JP5690764B2 - Lighting device - Google Patents

Description

  The present invention relates to an illuminating device including a conductive housing, in which an LED light source and a lighting control device that emits electromagnetic radiation for operating the LED light source are arranged in an internal space of the housing.

  Conventionally, this type is provided with a conductive housing, in which at least one light source and at least one switching component emitting electromagnetic radiation for operating at least one light source are arranged. Further, there has been proposed a lighting device (for example, Patent Document 1) that includes a conductive cover for covering the switching component, and the cover and the housing are electrically connected to each other.

  In the lighting device, in order to suppress the influence of high-frequency electromagnetic radiation of the switching power supply for operating the LED, the conventional cost-saving and space-consuming operation for operating the switching power supply in a completely shielded independent housing takes place. For the problem, the switching power supply switching component arranged in the internal space of the metal housing is covered with a conductive cover, and the housing and the cover are electrically connected. As the conductive cover, Illustrated are a reflector, a lens with a conductive coating, and a glass with a conductive coating.

  In the case of using the reflector, since an opening is provided in the reflector and the LED faces the opening, the light beam of the LED cannot be controlled by the lens, and the lens with the conductive coating is used. When used, it covers not only the LED but also the entire switching component, so that a larger lens than the LED used is required, and the internal switching component may be visually recognized through the lens from the outside. In the case of using the glass with the conductive coating, the LED light cannot be controlled by a lens or the like, and the internal switching component may be visually recognized through the glass from the outside.

  Further, in the lighting device, the problem of high-frequency electromagnetic radiation is taken into consideration, but no consideration is given to the heat generated during LED lighting, and a space for heat radiation outside the metal housing at the time of mounting. There is a case where it is necessary to provide an installation space, and there is a problem that the installation location is easily restricted and an installation space combining the space for heat radiation and the lighting device is required.

Special table 2010-531037 gazette

  Therefore, the present invention solves the above-described problem, and in addition to reducing electromagnetic interference associated with the generation of noise peculiar to a lighting device including an LED light source, the lighting device can be downsized while maintaining an appropriate light distribution. The purpose is to provide.

  In order to achieve the above object, an invention according to claim 1 is provided with a conductive housing, and an LED light source and a lighting control device that emits electromagnetic radiation for operating the LED light source are disposed in an inner space of the housing. The lighting device includes a conductive cover that covers the lighting control device on the front side, and the cover and the housing are electrically connected to each other, the cover opening corresponding to the LED light source A lens for controlling light emitted from the LED light source is provided in the cover opening, the LED light source and the lighting control device are disposed on both sides of the housing, and the housing corresponds to the LED light source. A plurality of radiating fins are provided on the rear surface, and the radiating fins are disposed between the LED light source on the rear surface of the housing and the lighting control device. The features.

  Further, in the invention according to claim 2 of the present application, the length of the radiation fin arranged between the LED light source on the rear surface of the housing and the lighting control device is the length of the radiation fin located in another part. It is characterized by being longer.

Further, the invention according to claim 3 of the present application is provided with a conductive housing, and an LED light source and a lighting control device that emits electromagnetic radiation for operating the LED light source are arranged in the inner space of the housing, and the lighting A lighting device is provided with a conductive cover covering the control device on the front side, and the cover and the housing are electrically connected to each other, the cover having a cover opening corresponding to the LED light source, a lens to control the light emitted from the LED light source in the cover opening is provided, before Symbol lighting control device includes a mounting substrate, said mounting substrate of the lighting control device and the LED light source is disposed on opposite sides of the housing is, the LED light source is fixed to the front surface of the rear part of the housing, a boss portion is provided on the front surface of the rear face of the front Symbol housing, the mounting base Together with the mounting substrate by fixing the fixing means which is inserted through the boss portion is fixed to the rear face through the boss portion, a gap between the mounting board and the rear surface portion in a fixed state It is provided.

  The invention according to claim 4 of the present application is characterized in that a radiation fin is disposed on a rear surface of the housing corresponding to the boss portion.

  The invention according to claim 5 is characterized in that the cover is subjected to conductive processing on the rear surface.

  According to a sixth aspect of the present invention, a conductive shielding member having an opening corresponding to a light emitting portion of the LED light source is provided between the LED light source and the lens, and the conductive shielding member is the housing. It is electrically connected to.

  According to the lighting device of the first and second aspects of the present invention, it is possible to reduce the size while maintaining an appropriate light distribution, in addition to reducing electromagnetic interference due to noise generation specific to the lighting device including the LED light source. Become. In addition, since the heat generated from the LED light source can be dissipated by the plurality of heat dissipating fins, the lighting device can be further reduced in size.

  According to the illumination device of the third and fourth aspects of the present invention, the gap is provided between the mounting substrate of the lighting control device and the rear surface portion of the housing.

  According to the lighting device of the fifth aspect of the present invention, it is possible to further reduce the size of the lighting device by bringing the electrically coupled position between the conductive housing and the cover for reducing noise close to each other.

  According to the illumination device of the sixth aspect of the present invention, it is possible to effectively reduce noise from the cover opening of the LED light source.

