JP3201524U - Lighting device - Google Patents

Abstract

An illumination device that can be easily retrofitted to furniture, reduces glare of illumination by LEDs, and improves the durability of LEDs. The light emitting unit includes an LED as a light source, a base member, and an outer cover. The light emitting unit 10 and the outer cover 70 are attached to the base member 40. The light emitting unit 10 includes an LED 20, a lens unit 30, and a blind cover 35. The lens 31 of the lens unit 30 is a concave lens. Unevenness is provided in the transparent area of the outer cover. The base member 40 is divided into a first member 41 and a second member 51. The heat of the LED 20 is released by the heat radiating plate 80 and the heat radiating holes. [Selection] Figure 2

Description

  The present invention relates to an illuminating device, and more particularly to an illuminating device used for illuminating the surroundings of furniture such as a bed or a stationary shelf.

  The prior art discloses a lighting device for furniture that is embedded in a headboard of a bed (see Patent Document 1). In the furniture lighting device disclosed in Patent Document 1, a high-brightness LED is provided in a space inside a headboard of a bed, and a substrate on which the LED is mounted is attached to an opening on one side of the space. A plate having a prism-like blade shape is mounted in the opening in a manner of fitting. Then, the white light emitted from the LED spreads through the plate, and the light from the LED irradiates the range from the user's bedside to the foot on the mattress.

  Another prior example also discloses a bed in which a lighting device is embedded in a headboard (see Patent Document 2). The illumination device disclosed in Patent Document 2 reflects light emitted from a lateral LED in the longitudinal direction of the bed with a reflection plate, and adjusts the height of the reflected light by the action of the light guide plate. It is said that unpleasant glare (glare of unpleasant light glare) for the user can be reduced.

JP 2003-229018 A JP 2014-10940 A

  In the illuminating device disclosed in Patent Document 1, the light of the LED is diffused by the action of the plate having a prismatic blade shape to reduce glare, and in the illuminating device disclosed in Patent Document 2, The glare of LED light is reduced by the action of the reflector and the light guide plate. However, since they are all installed in the bed headboard in an embedded form, it is difficult to install them on the bed headboard by retrofitting. There is an inconvenience that an installation space must be formed.

  Moreover, as a countermeasure for reducing the glare of the light of the LED, the one in Patent Document 1 only uses the action of a plate having a prism-like blade shape. Are installed sideways, and the height of the light reflected by the reflector is merely adjusted using the light guide plate in relation to the height of the eyes of the user. Therefore, it can be said that it is difficult to significantly reduce the glare of the LED light.

  The present invention has been made in view of the above situation, and is not limited to a headboard of a bed, but can be easily installed on various types of furniture such as storage shelves and tables by retrofitting LED. An object of the present invention is to provide an illuminating device that can reduce the glare of light through the diffusion of light.

  Another object of the present invention is to provide an illuminating device that can further improve the glare by taking measures that can exhibit multiple light diffusion effects of LEDs.

  Furthermore, the present invention provides a durable LED by enabling excessive heat generation to be suppressed even when the LED and electronic components necessary for causing the LED to emit light are mounted on the same compact circuit board. The purpose is to improve sex.

  The illuminating device according to the present invention includes a light emitting unit that uses an LED as a light source, a base member that can be attached to a counterpart member, and an outer cover that is disposed to cover the light emitting unit. The light emitting unit and the outer cover are attached to the base member, and the light emitting unit is disposed opposite to the LED as a light source and diffuses and transmits the light. A lens unit including a lens and a blindfold cover including an opening into which the lens of the lens unit is fitted, and the outer cover includes a transparent region that transmits the light transmitted through the lens and diffused. And having a shape covering the light emitting unit and the base member.

  According to the illuminating device thus configured, the light emitting unit and the outer cover that constitute the illuminating device are attached to the base member that also constitutes the illuminating device, so that the entire illuminating device is provided. Is configured as a compact unit. Since the base member can be attached to the counterpart member, the light emitting unit and the outer cover can be attached to the counterpart member via the base member simply by attaching the base member to the counterpart member.

