JP2013120732A - Lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting device capable of efficiently having a heat radiation effect when wood is used for a base material.SOLUTION: The lighting device includes a wooden base material 30 having a recessed section at least at a part of the base material, a light source section 10 arranged in the recessed section and irradiating light, and a metallic heat radiation member 20 having the light source section at an upper surface and radiating heat generated from the light source section 10 and having an area wider than that of the light source section 10. Heat generated from the light source section can be efficiently transmitted to the heat radiation member since the light source section is arranged in this way by adopting such the structure while the metallic heat radiation member is arranged on a lower surface of the recessed section of the base member made of wood, and the heat staying in the light source section can be reduced.

Description

  The present invention relates to a lighting device.

  Conventionally, various illumination devices in which a light source made of LED is attached to a base member made of metal have been proposed (for example, Patent Document 1). On the other hand, because of the diversity of interior design and the necessity of a design suitable for Japanese houses, development of a lighting device using wood as a base member is desired. However, since the heat generated from the lighting device cannot be efficiently radiated, there is a problem that it is difficult to use wood for the base member to which the light source unit is attached.

Japanese Patent Application No. 2011-14053

  Then, this invention is made | formed in view of such a subject, and it aims at providing the illuminating device which has a heat dissipation effect efficiently and uses wood for the base member.

  The present invention adopts the following means in order to achieve the main object described above.

The lighting device of the present invention includes a wooden base member having a recess at least in part,
A light source unit disposed in the recess and radiating light;
The light source part is disposed on the upper surface, and a metal heat dissipating member having a larger area than the light source part for dissipating heat of the light source part,
It is provided with.

  By adopting such a configuration, the light source part is arranged in a state where the metal heat radiating member is arranged on the lower surface of the concave portion of the base member made of wood, so the heat generated in the light source part is transferred to the heat radiating member. It can conduct efficiently and can reduce that heat accumulates in a light source part. Therefore, it is possible to provide a lighting device using wood as a base member. Thereby, it can be set as the illuminating device which harmonizes with the place where the illuminating device which has a wooden appearance like a Japanese-style house, a temple, a Buddhist temple, etc. of a wooden tone is desired. Further, by using wood as the base member, it can be easily fixed to the building structure with a nail, an adhesive for wood, or the like. Therefore, it can be easily attached to an already constructed building structure. Furthermore, in addition to directly radiating heat from the light source part to the air layer in the recess, heat conducted from the light source part to the heat radiating member can also be radiated to the air layer in the recess, so that heat can be radiated more efficiently. it can. Therefore, the possibility that the light source unit is damaged can be reduced. Furthermore, since the metal is disposed in the recess by using the metal heat radiating member, it is possible to compensate for the decrease in strength due to the recess of the base member by the strength of the metal. Therefore, it can be used as a building member.

  In the lighting device according to the present invention, the base member is provided with an air flow channel groove formed along the heat dissipation member and to the end of the base member on the lower surface side of the heat dissipation member. May be. By adopting such a configuration, the heat of the light source unit conducted to the heat radiating member can be radiated not only from the upper surface side but also from the back surface side of the heat radiating member to the air flow channel. In addition, the heat conducted to the air channel groove tends to flow from the end of the base member toward the outside air at a low temperature due to a temperature difference and is dissipated, so that the heat of the heat dissipating member can be efficiently dissipated. As a result, it is possible to efficiently dissipate heat from the light source unit.

  Furthermore, the illuminating device concerning this invention WHEREIN: The through-hole connected from the said heat radiating member to the outer surface of the said base member may be formed. By adopting such a configuration, the heat of the light source unit conducted to the heat dissipation member can be radiated to the outside air not only from the upper surface side but also from the back surface side through the through hole. Thereby, the heat of the heat radiating member can be efficiently radiated, and as a result, the heat of the light source unit can be radiated efficiently.

  Furthermore, in the lighting device according to the present invention, a part of the heat radiating member may be embedded in part or all of the through hole of the base member. By further burying a part of the heat radiating member in the through hole, a heat storage region of the heat radiating member through which heat is conducted becomes large, so that more heat can be conducted from the light source part to the heat radiating member. In addition, when a heat radiating member is embedded in all of the through holes, since a part of the heat radiating member is in direct contact with the outside air on the outer surface of the base member, it is possible to prevent heat from staying in the through holes, and to radiate heat more efficiently. It can be performed. Furthermore, by providing another heat radiating member (for example, an iron plate or the like) so as to be in direct contact with the heat radiating member, the amount of heat stored in the heat radiating portion can be increased and the area directly in contact with the outside air can be increased. It can be performed.

  Furthermore, the illuminating device concerning this invention WHEREIN: The said recessed part of the said base member may be extended to either end surface of the said base member. By adopting such a configuration, the recess itself communicates with the outside air, so that the heat in the recess is easily radiated to the outside air. Therefore, the heat of the light source unit and the heat radiating member can be efficiently radiated into the recess.