It is a front view of the illuminating device which shows Example 1 of this invention. It is an AA line end view of Drawing 1 same as the above. FIG. 2 is an end view taken along line BB in FIG. It is a CC line end view of Drawing 1 same as the above. It is a front view of a lens same as the above. It is a front view of the lens which shows an engagement state with a boss | hub part etc. same as the above, and has made a part of latching | locking part and engaging protrusion part into a cross section. It is a front view of an electroconductive shielding member same as the above. It is the perspective view which looked at the housing from the front side same as the above. It is the perspective view which looked at the cover from the back side same as the above. It is the perspective view which looked at the cover from the front side same as the above. It is a perspective view of the illuminating device of the state which removed the transparent hood same as the above. It is a perspective view of the state which removed the transparent food | hood, the cover, the lens, and the shielding member same as the above. It is a perspective view of the state which removed the transparent food | hood, the cover, the lens, and the shielding member same as the above, and has shown the board | substrate side code | cord | chord and the cover side code | cord | chord. It is a perspective view of the state which removed the transparent food | hood, the cover, and the lens same as the above. It is a perspective view of the state which removed the transparent food | hood, the cover, and the lens same as the above, and has shown the board | substrate side code | cord | chord and the cover side code | cord | chord. It is a perspective view of the state which removed the transparent food | hood and the cover same as the above. It is a perspective view of the state which removed the transparent food | hood and the cover same as the above, and has shown the board | substrate side code | cord | chord and the cover side code | cord | chord. It is a perspective view of a housing showing a substrate side cord and a cover side cord. FIG. 6 is a perspective view of the cover as viewed obliquely from below and shows a state in which a cover-side cord is connected to the cover. 20A is a perspective view of the housing, and FIG. 20B is a perspective view of the cover. It is a graph which shows a radiation noise measurement result same as the above. It is the perspective view which looked at the cover which shows Example 2 of this invention from the rear side. It is sectional drawing explaining attachment of a ground member same as the above, FIG. 23 (A) shows the state before attachment of a ground member, and FIG.23 (B) shows the ground structure by a ground member. It is the perspective view which looked at the cover which shows Example 3 of this invention from the back side. It is a top view which shows the attachment state of a ground member same as the above. It is an expanded sectional view of the earth structure which shows Example 4 of the present invention. It is a plane sectional view of the illuminating device which shows Example 5 of this invention. It is a plane sectional view of the illuminating device which shows Example 6 of this invention.

  Embodiments of the illumination device of the present invention will be described below with reference to the drawings.

  FIGS. 1-21 shows Example 1 of this invention, and the illuminating device 1 of this invention is suitable for vehicles, Comprising: For example, it can be used as a fog lamp.

  As shown in FIG. 2 and the like, the lighting device 1 includes a conductive housing 2, and an LED light source 4 and a lighting that emits electromagnetic radiation for operating the LED light source 4 in an internal space 3 of the housing 2. The control device 5 is disposed in a stored state, and the front side of the lighting control device 5 is covered with a cover 6 having conductivity. Further, the cover 6 is provided with a cover opening 7 at the projection portion of the light emission position of the LED light source 4, and an optical lens 8 for controlling the light of the LED light source 4 is provided so as to cover the cover opening 7, The cover 6 and the housing 2 are electrically connected to each other, and a conductive shielding member 9 is disposed between the lens 8 and the LED light source 4. The LED is a light emitting diode.

  The housing 2 is made of a metal having conductivity, such as aluminum or an aluminum alloy, and the rear portion is closed by the rear surface portion 11, and the upper, lower, left and right side portions are curved from the rear surface portion 11 to the front side. 12U, 12D, 12L, and 12R are integrally provided, and an approximately elliptical front opening 13 is provided on the front side of the upper, lower, left, and right side portions 12U, 12D, 12L, and 12R as shown in FIG. The upper, lower, left, and right side surfaces 12U, 12D, 12L, and 12R are formed so that the distance from the rear surface portion 11 toward the front surface opening portion 13 increases. Largely formed. Further, as shown in FIG. 2, the left side surface portion 12L, which is the other side in the left-right direction, is formed longer in the front-rear direction than the right side surface portion 12R, which is the one side. Is formed. The housing 2 can be manufactured by an aluminum die casting method or the like.

  When the lighting device 1 according to the present embodiment is used as a fog lamp for a vehicle, what is illustrated in the present embodiment is mounted on the right side of the vehicle when viewed from the front. The lighting device to be mounted has a symmetrical shape. Further, although the earthing of the housing 2 is not performed in this embodiment, when the earthing is performed, the housing 2 is electrically connected to an appropriate position of the vehicle. When the lighting device 1 is attached as a fog lamp to a vehicle bumper or the like, the right side of the lighting device 1 is the left side in the traveling direction of the vehicle.

  The LED light source 4 is disposed on the right side that is one side in the left-right direction of the internal space 3 and is fixed to the front surface of the rear surface portion 11. As shown in FIG. 8 and the like, a mounting seat 14 projects from the front surface of the rear surface portion 11, and the front surface of the mounting seat 14 is formed in a flat surface and has a horizontally long rectangular shape when viewed from the front. Then, the rear surface of the LED light source 4 is brought into contact with the front surface of the mounting seat 14, and screw holes 14H and 14H are provided on the left and right sides of the mounting seat 14, and the screw 14B serving as fixing means in the contacted state is provided with the rear surface portion 11. The LED light source 4 is sandwiched between the head of the screw 14B and the mounting seat 14. Further, positioning projections 15 and 15 are provided on the left and right of the upper part of the mounting seat 14, and through holes 15H and 15H through which the positioning projections 15 and 15 are inserted are provided on the left and right of the LED light source 4, respectively. As shown, the LED light source 4 is positioned on the mounting seat 14 by inserting the positioning protrusions 15 and 15 through the through holes 15H and 15H. As shown in FIG. 12 and the like, bifurcated terminal portions 17 and 17 are provided below the LED light source 4.