  The present invention adopts a configuration in which the lens is a concave lens, and an uneven surface that exerts an action of diffusing transmitted light is provided on one or both outer surfaces of the transparent region of the lens and the outer cover. Is possible. If this configuration is adopted, the LED light is not only diffused by the concave lens and transmitted through the transparent area of the outer cover, but also the concave lens or the transparent area of the outer cover, or irregularities provided on one of the outer surfaces thereof. Diffused through the concave lens and the transparent area of the outer cover. As a result, the light from the LED is diffused in multiple layers, thereby greatly reducing glare.

  In the present invention, the base member includes a first member, a second member to which the light emitting unit is attached, and an attachment / detachment mechanism used for attaching / detaching the second member to / from the first member. Each of the first and second members is provided with an overlapping portion with respect to the counterpart member, and the first mounting screw used for mounting the first member on the counterpart member is provided on the first member. The insertion hole portion is provided, whereas the second member is provided with a boss portion capable of screwing a second mounting screw used for mounting the second member to the counterpart member. Can be adopted. According to this configuration, by using the insertion hole portion of the first member, it is possible to attach the first member to the counterpart member using the first mounting screw. Further, by using the boss portion of the second member, it is possible to attach the second member to the counterpart member using the second mounting screw. For this reason, it is possible not only to attach the light emitting unit or the second member to which the outer cover is attached to the first member attached to the counterpart member, but also to attach the light emitting unit. It is also possible to directly attach the second member to which the outer cover is attached to the counterpart member.

  In the present invention, the attachment / detachment mechanism is provided at a tip of a support column protruding from a plurality of locations of the first member and at a plurality of locations of the second member, and the second member is connected to the first member. It is desirable to adopt a configuration in which the projection piece is engaged with the claw portion as a counterpart through an operation of superimposing on one member. According to this, the entire lighting device can be attached to the counterpart member by simply performing a simple operation of superimposing the second member attached with the light emitting unit or the outer cover on the first member attached to the counterpart member. It is possible.

  In the present invention, the LED as the light source is mounted on the same circuit board together with the electronic components necessary for causing the LED to emit light, and the circuit board is fixed to the base member in an overlapping manner. It is desirable that an opening as a heat radiating hole is formed in an overlapping region of the base member with the heat radiating plate. With this configuration, excessive heat generation of the LED and the electronic component is suppressed by heat dissipation by the heat sink, and the durability of the LED is improved.

  In the present invention, the LED as the light source is mounted on the same circuit board together with the electronic components necessary for causing the LED to emit light, and the circuit board is fixed to the second member in an overlapping manner. It is desirable to be attached to the plate in an overlapping manner. With this configuration, excessive heat generation of the LED and the electronic component is suppressed by heat dissipation by the heat sink, and the durability of the LED is improved.

  In the present invention, an opening as a heat radiating hole may be formed in a region where the second member is overlapped with the heat radiating plate, and the portion of the first member facing the formation portion of the opening of the second member In addition, an opening as a heat dissipation hole may be formed. By taking these measures, the durability of the LED is further improved.

  As described above, according to the present invention, it is easy to retrofit and install on various types of furniture such as bed headboards and other storage shelves and tables. In addition, it is possible to provide an illuminating device that can greatly reduce the glare of light through the diffusion action of the light of LEDs. Furthermore, even if an LED or an electronic component necessary for causing the LED to emit light is mounted on the same compact circuit board, excessive heat generation can be suppressed and the durability of the LED can be improved. Is possible.

