Light emitting module

Abstract

The present invention provides a light-emitting module, which comprises: a first light-emitting unit, which comprises a first light-emitting device, wherein the first light-emitting device has a plurality of first light-emitting portions each having a light-emitting surface and emitting light from a plurality of first light-emitting elements, a heat-dissipating surface arranged on the opposite side of the light-emitting surface, and a connecting portion located between the light-emitting surface and the heat-dissipating surface and having a wiring mounting surface for electrically connecting the plurality of first light-emitting elements, wherein the first light-emitting unit emits first light; a first optical component, which reflects the first light; a frame, which comprises a base on which the first light-emitting unit and the first optical component are arranged, and a cover surrounding the light-emitting device, wherein the light-emitting device surrounds the first light-emitting unit and the first optical component arranged on the base; and a heat sink, which is connected to the heat-dissipating surface and has a mounting surface for mounting the first light-emitting device, wherein the wiring mounting surface extends to a position above the first upper surface of the frame and a portion of the wiring mounting surface is exposed to the outside of the frame.

Description

Technical Field

[0001] The present disclosure relates to a light emitting module. Background Art

[0002] Patent document 1 discloses a light source device, which includes a light source unit having a plurality of light sources that emit light of different colors or wavelengths, and emits a synthesized light synthesized from each light source. In addition, the light source unit of patent document 1 also includes a plurality of optical parts such as a lens and a reflector, or a photodetector, etc. A light emitting module is known, which includes a light emitting element and an optical control part that controls light from the light emitting element, as exemplified by the light source unit of patent document 1, and emits desired light.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2017-183690 Summary of the invention

[0006] Problems to be solved by the invention

[0007] An object of the present disclosure is to realize a light emitting module that is easy to operate.

[0008] Technical solutions to solve problems

[0009] An embodiment discloses a light-emitting module, which comprises: a first light-emitting unit, which comprises a first light-emitting device, wherein the first light-emitting device has a plurality of first light-emitting portions each having a light emitting surface and emitting light from a plurality of first light-emitting elements, a heat dissipation surface arranged on the opposite side of the light emitting surface, and a connection portion located between the light emitting surface and the heat dissipation surface and having a wiring mounting surface for electrically connecting the plurality of first light-emitting elements, wherein the first light-emitting unit emits first light; a first optical component, which reflects the first light; a frame, which comprises a base on which the first light-emitting unit and the first optical component are arranged, and a cover surrounding the light-emitting device, wherein the light-emitting device surrounds the first light-emitting unit and the first optical component arranged on the base; and a heat sink, which is connected to the heat dissipation surface and has a mounting surface for mounting the first light-emitting device, wherein the wiring mounting surface extends to above the first upper surface of the frame and a portion is exposed to the outside of the frame.

[0010] Effects of the Invention

[0011] According to the present disclosure, it is possible to realize a light emitting module that is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a perspective view of the light emitting module according to the first embodiment.

[0013] Figure 2 It is a plan view of the light emitting module according to the first embodiment.

[0014] Figure 3 This is a perspective view of a housing in the light emitting module according to the first embodiment as viewed from a certain direction.

[0015] Figure 4 It is from Figure 3 A perspective view of the frame body in the light emitting module according to the first embodiment viewed from different directions.

[0016] Figure 5 This is a perspective view of the light emitting module according to the first embodiment with a cover portion of the housing removed.

[0017] Figure 6 It is a schematic diagram showing the arrangement of light emitting devices in the light emitting module according to the first embodiment.

[0018] Figure 7 This is a plan view of the light emitting module according to the first embodiment with the cover of the housing removed.

[0019] Figure 8 This is a plan view for explaining the optical path of light in the light emitting module according to the first embodiment.

[0020] Fig. 9 This is a side view for explaining the arrangement of the wavelength conversion member and the protection member in the light emitting module according to the first embodiment.

[0021] Fig.10 yes Figure 2 A cross-sectional view of the light emitting module at the XX section line.

[0022] Fig.11 yes Fig.10 An enlarged view of the dotted line portion in the cross-sectional view.

[0023] Fig.12 It is a perspective view of the light guide portion in the light emitting module according to the first embodiment.

[0024] Fig.13 It is a perspective view of a light emitting module according to a second embodiment.

[0025] Fig.14 It is a cross-sectional view for explaining the structure of a light detection member and a window portion in the light emitting module according to the second embodiment.

[0026] Fig.15 It is a perspective view of a light emitting module according to a third embodiment.

[0027] Fig.16 It is a plan view of a light emitting module according to a third embodiment.

[0028] Fig.17 yes Fig.16 A cross-sectional view of the light emitting module at the XVII-XVII section line.

[0029] Fig.18 yes Fig.17 An enlarged view of the dotted line portion in the cross-sectional view.

[0030] Fig.19 The light emitting module of the third embodiment includes a light detecting component. Fig.18 Magnified view of the corresponding part.

[0031] Fig. 20 It is a perspective view of a light emitting module according to a fourth embodiment.

[0032] Fig.21 It is a plan view of a light emitting module according to a fourth embodiment.

[0033] Fig. 22 It is a side view of a light emitting module according to a fourth embodiment.

[0034] Fig.23 It is a perspective view of a light emitting module according to a fifth embodiment.

[0035] Fig.24 It is a plan view of a light emitting module according to a fifth embodiment. DETAILED DESCRIPTION

[0036] In this specification or technical solution, polygons such as triangles and quadrilaterals, including shapes obtained by rounding, chamfering, corner chamfering, rounding, etc., the corners of polygons are also called polygons. In addition, not limited to corners (ends of sides), shapes obtained by processing the middle part of the sides are also called polygons. That is, shapes obtained by retaining polygons and performing partial processing are included in the interpretation of "polygons" recorded in this specification and technical solution.

[0037] In addition, it is not limited to polygons. The same applies to words that represent specific shapes such as trapezoid, circle, concave and convex. In addition, the same applies to the processing of the sides that form its shape. In other words, even if the diagonal or middle part of a side is processed, the processed part is also included in the interpretation of "side". In addition, in the case of distinguishing a "polygon" or "side" without local processing from the processed shape, it is marked as "strict", for example, it is recorded as "strict quadrilateral" and the like.

[0038] In addition, in this specification or technical solution, expressions such as up and down, left and right, front and back, front and back, front and back, etc. only describe the relationship of relative position, orientation, direction, etc., and may not be consistent with the relationship during use. For example, in a part and a finished product, even if the upper surface of the part is installed in a way that it is located on the side of the finished product, the upper surface of the part does not change.

[0039] In addition, in this specification or technical solution, when there are multiple elements corresponding to a certain component, when each is expressed to be distinguished, "first" or "second" may be added to the beginning of the component to distinguish it. In addition, when the objects or viewpoints to be distinguished in this specification and technical solution are different, the same additional note may not refer to the same object between this specification and technical solution.

[0040] For example, in this specification, there are objects that are distinguished by annotating "first", "second", and "third". When the technical scheme is described with only "first" and "third" in this specification as objects, from the perspective of easy understanding, they are sometimes distinguished by annotating "first" and "second" in the technical scheme. In this case, the objects annotated "first" and "second" in the technical scheme refer to the objects annotated "first" and "third" in this specification.

[0041] Hereinafter, with reference to the accompanying drawings, the method for implementing the present invention will be described. Among them, the method shown embodies the technical idea of ​​the present invention, but does not limit the present invention. In addition, in the following description, the same name and symbol represent the same or the same nature of the components, and sometimes the repeated description is appropriately omitted. In addition, sometimes the size or positional relationship of the components shown in each drawing is exaggerated for ease of understanding.

[0042] <First embodiment>

[0043] A light emitting module 1 according to the first embodiment will be described. Figures 1 to 12 This is a diagram for explaining an exemplary embodiment of the light emitting module 1 . Figure 1 is a perspective view of the light emitting module 1 . Figure 2 is a top view of the light emitting module 1 . Figure 3 and Figure 4 It is a perspective view of the frame body 10 in the light emitting module 1 . Figure 5 This is a perspective view of the light emitting module 1 in a state where the cover 12 of the housing 10 is removed. Figure 6 2 is a schematic diagram showing the arrangement of the light emitting devices 21 in the light emitting module 1 . Figure 7 This is a plan view of the light emitting module 1 in a state where the cover 12 of the housing 10 is removed. Figure 8 It is a plan view for explaining the light path in the light emitting module 1 . Fig. 9This is a side view for explaining the arrangement of the wavelength conversion member 26 and the protection member 27 in the light emitting module 1 . Fig.10 yes Figure 2 Cross-sectional view at the X-X section line. Fig.11 Yes Fig.10 An enlarged view of a portion of the window portion 13 surrounded by a dotted line in the cross-sectional view of FIG. Fig.12 It is a perspective view of the light guide portion 141 constituting the window portion 13 in the light emitting module 1 .

