JP2016091966A - Light emitting device and lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light emitting device which enables improvement of the strength of a cover body and the quality of an outer surface of the cover body.SOLUTION: A light emitting device 11 includes: a light emitting module 21; and a cover body 20 for storing the light emitting module 21. The cover body 20 includes: a first cover part 26 formed by a resin material having light permeability; and a second cover part 27 formed by a resin material having light permeability and covering an outer surface of the first cover part 26. Only the first cover part 26 of the first and second cover parts 26, 27 contains a light permeable filler 26b.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to a light emitting device and a lighting device including a light emitting module.

  Conventionally, as a light emitting device provided with a light emitting module, for example, there are a straight tube lamp, a base light for general illumination, and the like. For example, in a straight tube lamp, a long cylindrical cover body is used, and a long light emitting module is accommodated in the cover body.

  Some cover bodies are formed of a resin material. However, in order to ensure strength, the cover body needs to be thickened, and thus becomes heavy and expensive.

  In general, it is known that glass fiber or the like is mixed into a resin molded product to ensure strength. However, the surface of the resin molded product has irregularities due to glass fibers, and dirt easily adheres to the irregularities. The quality of the outer surface may be impaired due to difficulty in removal.

JP 2012-221864 A

  Problem to be solved by the invention is providing the light-emitting device and illuminating device which can improve the intensity | strength of a cover body and can improve the quality of the outer surface of a cover body.

  The light emitting device of the embodiment includes a light emitting module and a cover body that houses the light emitting module. The cover body includes a first cover portion formed of a light-transmitting resin material and a second cover portion formed of a light-transmitting resin material and covering the outer surface of the first cover portion. Of the first and second cover parts, only the first cover part contains the light transmissive filler.

  According to the present invention, it is expected that the strength of the cover body is improved and the quality of the outer surface of the cover body is improved.

It is sectional drawing of the light-emitting device which shows 1st Embodiment. It is a perspective view of the cover body and light emitting module of a light emitting device same as the above. It is a perspective view of a light emitting device same as the above. It is sectional drawing of the electric power feeding side of a light-emitting device same as the above. It is sectional drawing of the non-power feeding side of a light emitting device same as the above. It is a perspective view of the nozzle | cap | die of the electric power feeding side of a light-emitting device same as the above. It is a perspective view of the nozzle | cap | die of the electric power feeding side of a light-emitting device same as the above. It is a perspective view of the nozzle | cap | die of the non-power feeding side of a light-emitting device same as the above. It is a perspective view of the nozzle | cap | die of the non-power feeding side of a light-emitting device same as the above. It is a perspective view of the illuminating device using a light-emitting device same as the above. It is sectional drawing of the light-emitting device which shows 2nd Embodiment. It is a perspective view of the light-emitting device which shows 3rd Embodiment. It is a perspective view of the light-emitting device which shows 4th Embodiment.

  Hereinafter, a first embodiment will be described with reference to FIGS. 1 to 10.

  As shown in FIG. 10, the illumination device 10 includes a light emitting device 11. The light emitting device 11 of the first embodiment is a long straight tube lamp 12. The lighting device 10 using the straight tube lamp 12 includes an instrument body 13, sockets 14 and 15 disposed at both ends in the longitudinal direction of the instrument body 13, a power supply device 16 disposed in the instrument body 13, and the like. I have.

  1 to 9 show a straight tube lamp 12. In FIG. 2, a part of the straight tube lamp 12 (the first cover part 26 and the second cover part 27 having light transmittance) is shown in a state of being transmitted therethrough.

  The straight tube lamp 12 includes a cover body 20, a light emitting module 21 disposed in the cover body 20, and caps 22 and 23 disposed at both ends of the cover body 20.

  The cover body 20 is cylindrical and is formed long. The cover body 20 includes a first cover part 26, a second cover part 27, and a third cover part 28. The first and third cover portions 26 and 28 constitute an inner tube 29, and the second cover portion 27 constitutes an outer tube 30 that covers the inner tube 29. Inside the cover body 20, a space portion 31 for accommodating the light emitting module 21 is formed by the first and third cover portions 26 and 28.

  The first cover part 26 is located on the front side that is the light irradiation direction of the cover body 20, and is formed in a cylindrical shape in which the third cover part 28 is integrally formed on the rear side opposite to the light irradiation direction. Has been.

