light-transmitting cover 30 is fixed to the substrate 210 by covering the flange 31 with an adhesive as described above, the amount of adhesive required increases.

[0008] An object of the present invention is to provide a light emitting device that can prevent the amount of adhesive used from increasing when a light beam control component that is arranged so as to cover a light source arranged on a substrate is fixed to the substrate, even if the light beam control component contains silicone. Another object of the present invention is to provide a light beam control component for the light emitting device. Another object of the present invention is to provide a method for manufacturing the light emitting device.

[0009] Solutions to the problem

[0010] The present invention relates to the following light emitting device, light beam controlling component and method for manufacturing the light emitting device.

[0011] [1] A light emitting device comprising: a substrate; a light source arranged on the substrate; a light beam control component including a flange and an adhesive receiving portion penetrating the flange and arranged on the substrate in a manner covering the light source; and an adhesive cure material filled in the adhesive receiving portion and bonded to the substrate, wherein, in a cross section along the thickness direction of the flange, the adhesive receiving portion includes: a plurality of through portions extending along the thickness direction of the flange; and a first connecting recess extending on the upper surface of the flange in a manner connecting the plurality of through portions.

[0012] [2] The light emitting device as described in [1], wherein the adhesive receiving portion includes: a plurality of through holes extending in the thickness direction of the flange; and the first connecting recess extending on the upper surface of the flange in a manner connecting the plurality of through holes.

[0013] [3] The light emitting device according to [2], wherein the adhesive receiving portion further includes a second connection recess extending on the lower surface of the flange in a manner connecting the plurality of through holes.

[0014] [4] A light emitting device as described in any one of [1] to [3], wherein the shape of the opening portion of the first connection recess on the upper surface side of the flange of the adhesive receiving portion is approximately rectangular, approximately circular, approximately elliptical, or approximately trapezoidal.

[0015] [5] The light emitting device according to any one of [2] to [4], wherein all of the plurality of through holes open in the first connection recess.

[0016] [6] The light emitting device according to any one of [3] to [5], wherein all of the plurality of through holes are opened in the first connection recess and the second connection recess.

[0017] [7] The light emitting device as described in [5] or [6], wherein the first connection recess is arranged to surround the emission surface when the light beam controlling component is viewed from above.

[0018] [8] The light emitting device according to any one of [1] to [7], wherein, in the cross section, the plurality of penetration portions include a surface inclined with respect to a thickness direction of the flange.

[0019] [9] The light emitting device according to any one of [1] to [8], wherein the light flux controlling member includes silicone, and the adhesive is a non-silicone adhesive.

[0020]

[10] A light-emitting device as described in any one of [1] to [9], wherein the light beam control component also has a wire accommodating portion, which is arranged on the flange and is used to accommodate the end of the wire arranged on the substrate, and the light-emitting device also has an adhesive cure, which is used to seal the end of the wire accommodated in the wire accommodating portion.

[0021]

[11] The light emitting device according to

[10] , wherein the adhesive containing portion is connected to the wire containing portion.

[0022]

[12] A light beam control component, comprising: a flange; and an adhesive receiving portion that penetrates the flange, wherein in a cross-section along the thickness direction of the flange, the adhesive receiving portion includes: a plurality of penetration portions extending along the thickness direction of the flange; and a first connecting recess extending on the upper surface of the flange in a manner that connects the plurality of penetration portions.

[0023]

[13] A method for manufacturing a light-emitting device, which is the method for manufacturing a light-emitting device described in any one of [1] to

[11] , comprising the following steps: a step of preparing the light source to be arranged on the substrate; a step of arranging the light beam controlling component on the substrate in a manner covering the light source; and a step of filling the adhesive containing portion of the light beam controlling component with adhesive and curing the adhesive.

[0024] Effects of the Invention

[0025] According to the present invention, a light emitting device can be provided, which can prevent the amount of adhesive used from increasing when a light beam control component arranged in a manner to cover a light source arranged on a substrate is fixed to the substrate even if the light beam control component contains silicone. In addition, according to the present invention, a method for manufacturing the light emitting device can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1A The conventional method of fixing the beam control component to the substrate is shown. Figure 1B A method of fixing the light flux controlling member to the substrate according to the embodiment is shown.

[0027] Figure 2A is a stereoscopic diagram of the light beam control component of Embodiment 1, Figure 2B , Figure 2C This is a perspective view of a cured adhesive filled in an adhesive container of a light flux controlling member according to Embodiment 1. Figure 2D A cross section of a flange of the light emitting device according to Embodiment 1 is shown.

[0028] Figure 3A is a stereoscopic diagram of a light beam control component according to Embodiment 2. Figure 3B , Figure 3CThis is a perspective view of a cured adhesive filled in an adhesive container of a light flux controlling member according to the second embodiment.

[0029] Figure 4A is a stereoscopic diagram of a light beam control component according to Embodiment 3. Figure 4B , Figure 4C This is a perspective view of a cured adhesive filled in an adhesive container of a light flux controlling member according to the third embodiment.

[0030] Figure 5A is a stereoscopic diagram of a light beam control component according to Embodiment 4. Figure 5B , Figure 5C This is a perspective view of a cured adhesive filled in an adhesive container of a light flux controlling member according to a fourth embodiment.

[0031] Fig. 6A is a stereoscopic diagram of a light beam control component according to Embodiment 5. Figure 6B , Figure 6C This is a perspective view of a cured adhesive filled in an adhesive container of a light flux controlling member according to the fifth embodiment.

[0032] Fig. 7A is a stereoscopic diagram of a light beam control component according to Embodiment 6. Figure 7B , Figure 7C This is a perspective view of a cured adhesive filled in an adhesive containing portion of a light flux controlling member according to the sixth embodiment.

[0033] Fig. 8A is a stereoscopic diagram of a light beam control component according to Embodiment 7. Figure 8B This is a perspective view of a cured adhesive filled in an adhesive container of a light flux controlling member according to the seventh embodiment.

[0034] Fig.9A is a stereoscopic diagram of a light beam control component according to Embodiment 8. Fig. 9B This is a perspective view of a cured adhesive filled in an adhesive containing portion of a light flux controlling member according to the eighth embodiment.

[0035] Fig. 10A is a stereoscopic diagram of a light beam control component of Embodiment 9, Fig. 10B , Fig. 10C This is a perspective view of a cured adhesive filled in an adhesive containing portion of a light flux controlling member according to the ninth embodiment.

[0036] Fig.11A is a stereoscopic diagram of a light beam control component according to Embodiment 10, Fig. 11B , Fig. 11C This is a perspective view of a cured adhesive filled in an adhesive container of a light flux controlling member according to a tenth embodiment.

[0037] Fig. 12A is a stereoscopic diagram of a light beam control component according to embodiment 11. Fig. 12B , Fig. 12C This is a perspective view of a cured adhesive filled in an adhesive containing portion of a light flux controlling member according to the eleventh embodiment.

[0038] Fig.13A is a perspective view of a light beam control component of a reference example. Fig. 13B This is a perspective view of a cured adhesive filled in an adhesive container of a light flux controlling member of a reference example.

[0039] Fig.14A is a perspective view of a light beam control component of a reference example. Fig. 14B is a cross-sectional view of a light beam control component of a reference example. Fig. 14C This is a perspective view of a cured adhesive filled in an adhesive container of a light flux controlling member of a reference example.

[0040] Fig.15A This is a top view of a light emitting device having a light beam controlling component according to embodiment 12. Fig. 15B , Fig. 15C is along Fig.15A Cross-sectional diagram of line BB and line CC.

[0041] Fig.16A This is a top view of a light emitting device having a light beam controlling component according to embodiment 13. Fig. 16B , Fig. 16C is along Fig.16A Cross-sectional diagram of line BB and line CC.