[0044] In addition, Figure 3 In the embodiment, the light guides 141 of the three windows 13 of the frame 10 are removed. Figure 5 In the perspective view of FIG. 1 , the light-transmitting member 140 of the window portion 13 of the cover portion 12 is not removed. Figure 7 In the top view of FIG. 1 , the portion of the light emitting unit 20 surrounded by the dotted line frame is shaded. Figure 8 In FIG. 1 , the light path of light is indicated by a dotted line, and for convenience of description, the light-transmitting component 140 and the three light-guiding portions 141 are described. Figure 8 In FIG. 1 , a protection area for protecting wiring formed by the protection component 27 is indicated by hatching. Fig. 9 This is a side view of the wavelength conversion member 26 and the protection member 27 disposed on the base 11 as viewed from the light emitting device 21 side in the light emitting unit 20 , with other components removed.

[0045] The light emitting module 1 has a plurality of components including a frame 10, one or more light emitting units 20, one or more optical components 30, and a heat sink 40. For example, the light emitting module 1 shown in the figure has a plurality of light emitting units 20 and a plurality of optical components 30. Specifically, the light emitting module 1 shown in the figure has three light emitting units 20 and three optical components 30.

[0046] The light emitting module 1 controls light emitted from one or more light emitting units 20 to emit to the outside. In addition, one or more light emitting units 20 are arranged inside the housing 10. Light emitted from one or more light emitting units 20 is emitted to the outside from a predetermined position of the housing 10.

[0047] In addition, one or more optical components 30 are disposed inside the housing 10. The one or more optical components 30 control the light emitted from the one or more light emitting units 20. In addition, the heat generated from the one or more light emitting units 20 is dissipated through the heat sink 40.

[0048] First, each component will be described.

[0049] (Frame 10)

[0050] The frame 10 has an upper surface, a lower surface, and a plurality of side surfaces. In addition, the frame 10 may have a plurality of upper surfaces. In the example of the light emitting module 1 shown in the figure, the frame 10 has three upper surfaces and three side surfaces.

[0051] The frame 10 has a configuration area 110 for configuring one or more components. The configuration area 110 is composed of one plane. In addition, the configuration area 110 may also be composed of multiple planes. For example, it may also have a stepped structure, and components are configured on the planes of the upper and lower sections.

[0052] The multiple sides of the frame 10 intersect with the plane having the configuration area 110 and extend upward from the plane. In addition, the multiple sides include two opposing sides (two first sides). The two first sides sandwich the configuration surface and are opposite. In addition, the multiple sides include a side (second side) connecting the two first sides. In addition, the second side can also connect the two first sides via one or more other sides.

[0053] The side surfaces of the frame 10 do not surround the entire circumference of the configuration area 110. In addition, the portion of the frame 10 where no side surfaces are provided becomes an opening (see Figure 4 The opening on the frame body 10 is disposed between the upper surface and the lower surface and between the two first side surfaces. In addition, the plurality of side surfaces may also surround the entire circumference of the configuration area 110.

[0054] In the example of the light emitting module 1 shown in the figure, the frame 10 has two first side surfaces that are opposite to each other and one second side surface that intersects the two first side surfaces with the configuration area 110. In addition, in each of the two first side surfaces, the side opposite to the side intersecting the second side surface constitutes a part of the outer edge of the opening.

[0055] The side surface intersecting with the plane having the configuration area 110 intersects with the upper surface 121 (first upper surface) on the opposite side of the side intersecting with the plane having the configuration area 110. In the example of the light emitting module 1 shown in the figure, the frame 10 has a plurality of upper surfaces including the first upper surface. The plurality of upper surfaces include an upper surface 112 (second upper surface) provided outside the configuration area 110 with the side surface as a boundary. In addition, the plurality of upper surfaces include an upper surface 123 (third upper surface) intersecting with the side surface on the opposite side of the side intersecting with the plane having the configuration area 110 and located below the first upper surface.

[0056] In the example of the light emitting module 1 shown in the figure, the first upper surface is provided between the second upper surface and the third upper surface when viewed from above. In addition, the frame 10 has an upper surface 114 (fourth upper surface) provided on the opposite side of the second upper surface relative to the first upper surface and the third upper surface when viewed from above. Therefore, the first upper surface is provided between the second upper surface and the fourth upper surface. In addition, the third upper surface is provided between the second upper surface and the fourth upper surface.

[0057] The frame 10 has a window portion 13 including an area for light to pass through. In addition, the frame 10 has a plurality of window portions 13. The plurality of window portions 13 are respectively provided on any surface constituting the frame 10. In addition, the plurality of window portions 13 are respectively provided on any side surface among the plurality of side surfaces. In addition, the window portion 13 may also be provided on the first upper surface.

[0058] In addition, a plurality of windows 13 are provided on a plurality of surfaces of the frame 10. That is, at least one window 13 is provided on the first surface of the frame 10, and at least one window 13 is provided on the second surface of the frame 10. In addition, a plurality of windows 13 may also be provided on three or more different surfaces of the frame 10. In addition, a plurality of windows 13 may also be provided on one surface of the frame 10.

[0059] The housing 10 has a surface on which two or more windows 13 are provided among the plurality of windows 13 and a surface on which only one window 13 is provided among the plurality of windows 13. The housing 10 may not have a surface on which two or more windows 13 are provided.

[0060] In the example of the light emitting module 1 shown in the figure, the frame 10 has four windows 13 as the plurality of windows 13. In addition, the plurality of windows 13 are provided on one of the two first side surfaces and the second side surface. In addition, the number of side surfaces having the windows 13 is two. In addition, only one window 13 is provided on the first side surface. In addition, two or more windows 13 are provided on the second side surface.

[0061] The plurality of windows 13 have an emission port 14 that serves as an exit for light. The plurality of windows 13 include two or more windows 13 having different areas of the emission port 14. In the example of the light emitting module 1 shown in the figure, the plurality of windows 13 include two windows 13 having different areas of the emission port 14. In addition, the window 13 provided on the first side surface has a larger area of ​​the emission port 14 than any window 13 provided on the second side surface.

[0062] The frame 10 has a surface on which one or more through holes are formed. In addition, the frame 10 has multiple surfaces on which at least one through hole is formed. Multiple through holes are formed on multiple surfaces of the frame 10. The multiple through holes correspond to the multiple window portions 13. That is, the through holes are formed on the surface on which the window portions 13 are provided (see Figure 3 ). In addition, an injection port 14 is provided in the through hole. In addition, the through hole may also be the injection port 14.

[0063] A window portion 13 is provided on each of the plurality of through holes. In addition, the through hole may also be the window portion 13 of the frame body 10. The window portion 13 is formed by, for example, closing the through hole by a light-transmitting member 140. For the light-transmitting member 140, for example, light-transmitting glass can be used. Here, light-transmitting means having a transmittance of 90% or more with respect to visible light or light of a specific wavelength range (color) in visible light.

[0064] In addition, for example, the window portion 13 is formed by embedding a light guide portion 141 having a light guide path into the through hole. The light guide portion 141 is composed of, for example, a light guide member 142, a connecting member 143, and a filter 144 (for the light guide portion 141, refer in particular to Figure 7 ).

[0065] The light guide member 142 has a light guide path for light to pass through. The light guide path is, for example, a hollow space. The incident surface and the emission surface of the light in the light guide path are smaller than the through hole. The emission surface of the light guide path becomes the emission port 14 of the window portion 13 or is connected to the emission port 14.

[0066] The connection member 143 holds the light guide member 142 and is connected to the surface where the through hole is formed. For the connection, screws, adhesives, etc. can be used.

[0067] The optical filter 144 transmits or blocks light in a predetermined wavelength range. By providing the optical filter 144 , the wavelength range of light that can be emitted from the emission port 14 can be limited.

[0068] In addition, a connection hole 15 is formed in the frame 10. The connection hole 15 is formed on the first upper surface. In the example of the light emitting module 1 shown in the figure, the connection hole 15 is provided at a position close to the third upper surface. In addition, when viewed from above, one side of the distance from the third upper surface to the connection hole 15 is shorter than the distance from the second upper surface to the connection hole 15. In addition, the window portion 13 provided on the first side surface is provided at a position close to the second side surface.

[0069] The frame 10 is formed by connecting parts including a base 11 and a cover 12. The base 11 has a configuration area 110. In addition, the base 11 has a lower surface. The cover 12 has a plurality of side surfaces intersecting with the configuration area 110, and a first upper surface. In addition, the cover 12 has a plurality of windows 13. In addition, a connection hole 15 is formed in the cover 12. In the example of the light emitting module 1 shown in the figure, the base 11 also has a second upper surface. In addition, the base 11 also has a fourth upper surface. The cover 12 has a third upper surface.

[0070] Each surface of the frame 10 can be formed by using a metal such as aluminum as a main material. Each surface of the frame 10, except for the emission port 14 of the window portion 13, is formed by a material having a light-shielding property. Having a light-shielding property means that the transmittance relative to visible light is limited to less than 5.0%. In addition, a material other than a metal can also be used as a main material. In addition, it is also possible to have a light-shielding property by performing a surface treatment.

[0071] (Light emitting unit 20)

[0072] The light emitting unit 20 is a unit having one or more light emitting elements and composed of one or more components including the light emitting elements. For example, the light emitting unit 20 may be composed of a wavelength conversion component 26 in addition to the light emitting element. In addition, for example, the light emitting unit 20 may be composed of an optical component in addition to the light emitting element.