  The first cover portion 26 is formed of a resin material 26a having light transparency. Examples of the resin material 26a include polycarbonate and acrylic.

  The first cover portion 26 contains a light transmissive filler 26b in the resin material 26a in order to increase the strength. Examples of the light transmissive filler 26b include glass filler that is glass fiber. Further, the first cover portion 26 contains a diffusing material 26c in the resin material 26a in order to diffuse the light of the light emitting module 21. Examples of the diffusing material 26c include silica, glass beads, and glass powder. Therefore, the 1st cover part 26 is formed milky white with the diffusion material. Further, irregularities are generated by the light transmissive filler 26b on the outer surface and the inner surface of the first cover portion 26 containing the light transmissive filler 26b. The first cover part 26 may not contain the diffusing material 26c.

  The thickness of the first cover portion 26 is such that both side portions formed integrally with the third cover portion 28 are thickest and gradually become thinner from both side portions toward the center. The thickness of the first cover part 26 is, for example, about 0.3 to 1.0 mm.

  The second cover portion 27 is formed in a cylindrical shape that covers the outer surfaces of the first and third cover portions 26 and 28.

  The second cover portion 27 is formed of a resin material 27a having light transparency. Examples of the resin material 27a include polycarbonate and acrylic.

  The second cover portion 27 does not contain a light transmissive filler and a diffusing material. Therefore, the second cover portion 27 is transparent, and the outer surface of the second cover portion 27 is a smooth glossy surface free from unevenness caused by the light-transmitting filler.

  The thickness of the second cover portion 27 is thinner than the thickness of the first cover portion 26, preferably in the range of 0.1 to 1.0 mm, and more preferably in the range of 0.1 to 0.2 mm. If the thickness of the second cover portion 27 is smaller than 0.1 mm, the outer surface of the second cover portion 27 is likely to be uneven due to the influence of the unevenness of the outer surface of the first cover portion 26. Moreover, since the linear expansion coefficient of the 2nd cover part 27 is large compared with the linear expansion coefficient of the 1st cover part 26 containing the light transmissive filler 26b, the thickness of the 2nd cover part 27 is 1.0 mm. If it is thicker, the difference from the linear expansion coefficient of the first cover portion 26 becomes too large, and distortion is likely to occur. Therefore, the thickness of the second cover portion 27 is preferably thin. However, in order to prevent the outer surface of the second cover portion 27 from being uneven due to the influence of the unevenness of the outer surface of the first cover portion 26, The thickness of the cover portion 27 is preferably in the range of 0.1 to 0.2 mm. The thickness of the second cover portion 27 is uniform throughout.

  The third cover portion 28 is located on the rear side opposite to the light irradiation direction of the cover body 20 and is formed in a cylindrical shape together with the first cover portion 26. Both sides of the third cover portion 28 are formed integrally with the first cover portion 26.

  The third cover portion 28 is formed of a light transmissive or non-light transmissive resin material 28a. Examples of the resin material 28a include polycarbonate.

  The third cover portion 28 is mixed with a heat conductive filler 28b in order to improve the heat conductivity. Examples of the thermally conductive filler 28b include titanium oxide, carbon, calcium carbonate, and the like. Therefore, the third cover portion 28 has better thermal conductivity than the first and second cover portions 26 and 27.

  On the inner surface of the third cover portion 28, there are an arrangement portion 33 for arranging the light emitting module 21, and a pair of holding portions 34 for holding the light emitting module 21 between the arrangement portion 33 on both sides of the arrangement portion 33. Projected. A holding groove 35 through which the light emitting module 21 is inserted is formed between the arrangement part 33 and the holding part 34.

  In the vicinity of both ends in the longitudinal direction of the third cover portion 28, mounting holes 36 penetrating the second and third cover portions 27, 28 are provided.

  And the 1st cover part 26 of the cover body 20, the 2nd cover part 27, and the 3rd cover part 28 are integrally formed by extrusion molding. That is, it is multilayer molding, and is formed by three-color molding in which three resin materials 26a, 27a, and 28a are integrated. Therefore, between the first cover part 27 and the second cover part 27, between the first cover part 26 and the third cover part 28, and between the second cover part 27 and the third cover part 28. Are in close contact with each other without an air layer. The first, second, and third cover portions 26, 27, and 28 are formed to have the same length in the longitudinal direction.

