WO2023074674A1 - 車両用灯具 - Google Patents
車両用灯具 Download PDFInfo
- Publication number
- WO2023074674A1 WO2023074674A1 PCT/JP2022/039696 JP2022039696W WO2023074674A1 WO 2023074674 A1 WO2023074674 A1 WO 2023074674A1 JP 2022039696 W JP2022039696 W JP 2022039696W WO 2023074674 A1 WO2023074674 A1 WO 2023074674A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light source
- substrate
- installation
- socket
- optical axis
- Prior art date
Links
- 238000009434 installation Methods 0.000 claims abstract description 97
- 239000000758 substrate Substances 0.000 claims abstract description 77
- 230000003287 optical effect Effects 0.000 claims abstract description 68
- 230000017525 heat dissipation Effects 0.000 claims abstract description 40
- 229910052751 metal Inorganic materials 0.000 description 26
- 239000002184 metal Substances 0.000 description 26
- 230000005855 radiation Effects 0.000 description 14
- 230000002093 peripheral effect Effects 0.000 description 11
- 239000000853 adhesive Substances 0.000 description 9
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- 238000010586 diagram Methods 0.000 description 7
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- 229920005989 resin Polymers 0.000 description 7
- 238000002788 crimping Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 5
- 238000004512 die casting Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/40—Cooling of lighting devices
- F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
- F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/19—Attachment of light sources or lamp holders
- F21S41/192—Details of lamp holders, terminals or connectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/19—Attachment of light sources or lamp holders
- F21S41/194—Bayonet attachments
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
- F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
- F21S43/14—Light emitting diodes [LED]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
- F21S43/19—Attachment of light sources or lamp holders
- F21S43/195—Details of lamp holders, terminals or connectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/40—Cooling of lighting devices
- F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
- F21S45/48—Passive cooling, e.g. using fins, thermal conductive elements or openings with means for conducting heat from the inside to the outside of the lighting devices, e.g. with fins on the outer surface of the lighting device
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/50—Waterproofing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
- F21W2102/10—Arrangement or contour of the emitted light
- F21W2102/17—Arrangement or contour of the emitted light for regions other than high beam or low beam
- F21W2102/19—Arrangement or contour of the emitted light for regions other than high beam or low beam for curves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
- F21W2102/30—Fog lights
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2103/00—Exterior vehicle lighting devices for signalling purposes
- F21W2103/10—Position lights
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2103/00—Exterior vehicle lighting devices for signalling purposes
- F21W2103/15—Side marker lights
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2103/00—Exterior vehicle lighting devices for signalling purposes
- F21W2103/20—Direction indicator lights
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2103/00—Exterior vehicle lighting devices for signalling purposes
- F21W2103/55—Daytime running lights [DRL]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Definitions
- the present disclosure relates to vehicle lamps.
- Vehicle lamps are required to use high-output and high-brightness light sources. For this reason, vehicle lamps that efficiently release heat from light sources have been proposed (see, for example, Patent Documents 1 and 2).
- the vehicle lamp disclosed in Patent Document 1 has a light source mounted on a substrate mounted on a thin plate-shaped metal body, and the metal body is integrally embedded in a socket (a heat-conducting resin member) by insert molding. heat from the metal body can escape through the socket.
- a socket a heat-conducting resin member
- a board on which a light source is mounted is attached to a conical metal body (heat transfer section), and the metal body is inserted into a concave portion (receiving section) of a socket, whereby the light is emitted from the light source. heat can escape from the metal body through the socket.
- the substrate is adhered to the metal body via a thermally conductive medium made of adhesive, grease, or the like.
- the substrate is provided on the metal body via the Therefore, in these vehicle lamps, there is a risk that the mounting strength of the board is insufficient, and the board may fall off or become misaligned.
- the present disclosure has been made in view of the above circumstances, and an object of the present disclosure is to provide a vehicle lamp capable of sufficiently releasing heat from a light source while ensuring mounting strength of the substrate.
- a vehicle lamp includes a substrate electrically connected to a light source, and a heat dissipation member that is attached to an installation surface of the substrate and that dissipates heat from the light source, the heat dissipation member comprising:
- the substrate has a protrusion projecting from the installation surface and a flat contact surface on the side opposite to the installation surface, the substrate has an opening through which the protrusion can pass, and
- the contact surface is positioned on the same straight line as the protrusion in the optical axis direction.
- the vehicle lamp of the present disclosure it is possible to sufficiently release heat from the light source while ensuring the mounting strength of the board.