[0073] The light emitting unit 20 is a unit for emitting light in a specific wavelength range. The light in the specific wavelength range is included in the wavelength range of light emitted from the light emitting element, for example. Also, for example, it is included in the wavelength range of light converted and emitted by the wavelength conversion component based on the light from the light emitting element.

[0074] The light in the specific wavelength range includes the light of the peak wavelength emitted from the light emitting unit 20. In addition, when the light in the specific wavelength range is included in the light emitted from the light emitting element, the peak wavelength of the light emitted from the light emitting element is included in the specific wavelength range. In the case where the light in the specific wavelength range is light converted and emitted in a wavelength conversion component, the peak wavelength of the light converted and emitted in the wavelength conversion component is included in the specific wavelength range.

[0075] In addition, the light emitting unit 20 can be configured with an optical component 24. The optical component 24 is, for example, a condenser lens. In addition, the light emitting unit 20 can be configured with an optical component 28. The optical component 28 is, for example, a collimator lens. In addition, the light emitting unit 20 can be configured with an optical component 25. The optical component 25 is, for example, a diffuser.

[0076] The light emitting unit 20 may be configured with a plurality of optical components. In addition, the plurality of optical components include the optical component 24, the optical component 28, or the optical component 25. In addition, optical components other than these may also be included. In addition, some or all of these optical components may not be included.

[0077] For example, the light emitting unit 20 can be configured to include a plurality of light emitting elements, a condenser lens (optical component 24) for condensing light emitted from the plurality of light emitting elements, a diffuser plate (optical component 25) for diffusing the condensed light, and a collimator lens (optical component 28) for collimating the diffused light. With such a structure, the light emitting unit 20 can emit collimated light by condensing light emitted from the plurality of light emitting elements.

[0078] In addition, for example, the light emitting unit 20 can be configured to include a plurality of light emitting elements, a condenser lens (optical component 24) for condensing light emitted from the plurality of light emitting elements, a wavelength conversion component 26 for incident condensed light, and a collimator lens (optical component 28) for collimating light emitted from the wavelength conversion component 26. With such a configuration, the light emitting unit 20 can emit collimated light of the light emitted from the wavelength conversion component 26.

[0079] In addition, the light emitting unit 20 can be configured with one or more light emitting devices 21 equipped with a plurality of light emitting elements. In addition, the light emitting device 21 has one or more light emitting parts 22 that emit light from the plurality of light emitting elements to the outside. In addition, the light emitting device 21 has a connection part 23 electrically connected to the plurality of light emitting elements.

[0080] The light emitting portion 22 has a light emitting surface from which light is emitted. The light emitting surfaces of one or more light emitting portions 22 are installed facing the same direction. The light emitting device 21 has a first mounting surface on which one or more light emitting portions 22 are mounted and a second mounting surface on the opposite side of the first mounting surface. The first mounting surface is a surface facing the same direction as the light emitting surface of the light emitting portion 22. The second mounting surface is a surface facing the opposite direction to the light emitting surface of the light emitting portion 22. The second mounting surface is a surface provided on the opposite side of the light emitting surface of the light emitting portion 22.

[0081] The connection portion 23 has a first surface provided with a wiring area for wiring and a second surface opposite to the first surface. The first surface of the connection portion 23 is located between the light emitting surface and the second mounting surface. In addition, the first surface of the connection portion 23 is located between the first mounting surface and the second mounting surface.

[0082] In the example of the light emitting module 1 shown in the figure, the light emitting unit 20 has a plurality of light emitting devices 21. In addition, each light emitting device 21 has a plurality of light emitting sections 22. In addition, the plurality of light emitting sections 22 are arranged in a matrix. In one light emitting unit 20, two light emitting devices 21 having light emitting sections 22 in 4 rows and 2 columns are arranged in a row, and the light emitting sections 22 in 4 rows and 4 columns are arranged.

[0083] As the light emitting element, a semiconductor laser element is used. In addition, LED, organic EL, etc. may also be used. For example, the light emitting element can use light whose peak wavelength is in the range of 365nm to 494nm. In addition, light with a peak wavelength outside this range may also be used. In addition, it may not be limited to the wavelength range of visible light. For example, it may also be light with a peak wavelength in the wavelength range of ultraviolet light.

[0084] For example, the plurality of light emitting elements include a light emitting element that emits blue light. Also, for example, the plurality of light emitting elements include a light emitting element that emits purple light. In addition, the plurality of light emitting elements may also emit light of a color other than these.

[0085] All light emitting elements included in one light emitting unit 20 emit light of the same color. When the light emitting module 1 includes a plurality of light emitting units 20, the plurality of light emitting units 20 may include two or more light emitting units 20 that emit light of different colors.

[0086] Here, blue light refers to light whose emission peak wavelength is within the range of 430nm to 494nm. Purple light refers to light whose emission peak wavelength is within the range of 365nm to 430nm. As a light-emitting element that emits blue light and purple light, a semiconductor laser element including a nitride semiconductor can be cited. As a nitride semiconductor, for example, GaN, InGaN and AlGaN can be used.

[0087] The wavelength conversion member 26 emits light of a different wavelength based on a part or all of the light of a predetermined wavelength incident on the wavelength conversion member 26. That is, only a part of the light of a predetermined wavelength incident on the wavelength conversion member 26 is emitted from the wavelength conversion member 26, or none of the light is emitted. In addition, by the incidence of the light of a predetermined wavelength, the wavelength conversion member 26 emits light of a wavelength different from the wavelength of the incident light.

[0088] The wavelength conversion member 26 includes, for example, a phosphor. For the phosphor, for example, a garnet-based phosphor such as YAG or LAG can be used. In addition, other phosphors can also be used.

[0089] In addition, the wavelength conversion member 26 can be configured to include a wavelength conversion unit 261 and a conversion control unit 262. The wavelength conversion unit 261 emits light converted into a different wavelength. The conversion control unit 262 controls the operation of the wavelength conversion unit 261 or the wavelength conversion effect performed by the wavelength conversion unit 261. The wavelength conversion unit 261 is connected to the conversion control unit 262.

[0090] The wavelength conversion unit 261 includes, for example, a phosphor. For example, a phosphor wheel or a phosphor plate can be used for the wavelength conversion unit 261. For example, a motor for controlling the rotation of the phosphor wheel, a shutter for controlling the incidence of light on the phosphor plate, etc. can be used for the conversion control unit 262. By rotating the phosphor wheel, the heat of the phosphor caused by the irradiation of light can be dispersed, and the deterioration can be reduced.

[0091] The conversion control unit 262 is operated by being supplied with electric power. Therefore, it has a connection unit for electrically connecting to an external power source. In the example of the light emitting module 1 shown in the figure, a fluorescent wheel is used as the wavelength conversion unit 261, and a motor for rotating the wheel is used as the conversion control unit 262.

[0092] In addition, the light emitting unit 20 can be configured to include a protective member 27. The protective member 27 is disposed near the wavelength conversion member 26. In addition, the protective member 27 includes a connection portion 271 connected to the wavelength conversion member 26. In addition, the protective member 27 is connected to the conversion control unit 262. The protective member 27 is connected to the conversion control unit 262 on the surface of the conversion control unit 262 opposite to the surface connected to the wavelength conversion unit 261.

[0093] The protection member 27 is disposed near the wavelength conversion unit 261 at a position that does not contact the wavelength conversion unit 261. The protection member 27 has a protection portion 272 extending from a position connected to the conversion control unit 262 toward the wavelength conversion unit 261. The protection portion 272 has a structure in which a flat plate is bent at an intermediate position. The front end of the protection portion 272 is disposed at a position closest to the wavelength conversion unit 261.

[0094] By providing the protective member 27, it is possible to protect the light incident on the wavelength conversion unit 261 from the influence of the wiring, so that the light advancing toward the wavelength conversion unit 261 is not blocked by the wiring connected to the connection portion of the conversion control unit 262. Examples of wiring becoming an obstacle to wavelength conversion include contact of the wiring with the wavelength conversion unit 261, and arrangement of the wiring on the optical path of the light.

[0095] (Optical component 30)

[0096] The optical component 30 has a high reflectivity with respect to light in a predetermined wavelength range. The high reflectivity here refers to, for example, a reflectivity of 95% or more. Alternatively, it can be said that the optical component 30 has a transmittance of less than 5% with respect to light in a predetermined wavelength range.

[0097] The optical component 30 has a high transmittance for light in a wavelength range different from the wavelength range having a high reflectance. The high transmittance here refers to a transmittance of 90% or more, for example. The optical component 30 is, for example, a dichroic mirror.

[0098] (Radiator 40)

[0099] The heat sink 40 has an upper surface, a lower surface, and a side surface. In addition, the heat sink 40 has a mounting surface for mounting a heat source. Any of the upper surface, the lower surface, or the side surface can be set as the mounting surface. The heat sink 40 dissipates heat generated by the heat source mounted on the mounting surface to the outside of the light emitting module.

[0100] In addition, the heat sink 40 may also have one or more side surfaces. In the example of the light emitting module 1 shown in the figure, the heat sink 40 has a rectangular parallelepiped shape.