  The light emitting module 21 includes a long strip-like flexible wiring board 39 and a plurality of light emitting units 40 mounted at the center in the width direction of the surface 39a of the flexible wiring board 39.

  The flexible wiring board 39 is configured by laminating a film-like insulating material and a pattern-like wiring. The insulating material is formed of a transparent material that can transmit light, or a translucent material having light diffusibility, or an opaque material that does not transmit light. In the case of being opaque, a highly reflective film having a high light reflectance may be formed on the surface 39a of the flexible wiring board 39. The wiring is arranged along the longitudinal direction in the central region in the width direction of the insulating material. The plurality of light emitting units 40 are electrically connected to the wiring, and the plurality of light emitting units 40 are electrically connected in series by the wiring.

  The flexible wiring board 39 is inserted into the holding grooves 35 on both sides of the third cover part 28 by inserting both side parts of the flexible wiring board 39, so that the flexible wiring board 39 is curved along the arrangement part 33, and the flexible wiring board 39 The back surface 39b is held so as to be in contact with the arrangement portion 33.

  The light emitting unit 40 is a light emitting element such as an LED or an organic EL. In the case of an LED, for example, a surface mount type SMD (Surface Mount Device) package is used. The plurality of light emitting units 40 are mounted at predetermined intervals along the longitudinal direction at the center in the width direction of the surface 39a of the flexible wiring board 39.

  The bases 22 and 23 are, for example, GX16t-5 type bases.

  The base 22 is a power supply side base, and includes a base body 43 and a pair of power supply terminals 44.

  The base body 43 is formed in a cylindrical shape with a bottom by a resin material having electrical insulation. The base body 43 is formed with a base portion 45 having an outer diameter substantially the same as the outer diameter of the cover body 20. On the outer end face of the base part 45, a ridge 46 is provided along the diameter direction of the base part 45 to indicate the power supply side. A chamfered portion 47 is formed in the peripheral portion on the outer end side of the base portion 45 to indicate that it is on the power feeding side. On one side in the direction orthogonal to the protrusion 46 on the outer end side of the base part 45, a hollow index 48 is formed to represent the light irradiation direction from the outer end surface of the base part 45 to the peripheral surface. Yes.

  From an inner end surface opposite to the outer end surface of the base portion 45, an insertion portion 49 and a connecting portion 50 that are inserted into the cover body 20 are projected. The insertion portion 49 has a cylindrical portion formed inside the first cover portion 26 and a flat portion facing the inside of the third cover portion 28. The connecting portion 50 is an L-shaped connecting piece 51 projecting from the flat surface of the insertion portion 49 facing the third cover portion 28, and the cover body 20 is mounted from the leading end side of the connecting piece 51. A protrusion 52 that fits into the hole 36 is provided. The tip of the protrusion 52 is formed on an inclined surface 53 that is inclined toward the tip side of the connecting piece 51. Then, by inserting the insertion portion 49 and the connecting portion 50 into the inside of the cover body 20 from the end portion of the cover body 20, the inclined surface 53 of the projection 52 abuts on the end portion of the cover body 20, and the tip of the connecting piece 51 The side is elastically deformed so as to approach the insertion portion 49, and the protrusion 52 is inserted inside the cover body 20. When the protrusion 52 inserted inside the cover body 20 reaches the attachment hole 36, the protrusion 52 fits into the attachment hole 36 due to the elasticity of the connecting piece 51, and the base 22 and the cover body 20 are connected. The base 22 can be removed from the cover body 20 by moving the base 22 in a direction away from the cover body 20 while pushing the projection 52 from the outside through the mounting hole 36 of the cover body 20.

  The pair of power supply terminals 44 are made of metal, and the tips are bent in an L shape. The pair of power supply terminals 44 protrude from the protrusion 46 of the base body 43 so that the bending directions of the tips are opposite to each other. The pair of power supply terminals 44 is provided with a connection portion 54 that protrudes inside the insertion portion 49 and is electrically connected to the wiring of the flexible wiring board 39 of the light emitting module 21.

  The base 23 is a non-power supply side base or a ground side base, and includes a base body 55 and a single pin 56.