It is the top view which showed explanatoryally the whole illuminating device which concerns on embodiment of this invention. It is sectional drawing which follows the II-II line | wire of FIG. It is a top view of the 1st member which constitutes a base member. It is a top view of the 2nd member which constitutes a base member. It is a top view of a blindfold cover. It is sectional drawing which showed the structure and effect | action of the attachment / detachment mechanism. It is an expanded sectional view which follows the VII-VII line of FIG. It is a top view of a lens unit. It is an expanded sectional view of the part which follows the IX-IX line of FIG. It is the X section enlarged view of FIG. It is sectional drawing which showed the attachment structure of an outer cover and a blindfold cover. It is explanatory drawing of the light emission unit by a modification. It is the XIII section enlarged view of FIG. It is the XIV section enlarged view of FIG. It is sectional drawing which illustrated the start step of the installation procedure of an illuminating device. It is sectional drawing which illustrated the last stage of the installation procedure of an illuminating device. It is sectional drawing of the installation state of the illuminating device with respect to a headboard. It is sectional drawing which illustrated the start step of the other installation procedure of an illuminating device. It is sectional drawing which illustrated the last stage of the other installation procedure of an illuminating device. It is sectional drawing of the installation state with respect to a head board.

  FIG. 1 is a plan view illustrating the entire illumination device according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line II-II in FIG. 3 is a plan view of the first member 41 constituting the base member 40, FIG. 4 is a plan view of the second member 51 constituting the base member 40, and FIG. 5 is a plan view of the blind cover 35. It is.

  As shown in FIGS. 1 and 2, the lighting device includes a light emitting unit 10 including an LED 20, a base member 40 for mounting the lighting device on a counterpart member (not shown), the light emitting unit 10, and the like. And a transparent outer cover 70 that is disposed over the surface.

  As shown in FIG. 1, the base member 40 includes a first member 41, a second member 51, and an attachment / detachment mechanism 61 for both of them.

  As shown in FIGS. 1 to 3, the first member 41 is a resin molded body having a substantially rectangular shape in a plan view, and includes an edge frame portion 42 that protrudes on the back side thereof, and an end surface of the edge frame portion 42 is described later. It is formed as an overlapping portion 43 with respect to the counterpart member. In addition, insertion holes 44 and 44 for first mounting screws (not shown) are provided at two locations on the left and right ends of the first member 41. On the other hand, as shown in FIG. 1, FIG. 2 or FIG. 4, the second member 51 is also a resin molded body having a substantially rectangular shape in plan view, and includes an edge frame portion 52 protruding on the back surface side. An end surface of the portion 52 is formed as an overlapping portion 53 with respect to a counterpart member described later. Also, boss portions 54 and 54 to which a second mounting screw (not shown) can be screwed are provided at two positions on the left and right end portions of the second member 51. The edge frame portion 52 of the second member 51 can be fitted to the outside of the edge frame portion 42 of the first member 41. In the fitted state, the second member 51 is attached to the first member 41 as shown in FIG. The overlapping portions 43 and 53 of the respective members 41 and 51 are positioned flush with each other. Further, the switch 22 is attached to the second member 51 as shown in FIG. 1, FIG. 2 or FIG. 4, and the LED 20 is turned on or off by operating the push button 23 of the switch 22. Can do. In addition, an electric cord (not shown) connected to the terminal 24 of the switch 22 is pulled out to the back through a notch 59 provided in a recessed shape in the second member 51.

  The attachment / detachment mechanism 61 is provided over four corners of the base member 40 that is substantially rectangular in plan view. In FIG. 6, the structure of the attachment / detachment mechanism 61 is shown with sectional drawing with the effect | action. As shown in the figure, the attachment / detachment mechanism 61 includes a claw portion 63 provided at the tip of the support column 62 protruding from the first member 41 and a protruding piece portion 64 provided on the second member 51. As can be seen from FIG. 3, the support column 62 is formed in a flat plate shape having a vertically rising posture. On the other hand, as can be seen from FIG. 4, the protruding piece 64 is provided in a form protruding into the opening 65 provided at the corner of the second member 51. Then, as shown by an arrow in FIG. 6, when the second member 51 is overlapped with the first member 41 from the position facing the first member 41 and the claw portion 63 is inserted through the opening 65, The part 63 is elastically deformed and climbs over the projecting piece part 64 that is the counterpart, so that the resiliently restored projecting piece part 64 is engaged with the claw part 63 and the second member 51 is attached to the first member 41. . Further, when the engagement between the claw portion 63 and the projecting piece portion 64 is released and the second member 51 is removed from the first member 41, the claw portion 63 or the column 62 is pressed as shown by the arrow a in FIG. After retracting 63 from the position of engagement with the projecting piece 64, the second member 51 is pulled away from the first member 41, and the claw 63 is extracted from the opening 65.