[0101] (Light emitting module 1)

[0102] Next, the light emitting module 1 is described. One or more light emitting units 20 are arranged in the arrangement area 110 of the frame 10. In addition, one or more optical components 30 are arranged in the arrangement area 110 of the frame 10. In addition, the heat sink 40 is arranged near an opening formed in a part of the frame 10. Alternatively, the heat sink 40 may be arranged near the opening in a state of closing the opening.

[0103] In the example of the light emitting module 1 shown in the figure, a plurality of light emitting units 20 are arranged in an arrangement area 110 in the base 11 of the frame 10. A plurality of optical components 30 are arranged in the arrangement area 110 in the base 11 of the frame 10. The heat sink 40 is arranged on the fourth upper surface of the base 11 of the frame 10. In addition, the cover 12 of the frame 10 and the heat sink 40 are arranged side by side in a plan view. The side surface of the heat sink 40 is provided near the opening of the frame 10.

[0104] The frame 10 surrounds one or more light emitting units 20. In addition, the frame 10 surrounds one or more optical components 30. The upper surface of the frame 10 is set directly above the one or more light emitting units 20. In addition, the upper surface of the frame 10 is set directly above the one or more optical components 30. In addition, a part of the one or more light emitting units 20 may also be exposed from the opening. In other words, there may be no upper surface of the frame 10 directly above the part.

[0105] One or more light emitting units 20 are surrounded by the lower surface and multiple side surfaces of the frame 10. In addition, one or more light emitting units 20 are arranged between the upper surface and the lower surface of the frame 10, between the two first side surfaces of the frame 10, and between the second side surface of the frame 10 and the side surface of the heat sink 40. In this paragraph, even if "one or more light emitting units 20" is replaced with "one or more optical components 30", it can be said to be the same.

[0106] In the example of the light emitting module 1 shown in the figure, the plurality of light emitting units 20 are arranged from one first side surface to another first side surface. In addition, the plurality of optical components 30 are arranged in the arrangement area 110 in the base 11 of the frame 10. In addition, the plurality of optical components 30 are arranged from one first side surface to another first side surface.

[0107] One or more light emitting devices 21 of the light emitting unit 20 are mounted on the mounting surface of the heat sink 40 . Therefore, the light emitting device 21 mounted on the mounting surface of the heat sink 40 is disposed in the disposition region 110 of the frame 10 .

[0108] The second mounting surface of the light emitting device 21 is connected to the mounting surface of the heat sink 40. The second mounting surface becomes a heat dissipation surface for dissipating heat generated by the light emitting element of the light emitting device 21 to the heat sink. The second mounting surface may be directly connected to the mounting surface of the heat sink 40, or may be connected via other components. In the case of being connected via other components, it is preferable to consider that the heat dissipation effect is not significantly impaired thereby.

[0109] One or more light emitting elements 21 are mounted so as not to protrude from the mounting surface of the heat sink 40 when viewed from above in parallel with the mounting surface of the heat sink 40. The outer edge of the second mounting surface of the light emitting element 21 is within the outer edge of the mounting surface of the heat sink 40. This can improve the heat dissipation effect.

[0110] In the example of the light emitting module 1 shown in the figure, the side surface of the heat sink 40 disposed near the opening becomes the mounting surface for mounting the heat source. In addition, the plurality of light emitting devices 21 are mounted on the mounting surface of the heat sink 40. In addition, the plurality of light emitting devices 21 included in the plurality of light emitting units 20 are all mounted on the mounting surface of the heat sink 40. Each light emitting device 21 emits light from the plurality of light emitting portions 22 toward the second side surface of the frame 10.

[0111] The connection portion 23 of the one or more light-emitting devices 21 of the light-emitting module 1 extends to the upper side of the third upper surface of the frame 10, and a part of the connection portion 23 is exposed to the outside of the frame 10. In addition, the connection portion 23 extends from the lower side to the upper side of the third upper surface of the frame 10. That is, a part of the connection portion 23 protrudes from the third upper surface of the frame 10. By exposing the connection portion 23, connection with external wiring can be performed. The external wiring is connected to the first surface of the connection portion 23, for example. The first surface of the connection portion 23 can be referred to as a wiring mounting surface for electrically connecting the one or more light-emitting elements 21.

[0112] In addition, the connection portion 23 is arranged below the first upper surface of the frame 10. That is, the connection portion 23 does not extend above the first upper surface of the frame 10. By providing a third upper surface lower than the first upper surface on the frame 10 and exposing the connection portion 23 between the first upper surface and the third upper surface, the connection portion 23 can be protected. For example, even if a flat surface of another module is arranged on the first upper surface of the light emitting module 1, contact between the other module and the connection portion 23 can be avoided, and an easy-to-operate light emitting module 1 can be realized.

[0113] In addition, the connection portion 23 is arranged below the upper surface of the heat sink 40. That is, the connection portion 23 does not extend above the upper surface of the heat sink 40. For example, even if the flat surface of the other module is arranged on the first upper surface of the frame 10 and the upper surface of the heat sink 40, the contact between the other module and the connection portion 23 can be avoided. In addition, the height of the first upper surface of the frame 10 and the height of the upper surface of the heat sink 40 are equal. In the case where the flat surface of the other module is arranged on the first upper surface of the frame 10 and the upper surface of the heat sink 40, the arrangement of the other module is stable.

[0114] In the example of the light emitting module 1 shown in the figure, the plurality of light emitting units 20 include a light emitting unit 20 having a wavelength conversion member 26. In such a light emitting unit 20, light subjected to wavelength conversion by the wavelength conversion member 26 becomes light of a specific wavelength range emitted from the light emitting unit 20. In this case, light from the light emitting element that is not included in the wavelength range of the light subjected to wavelength conversion does not become light of the specific wavelength range.

[0115] For example, the illustrated light-emitting module 1 includes a light-emitting unit 20 including one or more light-emitting elements that emit light with a peak wavelength in the range of 430 nm to 494 nm and a wavelength conversion component 26 as such a light-emitting unit 20. The one or more light-emitting elements emit light with a peak wavelength in the range of 430 nm to 494 nm, and the wavelength conversion component 26 includes a YAG phosphor. In addition, the light-emitting unit 20 includes one or more light-emitting devices 21 that emit light with a peak wavelength in the range of 430 nm to 494 nm and a wavelength conversion component 26 includes a YAG phosphor.

[0116] In addition, for example, the light-emitting module 1 shown in the figure has a light-emitting unit 20 having one or more light-emitting elements and a wavelength conversion component 26 as such a light-emitting unit 20, wherein the one or more light-emitting elements emit light with a peak wavelength in the range of 430nm to 494nm, and the wavelength conversion component 26 has a LAG phosphor. In addition, the light-emitting unit 20 has one or more light-emitting devices 21 and a wavelength conversion component 26, wherein the one or more light-emitting devices 21 emit light with a peak wavelength in the range of 430nm to 494nm, and the wavelength conversion component 26 has a LAG phosphor.

[0117] In the example of the light emitting module 1 shown in the figure, the plurality of light emitting units 20 include a light emitting unit 20 that emits only light from one or more light emitting devices 21. In such a light emitting unit 20, the light emitted from the one or more light emitting devices 21 becomes light of a specific wavelength range emitted from the light emitting unit 20.

[0118] For example, the light emitting module 1 shown in the figure includes a light emitting unit 20 having one or more light emitting elements that emit light with a peak emission wavelength in the range of 365nm to 430nm as such a light emitting unit 20. In addition, the light emitting unit 20 includes one or more light emitting devices 21 that emit light with a peak emission wavelength in the range of 365nm to 430nm. In addition, there is no component corresponding to the wavelength conversion member 26.

[0119] For example, when a wavelength conversion member such as a phosphor is used to generate light emitted from the light emitting device 21, the wavelength conversion member is not a component equivalent to the wavelength conversion member 26. In other words, even if the light emitting device 21 has a wavelength conversion member as a component, it does not have a component equivalent to the wavelength conversion member 26.

[0120] In addition, when the light emitting module 1 includes a plurality of light emitting units 20, the peak wavelength of light in a specific wavelength range emitted from each of the plurality of light emitting units 20 is different. For example, when the plurality of light emitting units 20 include two light emitting units 20 (a first light emitting unit 20 and a second light emitting unit 20), the peak wavelength of light (first light) emitted from the first light emitting unit 20 and the peak wavelength of light (second light) emitted from the second light emitting unit 20 are different from each other.

[0121] In addition, when the light emitting module 1 has a plurality of light emitting units 20, the plurality of light emitting units 20 may include two or more light emitting units 20 that emit light of the same peak wavelength. In addition, the plurality of light emitting units 20 may include two or more light emitting units 20 that emit light of the same wavelength range. In addition, the plurality of light emitting units 20 may include two or more light emitting units 20 that emit light of the same specific wavelength range.

[0122] For example, the light emitting module 1 shown in the figure has three light emitting units 20, each of which emits light with different peak wavelengths. In addition, two light emitting units 20 share a wavelength conversion component 26. Two wavelength conversion regions for converting light into different wavelengths are provided on the wavelength conversion component 26. The two light emitting units 20 respectively allow light from the light emitting device 21 to enter different wavelength conversion regions.