  The base body 55 is formed in a cylindrical shape with a bottom by a resin material having electrical insulation. The base body 55 is formed with a base portion 57 having an outer diameter substantially the same as the outer diameter of the cover body 20. A recess 58 is formed on the outer end surface of the base portion 57 to indicate that it is on the non-power feeding side. A chamfered portion 59 is formed in the peripheral portion on the outer end side of the base portion 57 to indicate the non-power feeding side. An index 60 for indicating the light irradiation direction is formed from the outer end surface of the base part 57 to the peripheral surface on the side opposite to the recess 58 on the outer end side of the base part 57.

  From the inner end surface opposite to the outer end surface of the base portion 45, an insertion portion 61 and a connecting portion 62 that are inserted into the cover body 20 are provided. The insertion part 61 and the connection part 62 are formed in a common structure with the insertion part 49 and the connection part 50. That is, in the insertion portion 61, a portion inserted inside the first cover portion 26 is formed in a cylindrical shape, and a portion facing the inside of the third cover portion 28 is formed on a flat surface. The connecting part 62 has an L-shaped connecting piece 63 projecting from the flat surface of the insertion part 61 facing the third cover part 28, and the cover body 20 is attached by projecting from the distal end side of the connecting piece 63. A protrusion 64 that fits into the hole 36 is provided. The tip of the protrusion 64 is formed on an inclined surface 65 that is inclined toward the tip side of the connecting piece 63. Then, by inserting the insertion portion 61 and the connecting portion 62 into the inside of the cover body 20 from the end portion of the cover body 20, the inclined surface 65 of the projection 64 abuts on the end portion of the cover body 20, and the tip of the connecting piece 63 The side is elastically deformed so as to approach the insertion portion 61, and the protrusion 64 is inserted inside the cover body 20. When the protrusion 64 inserted inside the cover body 20 reaches the attachment hole 36, the protrusion 64 fits into the attachment hole 36 due to the elasticity of the connecting piece 63, and the base 23 and the cover body 20 are connected. The base 23 can be removed from the cover body 20 by moving the base 23 in a direction away from the cover body 20 while pushing the projection 64 from the outside through the mounting hole 36 of the cover body 20.

  The pin 56 is made of metal and has a T-shaped cross section. The tip of the pin 56 is formed in an oval shape, and the pin 56 projects from the base body 55 so that the oval straight line portion is parallel to the recess 58.

  The chamfered portion 47 of the base 22 and the chamfered portion 59 of the base 23 have a common chamfering amount at a common angle between the outermost end surfaces of the bases 22 and 23 and the outer peripheral portion. The chamfered portion 47 of the base 22 is chamfered based on the end surface of the protrusion 46 protruding from the end surface of the base portion 45, and the chamfered portion 59 of the base 23 is chamfered based on the end surface of the base portion 57. Therefore, the width of the chamfered portion 47 at the location of the ridge 46 of the base 22 is the same as the width of the chamfered portion 59 at a location other than the recess 58 of the base 23, but the chamfered portion at a location other than the ridge 46 of the base 22 The width of 47 is narrower than the width of the chamfered portion 59 in a portion other than the recess 58 of the base 23. Therefore, it becomes easy to distinguish the base 22 on the power supply side and the base 23 on the non-power supply side from the width of the chamfered portions 47 and 59.

  The socket 14 of the lighting device 10 is a power supply side socket for connecting the base 22 on the power supply side of the straight tube lamp 12 and is electrically connected to the power supply device 16. The socket 15 is a non-power supply side socket for connecting the base 23 on the non-power supply side of the straight tube lamp 12. These sockets 14 and 15 are configured such that the corresponding bases 22 and 23 can be mounted on the power supply side and the non-power supply side, but the non-corresponding bases 23 and 22 cannot be mounted.

  Next, the operation of this embodiment will be described.

  In order to assemble the straight tube lamp 12, the flexible wiring board 39 is inserted into the integrally formed cover body 20. At this time, by inserting both sides of the flexible wiring board 39 into the holding grooves 35 on both sides of the third cover part 28, the flexible wiring board 39 is moved along the placement part 33 by the holding part 34 of the third cover part 28. And is held in a state where the center of the flexible wiring board 39 is in contact with the placement portion 33.