[0042] Fig.17A This is a top view of a light emitting device having a light flux controlling component according to embodiment 14. Fig. 17B , Fig. 17C is along Fig.17A Cross-sectional diagram of line BB and line CC.

[0043] Fig.18A This is a top view of a light emitting device having a light beam controlling component according to embodiment 15. Fig.18B , Fig.18C is along Fig.18A Cross-sectional diagram of line BB and line CC.

[0044] Fig.19A This is a top view of a light emitting device having a light beam controlling component according to embodiment 16. Fig.19B , Fig.19C is along Fig.19A Cross-sectional diagram of line BB and line CC.

[0045] Fig. 20Ais a diagram showing a state in which the adhesive has become a cured adhesive in the light beam controlling component of Embodiment 13, Fig. 20B This is a diagram showing a state in which the adhesive in the light flux controlling member of the fourteenth embodiment has become an adhesive cured product.

[0046] Description of Reference Numerals

[0047] 30: light-transmitting cover;

[0048] 100: Light emitting device;

[0049] 210: substrate;

[0050] 211: Wire;

[0051] 211a: end of the wire;

[0052] 220: light source;

[0053] 300, 400, 500, 600, 700, 800, 900, 1000, 1100, 1200, 1300, 1400, 1500, 1600, 1700, 1800, 1900, 2000, 2100: beam control components;

[0054] 310, 410, 610, 710, 810: incident surface;

[0055] 320, 420: exit surface;

[0056] 31, 330, 430, 530, 630, 730, 830, 930, 1030, 1130, 1230, 1330, 1430, 1530, 1630, 1730, 1830, 1930, 2030, 2130: flange;

[0057] 340, 440, 540, 640, 740, 840, 940, 1040, 1140, 1240, 1340, 1440, 1540, 1640, 1740, 1940, 2040, 2140: adhesive receiving portion;

[0058] 441, 541, 641a, 641b, 741, 841, 941, 1041, 1141, 1541, 1741, 1941, 2041, 2141: through hole;

[0059] 442, 542, 642, 742, 842, 942, 1042, 1142, 1242, 1342, 1442, 1742, 1942, 2042, 2142: first connecting recess;

[0060] 450, 550, 650, 750, 850, 950, 1050, 1150, 1250, 1350, 1450, 1550, 1650, 1860, 1960: adhesive cured products;

[0061] 451, 551, 651a, 651b, 751, 851, 951, 1051, 1151, 1251a, 1351a, 1451a, 1551: penetrating solidification portion;

[0062] 452, 552, 652, 752, 852, 952, 1052, 1152, 1252, 1352, 1452: first connection and curing part;

[0063] 841a, 851a, 941a, 951a: inclined surface;

[0064] 1143: second connecting recess;

[0065] 1153: second connection and curing portion;

[0066] 1241b, 1341b: connecting through parts;

[0067] 1251b, 1351b: connecting and penetrating the solidification part;

[0068] 1241a, 1341a, 1441a: penetration part;

[0069] 1552: Extending out of the curing part;

[0070] 1651: first extended curing portion;

[0071] 1652: second extended curing portion;

[0072] 1850, 1950, 2050, 2150: wire accommodating part;

[0073] 1850a: Wire passage;

[0074] 1851, 1951, 2051, 2151: sealed through holes. DETAILED DESCRIPTION

[0075] [Light-emitting device]

[0076] Hereinafter, a light emitting device according to an embodiment of the present invention will be described in detail with reference to the drawings.

[0077] Figure 1B 1 is a cross-section diagram of a light emitting device 100 according to an embodiment of the present invention. Figure 1BAs shown, light emitting device 100 includes substrate 210 , light source 220 disposed on substrate 210 , and light flux controlling member 300 disposed on substrate 210 to cover light source 220 .

[0078] like Figure 1B As shown, light beam control component 300 has incident surface 310, exit surface 320, and flange 330, and controls light from a light source.

[0079] The flange 330 has an adhesive receiving portion 340 penetrating the flange 330. The adhesive is filled in the adhesive receiving portion 340 and cured to become an adhesive cured product 350. The adhesive cured product 350 is bonded to the substrate 210. The adhesive cured product 350 is filled in a plurality of penetration portions 341 extending in the thickness direction of the flange 330 and a first connection recess 342 extending on the upper surface of the flange 330 in a manner connecting the plurality of penetration portions 341.

[0080] By filling cured adhesive 350 in this manner, light flux controlling member 300 can be fixed to substrate 210 with a small amount of adhesive, without covering flange 330 with cured adhesive 350 (see also FIG. 2 ). Figure 1B and Figure 1A ).

[0081] Next, each structure of the light emitting device 100 will be described.

[0082] (Substrate)

[0083] Light source 220 and light beam control member 300 are arranged on substrate 210, and substrate 210 supports light source 220 and light beam control member 300. The type of substrate 210 is not particularly limited. From the viewpoint of supplying power to light source 220, preferably, a circuit substrate is used as substrate 210. Substrate 210 is, for example, a glass composite substrate, an epoxy glass substrate, an aluminum substrate, or the like.

[0084] (light source)

[0085] The light source 220 is the light source of the light emitting device 100 and is mounted on the substrate 210. The light source 220 is, for example, a light emitting element such as a light emitting diode (LED). In addition, the type of the light emitting diode is not particularly limited. A light emitting diode that emits light from the top surface is suitable for use in the light emitting device 100 of this embodiment, but a light emitting element that emits light from the top surface and the side surface (for example, a COB (Chip on Board) type light emitting diode) can also be used. The wavelength of the light emitted by the light source 220 is not particularly limited, but preferably, the light source 220 of the present invention emits ultraviolet rays. In the present embodiment, the light source 220 is a light emitting diode that emits ultraviolet rays, and particularly preferably, a light emitting diode that emits UVC (ultraviolet rays with a wavelength of 200nm to 280nm).

[0086] (Beam Control Components)

[0087] The light beam control component 300 is an optical component that controls the light distribution of the light emitted from the light source 220, and is arranged on the substrate 210 in a manner that covers the light source 220. The light beam control component 300 is formed, for example, by injection molding. The material of the light beam control component 300 is not particularly limited as long as it is a material that can allow light of a desired wavelength to pass through. In the present embodiment, the light that the light beam control component 300 allows to pass through is ultraviolet light, specifically UVC. In order to allow such light to pass through, preferably, the material of the light beam control component 300 is silicone. Preferably, the light beam control component 300 is arranged on the light source 220 in a manner that the central axis CA of the light beam control component 300 coincides with the optical axis LA of the light source 220. Here, the "optical axis LA of the light source 220" refers to the light at the center of the three-dimensional outgoing light beam from the light source 220.

[0088] like Figure 1B As shown, light flux controlling member 300 has incident surface 310, emission surface 320, flange 330, and adhesive container 340. In addition, light emitting device 100 has adhesive cured material 350 filled in adhesive container 340 of light flux controlling member 300. Each of these will be described below.

[0089] <Incident surface>

[0090] Incident surface 310 is the inner surface of the recessed portion, and allows the light emitted from light source 220 to enter the interior of light beam control component 300. In the present embodiment, incident surface 310 intersects with the central axis CA of light beam control component 300 and is rotationally symmetric (circularly symmetric) about central axis CA. The shape of incident surface 310 is not particularly limited, and may be designed in a manner that can cooperate with exit surface 320 to achieve a desired light distribution.

[0091] <Exit surface>

[0092] The exit surface 320 controls the traveling direction of the light incident from the incident surface 310 and emits it to the outside of the light beam control component 300. The exit surface 320 is arranged on the front side of the light beam control component 300 in a manner intersecting with the central axis CA of the light beam control component 300. In the present embodiment, the exit surface 320 is rotationally symmetric (circularly symmetric) about the central axis CA. The shape of the exit surface 320 is not particularly limited, and it can be designed in a manner that can cooperate with the incident surface 310 to achieve the desired light distribution.