- FIG. 1 is an explanatory diagram showing a vehicle lamp of Example 1 as a vehicle lamp according to the present disclosure
- FIG. FIG. 4 is an explanatory diagram showing a light source unit of the vehicle lamp
- FIG. 3 is an explanatory diagram showing an exploded configuration of a light source unit
- FIG. 4 is an explanatory diagram showing a cross section taken along line II of FIG. 3
- FIG. 7 is an explanatory view similar to FIG. 6 showing how the circuit board is arranged on the heat radiating member;
- FIG. 8 is an explanatory diagram showing a state in which the projecting portion is crimped from the state of FIG. 7;
- FIG. 3 is an explanatory diagram showing a state in which the heat radiating member is press-fitted into the socket, and corresponds to a cross section taken along line II-II of FIG. 2;
- FIG. 10 is an explanatory diagram showing a state in which the protrusion is crimped from the state shown in FIG. 9;
- FIG. 1 A vehicle lamp 10 of Example 1 according to one embodiment of the vehicle lamp according to the present disclosure will be described with reference to FIGS. 1 to 10.
- FIG. The vehicle lamp 10 of the first embodiment is used as a lamp for a vehicle such as an automobile, and is used for, for example, head lamps, fog lamps, daytime running lamps, clearance lamps, stop lamps, tail lamps, turn lamps, cornering lamps, and the like. be done.
- the direction in which light is emitted when the vehicle travels straight is defined as the direction of the optical axis (Z in the drawings, and the direction in which the light is emitted is referred to as the front side).
- the vertical direction in the folded state is defined as the vertical direction (Y in the drawing), and the direction perpendicular to the optical axis direction and the vertical direction is defined as the horizontal direction (X in the drawing).
- the vehicle lamp 10 includes a lamp housing 11, a lamp lens 12, a reflector 13, and a light source unit 20, as shown in FIG.
- the lamp housing 11 is formed of a light-impermeable member such as a colored or painted resin material, and is shaped such that the front is open and the rear is closed.
- the lamp housing 11 is provided with a mounting hole 11a passing through the blocked rear end.
- a plurality of notch portions and stopper portions are provided at approximately equal intervals on the edge of the mounting hole 11a.
- the lamp lens 12 is made of a light-transmitting member such as a transparent resin member or a glass member, and has a shape capable of covering the open front end of the lamp housing 11 .
- the lamp lens 12 is fixed in a sealed state in the opening of the lamp housing 11 to ensure watertightness.
- a lamp chamber 14 is defined by the lamp housing 11 and the lamp lens 12 .
- the reflector 13 is a light distribution control member that controls the light distribution of the light emitted from the light source unit 20, and is fixed to the lamp housing 11 or the like and arranged in the lamp chamber .
- the reflector 13 has a curved shape with a focal point in the vicinity of the light source 21 (see FIG. 2, etc.) of the light source unit 20.
- the inner surface is a reflecting surface 13a for reflecting light, and a mounting hole 13b is provided at the bottom. there is The mounting hole 13b communicates with the mounting hole 11a of the lamp housing 11 when the reflector 13 is arranged in the lamp chamber 14. As shown in FIG. In Embodiment 1, the reflector 13 is formed as a separate member from the lamp housing 11.
- the vehicle lamp 10 can be used as, for example, a headlamp, a fog lamp, a daytime running lamp, a clearance lamp, a stop lamp, a tail lamp, and the like.
- a light source unit 20 is arranged in the lamp chamber 14 so as to pass through the mounting hole 11 a of the lamp housing 11 and the mounting hole 13 b of the reflector 13 .
- the light source unit 20 is detachably attached to the attachment hole 11a with a sealing member (O-ring) 15 interposed between the light source unit 20 and the lamp housing 11.
- O-ring sealing member
- the light source unit 20 may be provided in the lamp chamber 14 via a vertical optical axis adjustment mechanism or a horizontal optical axis adjustment mechanism.
- the light source unit 20 includes a light source 21, a heat radiation member 22, a socket 23, and a power supply member 24, as shown in FIGS.
- the light source 21 is formed as a submount type light emitting element in which a light emitting chip 32 is provided on a submount substrate 31 .
- the mounting surface 31a of the submount substrate 31 has a substantially rectangular shape when viewed from the front side in the optical axis direction, the light emitting chip 32 is attached to the upper half, and the two corners on the lower side form a pair and are connected.
- a terminal 31b is provided.
- the light emitting chip 32 and both connection terminals 31b are electrically connected via the submount substrate 31 (the electric circuit thereof), and the light emitting chip 32 is lit when power is supplied between the two connection terminals 31b.
- the light-emitting chip 32 is a self-luminous semiconductor light source such as an LED (Light Emitting Diode), an EL (organic EL), an LD chip (laser diode chip), etc. In the first embodiment, it is an LED chip.
- the light-emitting chip 32 is positioned near the focal point of the reflector 13 with the light source unit 20 assembled.
- the heat dissipation member 22 is a heat sink member that transfers heat generated by the light source 21 to the socket 23, and is made of a metal material with high thermal conductivity. .
- the heat dissipation member 22 has an installation plate portion 41 and a block portion 42, as shown in FIGS.