  Subsequently, the pair of power supply terminals 44 of the base 22 on the power supply side and the flexible wiring board 39 are electrically connected by wiring, and the base 22 is attached to one end of the cover body 20. At this time, by inserting the insertion portion 49 and the connecting portion 50 into the inside of the cover body 20 from one end of the cover body 20, the inclined surface 53 of the protrusion 52 abuts on the end portion of the cover body 20, and the tip of the connecting piece 51 The side is elastically deformed so as to approach the insertion portion 49, and the protrusion 52 is inserted inside the cover body 20. When the protrusion 52 inserted inside the cover body 20 reaches the attachment hole 36, the protrusion 52 fits into the attachment hole 36 due to the elasticity of the connecting piece 51, and the base 22 and the cover body 20 are connected.

  Subsequently, the base 23 on the non-power feeding side is attached to the other end of the cover body 20. At this time, by inserting the insertion portion 61 and the connecting portion 62 into the inside of the cover body 20 from the end portion of the cover body 20, the inclined surface 65 of the protrusion 64 abuts on the end portion of the cover body 20, and The tip end side is elastically deformed so as to approach the insertion portion 61, and the protrusion 64 is inserted into the cover body 20. When the protrusion 64 inserted inside the cover body 20 reaches the attachment hole 36, the protrusion 64 fits into the attachment hole 36 due to the elasticity of the connecting piece 63, and the base 23 and the cover body 20 are connected.

  By attaching the caps 22 and 23 to both ends of the cover body 20, the movement of the flexible wiring board 39 in the longitudinal direction with respect to the cover body 20 is restricted by the contact between the flexible wiring board 39 and the caps 22 and 23.

  Then, the straight tube lamp 12 is mounted between the sockets 14 and 15 of the lighting device 10. At this time, the base 22 on the power supply side of the straight tube lamp 12 and the base 23 on the non-power supply side are discriminated, and the power supply side base 22 of the straight tube lamp 12 is connected to the socket 14 on the power supply side. The base 23 is connected to the non-power supply side socket 15.

  The discrimination between the base 22 on the power supply side and the base 23 on the non-power supply side of the straight tube lamp 12 is different between the power supply terminal 44 and the pin 56, whether or not there is a protrusion 46, and whether or not there is a recess 58. There is a difference between the chamfered portions 47 and 59 being narrow or wide. For example, when an operator holds the center of the straight tube lamp 12 and looks at both ends of the straight tube lamp 12, the difference between the power supply terminal 44 and the pin 56, the presence or absence of the protrusion 46, the depression 58 The difference in whether or not there is a case where it is difficult to confirm depending on the circumferential angle of the straight tube lamp 12, but the difference in whether the chamfered portions 47 and 59 are narrow or wide is different from that of the straight tube lamp 12. Easy to check regardless of the angle in the circumferential direction, easy to check between the power feeding side and the non-power feeding side, and easy to work.

  Then, by supplying power from the power supply device 16 to the straight tube lamp 12, the light emitting unit 40 of the light emitting module 21 emits light. The light emitted from the light emitting unit 40 passes through the first and second cover portions 26 and 27 of the cover body 20 and is emitted to the illumination space. The light that passes through the first cover part 26 is diffused by the diffusion material 26c contained in the first cover part 26, passes through the second cover part 27, and is emitted to the illumination space.

  In the straight tube lamp 12 of the present embodiment, since the first cover portion 26 of the cover body 20 contains the light transmissive filler 26b, the strength of the first cover portion 26 is increased, and the entire cover body 20 is thus formed. The strength of can be improved. Therefore, the cover 20 can be thinned, and the straight tube lamp 12 can be reduced in weight.

  In addition, since the first cover portion 26 contains the light transmissive filler 26b, the outer surface of the first cover portion 26 may be uneven, but the outer surface of the first cover portion 26 is light transmissive. Since it covers with the 2nd cover part 27 which does not contain a permeable filler, the outer surface of the 2nd cover part 27, ie, the outer surface of the cover body 20, becomes a smooth glossy surface without the unevenness | corrugation which arises with a light-transmissive filler. Therefore, the outer surface of the cover body 20 has the appearance of a glass tube used for a fluorescent lamp, has a good design, is not easily soiled, and can easily be wiped off. Therefore, the texture of the outer surface of the cover body 20 can be improved.