  A light emitting portion 16 of the LED light source 4 is provided on the center side between the left and right screws 14B, 14B. Then, although heat is generated at the time of light emission in the light emitting portion 16 and the vicinity thereof, the LED light source 4 is fixed to the housing 2 in a state where the rear surface of the LED light source 4 is in surface contact with the mounting seat 14, so that heat is transferred to the rear surface portion 11. Can escape efficiently to the side.

  The lighting control device 5 is disposed on the right side, which is one side in the left-right direction of the internal space 3, opposite to the LED light source 4, and a mounting board 21 on which electronic components are mounted, and an LED provided on the mounting board 21 As shown in FIG. 12, both the terminal portions 17, 17 and the mounting substrate 21 are connected by an electric cord 20, and lighting control of the LED light source 4 is performed by the lighting control device 5.

  Further, as shown in FIGS. 2 and 8, a boss portion 23 is provided on the left side of the rear surface portion 11, and a screw 23B as a fixing means is inserted into the mounting substrate 21, and the screw 23B is screwed into the boss portion 23. The mounting substrate 21 is fixed to the rear surface portion 11 by being attached. Further, as shown in FIG. 2, a gap 3S is provided between the mounting substrate 21 and the rear surface portion 11 in a fixed state. Further, the lighting control device 5 and the LED light source 4 are arranged on both sides of the internal space 3, and thus the lighting control device 5 and the LED light source 4 are arranged at positions separated from each other in the inner space 3.

  The lens 8 is made of a light transmitting member, and is manufactured by injection molding of synthetic resin or the like. The lens 8 is provided at a lens body 24, a lens edge 25 provided around the lens body 24, and a rear part of the lens edge 25. The base portion 26 is integrally provided, and at least the lens body 24 is a transparent body.

  The lens body 24 has a concave surface portion 24B on the rear surface side and a convex surface portion 24F having a curvature larger than that of the concave surface portion 24B on the front surface side, and the concave surface portion 24B and the convex surface portion 24F are curved. Further, the lens body 24 has a substantially oval shape whose left-right dimension is larger than the vertical dimension when viewed from the front, and diffuses the light from the light-emitting unit 16 so as to spread in the left-right direction and controls it to converge in the vertical direction. . As shown in FIGS. 2 and 3, the lens edge 25 has a front surface that is discontinuous in curvature with the convex surface portion 24F, that is, between the front surface of the lens edge portion 25 and the convex surface portion 24F. There is a bent portion, and a side surface portion 27 of the base portion 26 is partially extended on the rear side of the lens edge 25. As shown in FIG. An overhang portion 28 is provided to protrude outward.

  As shown in FIGS. 8 and 20A, the rear surface portion 11 of the housing 2 is provided with one boss portion 31, 32, 33 at the upper portion of the right front surface thereof and two boss portions 31, 32, 33 at the lower portion. The portion 31 has a cylindrical shape, the lower one boss portion 32 has a cylindrical shape, the other lower boss portion 33 has a long hole shape, and the boss portion 33 is long in the left-right direction. Note that the boss portion 33 also has a circular hole in which the screw is screwed. Further, the overhanging portion 28 of the base portion 26 is formed with through holes 31H, 32H, 33H into which the tip ends of the boss portions 31, 32, 33 are inserted, and these through holes 31H, 32H, 33H are formed with the bosses. Forms corresponding to the parts 31, 32, 33. Further, a part of the through hole 31H is opened, and this opening is smaller in diameter.

  The conductive shielding member 9 shown in FIG. 7 and the like is made of a metal having conductivity, such as aluminum or an aluminum alloy, and shields light. In this example, the conductive shielding member 9 has a flat plate shape that is thinner than that of the cover 6, and has a shielding member body 41 that is substantially the same size as the lens body 24. An opening 42 opened corresponding to the light emitting portion 16 of the LED light source 4 is provided, and the opening 42 is also formed in a substantially oval or substantially oval shape that is long in the left-right direction, like the lens body 24. By providing the conductive shielding member 9, a noise reduction effect can be obtained while the cover opening 7 is present. In this example, the light passing portion is constituted by the opening 42 opened in the conductive shielding member 9.

  Further, the shielding member main body 41 is provided with projecting portions 43, 44, 45 at one place on the periphery and two places on the bottom. Corresponding to the upper protrusion 43, a flat contact surface portion 31M is provided around the upper boss portion 31, and the rear surface of the upper protrusion 43 is in contact with the contact surface portion 31M. The boss portion 31 is inserted into the through hole 31H of the overhanging portion 28 of the lens 8, while the projecting portions 44 and 45 at the two lower locations are formed with through holes 44H and 45H having the same shape as the through holes 32H and 33H. The tip ends of the boss portions 32 and 33 are inserted into the through holes 44H and 45H.

  After the conductive shielding member 9 is set in the housing 2 in this way, the lens 8 is attached so as to cover the conductive shielding member 9. Specifically, the distal ends of the boss portions 31, 32, 33 are inserted into the through holes 31H, 32H, 33H of the base portion 26, and screws 46, 46 serving as screw fixing means are attached to the boss portions 31, 32, 33, respectively. , 46 are screwed to fix the conductive shielding member 9 and the lens 8 to the housing 2, and the lens 8 is disposed in front of the LED light source 4 and separated from the LED light source 4. Further, the protruding portion 43 above the conductive shielding member 9 is sandwiched between the contact surface portion 31M and the rear surface of the overhang portion 28. In the fixed state, as shown in FIG. 16, the center of the lens 8 and the opening 42 of the conductive shielding member 9 are positioned in front of the light emitting unit 16.