  Furthermore, the illuminating device concerning this invention WHEREIN: The said heat radiating member may be extended to the end surface of the said base member. By extending the heat dissipating member to the end surface of the base member, it becomes possible to provide other members so as to contact the end surface of the heat dissipating member, such as providing a metal plate on the end surface, increasing the heat storage amount of the heat dissipating part. Since the area in contact with the outside air can be increased, the heat of the heat radiating member can be efficiently radiated.

  Furthermore, the illuminating device concerning this invention WHEREIN: The plate-shaped body which has a width | variety more than twice the width | variety in which the said light source part is mounted may be sufficient as the said heat radiating member. By using a heat radiating member having a longer width, the heat storage area is increased and the heat radiation efficiency to the air layer in the recess can be improved.

  Furthermore, the illuminating device concerning this invention WHEREIN: The said heat radiating member may be equipped with the wall part which protruded upwards on both sides. By providing the wall part protruding upward, the light source part can be installed along the wall part, and the position of the light source part can be easily arranged at a predetermined position. Therefore, it is possible to prevent variation in the position of the light source unit. In addition, the wall portion increases the heat storage area and also increases the area in contact with the outside air, so that it is possible to further improve the heat dissipation efficiency to the air layer of the recess.

  Furthermore, the illuminating device concerning this invention WHEREIN: The said heat radiating member may provide the space between the bottom surfaces of the said recessed part, and may be arrange | positioned. Since an air layer is formed between the back surface of the heat radiating member and the bottom surface of the recess, heat can be radiated from the back surface of the heat radiating member to the air layer. Thereby, the heat of a heat radiating member can be thermally radiated efficiently.

  Furthermore, the illuminating device concerning this invention WHEREIN: The said heat radiating member may be provided with the protrusion part which protrudes in a bottom face, and the said protrusion part may be supported by the bottom face of a recessed part. By adopting such a configuration, the heat dissipating member is disposed with an air layer provided between the bottom surface of the concave portion, and also in the air layer between the back surface of the heat dissipating member and the bottom surface of the concave portion by the protruding portion. Since the heat can be dissipated, the heat dissipating area is increased, and the heat dissipating from the heat dissipating member can be efficiently performed.

  Furthermore, in the lighting device according to the present invention, the heat radiating member may be formed with a screw hole for fixing with a fixing screw for fixing to the base member. Since the illuminating device of the present invention uses wood for the base member, if the screw hole is formed in the heat dissipation member, the heat dissipation member can be easily attached to the base member by the screw.

  Furthermore, in the lighting device according to the present invention, a plurality of combinations of the heat radiating member and the light source unit arranged on the heat radiating member may be arranged in parallel. By adopting such a configuration, a brighter illumination device can be provided.

  Furthermore, the illuminating device concerning this invention WHEREIN: The reflection member may be provided in the both-sides wall surface of the said recessed part. By adopting such a configuration, when the light emitted from the light source unit hits the side surface of the concave portion, the reflectance is increased, and the light can be efficiently collected to the opening of the concave portion.

  Furthermore, the illuminating device concerning this invention WHEREIN: You may provide the light guide member in the light emission side of the said light source part. By adopting such a configuration, it is possible to change the intensity of light that the light emitted from the light source unit reaches the end side according to the translucency of the light guide member. Therefore, the glare of the light irradiated from an edge part can be adjusted by using the light guide member which has various translucency. Further, when the light guide member is disposed and used so as to protrude from the opening of the recess (see, for example, FIG. 12), the light guide member has higher translucency than the light guide member that does not protrude and is used. Should be used. Here, the light guide member refers to a member having a function of emitting light incident from one end surface from the other surface, for example, light from a surface different from the surface emitted by the acrylic plate mixed with the diffusion member. It is possible to use an emitting member, an acrylic member or a glass member having a diffusion function by making a certain surface rough, or the like.

  Furthermore, the illuminating device concerning this invention WHEREIN: The milk half board may be provided in the said base member so that the said recessed part may be covered at least. By adopting the milk half plate, the transmitted light is scattered, so that the possibility that the light source can be seen through can be reduced. Moreover, the light of a light source can be irradiated to a wider range.

  Furthermore, the illuminating device concerning this invention WHEREIN: The flame retardant may be apply | coated to the said base member, or the flame retardant may be infiltrated. By adopting such a configuration, it is possible to avoid the risk of burning a base material made of wood.

  Furthermore, the illuminating device concerning this invention WHEREIN: The wood for construction may be sufficient as the said base member. The illuminating device of the present invention can be used as construction wood as it is when building a building by using construction wood as a base member.