- the installation plate portion 41 has a plate shape orthogonal to the optical axis direction, and in the first embodiment, has a rectangular shape with four rounded corners when viewed in the optical axis direction.
- the installation plate portion 41 has a flat surface perpendicular to the optical axis direction on the front side in the optical axis direction to form an installation surface 43 .
- the massive portion 42 is provided on the rear side of the installation plate portion 41 in the optical axis direction, and protrudes rearward from the installation plate portion 41 at a position biased upward in the vertical direction with respect to the installation plate portion 41 . It has a prismatic shape. For this reason, the mass portion 42 is a metal mass (filled with metal) having a large thickness in the optical axis direction, thereby increasing the heat capacity of the heat radiating member 22 .
- the massive portion 42 forms a contact surface 44 with a flat surface perpendicular to the optical axis direction on the rear side in the optical axis direction.
- the massive portion 42 extends at least to the lower side in the vertical direction beyond the center of the heat radiating member 22, and in the first embodiment, it extends to approximately two thirds of the upper side in the vertical direction. Therefore, in the heat radiating member 22, a step is formed between the installation plate portion 41 and the massive portion 42 on the rear side in the optical axis direction.
- a portion of the mounting plate portion 41 where the block portion 42 is not provided on the rear side in the optical axis direction is a flat surface perpendicular to the optical axis direction, and serves as an attachment surface 45 .
- the addressing surface 45 is positioned below and forward of the contact surface 44 and parallel to the contact surface 44 .
- the installation surface 43 is a flat surface orthogonal to the optical axis direction, and is provided with a convex surface portion 46, a pair of projecting portions 47, and a pair of terminal holes 48.
- the convex portion 46 has a central portion of the installation surface 43 that partially protrudes forward in the optical axis direction, and is provided at a position overlapping the massive portion 42 in the optical axis direction.
- the protruding end of the convex portion 46 is a flat surface orthogonal to the optical axis direction, and the light source 21 is installed thereon. Therefore, on the installation surface 43, the convex portion 46 serves as a light source installation location where the light source 21 is installed.
- the light source 21 is attached to the convex portion 46 via a thermally conductive adhesive.
- This adhesive is used to attach the light source 21 (its submount substrate 31) to the convex portion 46, and is made of a material such as an epoxy resin adhesive, a silicon resin adhesive, or an acrylic resin adhesive. form, tape form, and the like.
- the light source 21 can be directly attached to the heat dissipation member 22, and the light source 21 can be effectively cooled.
- Both protruding portions 47 have a cylindrical shape protruding from the installation surface 43 in the optical axis direction, and are provided in pairs so as to sandwich the convex surface portion 46 in the left-right direction. Each projecting portion 47 is provided at a position overlapping the massive portion 42 in the optical axis direction, and is positioned on the same straight line as the contact surface 44 (part thereof) in the optical axis direction (see FIG. 6, etc.). .
- the both-terminal holes 48 are through holes that pass through the installation plate portion 41 below the convex surface portion 46, and allow the pin terminals 24a (see FIGS. 2 and 3) of the power supply member 24 to pass therethrough. .
- the both terminal holes 48 are arranged in the left-right direction, and open the installation surface 43 and the attachment surface 45 in the optical axis direction.
- a substrate 51 is provided on the installation surface 43 so as to surround the lower side of the convex portion 46, that is, the light source 21 and both sides in the left-right direction.
- the substrate 51 transmits a control signal from a control circuit mounted on the vehicle to the light source 21, and is appropriately provided with a plurality of elements such as capacitors.
- the substrate 51 is a U-shaped plate member surrounding the convex portion 46, and when provided on the installation surface 43, is positioned at a height substantially equal to that of the convex portion 46 in the optical axis direction (see FIG. 7, etc.). Therefore, on the installation surface 43, the lower side of the convex surface portion 46 and both sides in the left-right direction serve as substrate installation locations where the substrate 51 is installed.
- the substrate 51 may be provided with a control circuit, and is not limited to the configuration of the first embodiment.
- the substrate 51 is provided with a pair of openings 51a, a pair of terminal connection holes 51b, and a pair of connection terminals 51c. Both openings 51a are through-holes penetrating the substrate 51 in the optical axis direction, and are paired so as to sandwich the light source 21 in the left-right direction. Each opening 51a is provided at a position corresponding to a pair of protrusions 47 provided on the mounting surface 43 of the heat radiating member 22, so that the corresponding protrusions 47 can be passed through.
- Each terminal connection hole 51b is a through hole that penetrates the substrate 51 in the optical axis direction, and is provided at a position corresponding to a pair of terminal holes 48 provided in the installation surface 43 of the heat dissipation member 22.
- Each terminal connection hole 51b is electrically connected to a circuit on the substrate 51, and is electrically connected to the power supply member 24 by fixing the corresponding pin terminal 24a with solder or the like.