  Here, the earth structure of the conductive shielding member 9 will be described. With the conductive shielding member 9 fixed to the housing 2, the conductive shielding member 9 has an upper protrusion 43 in contact with the contact surface portion 31M, The lower protrusions 44 and 45 are in contact with the bosses 32 and 33 so that they are electrically connected to the housing 2.

  The cover 6 has substantially the same shape as the front opening 13 of the housing 2 and is made of a synthetic resin or the like. The cover 6 has a curved surface 6W having a recessed front surface, and the lens 8 is provided so as to cover the cover opening 7. It is done. The edge 7F of the cover opening 7 has substantially the same shape as the lens edge 25 of the lens 8, and the cover opening 7 is in front of the lens edge 25 in the attached state as shown in FIGS. 7F is located, and only the lens body 24 appears outside the cover 6.

  Further, the positioning structure of the lens 8 and the cover 6 will be described. As shown in FIGS. 9 and 20B, the rear surface of the cover 6 has a substantially U-shaped frame on the left and right sides of the cover opening 7. The left and right locking portions 51L, 51R protrude from the left and right sides of the lens body 24, and the left and right locking portions 51L, 51R protrude. The front end portion 52 is locked to the rear portion of the locking receiving portion 29. The tip 52 is bowl-shaped and is arranged in the vertical direction. The locking receiving portion 29 is formed with an inclined guide surface 29A whose front end is inclined rearward from the proximal end to the distal end. When the cover 6 is attached to the housing 2, the distal end 52 is formed on the inclined guide surface 29A. The locking portions 51L and 51R are deformed so that the leading end portion 52 is moved to the outside by being guided, and the leading end portion 52 is locked to the rear surface side of the locking receiving portions 29 and 29.

  Furthermore, the positioning structure of the housing 2 and the cover 6 will be described. On the rear surface of the cover 6, positioning projections 53L and 53R having substantially U-shaped frame shapes projecting rearward on both ends in the left-right direction. Positioning frame portions 54L and 54R, which are left and right positioning receiving portions into which the portions 53L and 53R are engaged, are provided on the inner surfaces of the left and right side surface portions 12L and 12R of the housing 2, respectively. Further, on the rear surface of the cover 6, flat positioning projections 55, 55 are provided in the vertical direction, and the upper and lower positioning projections 55, 55 are engaged with the inner surfaces of the upper and lower side surface portions 12U, 12D. The vertical position of the cover 6 with respect to the housing 2 is determined.

  Further, as shown in FIG. 5, a longitudinal groove portion 30 is provided on the outer surface of the side surface portion 27 of the base portion 26, and the longitudinal groove portion 30 is provided above and below the lens 8, respectively. The wall portions 30A, 30A are formed in parallel between the portions 30A, 30A, and engaging protrusions 56, 56 engaging with the upper and lower longitudinal groove portions 30, 30 are formed on the rear surface of the cover 6. Projected.

  The lens body 24, the lens edge portion 25, the base portion 26, the latch receiving portion 29, the longitudinal groove portion 30 and the like constituting the lens 8 are manufactured by integral molding of synthetic resin.

  Accordingly, the cover 6 and the lens 8 are locked by the locking of the locking portions 51L and 51R and the locking receiving portions 29 and 29, and the locking portions 51L and 51R form a U-shaped frame shape. The cover 6 and the lens 8 are vertically positioned. Further, the housing 2 is engaged with the left and right positioning projections 53L and 53R and the positioning frame portions 54L and 54R and with the upper and lower positioning projections 55 and 55 and the inner surfaces of the upper and lower side surfaces 12U and 12D. The cover 6 is positioned with respect to it. Thus, the left and right locking portions 51L and 51R and the locking receiving portions 29 and 29, the positioning projections 53L and 53R and the positioning frame portions 54L and 54R, the upper and lower positioning projections 55 and 55, and the upper and lower side surface portions 12U, Since a plurality of positioning means such as the inner surface of 12D are provided, a reliable positioning state can be maintained even under vibration conditions of a vehicle or the like.

  Further, on the rear surface of the cover 6, a conductive boss portion 57 for connecting one crimping terminal of an electric cord described later is projected.

  The cover 6 is conductive by being subjected to conductive processing. In this example, the cover 6 is subjected to aluminum vapor deposition or plating treatment so that at least substantially the entire surface of the cover 6 on the lighting control device 5 side is a conductive layer. The front surface of the cover 6 has a glittering property by applying a colored coating directly on the aluminum-deposited conductive layer or directly, thereby giving the front surface of the cover 6 a decorative property. The surface of the cover 6 on the lighting control device 5 side is the rear surface of the cover 6.

  Next, the grounding structure of the mounting substrate 21 and the cover 6 will be described. As shown in FIG. 17, a substrate side cord 61 is connected to the mounting substrate 21, and the crimp terminal 61A of the substrate side cord 61 is connected to the boss portion. The screw 46 is screwed to the boss portion 33 while being in contact with 33, whereby the mounting substrate 21 is electrically connected to the housing 2. One end of a cover side cord 62 is connected to the crimp terminal 61A, and a crimp terminal 62A is provided at the other end of the cover side cord 62. The crimp terminal 62A is connected to the conductive boss portion 57 by a screw 62B. The housing 2 and the cover 6 are electrically connected by the cover side cord 62. In FIG. 17 and the like, the cover 6 is not shown, but the cover side cord 62 is shown connected to the cover 6.