[0123] In the wavelength conversion component 26 shared by two light emitting units 20, the wavelength conversion portion 261 is set from a position where light emitted from the light emitting device 21 of one of the two light emitting units 20 is incident to a position where light emitted from the light emitting device 21 of the other light emitting unit 20 is incident.

[0124] In addition, when viewed from above, the conversion control unit 262 and the protective component 27 are arranged between a straight line that passes through a position where light emitted from the light-emitting device 21 of one of the two light-emitting units 20 is incident on the wavelength conversion unit 261 and advances in a direction (first direction) perpendicular to the incident surface of the light in the wavelength conversion unit 261, and a straight line that passes through a position where light emitted from the light-emitting device 21 of the other light-emitting unit 20 is incident on the wavelength conversion unit 261 and advances in the first direction.

[0125] In the example of the light emitting module 1 shown in the figure, in the light emitting unit 20 having the wavelength conversion member 26, light emitted from the plurality of light emitting sections 22 and focused by the focusing lens (optical member 24) enters the wavelength conversion section 261. The protection member 27 is disposed at a position closer to the conversion control section 262 than the light emitted from the light emitting section 22 closest to the conversion control section 262 until the light is emitted from the focusing lens and enters the wavelength conversion section 261. Thus, it is possible to prevent the protection member 27 from becoming an obstacle to the light path.

[0126] The protective member 27 has a protective portion 272 which moves away from the conversion control unit 262 in a direction (second direction) parallel to the incident surface of light in the wavelength converter 261 as it moves from the condenser lens toward the wavelength converter 261 in a plan view.

[0127] When viewed from above, the angle formed by the second direction and the protection part 272 is equal to or smaller than the angle formed by the second direction and the direction in which the light emitted from the light emitting part 22 closest to the conversion control part 262 advances from the condenser lens to the wavelength conversion part 261. In addition, all angles are acute angles. With such a protection part 272, it is possible to avoid the wiring connected to the conversion control part 262 from becoming an obstacle to the optical path.

[0128] In addition, the difference between the two angles is preferably not less than 1 degree and not more than 25 degrees. With such a protection portion 272, the distance between the light emitted from the light emitting portion 22 and the protection portion 272 increases as it moves from the focusing lens toward the wavelength conversion portion 261, thereby avoiding interference of light caused by the protection portion 272. In addition, the area for protecting the wiring can be fully ensured.

[0129] The wiring connected to the conversion control unit 262 is connected to the conversion control unit 262, and then leads to the connection hole 15 to the outside of the frame 10. At this time, when viewed from above, the wiring from the conversion control unit 262 to the connection hole 15 passes through the protection area ( Figure 8 In addition, the protective member 27 protects the wiring to a sufficient height through the protective portion 272 (see Fig. 9 ). Thus, the wiring can be directed toward the connection hole 15 without blocking light. Thus, the wiring is prevented from becoming an obstacle to light, and the wavelength conversion component 26 can receive power supply from an external power source.

[0130] In a light-emitting unit 20 having a light-emitting device 21 having a plurality of light-emitting portions 22, a focusing lens (optical component 24), a wavelength conversion component 26, and a collimating lens (optical component 28), the wavelength conversion component 26 is disposed between the focusing lens and the collimating lens. In addition, the wavelength conversion component 26 is disposed at a position closer to the collimating lens than the focusing lens. In addition, the wavelength conversion component 26 is preferably disposed near the collimating lens. Since the wavelength-converted light is emitted from the wavelength conversion component 26 at a large angle range, collimated light with a small spot diameter can be obtained by approaching the collimating lens. As a result, when the same amount of light is collimated, the area of ​​the lens surface of the collimating lens can be designed to be small.

[0131] In the configuration area 110 of the frame 10, one light emitting unit 20 and one optical component 30 are correspondingly configured. The same number or more than the number of optical components 30 as the light emitting units 20 are configured in the light emitting module 1. One or more light emitting units 20 emit light toward the direction of the second side surface. Therefore, one or more optical components 30 are respectively configured at a position closer to the second side surface than the corresponding light emitting unit 20.

[0132] Light emitted from one light emitting unit 20 is incident on a corresponding optical component 30. In addition, light in a specific wavelength range emitted from one light emitting unit 20 is incident on a corresponding optical component 30. In the example of the light emitting module 1 shown in the figure, the light in the specific wavelength range emitted from the light emitting unit 20 is incident on the corresponding optical component 30 in a collimated state.

[0133] One optical component 30 reflects light of a specific wavelength range emitted from a corresponding one light emitting unit 20 toward the second side surface. The reflected light travels toward a first side surface of the two first side surfaces of the frame 10. In addition, one optical component 30 transmits a portion of the light of the specific wavelength range. The transmitted light travels toward the second side surface of the frame 10.

[0134] The light emitting module 1 has an optical member 30 having a high reflectivity over the entire specific wavelength range with respect to light in the specific wavelength range from a corresponding one of the light emitting units 20. In this case, the ratio of reflection and transmission with respect to light in the specific wavelength range is the reflectivity and transmittance.

[0135] When the wavelength range of the spectrum of light emitted from the light emitting unit 20 is narrow, reflected light and transmitted light can be generated by the optical component 30 having such characteristics. In the example of the light emitting module 1 shown in the figure, the optical component 30 having such characteristics is applied to the optical component 30 corresponding to the light emitting unit 20 without the wavelength conversion component 26, in other words, the light emitting unit 20 that emits only light from one or more light emitting devices 21. For example, more than 98% of the light in a specific wavelength range from the light emitting unit 20 is reflected by the corresponding optical component 30.

[0136] In addition, the light emitting module 1 includes an optical component 30 having a high reflectivity in a part of the specific wavelength range and a high transmittance in the other part with respect to the light in the specific wavelength range from the corresponding one light emitting unit 20. In this case, the ratio of the amount of light reflected to the amount of light in the entire specific wavelength range and the ratio of the amount of light transmitted to the amount of light in the entire specific wavelength range affect the ratio of the amount of light in the wavelength range having a high reflectivity and the amount of light in the wavelength range having a high transmittance.

[0137] In the case where the wavelength range of the spectrum of light emitted from the light emitting unit 20 is wide, reflected light and transmitted light can be generated in this way. In the example of the light emitting module 1 shown in the figure, the optical component 30 corresponding to the light emitting unit 20 having the wavelength conversion component 26, in other words, the light emitting unit 20 that emits light whose wavelength is converted by the wavelength conversion component 26, is applied.

[0138] The plurality of windows 13 included in the housing 10 of the light emitting module 1 include two windows 13 for extracting each of two lights that are separated by the optical member 30 and travel in different directions from the light emitted from the light emitting unit 20 .

[0139] In the light emitting module 1, light reflected by one or more optical components 30 is emitted from any one of the plurality of windows 13 of the frame 10 to the outside of the frame 10. In the example of the light emitting module 1 shown in the figure, light reflected by the optical component 30 is emitted from the window 13 provided on one first side surface of the two first side surfaces of the frame 10.

[0140] In addition, in the light emitting module 1, light transmitted by one or more optical components 30 is emitted from any one of the plurality of windows 13 of the frame 10 to the outside of the frame 10. In the example of the light emitting module 1 shown in the figure, light transmitted by the optical component 30 is emitted from the window 13 provided on the second side surface of the frame 10.

[0141] When the light-emitting module 1 has a plurality of light-emitting units 20 and a plurality of optical components 30 corresponding thereto, the plurality of lights emitted from the plurality of light-emitting units 20 travel in a prescribed direction (third direction) via the corresponding optical components 30, and are emitted from a window portion 13 (first window portion) of the frame body 10 to the outside of the frame body 10.

[0142] Therefore, the plurality of windows 13 include a first window for taking out the light (first light and second light) emitted from the two light emitting units 20 (first light emitting unit and second light emitting unit). In addition, the plurality of windows 13 include a first window for taking out the first light and the second light traveling in a predetermined direction via two optical components 30 (first optical component and second optical component) corresponding to the first light emitting unit and the second light emitting unit.

[0143] Furthermore, the plurality of lights emitted from the plurality of light emitting units 20 travel in a predetermined direction different from the third direction via the corresponding optical components 30 , and are emitted to the outside of the housing 10 from different windows 13 of the housing 10 .

[0144] Therefore, the plurality of windows 13 include two windows 13 different from the first window, one of the two windows 13 (second windows) extracts the first light, and the other extracts the second light. In addition, the plurality of windows 13 include two second windows, one of the two second windows extracts the first light traveling in a predetermined direction different from the third direction via a first optical component corresponding to the first light emitting unit, and the other extracts the second light traveling in a predetermined direction different from the third direction via a second optical component corresponding to the second light emitting unit.

[0145] In the example of the light emitting module 1 shown in the figure, the light emitted from the three light emitting units 20 is reflected by the corresponding optical component 30 and taken out from the first window. In addition, the light emitted from the three light emitting units 20 is transmitted through the corresponding optical component 30 and taken out from different windows 13.

[0146] The multiple lights emitted from the multiple light emitting units 20 and emitted from the first window portion to the outside become synthesized lights, and are emitted from the first window portion to the outside of the housing 10. In addition, the multiple lights emitted from the multiple light emitting units 20 become synthesized lights passing through the same axis, and are taken out from the first window portion. Thus, the synthesized lights emitted from the multiple light emitting units 20 and the light emitted from one light emitting unit 20 can be taken out separately from different windows 13.