[0093] <Flange, Adhesive Receiving Portion, Adhesive Cured Product>

[0094] Light beam control member 300 has flange 330 protruding in a direction away from central axis CA at its outer periphery. Flange 330 has adhesive receiving portion 340 penetrating flange 330. Adhesive receiving portion 340 is formed as a through hole that penetrates flange 330 by connecting a plurality of openings on the substrate 210 side of flange 330 with an opening on the upper surface side of flange 330. More specifically, as described above, adhesive receiving portion 340 has, in a cross section along the thickness direction of flange 330, a plurality of penetrating portions 341 extending in the thickness direction of flange 330, and a first connecting recess 342 extending on the upper surface of flange 330 in a manner connecting the plurality of penetrating portions 341. The structure of adhesive receiving portion 340 is not particularly limited as long as it has a plurality of penetrating portions 341 and a first connecting recess 342. For example, the plurality of penetrating portions 341 in the cross section may be a plurality of portions separated from each other in one through hole, or may be a plurality of through holes separated from each other.

[0095] Of the adhesive cured material 350 filled in adhesive receiving portion 340, the adhesive cured material 350 filled in a plurality of penetration portions 341 is adhered to the substrate and fixed to the substrate. In addition, the adhesive cured material 350 filled in first connection recess 342 connects the adhesive cured material 350 filled in a plurality of penetration portions 341. Thus, when light beam control component 300 is subjected to a force to separate from substrate 210, adhesive cured material 350 can apply a force to push light beam control component 300 back to the substrate 210 side. With such a configuration, adhesive cured material 350 helps to always fix light beam control component 300 to substrate 210. The shape of the opening of first connection recess 342 on the upper surface side of flange 330 of adhesive receiving portion 340 is not particularly limited, and is preferably, for example, a substantially rectangular, substantially circular, substantially elliptical, or substantially trapezoidal shape. The type of adhesive is not particularly limited, and may be appropriately selected according to the material constituting substrate 210 and the material constituting light flux controlling member 300. For example, the adhesive may be a non-silicone adhesive such as a urethane adhesive.

[0096] [Embodiments of Light Beam Control Component]

[0097] Next, as specific aspects of light flux controlling member 300 having the above-described structure, light flux controlling members according to Embodiments 1 to 11 will be described.

[0098] (Implementation Method 1)

[0099] Figure 2A is a perspective view of light flux controlling component 400 according to Embodiment 1. Figure 2B , Figure 2C Adhesive cured material 450 filled in adhesive containing portion 440 of light flux controlling member 400 is shown.

[0100] according to Figure 2A It can be seen that light flux controlling member 400 is circular in a plan view, and light emission surface 420 is also circular. Flange 430 is annular in a plan view of light flux controlling member 400 and surrounds light emission surface 420 .

[0101] A plurality of adhesive containing parts 440 are disposed on the flange 430 . In the present embodiment, the number of adhesive containing parts 440 is 4. In the present embodiment, the four adhesive containing parts 440 are disposed at equal intervals on the annular flange 430 .

[0102] The adhesive receiving portion 440 includes: a plurality of through holes 441 extending in the thickness direction of the flange 430, and a first connecting recess 442 extending on the upper surface of the flange 430 in a manner of connecting the plurality of through holes 441. In this embodiment, in one adhesive receiving portion 440, the number of through holes 441 is two, and the two through holes 441 are connected by one first connecting recess 442. Specifically, the two through holes 441 open in the first connecting recess 442. As described above Figure 1B As shown, such adhesive receiving portion 440 includes, in a cross section along the thickness direction of the flange: a plurality of through portions (two through holes 441) extending along the thickness direction of the flange, and a first connecting recess (first connecting recess 442) extending on the upper surface of the flange in a manner connecting the plurality of through portions. Thus, light beam control component 400 can be fixed to the substrate with a small amount of adhesive.

[0103] In this embodiment, if Figure 2A As shown in the left figure, the two through holes 441 are arranged side by side in the radial direction of the annular flange 430, and a first connecting recess 442 extending in the radial direction connects the two through holes 441 arranged side by side.

[0104] It should be noted that the direction in which the plurality of through holes 441 are arranged side by side may not be radial, and the arrangement method is not particularly limited. Figure 2A As shown in the right figure, the plurality of through holes 441 are arranged side by side in the circumferential direction of the annular flange 430, and the plurality of through holes 441 arranged side by side in this way are connected by a first connecting recess 442 extending in the circumferential direction.

[0105] In this embodiment, the through hole 441 is in the shape of a rectangular parallelepiped, and the first connecting recess 442 is also in the shape of a rectangular parallelepiped. Therefore, when the light beam control component 400 is viewed from above, the through hole 441 is rectangular, and the first connecting recess 442 is also rectangular. When the light beam control component 400 is viewed from above, the long side direction of the first connecting recess 442 can be configured to be along the radial direction of the annular flange or along the circumferential direction of the flange, but preferably, the long side direction of the first connecting recess 442 is configured to be along the circumferential direction (refer to Figure 2ABy making the long side direction of the first connection recess 442 along the circumferential direction, the width of the flange 430 can be reduced.

[0106] Figure 2B , Figure 2C The adhesive cured product 450 filled in the adhesive receiving portion 440 as described above is shown. Figure 2B is a perspective view of cured adhesive 450 as viewed from the front side of light flux controlling member 400 . Figure 2C This is a perspective view of the adhesive cured product 450 as viewed from the back side.

[0107] The adhesive cured product 450 has a shape complementary to the adhesive receiving portion 440. Therefore, the adhesive cured product 450 has: two through-cured portions 451 corresponding to the two through holes 441, and a first connecting cured portion 452 corresponding to the first connecting recess 442 that connects the two through-cured portions 451. In this embodiment, the through-cured portion 451 is in the shape of a rectangular parallelepiped, and the connecting cured product is also in the shape of a rectangular parallelepiped. The bottom surface of the through-cured portion 451 is bonded to the substrate 210 and fixed to the substrate 210. Figure 2D As shown, when the length h1 of the flange 430 of the first connection solidified portion 452 in the thickness direction is set to 1, the length h2 of the flange 430 penetrating the solidified portion 451 in the thickness direction may be, for example, 0.5 to 3. From the viewpoint of firmly fixing the light beam control component to the substrate, h2 is preferably greater than h1. For example, when h1 is set to 1, h2 is preferably 1 to 3. Figure 2D It can be seen that in this embodiment, the portion where the inner wall surfaces of the adhesive receiving portion 440 intersect with each other (the portion where the inner wall surface of the through hole 441 intersects with the inner wall surface of the first connecting recess 442) is illustrated with an edge, and stress is easily concentrated at such a corner, and it is easy to break when a force is applied. Preferably, an R shape is added to this portion to increase the breaking strength.

[0108] (Effect)

[0109] Light beam controlling member 400 of Embodiment 1 has adhesive containing portion 440 as described above, and thus includes, in a cross section along the thickness direction of flange 430, a plurality of through portions (a plurality of through holes 441) extending along the thickness direction of flange 430, and a first connecting recess (a first connecting recess 442) extending on the upper surface of flange 430 in a manner connecting the plurality of through portions (see FIG. Figure 1B). Thus, the light beam control component 400 can be fixed to the substrate 210 while preventing the amount of adhesive used from increasing. In addition, according to the light emitting device of the present embodiment, since the light beam control component is not fixed to the substrate by covering the flange 430 with a cured adhesive, the fixing force does not change due to the size of the flange 430. In addition, since it is not necessary to cover the flange 430 with a cured adhesive, a part of the emission surface will not be covered by the cured adhesive to hinder the emission of light. In addition, according to the light emitting device of the present embodiment, it is not necessary to provide an outer frame required for filling the flange 430 with adhesive so that the cured adhesive covers the flange. In addition, according to the light emitting device of the present embodiment, only a small amount of adhesive is required, so the time required for curing can be shortened.