  Further, as shown in FIG. 2 and the like, a concave groove 63 having an opening on the front side is formed on the entire periphery of the peripheral edge of the front opening 13 of the housing 2. Furthermore, the lighting device 1 includes a transparent hood 64 that closes the front opening 13, and the transparent hood 64 is made of a transparent synthetic resin, has a substantially constant thickness, and has a curved shape with a slightly convex front side. The front opening 13 has substantially the same shape. Further, the transparent hood 64 has a ridge 65 around the entire rear surface thereof, and the ridge 65 is engaged with the groove 63.

  Then, the entire circumference of the concave groove portion 63 is filled with an adhesive sealing material 66, and when the convex strip 65 is inserted into the concave groove portion 63 so as to crush the sealing material 66, the sealing material 66 The transparent hood 64 is bonded and fixed to the front opening 13 and the both are hermetically bonded.

  An external connection cord 67 is connected to the mounting board 21. As shown in FIG. 4, an insertion tube portion 68 through which the cord 67 is inserted is provided on the rear surface portion 11, and the insertion tube portion 68 is disposed on the lower side on the mounting substrate 21 side and protrudes rearward. ing. Then, the cord 67 is pulled out from the insertion tube portion 68, and the insertion tube portion 68 is hermetically sealed by a packing (not shown) or the like externally attached to the cord 67 on the rear side of the insertion tube portion 68.

  As described above, the front opening 13 is airtightly closed with the transparent hood 64, and the insertion tube portion 68 through which the external connection cord 67 is inserted is airtightly closed with packing or the like. On the other hand, on the mounting substrate 21 side of the rear surface portion 11, a communication cylinder portion 69 that communicates the inside and the outside of the housing 2 is provided, and a cap 70 that hermetically closes the communication cylinder portion 69 is provided. Then, in a state where the internal space 3 of the housing 2 is hermetically sealed, the internal air is decompressed and extracted from the communication tube portion 69, and after the air is extracted, an inert gas or the like is filled into the internal space 3. Then, the cap 70 is put on the communication tube portion 69 to close the communication tube portion 69 in an airtight manner.

  Next, a heat radiating structure, which is another characteristic structure of the present invention, will be described. As shown in FIGS. 2 and 3, the housing 2 has a plurality of heat radiating fins 71 and 71A integrally formed on the rear surface of the rear surface portion 11. The radiating fins 71, 71A are provided so as to project rearward substantially orthogonally to the rear surface portion 11, and are arranged at substantially equal intervals in the left-right direction. Further, the heat radiation fin 71 is longer in the front-rear direction than the heat radiation fin 71A, and the heat radiation fin 71 is provided after the light emitting portion 16, and the heat radiation fin 71 is also provided on the mounting substrate 21 side of the rear surface portion 11. The heat radiation by the heat radiation fins 71, 71A and the heat radiation by the two heat radiation fins 71, 71 can suppress the thermal influence of the light emitting portion 16 on the mounting substrate 21. Furthermore, the heat radiation fins 71 and 71A are provided with a stepped portion 72 on one side in the vertical direction, in this example, on the upper edge, so that the height on the rear end side is low.

  In this way, the lighting device 1 has the lighting control device 5 and the LED light source 4 disposed on both sides of the internal space 3, and the heat radiation fins 71 and 71A are disposed on the left and right sides. Is.

  Then, with the rear surface of the LED light source 4 in surface contact with the mounting seat 14, the LED light source 4 is fixed to the mounting seat 14, and the radiating fin 71 is attached to the rear surface portion 11 of the housing 2 corresponding to the peripheral portion of the LED light source 4. , 71A, the heat generated from the LED light source 4 can be efficiently radiated. In addition, since the heat radiation fins 71 and 71A are arranged so as to concentrate on the peripheral portion of the LED light source 4 in this way, a space for providing the insertion tube portion 68 and the communication tube portion 69 on the mounting substrate 21 side of the rear surface portion 11 is secured. It can also take up installation space.

  Further, the left and right side surface portions 12L, 12R of the housing 2 are respectively provided with outward mounting boss portions 75, 75, and the mounting boss portions 75, 75 are attached to the mounting boss portions 75, 75 at the mounting location of a vehicle or the like. The illuminating device 1 is attached to an attachment location by screwing a screw (not shown). The mounting boss 75 protrudes substantially parallel to the front opening 13.

  As described above, since the front opening 13 of the conductive housing 2 is covered with the conductive cover 6 and the housing 2 and the cover 6 are electrically connected by the cover side cord 62, the leakage of high frequency electromagnetic radiation noise. Since the conductive shielding member 9 is provided behind the lens 8 corresponding to the cover opening 7 where the lens 8 is provided, leakage of electromagnetic noise from the cover opening 7 can be suppressed, and the opening 42 can be prevented. Since the other portions are covered with the conductive shielding member 9, the LED light source 4 is not visually recognized from outside except for the opening 42.

  FIG. 21 is a graph showing the measurement result of radiation noise, where the vertical axis represents noise (dB) and the horizontal axis represents frequency (MHz). The measurement results of “Comparative Example” without cover 6, “Example 2” to be described later, “Example 1” which is the lighting device 1 of Example 1, and “Class 5 standard value” are shown. It can be seen that “Example 1” is superior in noise reduction effect compared to “Comparative Example” without 6.

  As described above, in this embodiment, corresponding to claim 1, the lighting control including the conductive housing 2 and emitting the LED light source 4 and the electromagnetic radiation for operating the LED light source 4 in the internal space 3 of the housing 2. The lighting device 1 is provided with a conductive cover 6 that covers the front side of the lighting control device 5, and the cover 6 and the housing 2 are electrically connected to each other. The cover 6 is an LED light source. 4 is provided with a cover opening 7, and the cover opening 7 is provided with a lens 8 for controlling light emitted from the LED light source 4. In addition to reducing electromagnetic interference, miniaturization is possible while maintaining proper light distribution.