- Both connection terminals 51 c are provided at positions corresponding to the connection terminals 31 b on the mounting surface 31 a of the submount substrate 31 and are electrically connected to the circuit formed on the substrate 51 .
- the substrate 51 is attached to the installation surface 43 in the positional relationship described above via a thermally conductive adhesive.
- the substrate 51 is electrically connected to the light source 21 by a pair of bonding wires 52 provided by wire bonding.
- the bonding wires 52 are paired so as to bridge the connecting terminals 31b of the submount substrate 31 of the light source 21 attached to the convex portion 46 and the connecting terminals 51c of the substrate 51 attached to the installation surface 43. It is established for the purpose of In the first embodiment, each bonding wire 52 is electrically connected to the connection terminal 31b at one end and to the connection terminal 51c at the other end by wire bonding using ultrasonic waves.
- the light source 21 (its submount substrate 31) and the substrate 51 are not limited to the configuration of the first embodiment as long as they are electrically connected.
- each positioning protrusion 53 is positioned laterally outside the pair of terminal holes 48 on the attachment surface 45 and has a cylindrical shape that protrudes rearward from the attachment surface 45 in the optical axis direction.
- the installation plate portion 41 is provided with an annular side surface 54 surrounding the direction orthogonal to the optical axis direction.
- the side surface 54 (installation plate portion 41 ) is continuous with the installation surface 43 and is sized to fit inside the peripheral wall 67 of the socket body portion 61 of the socket 23 .
- a plate-like portion 55 is provided on the side surface 54 .
- the plate-like portion 55 is a support portion by the projection portion 73 provided on the socket main body portion 61 .
- the plate-shaped portions 55 of the first embodiment are provided at a total of four locations, forming pairs in the vertical direction and forming pairs in the horizontal direction.
- Each plate-like portion 55 has a plate-like shape extending in the tangential direction of a circle centered on the optical axis of the light source 21 in the installation plate portion 41, and has a dimension in the optical axis direction (hereinafter also referred to as a thickness dimension ) is made smaller than other portions of the installation plate portion 41 .
- Each plate-like portion 55 is configured such that the installation surface 43 side of the installation plate portion 41 is partially cut out. For this reason, each of the plate-like portions 55 has four partially recessed portions at both the vertical and horizontal edges of the installation surface 43 of the installation plate portion 41 .
- the socket 23 is made of a material having thermal conductivity, and is made of a resin member in the first embodiment. As shown in FIGS. 3 and 5, the socket 23 has a socket body portion 61 and a socket heat radiation portion 62, and has a function of releasing heat transmitted from the heat radiation member 22 to the outside (mainly the socket heat radiation portion 62). have.
- the socket body portion 61 has a mounting surface 63 on the front side in the optical axis direction, and a back surface 64 (see FIGS. 9 and 10) that is continuous with the socket heat radiation portion 62 on the opposite side (rear side in the optical axis direction). there is In the socket body portion 61, the mounting surface 63 is partially recessed rearward in the optical axis direction to form a receiving recess 65. As shown in FIG.
- the receiving concave portion 65 is a portion for receiving the massive portion 42 of the heat radiating member 22.
- the concave portion 65 is shaped like a recess that imitates the external shape of the massive portion 42; It is possible to put in
- the receiving recess 65 is constituted by a receiving wall portion 66 (see FIGS. 9, 10, etc.), and the receiving wall portion 66 has a substantially uniform thickness dimension throughout. As a result, the receiving recess 65 can more effectively prevent sink marks from occurring in each portion of the receiving wall portion 66 when the socket 23 is formed by resin molding using a mold.
- the receiving wall portion 66 has a thickness dimension that is substantially equal to that of the portions adjacent thereto (such as a peripheral wall 67 and a flange wall 68, which will be described later) (see FIGS. 9 and 10). , the occurrence of sink marks during resin molding can be more effectively prevented.
- the socket body portion 61 has a rear surface 64 that is continuous with the socket heat radiation portion 62, and the rear surface 64 is the rear surface of the receiving wall portion 66 in the optical axis direction.
- the socket body portion 61 allows the lump portion 42 fitted in the receiving recess 65 and the socket heat radiation portion 62 (each of its fins 75) to be brought close to each other, so that the heat transmitted from the heat radiation member 22 to the socket 23 is reduced. can be efficiently radiated from the socket heat radiating portion 62 .
- the receiving wall portion 66 has a thickness dimension that allows the massive portion 42 and the socket heat radiating portion 62 (each fin 75) to be as close as possible while ensuring the strength of the socket main body portion 61.
- the socket main body 61 is provided with a cylindrical peripheral wall 67 and a flange wall 68 projecting outward along a plane perpendicular to the optical axis direction.
- the peripheral wall 67 has a cylindrical shape with an outer diameter slightly smaller than the inner diameter of the mounting hole 11a of the lamp housing 11, and the receiving recess 65 is located inside.