[0110] (Implementation Method 2)

[0111] Figure 3A is a perspective view of light flux controlling component 500 according to Embodiment 2. Figure 3B , Figure 3C Adhesive cured material 550 filled in adhesive container 540 of light flux controlling member 500 is shown. Embodiment 2 will be described below with a focus on differences from Embodiment 1, and the same components are denoted by the same reference numerals and description thereof will be omitted.

[0112] Adhesive containing portion 540 of light beam control member 500 of Embodiment 2 has two through holes 541, and two through holes 541 are opened in first connecting recess 542, and first connecting recess 542 connects two through holes 541. Through hole 541 is roughly semi-cylindrical in shape, and first connecting recess 542 is disc-shaped. As in Embodiment 1, two through holes 541 may be arranged in the radial direction or in the circumferential direction. In this embodiment, two through holes 541 are arranged in the circumferential direction.

[0113] Figure 3B , Figure 3C The adhesive cured product 550 filled in the adhesive receiving portion 540 as described above is shown. Figure 3B is a perspective view of cured adhesive 550 as viewed from the front side of light flux controlling component 500 . Figure 3C This is a perspective view of the adhesive cured product 550 as viewed from the back side.

[0114] The adhesive cured material 550 has a shape complementary to the adhesive receiving portion 540. Therefore, the adhesive cured material 550 has: two through-cured portions 551 of approximately semi-cylindrical shape, and a disc-shaped first connecting cured portion 552 that connects the two through-cured portions 551 on the upper surface of the flange 530. In the present embodiment, a disc-shaped first connecting recess 542 is shown, but it is not limited to this. A flange that is continuous with the outer periphery of the circular exit surface 420 and has a rectangular shape when viewed from above may also be provided, and a rectangular first connecting recess may also be formed in accordance with the outer shape of the flange. In addition, a plurality of adhesive receiving portions may also be formed into a circular or rectangular shape and arranged side by side. As for the configuration of the adhesive receiving portion, it is sufficient to fix the light beam control component to the substrate using the adhesive cured material filled in the adhesive receiving portion, regardless of the configuration shape.

[0115] (Effect)

[0116] Light flux controlling member 500 according to the second embodiment has the same effects as light flux controlling member 400 according to the first embodiment.

[0117] (Implementation 3)

[0118] Figure 4A is a perspective view of light beam controlling component 600 according to Embodiment 3. Figure 4B , Figure 4C Adhesive cured material 650 filled in adhesive container 640 of light flux controlling member 600 is shown. Embodiment 3 will be described below mainly focusing on differences from other embodiments, and the same components are denoted by the same reference numerals and their description will be omitted.

[0119] Adhesive container 640 of light flux controlling member 600 according to Embodiment 3 has two through holes 641a and 641b, and through holes 641a and 641b are connected by first connection recess 642. Specifically, through holes 641a and 641b are opened in first connection recess 642, respectively.

[0120] The through holes 641a and 641b are shaped like a roughly rectangular parallelepiped (a column with a part of the ring as the bottom surface) that is bent in a manner along the circumferential direction of the annular flange 630. The through holes 641a and 641b are arranged side by side along the radial direction of the flange. In the radial direction, the through hole 641a is arranged at a position closer to the outside, while the through hole 641b is arranged at a position closer to the inside. Since the through hole 641a is arranged at a position closer to the outside, its length in the circumferential direction is longer than that of the through hole 641b. That is, the through holes 641a and 641b are arranged within a certain angle range with the central axis of the light beam control component 600 as the center. The first connection recess 642 connecting the through holes 641a and 641b also has a roughly rectangular parallelepiped (a column with a part of the ring as the bottom surface) shape that is bent in a manner along the circumferential direction of the annular flange 630.

[0121] The adhesive cured material 650 has a shape complementary to the adhesive receiving portion 640. Therefore, the adhesive cured material 650 has substantially rectangular parallelepiped-shaped through-cured portions 651a and 651b that are bent in a manner along the circumference of the flange 630. In the radial direction, the through-cured portion 651a is arranged at a position closer to the outside, and the through-cured portion 651b is arranged at a position closer to the inside. Since the through-cured portion 651a is arranged at a position closer to the outside, its length in the circumferential direction is longer than that of the through-cured portion 651b. The first connecting cured portion 652 that connects the through-cured portions 651a and 651b has a substantially rectangular parallelepiped-shaped (a column with a portion of a circular ring as a bottom surface) that is bent in a manner along the circumference of the annular flange 630.

[0122] (Effect)

[0123] Light flux controlling member 600 according to the third embodiment has the same effects as light flux controlling member 400 according to the first embodiment.

[0124] (Implementation 4)

[0125] Figure 5A is a perspective view of light flux controlling component 700 according to Embodiment 4. Figure 5B , Figure 5C Adhesive cured material 750 filled in adhesive container 740 of light flux controlling member 700 is shown. Embodiment 4 will be described below mainly focusing on differences from other embodiments, and the same components are denoted by the same reference numerals and their description will be omitted.

[0126] Adhesive container 740 included in light flux controlling member 700 according to the fourth embodiment includes two through holes 741 and first connecting recess 742 , and two through holes 741 are connected by first connecting recess 742 . Specifically, two through holes 741 open into first connecting recess 742 .

[0127] The through hole 741 has a substantially rectangular parallelepiped (a column with a portion of the ring as the bottom surface) shape that is bent in a manner along the circumference of the annular flange 730. Such two through holes 741 are arranged side by side along the circumference of the flange 730. The first connection recess 742 connecting the two through holes 741 has a substantially rectangular parallelepiped (a column with a portion of the ring as the bottom surface) shape that is bent in a manner along the circumference of the flange 730.

[0128] The adhesive cured product 750 has a shape complementary to the adhesive receiving portion 740. Therefore, the adhesive cured product 750 has two substantially rectangular parallelepiped (cylindrical with a portion of a circular ring as the bottom)-shaped through-cured portions 751 that are bent in a manner along the circumference of the flange 730. In addition, the first connecting cured portion 752 that connects the two through-cured portions 751 has a substantially rectangular parallelepiped (cylindrical with a portion of a circular ring as the bottom)-shaped through-cured portion 752 that is bent in a manner along the circumference of the annular flange 730.

[0129] (Effect)

[0130] Light flux controlling member 700 according to the fourth embodiment has the same effects as light flux controlling member 400 according to the first embodiment.

[0131] (Implementation method 5)

[0132] Fig. 6A is a perspective view of light beam controlling component 800 according to Embodiment 5. Figure 6B , Figure 6C The adhesive cured material 850 filled in adhesive container 840 of light flux controlling member 800 is shown. Embodiment 5 will be described below mainly focusing on differences from other embodiments, and the same components are denoted by the same reference numerals and their description will be omitted.

[0133] Adhesive container 840 included in light flux controlling member 800 according to Embodiment 5 includes two through holes 841 and first connecting recess 842 , and two through holes 841 are connected by one first connecting recess 842 . Specifically, two through holes 841 open into first connecting recess 842 .

[0134] The two through holes 841 are inclined so as to separate from each other as they approach the back side from the front side of the beam control component 800. Therefore, the through hole 841 has an inclined surface 841a inclined relative to the thickness direction of the flange 830. In the present embodiment, the two through holes 841 are arranged side by side without a gap on the front side of the beam control component 800. It can be considered that the inclined surface 841a helps to firmly fix the beam control component 800 to the substrate. The side-by-side direction of the two through holes 841 can be the circumferential direction of the annular flange 830 or the radial direction. In the present embodiment, the two through holes 841 are arranged side by side along the circumferential direction.