  Thus, in this embodiment, the length of the heat radiation fin 71 disposed between the LED light source 4 on the rear surface of the housing 2 and the lighting control device 5 corresponds to the second aspect. It is longer than the length of the radiating fin 71A.

In this way, in this embodiment, corresponding to claim 3, the lighting control device 5 includes the mounting substrate 21, and the LED light source 4 and the mounting substrate 21 of the lighting control device 5 are disposed on both sides of the housing 2. The LED light source 4 is fixed to the front surface of the rear surface portion 11 of the housing 2. A boss portion 23 is provided on the front surface of the rear surface portion 11 of the housing 2, and a screw 23 B serving as a fixing means inserted through the mounting board 21 is fixed to the boss portion 23. Thus, the mounting substrate 21 is fixed to the rear surface portion 11 via the boss portion 23, and a gap 3S is provided between the mounting substrate 21 and the rear surface portion 11 in a fixed state.

  As described above, in this embodiment, corresponding to the fourth aspect, the radiating fin is disposed on the rear surface of the housing 2 corresponding to the boss portion 23.

  In this way, in this embodiment, the cover 6 is subjected to conductive processing on the rear surface in correspondence with the fifth aspect, and therefore, the electrical coupling between the conductive housing 2 and the cover 6 for noise reduction. When the positions are close to each other, the lighting device 1 can be further reduced in size and can be easily electrically connected.

  In this way, in this embodiment, corresponding to claim 6, the conductive shielding member 9 having the opening 42 corresponding to the light emitting portion 16 of the LED light source 4 between the LED light source 4 and the lens 8. Since the conductive shielding member 9 is electrically connected to the housing 2, it is possible to effectively reduce noise from the cover opening 7 of the LED light source 4.

  As described above, in this embodiment, the LED light source 4 and the lighting control device 5 are arranged on both sides of the housing 2 in correspondence with the first aspect, and a plurality of heat radiations are provided on the rear surface of the housing 2 corresponding to the LED light source 4. Since the fins 71 and 71A are provided and the radiation fins 71 are disposed between the LED light source 4 on the rear surface of the housing 2 and the lighting control device 5, heat generated from the LED light source 4 is radiated by the plurality of radiation fins 71 and 71A. Therefore, the lighting device 1 can be further downsized.

  Further, as an effect of the embodiment, since the housing 2 and the cover 6 are electrically connected by the cover side cord 62, a high noise suppression effect can be obtained. Further, since the cover 6 has a conductive process on the rear surface, even if it has a complicated shape, it can be manufactured by molding a synthetic resin, so that it is less expensive than a metal one. Further, the conductive boss portion 57 is provided on the inner surface of the cover 6 and the cover side cord 62 is provided with a crimp terminal 62A as a terminal through which the screw 62B is inserted. Connection can be performed easily. In addition, since the front surface of the cover 6 is colored to give glossiness, the cover 6 does not have a function as a reflector, but has a decorative property, and the cover 6 having the decorative property generates noise. Can be reduced.

  In addition, since the projecting portions 43, 44, and 45 that are a plurality of connection portions of the conductive shielding member 9 are in contact with the housing 2, electrical connection between the conductive shielding member 9 and the housing 2 can be reliably performed. Further, since the conductive shielding member 9 is made of a flat plate material having conductivity and a shielding property that cannot be seen from the front, the conductive shielding member 9 is manufactured at low cost by drilling an opening 42 serving as a light passage portion. can do.

  Further, the crimping terminal 61A as a terminal can be fixed and electrically connected to the boss portion 33 by a screw 46 for fixing the lens 8, and the boss portion 33 has a long hole shape. The contact area can be increased, the electrical connection between them can be made well, and both the substrate side cord 61 and the cover side cord 62 are connected to the crimp terminal 61A, so that one screw Due to 46, both can be fixed to the housing 2 and electrically connected.

  Also, locking portions 51L and 51R each having a substantially U-shaped frame are provided on both the left and right sides of the cover opening 7, the locking receiving portions 29 and 29 are provided on the lens 8, and the upper and lower vertical groove portions 30 and 30 are engaged. Engaging projections 56 and 56 to be projected project from the rear surface of the cover 6, and the locking portions 51L and 51R and the engaging projections 56 and 56 are arranged so as to sandwich the lens 8 from above, below, left and right. Therefore, it is possible to reliably fix and position the cover opening 7 to the lens 8. In addition, on the rear surface of the cover 6, positioning projections 53 </ b> L and 53 </ b> R protrude from both left and right direction ends, and left and right positioning frame portions 54 </ b> L and 54 </ b> R to which the positioning projections 53 </ b> L and 53 </ b> R are press-fitted and fixed are provided. Since the cover 6 is provided along the inner surfaces of the left and right side portions 12L and 12R, the cover 6 can be positioned and fixed to the housing 2 in the front-rear and left-right directions, and can be reliably positioned even under vibration conditions. .

  22 to 23 show a second embodiment of the present invention, in which the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. In this example, the cover 6 is electrically connected to the housing 2 without using an electric cord for the ground structure of the cover 6, and a ground member 81 is attached around the rear surface of the cover 6 as shown in FIG. Yes. This ground member 81 has one side portion 81A and the other side portion 81B by bending a metal plate piece having spring properties into a substantially U shape. In addition, as a metal plate piece which has a spring property, stainless spring steel is illustrated, for example.