  As shown in FIG. 1 or FIG. 2, the light emitting unit 10 is attached to the second member 51. The light emitting unit 10 includes the LED 20 as a light source, a lens unit 30, and an opaque blind cover 35.

  The LED 20 is mounted on the same rectangular circuit board 21 together with electronic components necessary for causing the LED 20 to emit light, such as a resistance element (not shown). And the circuit board 21 is fixed to the surface of the heat sink 80 made of a rectangular aluminum material in an overlapping manner with a heat dissipating adhesive. The heat radiating plate 80 is attached to the second member 51 in an overlapping manner, and the attachment structure is shown in FIG. 7, in addition to FIGS. FIG. 7 is an enlarged sectional view taken along line VII-VII in FIG. As shown in FIG. 1, FIG. 4 or FIG. 7, pillars 81 having locking claws 82 at the top are provided at four locations of the second member 51. The heat radiating plate 80 is positioned in the width direction by the four support columns 81... And is lifted from the second member 51 by the four locking claws 82. Further, the heat radiating plate 80 is positioned in the longitudinal direction by projecting pieces 83, 83 provided at two locations of the second member 51.

  FIG. 8 is a plan view of the lens unit 30, and FIG. 9 is an enlarged cross-sectional view of a portion along the line IX-IX in FIG. As shown in FIG. 8, the lens unit 30 has a flange portion 32 around a circular lens 31 in plan view, and projections 33 are provided at four locations on the flange portion 32. As shown in FIG. 9, these protrusions 33... Are inserted into a cylindrical column 55 protruding from the second member 51. The cylindrical support | pillar 55 is provided in four places of the 2nd member 51 like FIG. 1 or FIG. The lens unit is made of a resin molded body, and the lens 31 is configured as a concave lens whose surface is recessed in a spherical shape. In this way, the lens 31 of the lens unit 30 attached to the above-described four cylindrical columns 55... Is disposed opposite to the LED 20 with a gap as shown in FIG.

  FIG. 10 is an enlarged view of a portion X in FIG. As shown in FIG. 2 or FIG. 5, the blind cover 35 has an opening 36 at the center and bosses 37, 37 at two places on the left and right. As shown in FIG. 10, the two boss portions 37, 37 are attached to the mounting screw insertion hole portions 56 provided at the two left and right positions of the second member 51, so that the mounting screw insertion hole portion is provided. A mounting screw 38 inserted through 56 is screwed into the boss portion 37. Thereby, the blindfold cover 35 is attached to the second member 51. Thus, when the blindfold cover 35 is attached to the second member 51, the peripheral edge of the opening 36 of the blindfold cover 35 overlaps with the flange 32 of the lens unit 30 as shown in FIG. Whereas the entire second member 51 to which the LED 20, the heat sink 80 and the like are attached is covered with the blind cover 35.