  Furthermore, the thickness of the second cover portion 27 is thinner than the thickness of the first cover portion 26, preferably in the range of 0.1 to 1.0 mm, more preferably in the range of 0.1 to 0.2 mm. Therefore, the influence of strain and the like due to the difference between the linear expansion coefficient of the second cover part 27 and the linear expansion coefficient of the first cover part 26 containing the light transmissive filler 26b can be reduced, and the first cover part 26 Even if the outer surface of the second cover portion 27 may be uneven, the outer surface of the second cover portion 27 can be prevented from being uneven.

  In addition, since the first cover part 26 contains the diffusing material 26c together with the light transmissive filler 26b, the plurality of light emitting parts 40 of the light emitting module 21 are difficult to see from the outer surface of the cover body 20, and the first cover part. The whole 26 shines uniformly, and a uniform light distribution is obtained.

  Moreover, since the first cover part 26 disposed inside the second cover part 27 contains the diffusing material 26c, it has a texture like a glass tube of a fluorescent lamp in which a phosphor is applied on the inside. As a result, the function of the diffusion material 26c becomes more effective.

  Further, in order to attach the light emitting module 21 to the third cover portion 28 of the cover body 20, the third cover portion 28 is selected from materials having light transmittance such as the first and second cover portions 26 and 27. It is not essential, and it is possible to select a material with good heat dissipation in order to efficiently dissipate heat generated by the light emitting unit 40 of the light emitting module 21.

  Therefore, when the third cover portion 28 contains the heat conductive filler 28b, the heat conductivity of the third cover portion 28 can be increased, and the heat generated by the light emitting portion 40 of the light emitting module 21 is third. It is possible to efficiently conduct heat from the cover portion 28 to the second cover portion 27 and dissipate heat.

  Further, since the first, second, and third cover portions 26, 27, and 28 of the cover body 20 are formed by integral molding, the cover body 20 is highly manufacturable and high quality is obtained.

  Next, FIG. 11 shows a second embodiment. In addition, the same code | symbol is used about the same structure as 1st Embodiment, and the description about the structure and effect is abbreviate | omitted.

  A projecting portion 70 exposed from the second cover portion 27 is formed on the outer surface of the third cover portion 28 along the longitudinal direction. The second cover portion 27 is opened at a portion through which the protruding portion 70 passes. The cover body 20 is also formed by integral molding.

  Since the outer surface of the protruding portion 70 of the third cover portion 28 is exposed on the outer surface of the cover body 20, the heat generated by the light emitting portion 40 of the light emitting module 21 can be directly radiated from the third cover portion 28 into the air. , Heat dissipation can be improved.

  Next, FIG. 12 shows a third embodiment. In addition, about the same structure as the said embodiment, the same code | symbol is used and the description of the structure and effect is abbreviate | omitted.

  The light emitting module 21 includes a substrate 73 formed of, for example, ceramic, resin, metal, or the like, and a plurality of light emitting units 40 provided on the surface of the substrate 73. The light emitting module 21 is attached to a metal heat radiating body 74 formed by extrusion molding, and is inserted into the cover body 20 together with the heat radiating body 74. The radiator 74 includes a mounting portion 75 on which the substrate 73 is mounted, a side portion 76 that holds both sides of the substrate 73 between the mounting portion 75, and a mounting portion for screwing the caps 22 and 23 to the radiator 74. 77.

  The cover body 20 includes only a cylindrical first cover portion 26 and a cylindrical second cover portion 27 that covers the outer surface of the first cover portion 26. On the inner surface of the first cover portion 26, a plurality of holding portions 78 that hold the heat radiating body 74 are projected.

  Since the straight tube lamp 12 includes the heat radiating body 74, the heat generated by the light emitting unit 40 of the light emitting module 21 is absorbed by the heat radiating body 74, thereby improving the heat dissipation. Furthermore, the strength of the straight tube lamp 12 can be further improved by providing both the first cover part 26 containing the light transmissive filler 26b and the radiator 74.

  Next, FIG. 13 shows a fourth embodiment. In addition, about the same structure as the said embodiment, the same code | symbol is used and the description of the structure and effect is abbreviate | omitted.

  As the light emitting device 11, a light source unit 80 used for a base light is shown. Base lights are used for general lighting in facilities and the like, and are installed directly on the ceiling or suspended. The light source unit 80 is formed in a long shape and is attached to the fixture main body of the base light.