  The grounding member 81 is attached to the opposed positions on the peripheral side of the cover 6, in this example, up and down. For this attachment, a plurality of welding pin portions 82, 82 project from the rear surface of the cover 6, and corresponding to these welding pin portions 82, 82, through holes 82 H, The ground member 81 is welded to the cover 6 by drilling 82H and deforming and crushing the tip 82T of the welding pin portion 82 with heat in a state where the welding pin portion 82 is inserted into the through hole 82H. The one side 81 </ b> A is fixed and electrically connected to the conductive layer of the cover 6.

  When the cover 6 is attached to the front opening 13 of the housing 2 so as to narrow the distance between the other side portions 81B and 81B of the upper and lower ground members 81 and 81, the other side portion 81B of the ground member 81 is The cover 6 and the housing 2 are electrically connected to the inner surfaces of the upper and lower side surface portions 12U and 12D.

  Further, in the graph showing the radiation noise measurement result, as shown in “Example 2” which is the illumination device 1 of the present example, “Example 2” reduces noise compared to “Comparative example” without the cover 6. It turns out that it is excellent in effect.

  Thus, in this embodiment, since the cover 6 and the housing 2 are electrically connected to each other by the ground member 81, the same operation and effect as in the first embodiment are obtained. In this example, the cover side cord 62 is Since it becomes unnecessary, both can be electrically connected by assembling the cover 6 to the housing 2, and since a plurality of ground members 81 are used, a reliable electrical connection can be maintained.

  24 to 25 show a third embodiment of the present invention. The same reference numerals are given to the same parts as those of the above-described embodiments, and detailed description thereof will be omitted. In this example, the cover 6 is electrically connected to the housing 2 without using an electric cord for the ground structure of the cover 6, and as shown in the figure, the ground serving as a conductive clip attached to the positioning projection 53L. The member 85 is used. The ground member 85 is made of a metal plate having a spring property, for example, stainless spring steel. The ground member 85 has a substantially V-shape in which the base ends of the one side portion 86 and the other side portion 87 are connected by a turn-back portion 88, and are respectively formed on the distal end sides of the one side portion 86 and the other side portion 87. Bent portions 86A and 87A having a substantially square shape are provided to form a narrow portion 89 formed of a gap between the bent portions 86A and 87A, and one side portion 86 and the other side are formed from the position of the narrow portion 89. The gap between the portions 87 is formed so as to open toward the tip side. Further, a curved locking piece 90 is provided by partially cutting and raising the tip side of one side 86 that is one of the one side 86 and the other side 87, and the locking piece 90 is a narrow portion. It is located at 89 and a gap is provided between the tip of the locking piece 90 and the other side 87. In addition, the ground member 85 is formed with a mounting receiving portion 92 to which the distal end flange 91 of the positioning projection 53L is mounted on the base end side of the narrow portion 89, and the center side of the mounting receiving portion 92 is the narrow portion. Widely formed compared to 89.

  Then, the tip hook 91 of the positioning projection 53L is disposed so as to be sandwiched between the tips of the one side portion 86 and the other side portion 87, and when the ground member 85 is pushed forward from here, the locking piece 90 is moved to the tip hook. The narrow portion 89 is pushed by the opening 91, the leading end 91 is engaged in the mounting receiving portion 92, the locking piece 90 is prevented from coming off, and the ground member 85 is mounted on the positioning projection 53L. .

  As described above, when the cover 6 is attached to the housing 2, the mounting receiving portion 92 is pressed into the positioning frame portion 54 L while being elastically deformed, and the cover 6 is electrically connected to the housing 2 by the ground member 85. .

  Thus, in this embodiment, since the cover 6 and the housing 2 are electrically connected to each other by the ground member 85, the same operation and effect as in each of the above embodiments are achieved. In this example, the cover side cord 62 is It becomes unnecessary and can be electrically connected by assembling the cover 6 to the housing 2.

  The grounding member 85 may be attached to the positioning protrusion 53L, and a plurality of grounding members 85 may be used.

  FIG. 26 shows a fourth embodiment of the present invention, in which the same reference numerals are given to the same portions as the above-mentioned embodiments, and detailed description thereof is omitted. 26 is an enlarged sectional view around the positioning frame portion 54L of FIG. In this example, the cover 6 is electrically connected to the housing 2 without using an electric cord for the grounding structure of the cover 6, and as shown in FIG. ing. The ground member 85A has the same configuration as the ground member 85 of the third embodiment except that the locking piece portion 90 is not provided, and is mounted in the positioning frame portion 54L.

  When the cover 6 is attached to the housing 2, the tip flange 91 of the positioning projection 53L is inserted into the mounting receiving portion 92, and the bent portions 86A and 87A of the ground member 85A sandwich the positioning projection 53L. The cover 6 is electrically connected to the housing 2 by the ground member 85.

  FIG. 27 shows a fifth embodiment of the present invention. The same reference numerals are given to the same portions as those of the above-described embodiments, and detailed description thereof will be omitted. The conductive shielding member 9 of this example is formed so as to spread from the rear side to the front side, and has an oblique wall portion 93 disposed so as to shield between the LED drive circuit 22 and the lens 8. To prevent noise leakage.

  Also, a plurality of heat radiation fins 71B are provided at intervals on the right side surface portion 12R, which is the periphery of the light emitting section 16, and these heat radiation fins 71B are also projected in the same direction as the heat radiation fins 71 and 71A. The heat generated from 4 can be radiated by the plurality of heat radiation fins 71, 71A, 71B. Further, since the heat radiation fins 71 and 71A are integrally provided in the housing 2 by an aluminum die casting method or the like, they can be manufactured at low cost.