  Next, the outer cover 70 is made of a transparent resin molded body having a transparent area as a whole, and can be attached to and detached from the blindfold cover 35 described above. FIG. 11 is a cross-sectional view showing a mounting structure between the outer cover 70 and the blind cover 35. As shown in the figure, the front and rear side walls 71, 71 of the outer cover 70 are provided with engagement holes 72, 72, whereas the blind cover 35 corresponds to the engagement holes 72, 72. Engagement protrusions 39 are provided. When the outer cover 70 is put on the blind cover 35, the outer cover 70 is attached to the blind cover 35 by engaging the engagement hole 72 with the engagement protrusion 39 by using the elasticity of the side walls 71, 71. Is done. When the outer cover 70 is thus attached to the blind cover 35, the push button 23 of the switch 22 attached to the second member 51 is notched (not shown) provided in the outer cover 70 as shown in FIG. Is exposed to the outside. Therefore, the push button 23 can be operated from the outside of the outer cover 70. When the outer cover 70 is removed from the blind cover 35, the engagement between the engagement hole 72 and the engagement protrusion 39 is released by expanding the side walls 71, 71 outward using its elasticity.

  In the illuminating device described above, in the assembled state shown in FIG. 2, the second member 51 equipped with the light emitting unit 10 is attached to the first member 41 via the attaching / detaching mechanism 61 (see FIG. 6). The blind cover 35 is attached to the second member 51 using the mounting screw 38, and further, the blind cover 35 is attached to the blind cover 35 via the engagement portion between the engagement hole 72 and the engagement protrusion 39 shown in FIG. An outer cover 70 is attached.

  In the assembled state of FIG. 2, when the LED 20 is caused to emit light by operating the push button 23 (see FIG. 1) of the switch 22, the light is transmitted through the lens 31 of the lens unit 30 and diffused, and the diffused light is diffused by the outer cover. 70 is emitted to the surroundings.

  By the way, the light of LED20 has strong directivity, and if the surroundings are illuminated with the light as it is, it is supposed that a user will feel dazzling. However, when the lens 31 of the lens unit 30 is configured with a concave lens having a characteristic of diffusing light as in this embodiment, glare of light that passes through the outer cover 70 and illuminates the surroundings is reduced. There is an advantage.

  FIG. 12, FIG. 13 or FIG. 14 shows a modification of the configuration of the light emitting unit 10 together with the heat radiating plate 80 in which measures are taken to further reduce the glare of the light that passes through the outer cover 70 and illuminates the surroundings. ing. 12 is an explanatory diagram of the light emitting unit 10, FIG. 13 is an enlarged view of the XIII portion of FIG. 12, and FIG. 14 is an enlarged view of the XIV portion of FIG.

  In this modification, the unevenness 73 shown in FIG. 13 is provided on the back surface of the outer cover 70. Further, the unevenness 34 shown in FIG. 14 is provided on the back surface of the lens 31. If such measures are taken for the outer cover 70 and the lens 31, the glare of the light of the LED 20 is greatly reduced by the diffusion action of the lens 31 as a concave lens and the irregular reflection action of the unevenness 34. In addition, the diffused light indicated by the arrow L1 transmitted through the lens 31 is diffused more significantly as indicated by the arrow L2 due to the irregular reflection effect by the unevenness 73 of the outer cover 70, and the surroundings are illuminated. It is diffused and users feel almost no glare.

  In this modification, the projections and depressions 34 and 73 are provided on both the lens 31 and the outer cover 70, but in this respect, the projections and depressions may be provided only on one side of the lens 31 and the outer cover 70. In addition, the unevenness 34 of the lens 31 and the unevenness 73 of the outer cover 70 may be provided on each surface or both surfaces. Further, these irregularities 34 and 73 may be scattered on the front surface or the back surface of the lens 31 or the outer cover 70 or may be formed in stripes.

  In the light emitting unit 10 of this lighting device, as shown in FIG. 1 and the like, the LED 20 and electronic parts necessary for causing the LED 20 to emit light are mounted on the same circuit board 21, and the heat generation thereof is generated by the heat sink. 80 is reduced by the action.