FIG. 1 is a partially cut perspective view showing the lighting device 100 according to the first embodiment. FIG. 2 is an exploded perspective view in which components of the lighting device 100 of FIG. 1 are disassembled. FIG. 3 is a cross-sectional view taken along line AA of the illumination device 100 of FIG. FIG. 4 is a partially cut perspective view of the illumination device 100 according to the second embodiment. FIG. 5 is a diagram illustrating the lighting device 100 according to the third embodiment, FIG. 5A is a cross-sectional view of the lighting device 100, and FIG. 5B is a partially cut perspective view of the base member 30. FIG. 6 is a diagram illustrating the illumination device 100 according to the fourth embodiment, FIG. 6A is a sectional view of the illumination device, and FIG. 6B is a partially cut perspective view of the base member 30. FIG. 7A is a cross-sectional view of the lighting device 100 according to the fifth embodiment, and FIG. 7B is a cross-sectional view illustrating a state in which the second heat radiation member 20a is provided on the bottom surface of the lighting device 100 according to the fifth embodiment. FIG. 8A is a cross-sectional view of the illumination device 100 according to the sixth embodiment, and FIG. 8B is a cross-sectional view showing a modification of the illumination device 100 according to the sixth embodiment. FIG. 9 is a cross-sectional view of the illumination device 100 according to the seventh embodiment. FIG. 10A is a cross-sectional view of the illumination device 100 according to the eighth embodiment, and FIG. 10B is a cross-sectional view illustrating a modification of the illumination device 100 according to the eighth embodiment. FIG. 11: is sectional drawing which shows the modification of the illuminating device 100 concerning 8th Embodiment. FIG. 12 is a cross-sectional view of the illumination device 100 according to the ninth embodiment. FIG. 13: is sectional drawing which shows the modification of the illuminating device 100 concerning 9th Embodiment. FIG. 14 is a partial perspective view showing a modification of the illumination device 100 according to the ninth embodiment. FIG. 15 is a reference perspective view showing a usage state of the illumination device 100 according to the first to ninth embodiments. FIG. 16A is a cross-sectional view illustrating a modified example of the lighting device 100 according to the first to ninth embodiments, and FIG. 16B illustrates another modified example of the lighting device 100 according to the first to ninth embodiments. It is a partially cut perspective view. FIG. 17 is a partially exploded perspective view showing still another modified example of the illumination device 100 according to the first to ninth embodiments.

  Embodiments of the illumination device according to the present invention will be described in detail with reference to the drawings. The embodiments and drawings described below exemplify a part of the embodiments of the present invention, and are not used for the purpose of limiting to these configurations. In the following embodiments, an elongate columnar wood is used as an example of a “wood base member”, and a white light emitting type LED in which surface-mounted LEDs are arranged in series on a substrate as an example of a “light source unit”. The LED will be described using an aluminum heat dissipation member as an example of a “metal heat dissipation member” and a screw as an example of a “screw”.

(First embodiment)
As shown in FIG. 1, the illumination device 100 according to the first embodiment mainly includes a light source unit 10 that emits light, a heat dissipation member 20 in which the light source unit 10 is disposed, and heat dissipation in which the light source unit 10 is disposed. A base member 30 to which the member 20 is attached and a milk half plate 40 are provided. Here, FIG. 1 is a partially cut perspective view showing the illumination device 100 according to the first embodiment, and FIG. 2 is an exploded perspective view in which components of the illumination device 100 according to the first embodiment are disassembled. FIG. 3 is a cross-sectional view taken along line AA of the illumination device 100 of FIG.

  As shown in FIG. 1, the light source unit 10 includes a substrate 11 and a plurality of surface-mounted white light emitting LEDs 12 mounted on the substrate 11 at predetermined intervals. Near the end of the light source unit 10, a power cord 13 for supplying electricity from a power source (not shown) is mounted on the power cord mounting unit 14.

  The heat radiating member 20 is made of aluminum and is formed in a long plate shape. As shown in FIG. 2, on both sides of the heat dissipation member 20 in the short direction, wall portions 21 protruding upward are provided over the entire length along the longitudinal direction. Further, an extending portion 22 is formed on the outer side in the short direction from the wall portion 21 in order to radiate the heat of the heat radiating member 20 more efficiently. In addition, a plurality of screw holes 23 for passing screws 50 for fixing the base member 30 to the arbitrary positions of the heat dissipation member 20 are provided. FIG. 2 shows only the screw hole 23 formed in the vicinity of the end of the heat radiating member 20.

  The base member 30 is a long columnar timber, and a rectangular parallelepiped recess 31 is formed substantially at the center of a surface (hereinafter referred to as “light emitting front 30a”) when it is installed. A power cord through-hole 33 penetrating in the direction is formed. The light source unit 10 and the heat radiating member 20 are placed in the recess 31, the power cord 13 is disposed so as to communicate with the outside through the power cord through hole 33, and connected to an external power source (see FIG. 1). The light is irradiated from the opening 34 of. Furthermore, a positioning recess 36 is provided on the bottom surface 35 of the recess 31 in the same size as the heat dissipation member 20 and shallower than the thickness of the heat dissipation member 20 so that the heat dissipation member 20 can be easily disposed at a predetermined position in advance. Is formed.