- the peripheral wall 67 is provided with four mounting projections 69 projecting outward in a direction orthogonal to the optical axis direction.
- the four mounting projections 69 are provided at substantially equal intervals in the circumferential direction of the peripheral wall 67, and can pass through cutouts provided at the edge of the mounting hole 11a of the lamp housing 11. As shown in FIG.
- each mounting projection 69 is applied to the stopper portion by changing the rotational posture of the socket main body 61 with respect to the lamp housing 11 , so that the flange wall 68 and the peripheral edge of the mounting hole 11 a are attached.
- the part and the sealing member 15 can be sandwiched (see FIG. 1). Accordingly, each mounting protrusion 69 cooperates with the flange wall 68 to detachably mount the socket 23 , that is, the light source unit 20 to the lamp housing 11 via the sealing member 15 .
- an installation recess 71 In the socket body portion 61 , an installation recess 71 , a positioning hole 72 and a protrusion 73 are provided inside the peripheral wall 67 of the mounting surface 63 .
- the installation recess 71 is a place where the power supply member 24 (see FIG. 3) is installed, and is formed by partially recessing the lower side of the receiving recess 65 in the mounting surface 63 toward the rear side in the optical axis direction. ing.
- the installation recess 71 is provided with a connection hole 74 penetrating the inner wall thereof in the optical axis direction.
- the power supply member 24 is mechanically detachably and electrically intermittently connected to the power supply side connector 16 (see FIG. 1), and supplies power from the connector 16 to the light source unit 20. do.
- the power supply member 24 has a pair of pin terminals 24a, and the pin terminals 24a are electrically connected to the respective terminal connection holes 51b so that power can be supplied to the substrate 51 (see FIG. 2). reference).
- the installation recess 71 has a shape that imitates the outer shape of the power supply member 24 , and by fitting the power supply member 24 through an insulating material, the insulation of the power supply member 24 is ensured.
- This installation recess 71 communicates with a mounting portion (inside thereof) provided on the rear surface 64 via a connection hole 74 .
- the power supply member 24 is provided in the installation recess 71, so that the connection terminal on the rear side in the optical axis direction is exposed through the connection hole 74 in the installation location, and the power supply side connector 16 (see FIG. 1) is attached to the installation location. ) is attached, the mating terminals are electrically connected to the mating terminals of the connector 16 thereof.
- the positioning holes 72 are paired on both sides of the installation recess 71 in the left-right direction on the mounting surface 63 and extend rearward in the optical axis direction. Each positioning hole 72 corresponds to a pair of positioning projections 53 of the heat radiating member 22, and each positioning projection 53 can be inserted. Each positioning hole 72 defines a relative position between the heat dissipation member 22 and the socket 23 by inserting the corresponding positioning protrusion 53 . Therefore, in the first embodiment, the pair of positioning protrusions 53 of the heat radiating member 22 serve as the heat radiating side positioning portions, and the pair of positioning holes 72 of the socket 23 serve as the socket side positioning portions.
- the position and the number of the heat radiating side positioning portion and the socket side positioning portion may be appropriately set as long as they determine the relative positions of the heat radiating member 22 and the socket 23, and the projections and holes are replaced.
- other configurations may be used, and the configuration is not limited to that of the first embodiment.
- the projecting portion 73 is provided for attaching the heat radiating member 22 to the socket 23 (its socket body portion 61). As shown in FIGS. 3, 5, 9, etc., the four protrusions 73 are provided corresponding to the four plate-like portions 55 provided on the side surface 54 of the installation plate portion 41 of the heat dissipation member 22. ing. The projections 73 form a pair in the vertical direction and also form a pair in the horizontal direction. located outside. Each protrusion 73 is in a positional relationship adjacent to the radially outer side of the corresponding plate-like portion 55 in a state in which the relative position is determined by each positioning hole 72 and each positioning protrusion 53 (Fig. 9, etc.).
- Each protrusion 73 has a plate shape extending in a tangential direction of a circle centered on the optical axis direction and protruding forward from the mounting surface 63 in the optical axis direction.
- Each projecting portion 73 has a tip portion 73a that is gradually tapered toward the front side in the optical axis direction. 5, see FIG. 9, etc.).
- the socket heat dissipation part 62 releases (radiates) the heat transferred from the heat dissipation member 22 to the outside, and has a plurality of fins 75 .
- Each fin 75 has a plate shape along a plane perpendicular to the left-right direction, and is arranged side by side in the left-right direction while protruding rearward in the optical axis direction from the back surface 64 .
- On the rear surface 64 as shown in FIG. 1, mounting portions into which the power supply side connector 16 is inserted are provided at locations where the fins 75 are not provided.