[0135] Adhesive cured product 850 has a shape complementary to adhesive containing portion 840. Therefore, adhesive cured product 850 has: two penetrating cured portions 851 inclined so as to be separated from each other as moving from the front side to the back side of light beam control member 800; and first connecting cured portion 852 connecting two penetrating cured portions 851. Penetrating cured portion 851 has inclined surface 851a.

[0136] (Effect)

[0137] Light flux controlling member 800 of embodiment 5 has the same effects as those of embodiment 1. Furthermore, since adhesive receiving portion 840 and adhesive cured product 850 have inclined surfaces 841 a and 851 a , respectively, it is considered that light flux controlling member 800 is firmly fixed to the substrate.

[0138] (Implementation method 6)

[0139] Fig. 7A is a perspective view of light beam controlling component 900 according to Embodiment 6. Figure 7B , Figure 7C The figure shows cured adhesive 950 filled in adhesive containing portion 940 of light flux controlling member 900. Embodiment 6 is a modified example of Embodiment 5, and therefore Embodiment 6 will be described mainly focusing on the differences from Embodiment 5.

[0140] Adhesive containing portion 940 included in light beam controlling member 900 of Embodiment 6 includes two through holes 941 and first connecting recess 942, and two through holes 941 are connected by one first connecting recess 942. Two through holes 941 are inclined in the same manner as through hole 841 described above, but are different from light beam controlling member 800 in that two through holes 941 are arranged side by side at an interval on the front side of light beam controlling member 900. First connecting recess 942 connects two through holes 941 arranged side by side at an interval in this manner. Through hole 941 has inclined surface 941a.

[0141] Adhesive cured material 950 has a shape complementary to adhesive accommodating portion 940. Therefore, adhesive cured material 950 has two through-cured portions 951 spaced apart on the front side and inclined so as to separate from each other as approaching the back side from the front side of light beam control member 900, and one connecting cured portion 952 connecting the two through-cured portions 951. Through-cured portion 951 has an inclined surface 951a.

[0142] (Effect)

[0143] Light flux controlling component 900 according to the sixth embodiment has the same effects as light flux controlling component 800 according to the fifth embodiment.

[0144] (Implementation 7)

[0145] Fig. 8A is a perspective view of light flux controlling component 1000 according to Embodiment 7. Figure 8B Adhesive cured material 1050 filled in adhesive container 1040 of light flux controlling member 1000 is shown. Embodiment 7 will be described below mainly focusing on differences from other embodiments, and the same components are denoted by the same reference numerals and their description will be omitted.

[0146] Adhesive containing portion 1040 of light beam controlling component 1000 of Embodiment 7 includes: a plurality of through holes 1041 arranged side by side in the circumferential direction of flange 1030; and a first connecting recess 1042 extending in the circumferential direction, wherein a plurality of through holes 1041 are connected by first connecting recess 1042 on the upper surface of flange 1030. Specifically, all through holes 1041 are opened in one first connecting recess 1042. First connecting recess 1042 is arranged on the upper surface of flange 1030 so as to surround exit surface 420 when light beam controlling component 1000 is viewed from above. In the present embodiment, first connecting recess 1042 is arranged in a ring shape.

[0147] Adhesive cured material 1050 has a shape complementary to adhesive receiving portion 1040. Therefore, adhesive cured material 1050 has: a plurality of through-cured portions 1051 arranged side by side in the circumferential direction of flange 1030; and a first connecting cured portion 1052 connecting a plurality of through-cured portions 1051. First connecting cured portion 1052 is annular in a plan view of light beam controlling component 1000. In addition, first connecting cured portion 1052 is arranged on the upper surface of flange 1030.

[0148] (Effect)

[0149] Light flux controlling component 1000 according to the seventh embodiment has the same effects as light flux controlling component 400 according to the first embodiment.

[0150] (Implementation 8)

[0151] Fig.9A The left figure is a stereoscopic view of light beam control component 1100 of Embodiment 8 as viewed from the front side. Fig.9A The right figure is a stereoscopic view viewed from the back side. Fig. 9B The figure shows cured adhesive 1150 filled in adhesive containing portion 1140 of light flux controlling member 1100. Embodiment 8 is a modified example of Embodiment 7, and therefore Embodiment 8 will be described below mainly focusing on differences from Embodiment 7.

[0152] Adhesive containing portion 1140 of light beam controlling component 1100 of Embodiment 8 includes: a plurality of through holes 1141 arranged side by side in the circumferential direction of flange 1130; a first connecting recess 1142 extending in the circumferential direction of flange 1130 and arranged on the upper surface of flange 1130; and a second connecting recess 1143 extending in the circumferential direction of flange 1130 and arranged on the lower surface of flange 1130. First connecting recess 1142 and second connecting recess 1143 connect a plurality of through holes 1141 at the upper surface and the lower surface of flange 1130, respectively. When light beam controlling component 1100 is viewed from above, first connecting recess 1142 is in the shape of a ring surrounding emission surface 420. Similarly, when light beam controlling component 1100 is viewed from above, second connecting recess 1143 is in the shape of a ring surrounding incident surface 410.

[0153] The adhesive cured material 1150 has a shape complementary to the adhesive receiving portion 1140. Therefore, the adhesive cured material 1150 has: a plurality of through-cured portions 1151 arranged side by side along the circumferential direction of the flange 1130; and a first connection cured portion 1152 and a second connection cured portion 1153 connecting the plurality of through-cured portions 1151. The first connection cured portion 1152 is arranged on the upper surface of the flange 1130, and the second connection cured portion 1153 is arranged on the lower surface of the flange 1130. The first connection cured portion 1152 and the second connection cured portion 1153 are annular.

[0154] (Effect)

[0155] Light flux controlling member 1100 according to Embodiment 8 has the same effects as those of Embodiment 7. In addition, since second connection and solidification portion 1153 is provided, light flux controlling member 1100 can be more firmly fixed to the substrate.

[0156] (Implementation method 9)

[0157] Fig. 10A is a perspective view of light beam controlling component 1200 according to Embodiment 9. Fig. 10B , Fig. 10C The figure shows cured adhesive 1250 filled in adhesive containing portion 1240 of light flux controlling member 1200. Next, light flux controlling member 1200 of the ninth embodiment will be described, focusing on the differences from the other embodiments.

[0158] Light beam control member 1200 of Embodiment 9 has flange 1230 and adhesive receiving portion 1240. Adhesive receiving portion 1240 has: a through hole including two penetration portions 1241a and one connecting penetration portion 1241b; and first connecting recess 1242 connecting two penetration portions 1241a and one connecting penetration portion 1241b on the front side of the flange. In the above-mentioned one through hole, two penetration portions 1241a having a substantially rectangular parallelepiped shape are connected to both ends of one connecting penetration portion 1241b having a substantially semi-cylindrical shape. First connecting recess 1242 is semicircular in plan view.

[0159] Adhesive cured product 1250 has a shape complementary to adhesive containing portion 1240. Therefore, adhesive cured product 1250 has: two substantially rectangular solidified penetration portions 1251a; one substantially semi-cylindrical connected penetration cured portion 1251b connecting two penetration cured portions 1251a; and first connected solidified portion 1252 connecting two penetration cured portions 1251a and one connected penetration cured portion 1251b on the front side of flange 1230. The shape of first connected solidified portion 1252 is semicircular when light beam controlling component 1200 is viewed from above.

[0160] (Effect)

[0161] Light flux controlling component 1200 according to the ninth embodiment, similarly to light flux controlling component 400 according to the first embodiment, has two penetration portions 1241a ( Figure 1B and a first connecting recess 1242 ( Figure 1B Therefore, light flux controlling component 1200 according to the ninth embodiment has the same effect as light flux controlling component 400 according to the first embodiment.

[0162] (Implementation 10)

[0163] Fig.11A is a perspective view of light flux controlling component 1300 according to embodiment 10. Fig. 11B , Fig. 11C Adhesive cured material 1350 filled in adhesive containing portion 1340 of light flux controlling component 1300 is shown. Light flux controlling component 1300 of embodiment 10 is a modified example of light flux controlling component 1200 of embodiment 9. Therefore, light flux controlling component 1300 will be described below mainly focusing on the differences from light flux controlling component 1200.