[0147] Thus, by providing the window 13 for emitting individual lights separately from the window 13 for emitting the combined light, the combined light and the individual lights can be easily processed separately outside the light emitting module 1. The light controlled in the light emitting module 1 can be easily used from outside the light emitting module 1.

[0148] Light in a specific wavelength range from a light emitting unit 20 located farther from the first window is reflected by the corresponding optical component 30 and passes through the optical component 30 corresponding to the light emitting unit 20 located closer to the first window. Synthesized light can be generated in this way.

[0149] The first window portion for collectively extracting the plurality of lights emitted from the plurality of light emitting units 20 and the two or more second windows portion for individually extracting the plurality of lights emitted from the plurality of light emitting units 20 are provided on different surfaces of the housing 10 .

[0150] In the light emitting module 1, the first window is provided on the first surface of the frame 10, and two or more second windows are provided on the second surface of the frame 10. In the example of the light emitting module 1 shown in the figure, the first window is provided on one of the two first side surfaces of the frame 10, and three second windows are provided on the second side surface of the frame 10. By taking out from different surfaces, it is possible to suppress mutual interference between the synthesized light and the light emitted from one light emitting unit 20.

[0151] The light-emitting module 1 has an optical component 30 having high reflectivity in the entire wavelength range of light in a specific wavelength range emitted from the corresponding light-emitting unit 20, and an optical component 30 having high reflectivity in a part of the wavelength range of light in the specific wavelength range emitted from a corresponding light-emitting unit 20 and high transmittance in other parts of the wavelength range.

[0152] Therefore, even if the light emitting unit 20 emitting light in a specific narrow wavelength range and the light emitting unit 20 emitting light in a specific wide wavelength range are mixed, it is possible to use optical components 30 with different characteristics corresponding to the size of the wavelength range to separate the reflected light and the transmitted light.

[0153] The light that has passed through the filter 144 among the light incident on the second window is emitted from the emission port 14 to the outside of the light emitting module 1. The filter 144 in the second window allows only the light of a specific wavelength range among the light emitted from the light emitting unit 20 corresponding to the second window to pass through. In addition, only a part of the light of the specific wavelength range is allowed to pass through. In this way, by having the filter 144 in the second window, the light of the desired wavelength range among the light emitted from the light emitting unit 20 can be extracted from the second window.

[0154] For example, the light emitted from the light emitting unit 20 having the wavelength conversion member 26 includes the light emitted from the light emitting device and the light converted in wavelength by the wavelength conversion member 26. In this case, the specific wavelength range is the wavelength range of the light converted in wavelength by the wavelength conversion member 26. If the light emitted from the light emitting element is not included in the wavelength range, the light emitted from the light emitting element is not included in the light in the specific wavelength range. Therefore, the light emitted from the light emitting element does not pass through the filter 144 and is not emitted from the second window portion.

[0155] <Second embodiment>

[0156] Next, a light emitting module 2 according to a second embodiment will be described. Fig.13 and Fig.14 This is a diagram for explaining an exemplary embodiment of the light emitting module 2 . Fig.13 is a perspective view of the light emitting module 2 . Fig.14 2 is a cross-sectional view for explaining the structure of the light detection component 50 and the window portion 13 of the light emitting module 2. Fig.14 Amplified by Fig.10 The dotted line encloses the same range.

[0157] In the second embodiment, in a light emitting module having a plurality of windows 13, an example of how to utilize light taken out from the plurality of windows 13 is shown. That is, a method of utilizing each light controlled in the light emitting module 1 outside the light emitting module 1 is shown. The light emitting module 2 has one or more light detecting components 50, and the light emitted from the one or more windows 13 is detected by the light detecting components 50.

[0158] The light emitting module 2 of the second embodiment is different from the light emitting module of the above-described embodiment in that it includes a light detecting member 50. In addition, the same structure as that of the light emitting module of the above-described embodiment can be adopted.

[0159] (Light Detection Component 50)

[0160] The light detecting component 50 has a light receiving element 51. In addition, the light detecting component 50 has a connecting component 52. The light receiving element 51 converts the irradiated light into an electrical signal. The strength of the converted electrical signal corresponds to the strength of the irradiated light. For example, a photodiode can be used for the light receiving element 51.

[0161] The connecting member 52 fixes the light receiving element 51 at a predetermined position. The connecting member 52 has a mounting surface on which the light receiving element 51 is mounted. The light receiving element 51 is mounted on the mounting surface of the connecting member 52.

[0162] (Light emitting module 2)

[0163] In the light emitting module 2, the light detecting component 50 is arranged on the opposite side of the light emitting unit 20, with the surface of the housing 10 provided with the window 13 as a boundary. The window 13 through which the light passes is provided between the light detecting component 50 and the light emitting unit 20 that emits the light detected by the light detecting component 50. In the example of the light emitting module 2 shown in the figure, a second side surface is provided between the light detecting component 50 and the light emitting unit 20.

[0164] That is, the light emitting module 2 of the second embodiment can be manufactured by attaching the light detecting component 50 after manufacturing the light emitting module 1 of the first embodiment. In addition, the post-installed parts are not limited to the light detecting component 50.

[0165] In addition, for example, when the light emitted to the outside of the housing 10 through the window 13 is not used, the light may be shielded by a shading plate instead of using the light detection component 50. In this way, it is possible to add components according to how to use or not use the light emitted from the window 13, and realize the light emitting module 2 corresponding to the method of use.

[0166] The light emitting module 1 can be easily used to form a light shading plate-mounted light emitting module or light emitting module 2. The light emitting module 2 has a light detection function and can easily control the output of each light, so it can be easily used.

[0167] The connecting component 52 of the light detecting component 50 is connected to the frame 10. In addition, the connecting component 52 is connected to the cover portion 12 of the frame 10. In addition, the connecting component 52 is connected to the window portion 13 of the frame 10. By directly connecting to the window portion 13, the positional accuracy relative to the window portion 13 can be improved. In addition, the connecting component 52 can also be connected to other positions of the frame 10, such as the second upper surface.

[0168] In the light emitting module 2, the light receiving elements 51 of the plurality of light detecting components 50 receive the light taken out from the different window portions 13. In addition, the plurality of light detecting components 50 are connected to the different window portions 13. In the example of the light emitting module 2 shown in the figure, the light detecting component 50 is connected to each of the plurality of second window portions. Thus, the light emitted from the plurality of light emitting units 20 can be detected individually.

[0169] The light receiving element 51 of the light detecting member 50 is arranged opposite to the emission port 14 of the window portion 13. The light emitted from the emission port 14 of the window portion 13 is irradiated to the light receiving element 51. In the example of the light emitting module 1 shown in the figure, the area of ​​the light receiving surface of the light receiving element 51 is smaller than the area of ​​the emission port 14 of the window portion 13.

[0170] In addition, the area of ​​the light receiving surface of the light receiving element 51 may be the same as the area of ​​the emission port 14 of the window portion 13, or may be larger than the area of ​​the emission port 14 of the window portion 13. As far as the light receiving element 51 is concerned, the larger the area of ​​the light receiving surface is, the more light can be received in a wider range. On the other hand, as far as the light receiving element 51 is concerned, the smaller the area of ​​the light receiving surface is, the faster the response speed can be obtained. In the example of the light emitting module 1 shown in the figure, there is an advantage in the response speed compared to the amount of light received.

[0171] <Third Embodiment>

[0172] Next, a light emitting module 3 according to a third embodiment will be described. Figure 15 to Figure 19 This is a diagram for explaining an exemplary embodiment of the light emitting module 3 . Fig.15 It is a perspective view of the light emitting module 3 . Fig.16 is a top view of the light emitting module 3 . Fig.17 yes Fig.16 Cross-sectional view at section line XVII-XVII. Fig.18 It will be Fig.17 An enlarged view of a portion of the window portion 13 surrounded by a dotted line in the cross-sectional view of FIG. Fig.19 This is a cross-sectional view showing a state where a light detecting member 50 is connected to a window portion 13 like a light emitting module 2 according to the second embodiment.

[0173] also, Fig.16 The cross-sectional view at the X-X section line is Fig.10 Likewise. In addition, Fig.19 The shaded area in FIG. 1 represents the area through which the light emitted from the light emitting unit 20 passes. Fig.19 In the figure, shading is omitted for the cross sections of the components.

[0174] The light emitting module 3 is different from the light emitting module of the above-described embodiment in that a light guide 141 having a lens component 145 is provided on the frame 10. Also, it is different from the light emitting module of the above-described embodiment in that two or more light guides 141 having different structures are provided on the frame 10. In addition, the same structure as the light emitting module of the above-described embodiment can be adopted.

[0175] The light emitting module 3 has one or more light guides 141 having a lens component 145. In addition, the plurality of light guides 141 include a light guide 141 having a lens component 145 (a first light guide) and a light guide 141 without a lens component 145 (a second light guide). In addition, the light emitting module 3 may not have a second light guide. For example, all light guides 141 may be first light guides.