- the connector 16 is mechanically detachably attached to this mounting location, and when the connector 16 is attached, the connection terminal of the connector 16 is connected to the connection terminal of the power supply member 24 (see FIG. 3, etc.) provided in the installation recess 71 . electrically connected to the
- the light source unit 20 is assembled as follows. First, as shown in FIG. 3, the power supply member 24 is fitted into the installation recess 71 of the mounting surface 63 of the socket 23 via an insulating material, and the connection terminal thereof is exposed through the connection hole 74 into the mounting portion. In addition, the light source 21 is attached to the convex surface portion 46 of the installation surface 43 of the installation plate portion 41 of the heat dissipation member 22 via a thermally conductive adhesive, and the light source 21 is surrounded on the lower side and both sides in the left-right direction. , the substrate 51 is attached to the installation surface 43 via a thermally conductive adhesive.
- the pair of protruding portions 47 of the installation surface 43 are passed through the corresponding openings 51a (see FIG. 7), and the terminal connection holes 51b corresponding to the pair of terminal holes 48 of the installation surface 43 are inserted. is passed.
- the heat dissipation member 22 is provided with a flat contact surface 44 parallel to the installation surface 43 on the opposite side of the installation surface 43 in the optical axis direction. It is positioned collinear with plane 44 . As shown in FIG. 8, the heat radiating member 22 has the contact surface 44 placed on the flat work surface 76a of the work table 76, and a load in the optical axis direction is applied to both projecting portions 47 (the tips thereof). .
- the applied load can act between the contact surface 44 (working surface 76a) orthogonal to the direction thereof, and the load can be efficiently applied, and each projecting portion 47 A load can be applied in the direction of the optical axis without bias. Therefore, the heat dissipation member 22 can suppress deformation of each projecting portion 47 in an unintended direction, and can stably crush the tips of both projecting portions 47 . As a result, the tip of each projecting portion 47 is inflated while being passed through the corresponding opening 51a, and is prevented from slipping out of the opening 51a. Thereby, the substrate 51 is firmly fixed to the installation surface 43 , that is, the heat dissipation member 22 .
- a pair of bonding wires 52 are arranged across the connection terminals 31 b of the submount substrate 31 of the light source 21 and the connection terminals 51 c of the substrate 51 . Then, both ends of each bonding wire 52 assigned to each connection terminal 31b and each connection terminal 51c are electrically connected by wire bonding using ultrasonic waves. At this time, since the light source 21 is provided on the convex surface portion 46 which is positioned at a height substantially equal to that of the substrate 51, the position is higher than the substrate 51, which facilitates the work of connecting both ends of each bonding wire 52. can be made into something
- heat-conducting grease is provided in the receiving recess 65 of the mounting surface 63 of the socket main body 61 of the socket 23 to improve heat transferability.
- each positioning projection 53 of the heat dissipation member 22 is inserted into the corresponding positioning hole 72 in the peripheral wall 67 of the socket main body 61 , and the massive portion 42 of the heat dissipation member 22 is press-fitted into the receiving recess 65 .
- ultrasonic waves can be used as appropriate, that is, ultrasonic waves may or may not be used.
- each protrusion 73 of the socket main body 61 is adjacent to the radially outer side of the corresponding plate-like portion 55 of the side surface 54 of the installation plate portion 41 (see FIG. 9, etc.).
- the tip portion 73a of each protrusion 73 is crushed and plastically deformed, that is, crimped (see FIG. 9 before deformation and FIG. 10 after deformation).
- the tip portion 73a of each protrusion 73 is plastically deformed by bending inward in the radial direction so that the tip portion 73a covers the corresponding plate-like portion 55 from the front side in the optical axis direction.
- This crimping may be thermal crimping performed by applying heat, or may be ultrasonic crimping performed using ultrasonic waves.
- each protrusion 73 can sandwich the plate-like portion 55 in the optical axis direction between the tip portion 73a and the mounting surface 63 on which the protrusion 73 is provided (see FIG. 10).
- Each projecting portion 73 is adjacent to the corresponding plate-like portion 55 on the radially outer side, and the tip portion 73a is bent radially inwardly, so that the mounting plate portion 41 is supported from all sides. Thus, it can be firmly fixed to the socket body portion 61 .
- the light source unit 20 can be assembled by electrically connecting the pin terminals 24a to the terminal connection holes 51b using solder or the like.
- the light source unit 20 is inserted into the mounting hole 11a of the lamp housing 11 from the light source 21 side in a state in which the sealing member 15 is provided so as to cover the peripheral wall 67 and the flange wall 68.
- the mounting projection 69 is passed through a notch provided at the edge of the mounting hole 11a.
- the light source unit 20 changes the rotational posture of the socket main body 61 with respect to the lamp housing 11, and each mounting projection 69 is applied to the corresponding stopper portion, so that the flange wall 68 and the peripheral portion of the mounting hole 11a are separated from each other. It is attached to the lamp housing 11 with the sealing member 15 interposed therebetween.