[0164] The light beam control component 1300 of embodiment 10 has a flange 1330 and an adhesive receiving portion 1340. The adhesive receiving portion 1340 has: a through hole including two through holes 1341a and a connecting penetration portion 1341b; and a first connecting recess 1342 connecting the two through portions 1341a and the one connecting penetration portion 1341b on the front side of the flange. In the above-mentioned one through hole, the two through portions 1341a of approximately rectangular shape are respectively connected to the two ends of the connecting penetration portion 1341b of approximately U shape when viewed from above. The connecting penetration portion 1341b has a shape in which two rectangular blocks are connected at an angle of 90° at both ends of a rectangular block. The first connecting recess 1342 is approximately rectangular in shape when viewed from above.

[0165] Adhesive cured material 1350 has a shape complementary to adhesive containing portion 1340. Therefore, adhesive cured material 1350 has: two substantially rectangular solid-shaped through cured portions 1351a; one substantially semi-square cylindrical through connected cured portion 1351b connecting two through cured portions 1351a; and first connected cured portion 1352 connecting two through cured portions 1351a and one through connected cured portion 1351b on the front side of flange 1330. The shape of first connected cured portion 1352 is rectangular when light beam controlling component 1200 is viewed from above.

[0166] (Effect)

[0167] Light flux controlling component 1300 according to embodiment 10, like light flux controlling component 400 according to embodiment 1, has two penetration portions 1341a ( Figure 1B and a first connecting recess 1342 ( Figure 1B Therefore, light flux controlling component 1300 according to embodiment 10 has the same effect as light flux controlling component 400 according to embodiment 1.

[0168] (Implementation 11)

[0169] Fig. 12A is a perspective view of light beam controlling component 1400 according to embodiment 11. Fig. 12B , Fig. 12C Adhesive cured material 1450 filled in adhesive containing portion 1440 of light flux controlling component 1400 is shown. Light flux controlling component 1400 of embodiment 11 is a modified example of light flux controlling component 1200 of embodiment 9. Therefore, light flux controlling component 1400 will be described mainly focusing on the differences from light flux controlling component 1200.

[0170] Light flux controlling member 1400 of embodiment 11 has flange 1430 and adhesive containing portion 1440. Adhesive containing portion 1440 has: a through hole including through portion 1441a having a substantially C-shape in a plan view; and first connecting recess 1442 connecting through portion 1441a on the front side of flange 1430. First connecting recess 1442 has a circular shape in a plan view.

[0171] The adhesive cured product 1450 has a shape complementary to the adhesive receiving portion 1440. Therefore, the adhesive cured product 1450 has: a through-cured portion 1451a having a substantially C-shaped shape in a plan view; and a first connecting cured portion 1452 connecting the through-cured portion 1451a on the front side of the flange 1430. The shape of the first connecting cured portion 1452 is circular in a plan view.

[0172] (Effect)

[0173] Light flux controlling component 1400 according to embodiment 11 is similar to light flux controlling component 400 according to embodiment 1, and has two through portions 1441a (such as Figure 1B and a first connecting recess 1442 ( Figure 1B Therefore, light beam controlling component 1400 of embodiment 11 has the same effect as that of embodiment 1.

[0174] [Reference example]

[0175] (Reference Example 1)

[0176] Fig.13A is a perspective view of light beam controlling component 1500 of reference example 1, Fig. 13B Adhesive cured material 1550 filled in adhesive receiving portion 1540 of light flux controlling member 1500 is shown.

[0177] Light flux controlling member 1500 of reference example 1 has flange 1530 and adhesive containing portion 1540. Adhesive containing portion 1540 has through hole 1541 and protruding recess 1542 disposed on the front side of flange 1530, protruding from through hole 1541 and having a larger diameter than through hole 1541. Through hole 1541 opens into protruding recess 1542.

[0178] Adhesive cured material 1550 has a shape complementary to adhesive containing portion 1540. Therefore, adhesive cured material 1550 has: penetrating cured portion 1551; and protruding cured portion 1552 disposed on the upper surface of penetrating cured portion 1551. Protruding cured portion 1552 applies a force to light beam controlling component 1500 to push light beam controlling component 1500 back toward the substrate when light beam controlling component 1500 receives a force in a direction that causes light beam controlling component 1500 to move away from the substrate.

[0179] (Reference Example 2)

[0180] Fig.14A is a perspective view of light beam control component 1600 of reference example 2, Fig. 14B It is along Fig.14A The cross-sectional diagram of line BB, Fig. 14C Adhesive cured material 1650 filled in adhesive receiving portion 1640 of light flux controlling member 1600 is shown.

[0181] Light beam control member 1600 includes flange 1630 and adhesive receiving portion 1640 disposed on flange 1630. Adhesive receiving portion 1640 has a shape in which two substantially rectangular parallelepiped bodies are arranged in a stepped manner. Fig. 14B As shown, the adhesive receiving portion 1640 includes: a first protruding recess 1641 corresponding to the first step and arranged on the back side of the flange 1630; and a second protruding recess 1642 corresponding to the second step and arranged on the front side of the flange 1630. The direction in which the first protruding recess 1641 protrudes is opposite to the direction in which the second protruding recess 1642 protrudes.

[0182] Fig. 14C The adhesive cured product 1650 shown in FIG. 1 has a shape complementary to the adhesive receiving portion 1640. Therefore, the adhesive cured product 1650 has a shape in which two rectangular parallelepipeds are arranged in a stepped manner. Fig. 14C As shown, adhesive cured material 1650 includes: first extending cured portion 1651 disposed on the back side of flange 1630 and corresponding to the first step; and second extending cured portion 1652 disposed on the front side of the flange and corresponding to the second step. The direction in which first extending cured portion 1651 extends is opposite to the direction in which second extending cured portion 1652 extends. Second extending cured portion 1652 applies a force to light beam controlling component 1600 to push light beam controlling component 1600 back toward the substrate when light beam controlling component 1600 receives a force in a direction in which light beam controlling component 1600 is separated from the substrate.

[0183] (Implementation 12)

[0184] Fig.15AThis is a top view of a light emitting device having light flux controlling component 1700 according to embodiment 12. Fig. 15B It is along Fig.15A The cross-sectional diagram of line BB, Fig. 15C It is along Fig.15A Cross-sectional view of the CC line.

[0185] In the above-mentioned embodiments and reference examples, the shape of the flange is annular when the light beam control component is viewed from above, but the shape of the flange is not limited thereto. Fig.15A As shown, the flange 1730 may be in a shape other than a ring shape when viewed from above, which is the shape of the portion after removing the exit surface 420 arranged in the center and having various shapes (e.g., a circular shape, etc.) according to the desired light distribution from the quadrilateral. More specifically, in this embodiment, the flange 1730 is in a shape having multiple (four) corners. In addition, in this embodiment, four adhesive receiving portions 1740 are arranged, respectively arranged at positions corresponding to the multiple (four) corners.

[0186] Similar to the above-described embodiment, the adhesive containing portion 1740 has a plurality of through holes 1741 and a first connection recess 1742 .

[0187] In addition, if Fig.15A As shown, a wire 211 is sometimes arranged on the substrate 210. The wire 211 is, for example, an insulated wire, and after the insulating film at the front end thereof is peeled off, the conductive wire inside the wire is electrically connected to the circuit formed on the substrate 210 by solder or the like. Here, the connection portion between the wire 211 and the circuit of the substrate 210 is exposed to the outside, and there is a possibility that condensation or the like may have a bad effect on the electrical connection. Therefore, it is preferred that the electrical connection portion including the end 211a (connection portion) of the wire and the solder is sealed. In embodiments 13 to 16 described later, a structure for sealing the end 211a of the wire is described.