  The light source unit 80 includes a cover body 20 and a plurality of light emitting modules 21 arranged in the cover body 20.

  The cover body 20 includes a first cover part 26, a second cover part 27, and a third cover part 28. The first, second, and third cover portions 26, 27, and 28 are integrally formed by extrusion molding. The front side of the light irradiation direction of the cover body 20 and the rear side opposite to the light irradiation direction are wide in the width direction of the cover body 20, and the cover body 20 is formed in a flat shape.

  The second cover portion 27 is formed so as to cover the outer surface of the first cover portion 26 and a part of the third cover portion 28.

  Arranged portions 33 in which the light emitting modules 21 are disposed are arranged in parallel at a plurality of locations in the width direction of the third cover portion 28. Each placement portion 33 is formed with a holding portion 34 and a holding groove 35 for holding the flexible wiring board 39.

  Also in the light source unit 80, since the first cover portion 26 of the cover body 20 contains the light transmissive filler 26b, the strength of the first cover portion 26 is increased, and the strength of the entire cover body 20 is increased. Can be improved. Therefore, the cover body 20 can be thinned, and the light source unit 80 can be reduced in weight.

  In addition, since the first cover portion 26 contains the light transmissive filler 26b, the outer surface of the first cover portion 26 may be uneven, but the outer surface of the first cover portion 26 is light transmissive. Since it covers with the 2nd cover part 27 which does not contain a permeable filler, the outer surface of the 2nd cover part 27, ie, the outer surface of the cover body 20, becomes a smooth glossy surface without the unevenness | corrugation which arises with a light-transmissive filler. Therefore, the outer surface of the cover body 20 has a glass-like appearance, has a good design, is not easily soiled, and can easily be wiped off. Therefore, the texture of the outer surface of the cover body 20 can be improved.

  In addition, since the first cover part 26 contains the diffusing material 26c together with the light transmissive filler 26b, the plurality of light emitting parts 40 of the light emitting module 21 are difficult to see from the outer surface of the cover body 20, and the first cover part. The whole 26 shines uniformly, and a uniform light distribution is obtained.

  In addition, since the first cover part 26 disposed inside the second cover part 27 contains the diffusing material 26c, the second cover part 27 has a glass-like texture and the diffusing material. 26c works more effectively.

  Further, in order to attach the light emitting module 21 to the third cover portion 28 of the cover body 20, the third cover portion 28 is selected from materials having light transmittance such as the first and second cover portions 26 and 27. It is not essential, and it is possible to select a material with good heat dissipation in order to efficiently dissipate heat generated by the light emitting unit 40 of the light emitting module 21.

  Therefore, when the third cover portion 28 contains the heat conductive filler 28b, the heat conductivity of the third cover portion 28 can be increased, and the heat generated by the light emitting portion 40 of the light emitting module 21 is third. It is possible to efficiently dissipate heat from the cover portion 28.

  Further, since the first, second, and third cover portions 26, 27, and 28 of the cover body 20 are formed by integral molding, the cover body 20 is highly manufacturable and high quality is obtained.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

10 Lighting equipment
11 Light emitting device
13 Instrument body
20 Cover body
21 Light emitting module
26 First cover
26b Light transmissive filler
26c diffusion material
27 Second cover part
28 3rd cover part
28b Thermally conductive filler
31 Space

Claims (7)

A light emitting module;
A first cover portion formed of a light-transmitting resin material; and a second cover portion formed of a light-transmitting resin material and covering an outer surface of the first cover portion. Only the first cover portion of the second cover portion contains a light-transmitting filler, and a cover body that houses the light emitting module;
A light-emitting device comprising: The light emitting device according to claim 1, wherein the first cover portion contains a diffusing material together with the light transmissive filler. The said cover body is provided with the 3rd cover part which forms the space part which accommodates the said light emitting module between the said 1st cover parts, and attaches the said light emitting module. Light-emitting device. The light emitting device according to claim 3, wherein the third cover portion contains a thermally conductive filler. The light emitting device according to any one of claims 1 to 4, wherein the first cover portion and the second cover portion are integrally formed. 5. The light emitting device according to claim 3, wherein the first cover portion, the second cover portion, and the third cover portion are integrally formed. An instrument body;
The light emitting device according to any one of claims 1 to 6, which is disposed on the instrument body;
An illumination device comprising:

Images