  FIG. 28 shows a sixth embodiment of the present invention, in which the same reference numerals are given to the same portions as those in the above-described embodiments, and detailed description thereof will be omitted. The conductive shielding member 9A in this example is made of a light-transmitting plate material, and is made of, for example, a synthetic resin, and is subjected to conductive processing and shielding processing except for the light passage portion 42A corresponding to the light emitting portion 16. Yes. A conductive layer 94 is provided on at least the rear surface or front surface of the cover 6 by performing aluminum vapor deposition or plating treatment as the conductive processing, and a paint having shielding properties is applied to the rear surface or front surface of the cover 6 as a shielding processing. Thus, a shielding layer 95 is provided. In this case, the shielding layer 95, which is a shielding part that does not transmit light, may be set in a range in which light from the light emitting part 16 does not leak outside from the light passing part 42A.

  In addition, a plurality of radiating fins 71C are provided at intervals also on the right side surface portion 12R that is the peripheral portion of the light emitting portion 16, and these radiating fins 71C project outward in the left-right direction in a direction intersecting with the radiating fins 71 and 71A. The heat generated from the LED light source 4 can be radiated by the plurality of heat radiation fins 71, 71A, 71C. Since the radiating fins 71C project substantially in parallel with the front opening 13, the internal space such as a bumper can be used effectively.

  As described above, in this embodiment, the same operations and effects as the above-described embodiments are achieved. In this embodiment, the conductive shielding member 9 is provided between the LED light source 4 and the lens 8, and the conductivity is improved. The shielding member 9 is provided with a light passage portion 42A through which light emitted from the LED light source 4 passes, and the conductive shielding member 9 is electrically connected to the housing 2. Noise can be effectively reduced.

  Further, when the lighting device 1 is used for a vehicle, a plurality of heat radiation fins 71C project from the right side which is the left and right outer sides of the vehicle, so that an empty space such as a bumper of the vehicle can be used effectively. Since the radiating fin 71C protrudes substantially parallel to the front opening 13, it is suitable for mounting a bumper or the like.

  The present invention is not limited to this embodiment, and various modifications can be made within the scope of the gist of the present invention. For example, various processes such as coating other than aluminum vapor deposition and plating can be used as the conductive process. Moreover, you may provide a radiation fin in the lighting control apparatus side of a housing. Furthermore, the shape of the positioning portion is not limited to the shape of the embodiment, and various shapes can be used. Further, the shape of the housing is not limited to the shape of the embodiment, and various types can be used as long as it is a box shape having a rear surface portion and an opening portion. Furthermore, it goes without saying that the present invention can be used for various lighting devices such as home use in addition to vehicles.

DESCRIPTION OF SYMBOLS 1 Illuminating device 2 Housing 3 Internal space 3S Clearance 4 LED light source 5 Lighting control device 6 Cover 7 Cover opening part 8 Lens 9 Conductive shielding member
11 Rear side
21 Mounting board
23 Boss
23B Screw (Fixing means)
53L, 53R Positioning protrusion (positioning part)
54L, 54R Positioning frame (positioning receiving part)
55 Positioning protrusion (positioning part)
62 Cover side cord
71 Radiation fin
71A Heat dissipation fin
81 Ground member
85 Earthing material
85A Earthing material

Claims (6)

An electrically conductive housing is provided, an LED light source and a lighting control device that emits electromagnetic radiation for operating the LED light source are disposed in an inner space of the housing, and a conductive cover that covers the lighting control device is provided on the front side. A lighting device in which the cover and the housing are electrically connected to each other,
The cover includes a cover opening corresponding to the LED light source, and a lens for controlling light emitted from the LED light source is provided in the cover opening.
The LED light source and the lighting control device are disposed on both sides of the housing, and a plurality of heat radiation fins are provided on the rear surface of the housing corresponding to the LED light source,
An illuminating device, wherein a radiation fin is disposed between the LED light source on the rear surface of the housing and the lighting control device. The length of the radiation fin arranged between the LED light source on the rear surface of the housing and the lighting control device is longer than the length of the radiation fin located in another part. Lighting equipment. An electrically conductive housing is provided, an LED light source and a lighting control device that emits electromagnetic radiation for operating the LED light source are disposed in an inner space of the housing, and a conductive cover that covers the lighting control device is provided on the front side. A lighting device in which the cover and the housing are electrically connected to each other,
The cover includes a cover opening corresponding to the LED light source, and a lens for controlling light emitted from the LED light source is provided in the cover opening .
Before SL lighting control device comprises a mounting board,
The LED light source and the mounting board of the lighting control device are disposed on both sides of the housing,
The LED light source is fixed to the front surface of the rear surface portion of the housing,
Before Symbol boss is provided on the front surface of the rear face of the housing, fixed to the rear face the mounting substrate through the boss portion by fixing the fixing means which is inserted through the mounting substrate to the boss In addition, a gap is provided between the mounting substrate and the rear surface portion in a fixed state. The lighting device according to claim 3, wherein a radiation fin is disposed on a rear surface of the housing corresponding to the boss portion. The lighting device according to claim 1, wherein the cover has a conductive surface on a rear surface. A conductive shielding member having an opening corresponding to a light emitting portion of the LED light source is provided between the LED light source and the lens, and the conductive shielding member is electrically connected to the housing. The lighting device according to any one of claims 1 to 5, wherein