[0188] Furthermore, in this embodiment, a method of positioning by fitting a convex portion formed on the back surface of light beam control member 1700 into a concave portion formed on substrate 210 is shown, but the present invention is not limited thereto, and substrate 210 and light beam control member 1700 may be fixed simply by the adhesive cured material filled in the adhesive receiving portion. The same applies to the thirteenth to sixteenth embodiments described later.

[0189] (Effect)

[0190] Light flux controlling component 1700 according to embodiment 12 has the same effects as those of embodiment 1.

[0191] (Implementation 13)

[0192] Fig.16AThis is a top view of a light emitting device having light flux controlling component 1800 according to embodiment 13. Fig. 16B It is along Fig.16A The cross-sectional diagram of line BB, Fig. 16C It is along Fig.16A Cross-sectional view of the CC line.

[0193] like Figures 16A to 16C As shown, flange 1830 of beam controlling member 1800 has wire accommodating portion 1850 for accommodating end portion 211 a of a wire disposed on substrate 210 .

[0194] The wire material accommodating portion 1850 has a wire material passage 1850a for allowing a linear wire material to pass therethrough, and a sealing through hole 1851 serving as a space in which a cured adhesive for sealing exists.

[0195] The wire passage 1850a only needs to be configured to allow the wire disposed on the substrate to pass through. The wire passage 1850a may be a groove or a through hole extending in the direction in which the flange 1830 protrudes (in a direction parallel to the surface of the substrate). The wire passage 1850a communicates with the sealing through hole 1851 .

[0196] The sealing through hole 1851 only needs to be configured to form a space for sealing the electrical connection portion including the end 211a (connecting portion) of the wire and the solder when the adhesive is injected and cured. In the present embodiment, the sealing through hole 1851 is arranged on the substrate 210 and forms a concave portion with the surface of the substrate 210 as the bottom, and the adhesive cured material 1860 for sealing is arranged in the concave portion.

[0197] In the present embodiment, the sealing through hole 1851 is a through hole extending in the thickness direction of the flange 1830, and is formed such that the length (hole depth) of the sealing through hole 1851 in the extension direction is longer than the outer diameter of the wire 211, and can be filled with an adhesive for reliably sealing the electrical connection part. In addition, in the present embodiment, the sealing through hole 1851 has an area that can accommodate the electrical connection part including the end 211a of the two wires and the solder when viewed from above. In addition, in the present embodiment, the sealing through hole 1851 is roughly rectangular when viewed from above.

[0198] In the present embodiment, the wire housing 1850 is provided so as to protrude from one side of the flange 1830 having a substantially rectangular outer shape in a plan view. In the present embodiment, the wire housing 1850 and the adhesive housing 1740 are not communicated with each other but are independent of each other.

[0199] (Effect)

[0200] Light flux controlling member 1800 according to Embodiment 13 has the same effects as those of Embodiment 12. In addition, since wire accommodating portion 1850 is provided, the electrical connection portion including end portion 211 a of the wire and the solder can be sealed with an adhesive.

[0201] (Implementation 14)

[0202] Fig.17A This is a top view of a light emitting device having light flux controlling component 1900 according to embodiment 14. Fig. 17B is along Fig.17A The cross-sectional diagram of line BB, Fig. 17C is along Fig.17A Implementation Example 14 will be described with a focus on the differences from Implementation Example 13.

[0203] Light beam control component 1900 of embodiment 14 is different from light beam control component 1800 of embodiment 13 described above in that wire housing 1950 is connected to one of adhesive housings 1940 among a plurality of adhesive housings 1940. Since wire housing 1950 is connected to adhesive housing 1940, it is not necessary to introduce adhesive separately, thereby improving efficiency. That is, light beam control component 1900 can be fixed to substrate 210 and the electrical joint portion including end 211a of the wire and solder can be sealed at the same time.

[0204] In light flux controlling member 1900, adhesive accommodating portion 1940 communicating with wire accommodating portion 1950 has two through holes 1941 and one first connecting recess 1942. In the present embodiment, it is first connecting recess 1942 that is directly communicating with sealing through hole 1951.

[0205] In a plan view, adhesive containing portion 1940 extends over substantially the entire length of one side of flange 1930 having a substantially rectangular outer shape.

[0206] (Effect)

[0207] Light beam controlling component 1900 of embodiment 14 has the same effects as those of embodiment 13. In addition, since wire accommodating portion 1950 is connected to adhesive accommodating portion 1940 , light beam controlling component 1900 can be fixed to substrate 210 and the electrical connection portion including wire end 211 a and solder can be sealed at the same time.

[0208] (Implementation 15)

[0209] Fig.18A This is a top view of a light emitting device including light flux controlling component 2000 according to embodiment 15. Fig.18B is along Fig.18A The cross-sectional diagram of line BB, Fig.18C is along Fig.18A Cross-sectional view of the CC line.

[0210] In light flux controlling member 2000 according to the fifteenth embodiment, wire accommodating portion 2050 communicates with adhesive accommodating portion 2040 .

[0211] Adhesive accommodating portion 2040 of light flux controlling member 2000 communicating with wire accommodating portion 2050 has three through holes 2041 and one first connecting recess 2042. In the present embodiment, sealing through hole 2051 communicates with through hole 2041.

[0212] More specifically, the three through holes 2041 are arranged side by side along one side of the flange 2030 having a substantially rectangular outer shape in a plan view, and the sealing through hole 2051 is connected to the middle through hole 2041 among the three through holes 2041 arranged side by side.

[0213] (Effect)

[0214] Light flux controlling component 2000 according to the fifteenth embodiment has the same effects as those of the fourteenth embodiment.

[0215] (Implementation 16)

[0216] Fig.19A This is a top view of a light emitting device having light flux controlling component 2100 according to embodiment 16. Fig.19B is along Fig.19A The cross-sectional diagram of line BB, Fig.19C is along Fig.19A Cross-sectional view of the CC line.

[0217] In light flux controlling member 2100 according to Embodiment 16, wire accommodating portion 2150 communicates with adhesive accommodating portion 2140 .

[0218] Adhesive containing part 2140 of beam control component 2100 connected to wire containing part 2150 has five through holes and one first connection recess 2142. The five through holes are arranged in a row along one side of the flange. In this embodiment, the middle through hole 2141 among the five through holes 2141 is directly connected to sealing through hole 2151.

[0219] (Effect)

[0220] Light flux controlling component 2100 according to embodiment 16 has the same effects as those of embodiment 14.

[0221] [other]

[0222] Preferably, the adhesive (e.g., urethane adhesive) is introduced in the following manner. That is, after the adhesive is introduced, if air remains between the substrate 210 and the urethane, the bonding area is reduced and the bonding strength is reduced. Therefore, in order to prevent air from remaining between the substrate 210 and the urethane, the outer diameter of the nozzle used to introduce the adhesive is preferably smaller than the short side of the through hole. In this way, the nozzle can be brought close to the substrate 210 to inject the adhesive, thereby preventing the occurrence of air remaining between the substrate 210 and the adhesive.

[0223] In addition, preferably, the adhesive (urethane adhesive) is injected into the central through-hole among the plurality of through-holes, whereby the adhesive diffuses from the center to the periphery, thereby shortening the distance traveled by the adhesive and reducing the introduction of air.

[0224] By injecting and curing the adhesive, the light flux controlling member can be fixed to the substrate and the electrical connection portion can be sealed with a relatively small amount of adhesive.

[0225] Fig. 20A In light flux controlling member 1800 according to Embodiment 13, the adhesive is injected into wire accommodating portion 1850 , and the adhesive has become adhesive cured product 1860 .