  The milk half plate 40 is formed in the same size and shape as the outer periphery of the light emitting front surface 30a of the base member 30. As shown in FIG. A convex plane 41 is provided which is formed in the same size and shape as the outer periphery of the opening 34 of the recess 31 and whose surface 44 side is smaller than the outer periphery of the opening 34. The convex flat surface 41 may be formed integrally with the milk half plate 40, or a convex member created in a separate process may be bonded to the flat milk half plate 40.

  Each of the above components is the lighting device 100 as follows. First, as shown in FIG. 2, the light source unit 10 is attached to the sandwiching plane 24 sandwiched between the two wall portions 21 of the heat dissipation member 20. When the light source unit 10 is attached, the light source unit 10 can be attached in parallel to the longitudinal direction of the heat dissipation member 20 by being attached in parallel to the wall portion 21. Further, even if it is slightly deviated, the wall portion 21 is arranged so that the light source portion 10 is arranged in a range suitable for the light source portion 10 when the lighting device 100 is manufactured by being attached to the clamping plane 24 in the wall portion 21. Is formed. Next, the power cord 13 is soldered to the power cord mounting portion 14 of the light source unit 10. Thereafter, the heat radiating member 20 is disposed in the positioning recess 36 of the base member 30 so that a part of the power cord 13 is disposed outside through the power cord through-hole 33, and a screw hole is formed using a fixing screw 50. It fixes to the base member 30 via 23. Then, as shown in FIG. 3, after attaching the reflection sheet 60 to the wall surfaces 31 a on both sides of the recess 31, the milk half plate 40 is fitted into the opening 34 and fixed so that the boundary 43 with the back surface is caught. . With this convex plane 41, the milk half plate 40 can always be attached to a predetermined position with respect to the opening 34 of the base member 30.

  Thus, in the manufactured lighting device 100, the light emitted from the light source unit 10 is directly or indirectly reflected by the reflection sheet 60 and incident on the milk half plate 40 and diffused in the milk half plate 40. The surroundings can be illuminated with light.

  According to the lighting device 100 according to the first embodiment, since the base member 30 is wood, it can be easily fixed to a pillar, wall, ceiling, or the like using a nail or an adhesive. In addition, since the side surface can exhibit the texture of wood, it is possible to provide the lighting device 100 that is suitable for design in a wood-based room, a shrine and a Buddhist temple, or the like. Further, since the base member 30 is made of wood, the weight can be significantly reduced as compared with a lighting device using the base member 30 made of an iron plate or an iron lump. Therefore, the illuminating device 100 which can reduce the labor at the time of installation significantly can be provided. In addition, by adopting the wooden base member 30, when the recess 31 is produced, it can be processed by NC processing or the like, so that it is easier to process than when the base member is produced by bending an iron plate. In addition to the above, the concave portion 31 having an accurate dimension can be produced.

  Moreover, since the positioning recessed part 36 which can arrange | position the attachment position of the heat radiating member 20 in the predetermined position is provided in the bottom face 35 of the recessed part 31, it arrange | positions in a fixed position, without shifting | deviating when attaching the heat radiating member 20. be able to. Even when the heat radiating member 20 is fixed to the base member 30 using the screws 50 in this arrangement, the heat radiating member 20 can be prevented from moving when the screws 50 are attached. Screw 50 can be attached without doing.

  Furthermore, since the heat radiation member 20 is provided with the wall portions 21 on both sides in the lateral direction, the light source unit 10 can be easily attached to a predetermined position. Furthermore, the reduced strength of the wood can be reinforced by disposing the aluminum heat-dissipating member 20 on the bottom surface 35 of the recess 31 by reducing the strength by forming the recess 31 in the base member 30. Since the heat radiation member 20 is provided with the wall portion 21 and the extending portion 22 outside the wall portion 21, the heat of the light source portion 10 is efficiently radiated from the wall portion 21 and the extending portion 22 to the air in the recess 31. be able to.

  Furthermore, according to the illuminating device 100 concerning 1st Embodiment, since the milk half plate 40 is provided so that the opening 34 of the recessed part 31 may be covered, the light of the light source part 10 is diffused and light is irradiated to a wide range. can do. Moreover, when the illumination device 100 is visually recognized, the light source unit 10 and the heat dissipation member 20 can be prevented from being directly visually recognized.

  Hereinafter, modified examples of the lighting device 100 according to the first embodiment will be described from the second embodiment to the ninth embodiment.