[0176] (First light guide portion)

[0177] The lens member 145 included in the first light guide unit is, for example, a condenser lens that condenses light incident on the window portion 13. In addition, instead of a condenser lens, for example, a diffuser lens or a collimator lens may be used depending on the purpose or application.

[0178] In the first light guide portion, the lens component 145 is provided on the incident surface side for light to be incident relative to the window portion 13. In addition, as for the first light guide portion, the filter 144 is connected to the incident surface side of the light guide component 142 that guides the light to the emission port 14, and the lens component 145 is connected to the incident surface side of the filter 144. The light passing through the lens component 145 passes through the light guide path formed by the light guide component 142 and is focused toward the emission port 14. In addition, the focusing point of the light passing through the lens component 145 is located on the emission port 14 or outside the frame 10.

[0179] (Second light guide portion)

[0180] As the second light guide portion, the light guide portion 141 described in the light emitting module 1 of the first embodiment can be adopted.

[0181] If the first light guide part and the second light guide part are compared, the lens surface of the lens component 145 of the first light guide part is larger than the incident surface of the second light guide part. The area of ​​the emission port 14 is larger in the first light guide part than in the second light guide part. In addition, the area of ​​the incident surface of the light in the window part 13 is larger in the first light guide part than in the second light guide part. In addition, the light guide path formed by the light guide component 142 is larger in the first light guide part than in the second light guide part. The first light guide part can ensure a larger area for light to pass through than in the second light guide part.

[0182] (Light emitting module 3)

[0183] In the light emitting module 3, the first light guide is provided in the window 13 of the second side surface. In addition, the plurality of windows 13 provided on the second side surface include the window 13 provided with the first light guide. In addition, the plurality of windows 13 provided on the second side surface include the window 13 provided with the second light guide.

[0184] In the example of the light emitting module 3 shown in the figure, the first light guide is provided in the window 13 for extracting light transmitted through the optical member 30 having a high reflectivity over the entire specific wavelength range with respect to light in the specific wavelength range from the light emitting unit 20 .

[0185] In addition, in the example of the light-emitting module 3 shown in the figure, a second light-guiding portion is provided in the window portion 13 for extracting light transmitted through the optical component 30 having high reflectivity in a part of a specific wavelength range and high transmittance in other parts with respect to light in a specific wavelength range from the light-emitting unit 20.

[0186] In the example of the light emitting module 3 shown in the figure, a first light guide is provided for the window 13 for taking out light emitted from one or more light emitting elements, and a second light guide is provided for the window 13 for taking out light converted in wavelength by the wavelength conversion member 26. Therefore, one first light guide and two second light guides are provided in the housing 10.

[0187] For example, as in the light emitting module 2 of the second embodiment, when the light receiving surface of the light receiving element 51 is smaller than the emission port 14 of the window portion 13, by providing the first light guide portion to focus light on the light receiving surface, the amount of light irradiated to the light receiving surface can be increased (see Fig.19 ) In addition, the light receiving sensitivity of the light receiving element 51 can be expected to be further improved by providing the second light guide portion in the second window portion of the light-emitting unit 20 where less light is extracted.

[0188] In the example of the light emitting module 3 shown in the figure, the light focusing point of the light focused by the lens component 145 of the first light guide portion is set outside the housing 10. For example, as shown in the enlarged view, when the light detection component 50 is provided outside the housing 10, the light focusing point can be set on the light receiving surface of the light receiving element 51 of the light detection component 50. Thus, the light receiving element 51 can effectively receive the collimated light incident on the window portion 13.

[0189] <Fourth embodiment>

[0190] Next, a light emitting module 4 according to a fourth embodiment will be described. Figure 20 to Figure 22 This is a diagram for explaining an exemplary embodiment of the light emitting module 4 . Fig. 20 It is a perspective view of the light emitting module 4 . Fig.21 is a top view of the light emitting module 4 . Fig. 22 is a side view of the light emitting module 4 .

[0191] The light emitting module 4 is different from the light emitting module of the above-described embodiment in that it has a plurality of wirings 70, a plurality of connectors 60, and a base plate 80. Otherwise, the same structure as that of the light emitting module of the above-described embodiment can be adopted.

[0192] (Wiring 70)

[0193] For example, FPC (Flexible Printed Circuits) can be used for the wiring 70. In addition, the wiring 70 is film-shaped, thin and long, and has flexibility. Therefore, even in the case of deforming into a bent state, it is possible to maintain electrical connection. In addition, the wiring 70 has a terminal at the front end.

[0194] (Connector 60)

[0195] The connector 60 includes a first connector portion 61 and a second connector v, each of which is connected to a terminal. The first connector portion 61 and the second connector v are opposed to each other. In addition, the first connector portion 61 and the second connector portion 62 are electrically connected via a conductive portion 63 .

[0196] In addition, when viewed from above parallel to the mounting surface on which the connector 60 is mounted, the first connector portion 61 is arranged parallel to a direction (fifth direction) perpendicular to a direction (fourth direction) in which the conductive portion 63 connects the first connector portion 61 and the second connector portion 62 that are opposed to each other. In addition, the second connector v is arranged parallel to the fifth direction.

[0197] In addition, the first connector portion 61 and the second connector portion 62 have rectangular shapes elongated in the fifth direction when viewed from above parallel to the mounting surface of the mounting connector 60. The length of the first connector portion 61 in the fifth direction is greater than the length of the second connector portion 62 in the fifth direction.

[0198] The plurality of connectors 60 include two connectors 60 having different lengths of the via 63 connecting the first connector portion and the second connector portion. The difference in length of the via 63 between the two connectors 60 is greater than the length of the first connector portion 61 in the fourth direction.

[0199] (Base plate 80)

[0200] The base plate 80 has a flat plate shape. The base plate 80 is formed of, for example, a glass epoxy plate. Alternatively, it may be formed of an aluminum plate.

[0201] (Light emitting module 4)

[0202] In the light emitting module 4, the base plate 80 is arranged on the heat sink 40. In a plan view, the base plate 80 is arranged to face the side surface of the heat sink 40 on which the light emitting device 21 is mounted. In a plan view, a straight line passing through the side surface of the heat sink 40 is parallel to the side of the base plate 80 facing the side surface.

[0203] In a plan view, the distance between the side surface of the heat sink 40 and the base plate 80 is more than half the length of the shortest wiring 70 among the plurality of wirings 70, more than half the length of the longest wiring 70 among the plurality of wirings 70, and shorter than the length of the shortest wiring 70 among the plurality of wirings 70. By arranging at this interval, the plurality of wirings 70 can be stably connected.

[0204] The plurality of connectors 60 are arranged on the upper surface side of the light emitting module 4. In addition, the plurality of connectors 60 are arranged on the heat sink 40. In addition, the plurality of connectors 60 are mounted on the base plate 80. In addition, the base plate 80 may be omitted and the light emitting module 4 may be mounted on the upper surface of the heat sink 40. In this case, the light emitting module 4 may not have the base plate 80.

[0205] The plurality of connectors 60 are arranged so that the first connector 61 is close to the light emitting device 21. The first connector 61 faces the second side surface, while the second connector 62 faces the opposite direction.

[0206] The plurality of connectors 60 are arranged in parallel on the heat sink 40. One light emitting device 21 corresponds to one connector 60, and the plurality of connectors 60 are arranged so that the first connector portion 61 of one connector 60 and the connection portion 23 of one light emitting device 21 face each other.

[0207] The lengths of the conductive portions 63 of the adjacent connectors 60 are different among the plurality of connectors 60 arranged in a row. In addition, the adjacent connectors 60 are arranged with their first connector portions 61 staggered in the fourth direction. That is, the first connector portions 61 of the adjacent connectors 60 are not arranged on a straight line parallel to the fifth direction.

[0208] Therefore, the distance between the first connector portion 61 of one of the adjacent connectors 60 and the connection portion 23 of the light emitting device 21 corresponding to the connector 60 is longer than the distance between the first connector portion 61 of the other connector 60 and the connection portion 23 of the light emitting device 21 corresponding to the connector 60. In addition, the difference in the distances is at least greater than the length of the first connector portion 61 in the fourth direction.

[0209] On the other hand, the adjacent connectors 60 are arranged so that the second connector parts 62 are not offset from each other in the fourth direction. That is, the second connector parts 62 of the adjacent connectors 60 are arranged on a straight line parallel to the fifth direction.

[0210] Therefore, the distance between the second connector part 62 of one connector 60 among adjacent connectors 60 and the connection part 23 of the light-emitting device 21 corresponding to the connector 60 is the same as the distance between the second connector part 62 of another connector 60 and the connection part 23 of the light-emitting device 21 corresponding to the connector 60, or the difference between them is at least smaller than the length of the second connector part 62 in the fourth direction.

[0211] Since the first connector portion 61 is longer than the second connector portion 62 in terms of length in the fifth direction, the plurality of connectors 60 can be arranged at shorter intervals by arranging them in this way. Thus, the area for arranging the plurality of connectors 60 can be reduced.

[0212] The interval between adjacent connectors 60 is shorter than half the length in the fifth direction of the first connector portion 61 and half the length in the fifth direction of the second connector portion 62. In addition, as the interval is shortened, the area for arranging the plurality of connectors 60 becomes smaller.