- the light source 21 and the substrate 51 of the light source unit 20 pass through the mounting hole 11a of the lamp housing 11 and the mounting hole 13b of the reflector 13, pass through the mounting hole 11a of the lamp housing 11 and the mounting hole 13b of the reflector 13, and enter the lamp chamber 14. are placed.
- the connector 16 on the power supply side is attached to the attachment location of the socket 23 of the light source unit 20 attached to the lamp housing 11 . can be turned on and off as appropriate.
- the vehicle lamp 10 Since the vehicle lamp 10 is provided with the light source 21 on the heat radiation member 22 formed by metal die casting (aluminum die casting in the first embodiment), a thin plate-like metal body is used as in the prior art of Patent Document 1. In comparison, the heat capacity of the heat dissipation member 22 can be increased, and the light source 21 can be cooled appropriately.
- the massive portion 42 has a prism shape projecting rearward from the installation plate portion 41, so that the heat capacity can be efficiently increased.
- the massive portion 42 of the heat radiating member 22 is fitted into the receiving recess 65 of the socket 23, so that the heat generated by the light source 21 can be efficiently transferred from the heat radiating member 22 to the socket 23. The heat can be released from the socket 23 to the outside.
- the heat dissipating member 22 has a prismatic shape in which the massive portion 42 protrudes rearward from the installation plate portion 41, and the contact surface 44 on the rear side is installed perpendicular to the optical axis direction. It is a flat surface parallel to the surface 43 . Therefore, even if the projection area of the massive portion 42 in the optical axis direction is equal to that of the cone-shaped metal body of the related art disclosed in Patent Document 2, the vehicular lamp 10 has a larger mass of the massive portion 42 than the metal body. The volume can be increased, and the heat capacity of the heat radiating member 22 can be increased.
- the socket 23 is also provided with the socket heat radiation portion 62 (each fin 75). can promote Therefore, the vehicular lamp 10 can cool the light source 21 more appropriately than the conventional techniques of Patent Documents 1 and 2, and can appropriately light the light source 21 .
- the mass portion 42 of the heat radiating member 22 of the vehicular lamp 10 has a prismatic shape, the weight of the heat radiating member 22 increases, making it difficult to maintain the fixed state of the heat radiating member 22 to the socket 23 . There is a risk of becoming.
- the vehicle lamp 10 supports the plate-like portion 55 of the heat radiating member 22 by crimping the projecting portion 73 of the socket 23 , the heat radiating member 22 can be properly fixed to the socket 23 .
- the plate-like portions 55 are provided in a total of four locations, forming a pair in the vertical direction and forming a pair in the horizontal direction, so that the heat radiating member 22 can be fixed in a well-balanced manner. , the fixed state of the heat radiating member 22 to the socket 23 can be maintained more appropriately.
- the vehicular lamp 10 since the vehicular lamp 10 has the massive portion 42 of the heat radiating member 22 fitted into the receiving recess 65 of the socket 23, even the heat radiating member 22 having an increased weight can be properly fixed to the socket 23, and the light source can be The heat generated in 21 can be efficiently transferred from the heat radiating member 22 to the socket 23.
- the substrate is provided on the metal body via a thermally conductive medium or a bonding layer.
- the position may shift. Therefore, the applicant considered fixing the substrate to the metal body by caulking.
- the metal body is integrally embedded in the socket by insert molding. When a load is applied, the socket may be deformed or damaged, and it becomes difficult to appropriately apply the load of the crimping to the crimping projection. Further, in the vehicle lamp of Patent Document 2, since the rear side of the metal body has a conical shape, if the board is to be fixed to the metal body by caulking, the metal body will not be fixed when a load is applied.
- the contact surface 44 on the opposite side of the installation surface 43 in the optical axis direction of the heat dissipation member 22 is a flat surface, and each projecting portion 47 of the installation surface 43 and the contact surface 44 (part thereof) are flat. ) are positioned on the same straight line.
- the vehicular lamp 10 is configured such that the contact surface 44 is placed on a flat surface (the working surface 76a in the first embodiment) and a load is applied to both the projecting portions 47 in the optical axis direction. The tip of the can be stably crushed.
- the vehicle lamp 10 can appropriately fix the substrate 51 to the heat dissipation member 22 as compared with the vehicle lamps of Patent Documents 1 and 2.
- the vehicle lamp 10 since the vehicle lamp 10 is mounted on a vehicle, in addition to being affected by vibrations of the vehicle, the light source 21 and the substrate 51 are electrically connected by a pair of bonding wires 52 by wire bonding using ultrasonic waves. properly connected. For this reason, the vehicle lamp 10 may cause the substrate to come off or the position of the substrate to shift during wire bonding using ultrasonic waves.
- the vehicle lamp 10 since the vehicle lamp 10 has the board 51 fixed to the heat dissipation member 22 by caulking in advance, the fixed state of the board 51 to the heat dissipation member 22 can be appropriately maintained.