(Second Embodiment)
An illumination device 100 according to the second embodiment is shown in FIG. FIG. 4 is a perspective view of the illumination device 100 according to the second embodiment. In the illumination device 100 according to the second embodiment, the recess 31 of the base member 30 penetrates to the end surface 32 of the base member 30 while the recess 31 of the illumination device 100 according to the first embodiment is a substantially rectangular parallelepiped. Is different. Further, the end surface 25 of the heat radiating member 20 extends to the end surface 32 of the base member 30 and is formed so as to be disposed on the same plane as the end surface 32 of the base member 30. Other configurations are the same as those of the first embodiment.

  According to the second embodiment, since the concave portion 31 is formed up to the end face 32 of the base member 30, the air in the concave portion 31 communicates with the outside air, so that the heat in the concave portion 31 is radiated to the outside air. be able to. For this reason, when the end surface 32 is opened and disposed, a heat radiation effect can be efficiently exhibited.

(Third embodiment)
A lighting device 100 according to the third embodiment is shown in FIG. FIG. 5A is a cross-sectional view of the illumination device 100 according to the third embodiment, and FIG. 5B is a perspective view of the base member 30. In the lighting device 100 according to the third embodiment, the air channel groove 37 having a substantially U-shaped cross section is formed in the longitudinal direction on the bottom surface 35 of the recess 31 with respect to the base member 30 of the lighting device 100 of the second embodiment. It is formed to the end surface 32 along. Other points are the same as in the second embodiment.

  According to the third embodiment, the heat of the heat dissipating member 20 is radiated from the upper surface side to the air layer, and is also conducted from the back surface side to the air layer in the air channel groove 37, and the heat of the air layer. Can radiate heat from the end face 32 to the outside air. The lighting device 100 according to the second embodiment can efficiently exhibit a heat dissipation effect when the end face 32 is disposed open.

(Fourth embodiment)
A lighting device 100 according to a fourth embodiment is shown in FIG. FIG. 6A is a cross-sectional view of the illumination device 100 according to the fourth embodiment, and FIG. 6B is a perspective view of the base member 30 (however, the positioning recess 36 is omitted). The base member 30 of the lighting device 100 according to the fourth embodiment is provided with a through hole 38 penetrating from the bottom surface 35 of the recess 31 to the bottom surface that is the outer surface of the base member 30 with respect to the lighting device 100 according to the second embodiment. It has been. The through hole 38 has a long hole-shaped opening having a long side in the longitudinal direction. Other points are the same as in the second embodiment.

  According to the fourth embodiment, in addition to radiating heat from the upper surface side of the heat radiating member 20 to the air layer, the heat is conducted from the back surface side of the heat radiating member 20 to the air layer in the through hole 38, and the heat of the air layer is Heat can be radiated from the bottom to the outside air. For this reason, the illuminating device 100 concerning 4th Embodiment can exhibit the thermal radiation effect efficiently, when the bottom face side of the base member 30 is open | released.

  In the fourth embodiment described above, the opening is a through hole having a long hole shape. However, the present invention is not limited to this, and the opening shape may be any shape such as a round hole or a rectangular hole.

(Fifth embodiment)
A lighting device 100 according to a fifth embodiment is shown in FIG. 7A. FIG. 7A is a cross-sectional view of the illumination device 100 according to the fifth embodiment. The illumination device 100 according to the fifth embodiment includes an embedded portion 26 having a shape substantially the same as the shape of the through hole 38 of the base member 30 on the back surface of the heat radiating member 20 as compared with the fourth embodiment. The difference is that the portion 26 is embedded in the through hole 38. Other configurations are the same as those of the fifth embodiment. The embedded portion 26 may be formed integrally with the heat radiating member 20 or may be formed separately.

  According to the fifth embodiment, the volume of the heat radiating member 20 can be increased, and the amount of heat that can be accumulated in the heat radiating member 20 can be increased. Therefore, more heat can be conducted from the light source unit 10. Furthermore, since a part of the heat radiating member 20 is in direct contact with the outside air, the heat radiating effect can be exhibited more efficiently. The illumination device 100 according to the fifth embodiment can efficiently exhibit a heat dissipation effect when the bottom surface side of the base member 30 is opened.

  In the fifth embodiment described above, as shown in FIG. 7B, a second heat radiating member 20 a made of a metal such as an iron plate may be further disposed on the bottom surface side of the base member 30. By adopting such a configuration, in addition to the heat radiating member 20, the heat storage area can be increased by the second heat radiating member 20a, and the heat radiating area in contact with the outside air can be increased. Therefore, heat can be radiated more efficiently. Further, by disposing the second heat radiating member 20a made of an iron plate or the like, a metal having a higher strength than wood is provided on the back surface of the base member 30, so that the strength of the entire base member 30 can be increased.