  Therefore, in order to promote the heat radiation action by the heat radiating plate 80, in this embodiment, measures are taken to bring the air flow into contact with the heat radiating plate 80. Specifically, as shown in FIG. 1, FIG. 2, FIG. 7, or the like, an opening 47 as a heat radiating hole is formed in an overlapping region of the second member 51 with the heat radiating plate 80. Furthermore, as shown in FIG. 1, FIG. 2, FIG. 3, or the like, an opening 47 as a heat radiating hole is formed in the first member 41 at a position opposite to the position where the opening 58 of the second member 51 is formed. . If the openings 47 and 58 are formed in the first member 41 and the second member 51 in this way, the airflow of outside air directly contacts the heat radiating plate 80 through the openings 47 and 58, thereby obtaining a high heat dissipation effect. It is done. Therefore, the temperature rise of LED20 is suppressed and the durability is improved.

  Next, an example of a procedure for installing the lighting device by retrofitting on furniture such as bedding or shelves such as a stationary shelf will be described.

  FIGS. 15 to 17 illustrate the procedure for installing the lighting device only on one side of the wooden headboard of the bed. 15 is a cross-sectional view illustrating the start stage of the procedure, FIG. 16 is a cross-sectional view illustrating the final stage, and FIG.

  In the starting stage of FIG. 15, the two insertion holes 44 and 44 of the first member 41 are used in a state where the overlapping portion 43 of the first member 41 is overlapped on one side of the headboard 100 as the counterpart member. Then, the first mounting screws 45, 45 are screwed into the head board 100 and tightened. Thereby, the first member 41 is fixed to one side of the head board 100. On the other hand, the blindfold cover 35 is attached to the second member 51 to which the LED 20, the heat dissipation plate 80, the switch 22, and the like are attached using the attachment screw 38. Usually, a component in which the light emitting unit 10 including the LED 20, the heat sink 80, the switch 22, and the like are attached to the second member 51 is provided to the user as an integral component P.

  In the final stage of FIG. 16, the first member 41 fixed to the headboard 100 has been described with reference to FIG. 6 by fitting the edge frame portion 52 to the second member 51 of the integrated part P. The integrated part P is attached to the first member 41 via the second member 51 by the action of the attachment / detachment mechanism 61. Thereafter, the outer cover 70 is put on the integral part P as indicated by an arrow so that the engagement hole 72 and the engagement protrusion 39 described with reference to FIG. Installing.

   By performing the above procedure, the lighting device is installed on the headboard 100 as shown in FIG. In addition, in the headboard 100 shown in FIGS. 15 to 17, an insertion hole 102 for an electric cord (not shown) drawn out to the back through the notch 59 of the second member 51 described with reference to FIG. 4. Is provided. The insertion hole 102 communicates with the opening 58 of the second member 51 and the opening 47 of the first member 41 so that it can be analogized as shown by the phantom line in FIG. With this configuration, the insertion hole 102 not only helps to draw out the electric cord to the rear of the head board 100, but also serves to promote the heat radiation from the heat radiating plate 80 by circulating the outside air through the openings 47 and 58. .

  18 to 20 exemplify a procedure for installing a lighting device by performing work from one side and the other side of a wooden headboard of a bed. In this installation procedure, the first member 41 is not necessary. 18 is a cross-sectional view illustrating the start stage of the procedure, FIG. 19 is a cross-sectional view illustrating the final stage, and FIG. 20 is a cross-sectional view of the installation state with respect to the headboard 200.

  At the start stage of FIG. 18, as shown by the arrows in FIG. 18, the overlapping portion 53 of the second member 51 provided in the above-described integrated part P is overlapped on one side of the headboard 200, and The two boss portions 54, 54 of the second member 51 are aligned with the screw insertion holes 201, 201 provided.

  In the final stage of FIG. 19, the second mounting screws 57, 57 inserted through the screw insertion holes 201, 201 of the headboard 200 are screwed into the boss portions 54, 54 of the second member 51 and tightened. Thereby, the integrated component P is fixed to the head board 200. Next, the integral part P fixed to the head board 200 is covered with the outer cover 70 as indicated by an arrow, thereby engaging the engagement hole 72 and the engagement protrusion 39 described with reference to FIG. Then, the outer cover 70 is attached to the integral part P.