[0226] Fig. 20B In light flux controlling member 1900 according to Embodiment 14, the adhesive is injected into wire accommodating portion 1950 and adhesive accommodating portion 1940 communicating with wire accommodating portion 1950 , and the adhesive has become adhesive cured product 1960 .

[0227] [experiment]

[0228] An experiment was conducted to investigate the fixing strength of the light beam controlling component to the substrate. As the light beam controlling component, light beam controlling component 400 (see FIG. 1 ) of Embodiment 1 was used. Figure 2A ) and the light beam control component 1100 of embodiment 8 (refer to Fig.9A As the light beam control component 400 of the first embodiment, two types of light beam control components are used. One of them is a light beam control component (hereinafter also referred to as a long leg) in which the length h1 of the flange 430 of the first connecting solidified portion 452 in the thickness direction is set to 0.5 mm and the length h2 of the flange 430 in the thickness direction of the penetrating solidified portion 451 is set to 1 mm (refer to Figure 2D The other is a beam control member (hereinafter also referred to as a short leg) in which the length h1 of the flange 430 of the first connection solidified portion 452 in the thickness direction is set to 1 mm and the length h2 of the flange 430 penetrating the solidified portion 451 in the thickness direction is set to 0.5 mm (refer to Figure 2D ).

[0229] As the adhesive, a one-component urethane adhesive (manufactured by CITAKIRON Corporation: TAKIBOND #607) or a two-component urethane adhesive (manufactured by TOYOPOLYMER CO., LTD.: RUBYLON KA-10+KB-35ME) was used.

[0230] The beam control component was placed on the experimental substrate, and the adhesive was filled into the adhesive receiving portion of the beam control component and cured to fix the beam control component to the substrate. The incident surface of the fixed beam control component was pressed through the through hole set in the substrate, and the peel strength when the beam control component was peeled off was tested.

[0231] The experimental conditions and measurement results are shown in Table 1 below.

[0232] [Table 1]

[0233] Beam control components Urethane adhesive Peel strength(N) <![CDATA[Bonding area (mm 2 )]]> <![CDATA[(N / mm per unit area 2 )]]> Experiment 1 Implementation 1 (Long Legs) One-component type 21.1 16 131.9 Experiment 2 Implementation 1 (short legs) One-component type 16.6 16 103.8 Experiment 3 Implementation 8 One-component type 34.8 144.44 24.1 Experiment 4 Implementation 1 (Long Legs) Two-component type 21.9 16 136.9 Experiment 5 Implementation 1 (short legs) Two-component type 10.4 16 65.0 Experiment 6 Implementation 8 Two-component type 20.8 144.44 14.4

[0234] In all of Experiments 1 to 6, peel strengths that can withstand practical use were obtained. In addition, according to Table 1, when the light beam control component of Embodiment 1 was used, the light beam control component with long legs had higher peel strength. In addition, compared with the light beam control component of Embodiment 1, the light beam control component of Embodiment 8 had higher peel strength. In addition, the adhesive was a one-component type, which had higher peel strength.

[0235] [Method for manufacturing light emitting device]

[0236] The manufacturing method of the light emitting device of the embodiment of the present invention includes the following steps: the step of preparing a light source to be arranged on a substrate; the step of arranging a light beam controlling component on the substrate in a manner covering the light source; and the step of filling an adhesive into an adhesive receiving portion of the light beam controlling component and curing it.

[0237] In the step of preparing the light source to be arranged on the substrate, the substrate on which the light source is arranged in advance may be prepared, or the light source may be arranged on the substrate. In the step of arranging the light beam control component on the substrate so as to cover the light source, the light beam control component is preferably arranged relative to the light source so that the light from the light source is incident on the incident surface of the light beam control component. In addition, the light beam control component is preferably made of silicone.

[0238] The adhesive used in the process of filling the adhesive receiving portion of the light beam control component with adhesive and curing it is not particularly limited, and it is, for example, a non-silicone adhesive. Specifically, examples of non-silicone adhesives include urethane adhesives. In this process, a plurality of through-portions are filled with adhesive in such a manner that the adhesive injected from the adhesive injection port of the adhesive receiving portion on the upper surface of the flange branches at the branch portion and reaches the opening on the substrate side, and the adhesive in the adhesive receiving portion is cured and bonded to the substrate, thereby fixing the lens to the substrate. It should be noted that in the present embodiment, no adhesive is applied between the flange and the substrate (substantially no adhesive exists), and the flange is not bonded to the substrate. In the present embodiment, the flange (light beam control component) is indirectly fixed to the substrate via the cured adhesive bonded to the substrate.

[0239] When the light beam control component has a wire accommodating portion, there is a step of filling the wire accommodating portion with adhesive and curing the adhesive. When the wire accommodating portion is connected to the adhesive accommodating portion, the adhesive can be filled in the adhesive accommodating portion and the wire accommodating portion by filling the adhesive in the adhesive accommodating portion or the wire accommodating portion.

[0240] Industrial Applicability

[0241] The light emitting device and light flux controlling member of the present invention are useful for, for example, a sterilizing device that irradiates ultraviolet rays.

Claims

1. A light emitting device, characterized in that: have: substrate; A light source is disposed on the substrate; a light beam control component, comprising a flange and an adhesive receiving portion penetrating the flange, and arranged on the substrate in a manner of covering the light source; as well as The adhesive cured product is filled in the adhesive receiving portion and bonded to the substrate. In a cross section along the thickness direction of the flange, the adhesive receiving portion includes: a plurality of penetration portions extending along the thickness direction of the flange; and a first connection recess extending on the upper surface of the flange in a manner connecting the plurality of penetration portions.

2. The light emitting device according to claim 1, wherein: The adhesive receiving portion includes: a plurality of through holes extending in a thickness direction of the flange; and the first connection recess extending on an upper surface of the flange in a manner connecting the plurality of through holes.

3. The light emitting device according to claim 2, wherein: The adhesive receiving portion further includes a second connecting recess extending on a lower surface of the flange in a manner connecting the plurality of through holes.

4. The light emitting device according to claim 1, wherein: The shape of the opening of the first connection recess on the upper surface side of the flange of the adhesive receiving portion is substantially rectangular, substantially circular, substantially elliptical, or substantially trapezoidal.

5. The light emitting device according to claim 2, wherein: All of the plurality of through holes open in the first connecting recess.

6. The light emitting device according to claim 3, wherein: All of the plurality of through holes are opened in the first connecting recess and the second connecting recess.

7. The light emitting device according to claim 5, wherein: The first connection recess is arranged to surround the emission surface when the light flux controlling member is viewed in plan.

8. The light emitting device according to claim 1, wherein: In the cross section, the plurality of penetration portions include a surface inclined with respect to a thickness direction of the flange.

9. The light emitting device according to claim 1, wherein: The beam control component comprises silicone, The adhesive is a non-silicone adhesive.

10. The light emitting device according to claim 1, wherein: The light beam control component further comprises a wire accommodating portion, the wire accommodating portion being arranged on the flange and being used to accommodate an end portion of the wire arranged on the substrate. The light emitting device further includes a cured adhesive for sealing an end portion of the wire accommodated in the wire accommodating portion.

11. The light emitting device according to claim 10, wherein: The adhesive accommodating portion is communicated with the wire accommodating portion.

12. A beam control component, characterized in that: have: flange; as well as The adhesive receiving portion penetrates the flange. In a cross section along the thickness direction of the flange, the adhesive receiving portion includes: a plurality of penetration portions extending along the thickness direction of the flange; and a first connection recess extending on the upper surface of the flange in a manner connecting the plurality of penetration portions.

13. A method for manufacturing a light emitting device, the method for manufacturing a light emitting device according to any one of claims 1 to 11, characterized in that: Including the following processes: A step of preparing the light source to be disposed on the substrate; a step of disposing the light beam controlling member on the substrate so as to cover the light source; and The step of filling the adhesive containing portion of the light flux controlling member with an adhesive and curing the adhesive.

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