(Sixth embodiment)
A lighting device 100 according to a sixth embodiment is shown in FIG. 8A. FIG. 8 is a cross-sectional view of the illumination device 100 according to the sixth embodiment. The illuminating device 100 according to the sixth embodiment is different from the second embodiment in that the heat dissipating member 20 is arranged at a distance from the bottom surface 35 of the recess 31 and between the back surface of the heat dissipating member 20 and the bottom surface 35 of the recess 31. The difference is that an air layer is formed. The heat dissipation member 20 of the sixth embodiment is made wider than the width of the recess 31, while the base member 30 can insert the extended portions 22 of the heat dissipation member 20 into the wall surfaces 31 a on both sides of the recess 31. A support groove 39 is formed at the same height of the wall surface 31a along the longitudinal direction. By inserting the heat dissipating member 20 from the end surface side along the groove along the longitudinal direction, the heat dissipating member 20 is supported in a form floating at a distance from the bottom surface 35 of the concave portion 31, and the rear surface of the heat dissipating member 20 and the concave portion 31 are supported. An air layer is formed between the bottom surface 35 and the bottom surface 35.

  According to this 6th Embodiment, since air exists in both the front side and the back side of the heat radiating member 20, the heat of the heat radiating member 20 can be radiated to the air of both sides. Therefore, the heat dissipation effect can be exhibited more efficiently.

  In the embodiment described above, the means for disposing the heat dissipation member 20 at a distance from the bottom surface 35 of the recess 31 is not particularly limited. For example, as illustrated in FIG. 8B, a protruding portion 27 that protrudes may be formed on the back surface of the heat radiating member 20, and the protruding portion 27 may be supported by the bottom surface 35 of the recess 31.

  If such a configuration is adopted, when the heat radiating member 20 is installed in the concave portion 31, the heat radiating member 20 is disposed by providing an air layer with respect to the bottom surface 35 of the concave portion 31 by the protruding portion 27. Since it functions as a heat radiating region that radiates heat to the air layer, the heat radiating member 20 can dissipate heat more efficiently.

(Seventh embodiment)
A lighting device 100 according to a seventh embodiment is shown in FIG. FIG. 9 is a cross-sectional view of the illumination device 100 according to the seventh embodiment. The lighting device 100 according to the seventh embodiment is formed so that the wall surface 31a of the recess 31 of the base member 30 is widened from the middle toward the opening 34 with respect to the second embodiment. And an opening having a size substantially the same as that.

  According to the seventh embodiment, when the milk half plate 40 is attached, light can be incident on a wider range of the milk half plate 40. Therefore, the area of light irradiated from the milk half plate 40 can be widened.

(Eighth embodiment)
The illuminating device 100 concerning 8th Embodiment is shown by FIG. 10A. FIG. 10A is a cross-sectional view of the illumination device 100 according to the eighth embodiment. The lighting device 100 according to the eighth embodiment is made of a highly transparent methacrylic resin formed in the same shape as the inner shape of the recess 31 of the base member 30 with respect to the second embodiment, and is on the light source unit 10 side. A light guide member 90 for irradiating light incident from one end surface 91 of the other end surface 92 from the other end surface 92 is disposed. Other configurations are the same as those of the second embodiment.

  According to the illuminating device 100 according to the eighth embodiment, since the light emitted from the light source unit 10 can change the intensity of the light reaching the end surface side according to the translucency of the light guide member 90, For example, if the light guide member 90 with relatively low translucency is arranged, the light diffuses and the light irradiated from the end surface becomes gentle, and the glare visually recognized by the light emitted from the end surface can be reduced.

  In the eighth embodiment described above, the milk half plate 40 is disposed on the light emitting front surface 30a of the base member 30, but is formed so as to be disposed only on the other end surface 92 of the light guide member 90 as shown in FIG. 10B. May be.

  In the above-described eighth embodiment, the milk half plate 40 is adopted. However, the milk half plate 40 may be omitted by forming the other end surface 92 of the light guide member 90 on a rough surface. . By forming the other end surface 92 as a rough surface, it is possible to prevent the light from the light source unit 10 from being directly recognized. Therefore, when the viewer visually recognizes it, it is not recognized dazzlingly. In addition, since the light can be diffused in a wider range by being formed on the rough surface, the light can be irradiated over a wide range. Furthermore, by forming it into a rough surface, it is possible to reduce the possibility that the light source unit 10 and the heat radiating member 20 are directly visually recognized. In addition, as a method of making the other end surface 92 rough, a method of grinding with a sandblast, a cutting tool, or a polishing agent can be considered. Moreover, you may form in a rough surface shape by sticking the tape and seal | sticker which have a spreading | diffusion function on the surface of the other end surface formed in the smooth surface.

  Furthermore, in the above-described eighth embodiment, a rectangular parallelepiped recess 31 is used as the recess 31 of the base member 30, but as shown in FIG. 11, the base member 30 described in the eighth embodiment is used. You may arrange | position the light guide member 90 formed in the shape similar to the internal shape of the recessed part 31 of the base member 30. FIG.