[0213] The plurality of connectors 60 of the light emitting module 4 include one or more first connectors and one or more second connectors. In addition, the number of the first connectors is the same as the number of the second connectors. For example, the light emitting module 4 shown in the figure has a total of six connectors 60 including three first connectors and three second connectors. In addition, the number of the first connectors and the number of the second connectors are the same as the number of the light emitting units 20.

[0214] The wiring 70 is connected to the corresponding light emitting device 21 and the connector 60. The plurality of light emitting devices 21 and the plurality of connectors 60 are electrically connected through the plurality of wirings 70. The terminal of the wiring 70 is connected to the first connector portion 61 of the connector 60. In addition, the wiring 70 is connected to the connection portion 23 of the light emitting device 21. For example, the wiring 70 is connected to the first surface (wiring mounting surface) of the connection portion 23.

[0215] In the light emitting module 4, the first connectors 61 are staggered to achieve miniaturization, and the second connectors 62 are aligned to achieve a light emitting module that is easily connected to external terminals. This can reduce the design burden when manufacturing a device equipped with the light emitting module 4.

[0216] The light emitting module 4 can be said to be an easy-to-handle light emitting module in that electrical connection to each light emitting device 21 can be easily performed by providing a connector and connecting to the connector.

[0217] <Fifth embodiment>

[0218] Next, a light emitting module 5 according to a fifth embodiment will be described. Fig.23 and Fig.24 This is a diagram for explaining an exemplary embodiment of the light emitting module 5 . Fig.23 It is a perspective view of the light emitting module 5 . Fig.24 is a top view of the light emitting module 5 .

[0219] The light emitting module 5 of the fifth embodiment is another example of a light emitting module capable of reducing the area for arranging a plurality of connectors 60, similarly to the light emitting module 4 of the fourth embodiment. In addition, the light emitting module 5 of the fifth embodiment is different from the light emitting module 4 of the fourth embodiment in that this is achieved by using a plurality of connectors 60 having the same length of the via 63.

[0220] In the light emitting module 5, in a plan view, the plurality of connectors 60 are alternately arranged along the fifth direction in two regions separated by a straight line extending along the fifth direction as a boundary line. The connector 60 arranged in the region close to the light emitting device 21 of the two regions is arranged so that the second connector portion 62 is close to the boundary line, and the connector 60 arranged in the region far from the light emitting device 21 is arranged so that the first connector portion 61 is close to the boundary line.

[0221] In the light emitting module 5, one base plate 80 is prepared for one connector 60, and the same number of base plates 80 as the number of connectors 60 is arranged. Alternatively, a plurality of connectors 60 may be arranged on one base plate 80, or the connector 60 may be mounted on the heat sink 40 without the base plate 80.

[0222] In this way, by using the same connector 60 , common parts can be used, and the manufacturing process of the light emitting module can be simplified.

[0223] The above describes the embodiment of the present invention, but the light-emitting device of the present invention is not strictly limited to the light-emitting device of the embodiment. That is, the present invention is not impossible to implement if it is not limited to the appearance and structure of the light-emitting device disclosed by the embodiment. In addition, it is not necessary to fully possess all the constituent elements, but they can be appropriately applied. For example, in the case where a part of the constituent elements of the light-emitting device disclosed by the embodiment is not recorded in the technical scheme, the constituent elements of the part are specified so that the invention described in the technical scheme is appropriately applied on the basis of recognizing the freedom of design made by those skilled in the art such as substitution, omission, deformation of shape, change of material, etc.

[0224] Industrial Applicability

[0225] The light emitting device described in each embodiment can be used for medical light sources such as endoscopes, projectors, lighting, displays, and the like.

[0226] Description of Reference Numerals

[0227] 1, 2, 3, 4, 5 light emitting modules

[0228] 10 Frame

[0229] 11 Base

[0230] 110 Configuration Area

[0231] 112, 114 upper surface

[0232] 12 covers

[0233] 121, 123 upper surface

[0234] 13 Window

[0235] 14 Injection port

[0236] 140 light-transmitting parts

[0237] 141 Light guide

[0238] 142 Light guide components

[0239] 143Connection parts

[0240] 144 Filters

[0241] 145 lens components

[0242] 15 connection holes

[0243] 20 light units

[0244] 21 Lighting Device

[0245] 22. Light-emitting part

[0246] 23Connection

[0247] 24 optical components (condenser lens)

[0248] 25 optical components (diffuser plate)

[0249] 26Wavelength conversion component (phosphor wheel)

[0250] 261 wavelength conversion unit

[0251] 262 conversion control unit

[0252] 27 Protective components

[0253] 271 connection

[0254] 272 Protection Department

[0255] 28 optical components (collimating lens)

[0256] 30 optical components (dichroic mirror)

[0257] 40 Radiator

[0258] 50 light detection components

[0259] 51 light receiving element

[0260] 52 Connecting parts

[0261] 60 Connectors

[0262] 61 first connector part

[0263] 62 second connector portion

[0264] 63 Conductive part

[0265] 70 wiring (flexible circuit board)

[0266] 80 base board

Claims

1. A light emitting module, comprising: A first light emitting unit, comprising a first light emitting device, the first light emitting device having a plurality of first light emitting portions each having a light emitting surface and emitting light from a plurality of first light emitting elements, a heat dissipation surface provided on the opposite side of the light emitting surface, and a connection portion located between the light emitting surface and the heat dissipation surface and having a wiring mounting surface for electrically connecting the plurality of first light emitting elements, the first light emitting unit emitting first light; a first optical component that reflects the first light; a frame having a base portion in which the first light emitting unit and the first optical component are arranged, and a cover portion including a first upper surface located above the arrangement area in an upward direction and surrounding the first light emitting unit and the first optical component arranged on the base portion; a heat sink connected to the heat dissipation surface and having a mounting surface for mounting the first light emitting device, The wiring mounting surface extends to be higher than the first upper surface of the cover in the upper direction, and a portion of the wiring mounting surface is exposed to the outside of the frame.

2. The light emitting module according to claim 1, wherein: The frame body has the first upper surface and a second upper surface located above the first upper surface. The wiring mounting surface is exposed above the first upper surface and does not extend above the second upper surface.

3. The light emitting module according to claim 1 or 2, wherein: The heat sink has an upper surface, The wiring mounting surface is exposed above the first upper surface and does not extend above the upper surface of the heat sink.

4. The light emitting module according to claim 1, wherein: have: A plurality of connectors, each of which has a first connector portion, a second connector portion, and a conductive portion connecting the first connector portion and the second connector portion; a plurality of wirings connected to the first connector parts of the plurality of connectors and the connection parts of the first light emitting device, In the plurality of connectors, one of the first connector portions is longer than the second connector portion in a direction perpendicular to a direction in which the conductive portion connects the first connector portion and the second connector portion.

5. The light emitting module according to claim 4, wherein: The plurality of connectors are arranged in a row on the heat sink.

6. The light emitting module according to claim 4 or 5, wherein: The plurality of connectors include a first connector and a second connector that are adjacently arranged and have conductive portions with different lengths. A distance between the first connector portion of the first connector and the connection portion corresponding to the first connector is longer than a distance between the first connector portion of the second connector and the connection portion corresponding to the second connector.

7. The light emitting module according to claim 1, wherein: The first light emitting unit includes the plurality of first light emitting elements, a condenser lens for condensing light emitted from the plurality of first light emitting elements, a wavelength conversion member for incident upon the condensed light, and a collimator lens for collimating the first light emitted from the wavelength conversion member.

8. The light emitting module according to claim 1, wherein: have: A second light emitting unit having one or more second light emitting elements, emitting light having a peak wavelength different from that of the first light, namely, second light; a second optical component that reflects a portion of the second light; A frame surrounds the first light emitting unit, the second light emitting unit, the first optical component and the second optical component.

9. The light emitting module according to claim 8, wherein: The second light emitting unit includes a plurality of the second light emitting elements, a condenser lens for condensing the second light emitted from the plurality of the second light emitting elements, a diffuser plate for diffusing the condensed second light, and a collimator lens for collimating the diffused second light.

10. The light emitting module according to claim 8 or 9, wherein: The first optical component reflects a portion of the first light and transmits a portion thereof, The second optical component reflects a portion of the second light and transmits a portion thereof, The frame has a first window portion for taking out the first light and the second light traveling along a prescribed direction via the first optical component and the second optical component, a second window portion for taking out the first light traveling along a direction different from the prescribed direction via the first optical component, and a third window portion for taking out the second light traveling along a direction different from the prescribed direction via the second optical component.

11. The light emitting module according to claim 10, wherein: have: a first light detecting member configured to detect the first light emitted from the second window; a second light detecting member configured to detect the second light emitted from the third window portion, The second window is provided between the first light detecting component and the first light emitting unit. The third window portion is provided between the second light detecting element and the second light emitting unit.

12. The light emitting module according to claim 11, wherein: The third window portion includes a condenser lens for condensing light incident on the third window portion. The second window portion has no condensing lens.

13. The light emitting module according to claim 10, wherein: The area of ​​the emission port of the first window portion serving as a light emission port is larger than any of the areas of the emission port of the second window portion serving as a light emission port and the emission port of the third window portion serving as a light emission port.

Images