   By performing the above procedure, the lighting device is installed on the headboard 200 as shown in FIG. The head board 200 shown in FIGS. 18 to 20 is also provided with an insertion hole 202 for an electrical cord (not shown), similar to that shown in FIGS. 15 to 17. The electric cord drawn to the back through the notch 59 of the second member 51 described above is drawn to the rear of the head board 200 through the insertion hole 202. The insertion hole 202 is also communicated with the opening 58 of the second member 51 so that it can be analogized as shown by the phantom line in FIG. Therefore, the insertion hole 202 is useful not only for drawing out the electric cord to the rear of the head board 200 but also for promoting the heat radiation from the heat radiating plate 80 by circulating outside air through the opening 58.

  The installation procedure described with reference to FIGS. 15 to 17 is suitable for installing the lighting device only on one side of the headboard 100. The installation procedure described with reference to FIGS. 200 is suitable for installing the lighting device from one side and the other side.

10 Light emitting unit 20 LED
DESCRIPTION OF SYMBOLS 21 Circuit board 30 Lens unit 31 Lens 34.73 Concavity and convexity 35 Blindfold cover 36 Opening part 40 Base member 70 Outer cover 41 1st member 43,53 Overlapping part 44 Insertion hole part 47,58 opening of 1st attachment screw (radiation hole) )
51 Second member 54 Boss part into which second mounting screw can be screwed 61 Detachable mechanism 62 Post 63 Claw part 64 Projection part 80 Heat sink 100, 200 Head board (counter member)

Claims (8)

A lighting device having a light emitting unit using an LED as a light source, a base member that can be attached to a counterpart member, and an outer cover that is disposed to cover the light emitting unit,
The light emitting unit and the outer cover are attached to the base member, and the light emitting unit includes the LED as a light source and a lens that is disposed opposite to the LED and diffuses and transmits the light. A lens unit provided with a blindfold cover provided with an opening into which a lens of the lens unit is fitted;
The lighting device, wherein the outer cover has a transparent region that transmits light diffused through the lens, and has a shape that covers the light emitting unit and the base member.   The illumination device according to claim 1, wherein the lens is a concave lens, and an unevenness that exerts an action of diffusing transmitted light is provided on one or both outer surfaces of the lens and the transparent region of the outer cover. The base member includes a first member, a second member to which the light emitting unit is attached, and an attachment / detachment mechanism used for attaching / detaching the second member to / from the first member. And each 2nd member is provided with the overlap part to the above-mentioned counterpart member separately,
The first member is provided with an insertion hole portion of a first mounting screw used for mounting the first member to the counterpart member, whereas the second member is attached to the counterpart member. The lighting device according to claim 1, wherein a boss portion capable of screwing a second mounting screw used for mounting on the member is provided.   The attachment / detachment mechanism is provided at a claw portion provided at a tip end of a support column protruding from a plurality of positions of the first member and a plurality of positions of the second member, and the second member is overlapped with the first member. The illuminating device according to claim 3, wherein the lighting device includes a projecting piece engaged with the claw as a counterpart through a matching operation.   The LED as a light source is mounted on the same circuit board together with the electronic components necessary for causing the LED to emit light, and the circuit board is overlapped on a heat dissipation plate fixed to the base member in an overlapping manner. The lighting device according to claim 1, wherein the lighting device is attached and an opening as a heat radiating hole is formed in an overlapping region of the base member with the heat radiating plate.   The LED as a light source is mounted on the same circuit board together with the electronic components necessary for causing the LED to emit light, and the circuit board is overlapped on a heat dissipation plate fixed to the second member in an overlapping manner. The lighting device according to claim 3 or 4, wherein the lighting device is attached to the lighting device.   The lighting device according to claim 6, wherein an opening as a heat dissipation hole is formed in an overlapping region of the second member with the heat dissipation plate.   The lighting device according to claim 7, wherein an opening as a heat radiating hole is formed at a position of the second member facing the formation position of the second member.

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