  In the above-described eighth embodiment, a highly transparent methacrylic resin plate is used as the light guide member 90. However, as long as the material has transparency, a methacrylate such as methyl methacrylate or ethyl methacrylate is used. Various materials such as resin, acrylic resin such as methyl acrylate and ethyl acrylate, polycarbonate, and polyethylene can be used. Moreover, the light guide member does not need to be colorless and transparent, and may be colored and transparent. Furthermore, the light guide member may be added with a fine particle diffusion member capable of diffusing visible light, or a resin plate coated or added with a fluorescent agent that emits fluorescence when irradiated with visible light or ultraviolet light. You can use

(Ninth embodiment)
The illumination device 100 according to the ninth embodiment is shown in FIG. The illumination device 100 according to the ninth embodiment is different from the second embodiment from the one end face 91 on the side of the light source 10 having a plate-like translucency having the same thickness as the width of the recess 31 of the base member 30. A light guide plate-shaped light guide member 90 made of methacrylic resin that irradiates incident light from the other end surface 92 is disposed so as to extend from the light emitting front surface 30a. In the illumination device 100 according to the ninth embodiment, the milk half plate 40 is not used. The other end surface of the light guide member 90 is formed to be a rough surface as in the eighth embodiment, and light can be irradiated from the other end surface 92 over a wide range.

  Since the light guide member 90 extends from the base member 30, the other end surface 92, which is an irradiation region, exists at a position away from the base member 30. Therefore, the lighting device 100 having a three-dimensional effect can be obtained by the light irradiated from a position away from the base member 30 and the light irradiated from the main surface 93 adjacent to the other end surface of the light guide member 90.

  In the ninth embodiment described above, the other end surface 92 of the light guide member 90 is formed to be parallel to the one end surface 91. However, as shown in FIG. 13, the other end surface 92 is inclined in a certain direction. The other end surface 92 may be formed on the inclined surface. By adopting such a configuration, as shown by the arrow in FIG. 13, it is possible to irradiate light more strongly in a certain direction according to the inclined surface. For example, when the lighting device 100 is disposed at a high indoor position, it is effective to use the lighting device 100 whose end face is inclined downward so that light is irradiated downward in the indoor space.

  In the ninth embodiment described above, the main surface 93 adjacent to the one end surface 91 is formed as a smooth surface, but the one end surface 91 of the light guide member 90 is formed on the main surface 93 on both sides of the light guide member 90. A plurality of diffusion recesses or diffusion protrusions 94 that lead out light incident from the light source unit 10 as diffused light may be formed. As an example of the plurality of diffusion recesses, as shown in FIG. 14, a plurality of quadrangular pyramid-shaped diffusion dots may be formed on both main surfaces. In addition, although not shown, it is not limited to dots and may be formed by grooves. The processing method at this time may be ultrasonic processing or laser processing. On the other hand, the diffusion convex portion may be formed by dots that are raised on the main surface, or may be formed in a raised line shape. In order to form the diffusion convex portion, for example, it may be formed to be raised (convex) by screen printing, silk printing, or the like. By adopting such a configuration, in addition to the other end surface 92 facing the one end surface 91, the light of the light source unit 10 incident from the one end surface of the light guide plate is also transmitted from the main surfaces 93 on both sides adjacent to the one end surface 91. Diffuse light can be emitted. Therefore, the diffusion recesses or the diffusion protrusions can be clearly visually recognized by the light emitted from the diffusion recesses or the diffusion protrusions 94 of the main surface 93, and the lighting device 100 having the main surface with high design can be obtained. Further, the light irradiated from the other end surface 92 and the light diffused from the main surfaces 93 on both sides interfere with each other, and can be visually recognized as emitting light more three-dimensionally.

  In the ninth embodiment described above, a highly transparent methacrylic resin plate is used as the light guide member 90. However, as long as the material has transparency, a methacrylate such as methyl methacrylate or ethyl methacrylate is used. Various materials such as resin, acrylic resin such as methyl acrylate and ethyl acrylate, polycarbonate, and polyethylene can be used. Moreover, the light guide member does not need to be colorless and transparent, and may be colored and transparent. Furthermore, the light guide member may be added with a fine particle diffusion member capable of diffusing visible light, or a resin plate coated or added with a fluorescent agent that emits fluorescence when irradiated with visible light or ultraviolet light. May be used.

  The lighting device 100 described in the first to ninth embodiments is attached to, for example, an indoor beam in a Japanese house as shown in FIG. 15A, or attached to the ocean as shown in FIG. 15B. It is used as a lighting device 100 for indirect lighting. Since the lighting device 100 according to the present embodiment has the base member 30 made of wood, it can be easily attached to a pillar or the like with a nail, an adhesive, or the like.

  In addition, this invention is not limited to 1st Embodiment to 9th Embodiment mentioned above at all, and as long as it belongs to the technical scope of this invention, it cannot be overemphasized that it can implement with a various aspect.

  In the first to ninth embodiments described above, a white light emitting LED is used as the light source unit 10, but the present invention is not limited to this, and an organic light emitting diode, a cold cathode tube, a neon tube, or the like is used. Can do.

  In the first to ninth embodiments described above, the light emission color of the light source unit 10 is white. However, the present invention is not limited to this, and red, orange, yellow, green, blue, and indigo are used. Any color such as color or purple may be used, or a combination of these colors may be used.

  Further, in the first to ninth embodiments described above, only one row of the light source units 10 is arranged. However, as shown in FIG. 16A, a plurality of light source units 10 and a plurality of heat radiating members are arranged in parallel. May be. By adopting such a configuration, stronger light can be irradiated.

  In the first to ninth embodiments described above, the wall surface 31a of the base member 30 is formed as a closed wall surface. However, as shown in FIG. 16B, a communication hole 30b communicating with the outside air is provided. May be. By adopting such a configuration, a region where the heat of the air in the recess 31 can be radiated to the outside air is increased, so that the heat radiation effect can be improved.

  Further, in the first to ninth embodiments described above, the base member 30 is an integral member, but as shown in FIG. 17, a member composed of a plurality of parts 30c and 30d may be assembled. Since the base member 30 is made of wood, it can be easily assembled with an adhesive or a nail.

  In the first to ninth embodiments described above, a flame retardant may be applied to or penetrated into the base member 30. By adopting such a configuration, it is possible to avoid the risk of burning wood.

  In the first to eighth embodiments described above, 100 is described with the milk half plate 40 attached, but the milk half plate 40 may not be provided.

  As shown in the embodiment described above, it can be used as a lighting device.

DESCRIPTION OF SYMBOLS 10 ... Light source part, 11 ... Board | substrate, 12 ... White light emission type LED, 13 ... Power supply cord,
14 ... Power cord mounting portion, 20 ... Heat radiating member, 20a ... Second heat radiating member, 21 ... Wall portion,
22 ... Extension part, 23 ... Screw hole, 24 ... Nipping plane, 25 ... End face, 26 ... Buried part,
27 ... Projection part, 30 ... Base member, 30a ... Light emission front surface, 30b ... Communication hole, 30c ... Parts,
31 ... Recessed part, 31a ... Wall surface, 32 ... End face, 33 ... Through hole for power cord, 34 ... Opening,
35 ... bottom surface, 36 ... positioning recess, 37 ... air channel groove, 38 ... through hole, 39 ... support groove, 40 ... milk half plate, 41 ... convex plane, 50 ... screw, 60 ... reflection sheet, 90 ... guide Optical member,
91 ... One end surface, 92 ... Other end surface, 93 ... Main surface, 94 ... Diffuse convex part, 100 ... Illuminating device

Claims (17)

A wooden base member having a recess at least in part;
A light source unit disposed in the recess and having an LED for emitting light;
The light source part is disposed on the upper surface, and a metal heat dissipating member having a larger area than the light source part for dissipating heat of the light source part,
An illumination device comprising:   The said base member is provided with the flow-path groove | channel for air formed in the lower surface side of the said heat radiating member along the said heat radiating member and to the edge part of the said base member. The lighting device described.   The lighting device according to claim 1, wherein the base member has a through hole that communicates from the heat dissipation member to an outer surface of the base member.   The lighting device according to claim 3, wherein a part of the heat radiating member is further embedded in a part or all of the through hole of the base member.   5. The lighting device according to claim 1, wherein the concave portion of the base member extends to any one end surface of the base member.   The lighting device according to claim 1, wherein the heat radiating member is extended to an end surface of the base member.   The lighting device according to claim 1, wherein the heat radiating member is a plate-like body having a width that is twice or more a width on which the light source unit is placed.   The lighting device according to claim 1, wherein the heat dissipating member includes wall portions protruding upward on both sides.   The lighting device according to claim 1, wherein the heat radiating member is disposed with a space between the bottom surface of the concave portion.   The lighting device according to claim 1, wherein the heat radiating member includes a protruding portion that protrudes from a bottom surface, and the protruding portion is supported by the bottom surface of the concave portion.   The lighting device according to any one of claims 1 to 10, wherein a screw hole for fixing the heat radiating member with a fixing screw for fixing to the base member is formed.   The lighting device according to any one of claims 1 to 11, wherein a plurality of combinations of the heat radiating member and the light source unit disposed on the heat radiating member are arranged in parallel.   The lighting device according to any one of claims 1 to 12, wherein a reflecting member is provided on both side wall surfaces of the recess.   The lighting device according to any one of claims 1 to 13, further comprising a light guide member on a light emitting side of the light source unit.   The illuminating device according to claim 1, wherein a milk half plate is provided on the base member so as to cover at least the concave portion.   The lighting device according to any one of claims 1 to 15, wherein the base member is coated with a flame retardant or is infiltrated with the flame retardant. The lighting device according to any one of claims 1 to 16, wherein the base member is wood for construction.

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