- the vehicular lamp 10 can expose the structure in which the substrate 51 is fixed to the heat dissipation member 22 by caulking, so that it can be understood at a glance that the substrate 51 is firmly fixed. .
- the vehicle lamp 10 of Embodiment 1 can obtain the following effects.
- the heat dissipation member 22 has a projecting portion 47 projecting from the installation surface 43 and the contact surface 44 attached to the mounting surface 63, and the substrate 51 has an opening through which the projecting portion 47 can pass.
- the contact surface 44 is formed as a flat surface on the side opposite to the installation surface 43 and is positioned on the same straight line as the projecting portion 47 in the optical axis direction. Therefore, the vehicular lamp 10 can stably crush the tip of the projecting portion 47 by applying a load in the optical axis direction to the projecting portion 47 while the contact surface 44 is placed on a flat surface.
- the vehicular lamp 10 is configured such that the heat dissipation member 22 for dissipating heat from the light source 21 is attached to the socket 23, the heat capacity of the heat dissipation member 22 can be ensured. As a result, the vehicle lamp 10 can properly fix the substrate 51 to the heat dissipation member 22 and sufficiently cool the light source 21 .
- the vehicle lamp 10 has a contact surface 44 that is a flat surface orthogonal to the optical axis direction. Therefore, the vehicular lamp 10 can apply a load in the optical axis direction to the projecting portion 47 appropriately between the contact surface 44 and the projecting portion 47, and can evenly crush the projecting portion 47 in the optical axis direction.
- the heat radiation member 22 has an annular side surface 54 that is continuous with the installation surface 43
- the socket 23 is provided with a projection 73 projecting from the mounting surface 63
- the projection 73 is provided on the side surface 54 of the heat radiation member 22
- a plate-like portion 55 supported by 73 is provided. Therefore, the vehicle lamp 10 can be fixed without positioning the protrusion 73 on the installation surface 43 because the protrusion 73 sandwiches the plate-like portion 55 of the side surface 54 of the heat radiating member 22 .
- the vehicle lamp 10 can be appropriately fixed to the socket 23 even if the heat dissipation member 22 has the light source 21 and the substrate 51 provided on the installation surface 43, and the light source 21 can be sufficiently cooled.
- the socket 23 has the receiving recess 65 for receiving the heat radiating member 22, the receiving recess 65 is formed by partially recessing the mounting surface 63, and the receiving wall 66 constituting the receiving recess 65 is entirely formed.
- the thickness dimension is approximately equal throughout. Therefore, the vehicular lamp 10 can more effectively prevent the occurrence of sink marks when the socket 23 is resin-molded, the heat radiating member 22 can be appropriately fitted into the receiving recess 65, and the light source 21 can be sufficiently illuminated. can be cooled.
- the light source 21 is a sub-mount type light emitting element
- the installation surface 43 includes a light source installation location (the convex surface portion 46 in the first embodiment) and a substrate installation location where the substrate 51 is provided (the installation location in the first embodiment). the lower side of the convex surface portion 46 on the surface 43 and both sides in the left-right direction).
- the vehicular lamp 10 is provided with a pair of projecting portions 47 at positions sandwiching the light source installation location at the board installation location. Therefore, the vehicle lamp 10 can stably fix the substrate 51 electrically connected to the light source 21 to the heat dissipation member 22 .
- the light source 21 provided at the light source installation location is placed at a position equal to or higher in the optical axis direction than the substrate 51 provided at the substrate installation location. Therefore, the vehicle lamp 10 can easily connect both ends of each bonding wire 52 that bridges the light source 21 (each connection terminal 31b thereof) and the substrate 51 (each connection terminal 51c thereof).
- the vehicle lamp 10 of Example 1 as the vehicle lamp according to the present disclosure can sufficiently release heat from the light source 21 while securing the mounting strength of the substrate 51 to the heat dissipation member 22 .
- vehicle lamp of the present disclosure has been described above based on the first embodiment, the specific configuration is not limited to the first embodiment, and is outside the gist of the invention according to each claim. Design changes, additions, etc. are permitted unless
- the heat dissipation member 22 is formed by aluminum die casting.
- the heat dissipating member is not limited to the structure of the first embodiment as long as it is formed by metal die casting and has a thickness larger than that of a thin plate-like metal body (a so-called metal plate).
- the prismatic block portion 42 is provided at a position biased upward in the vertical direction with respect to the installation plate portion 41.
- the heat dissipation member is a metal die-cast, The entirety may be the massive portion 42, the position of the massive portion 42 may be changed, and the configuration is not limited to that of the first embodiment.
- the projecting portions 47 are provided in pairs so as to sandwich the light source 21 (convex portion 46) in the left-right direction.
- the projecting portion 47 is provided so as to project from the installation surface 43 of the heat radiating member 22, can be passed through the opening portion 51a of the substrate 51, and positions the contact surface 44 on the same straight line in the optical axis direction. If there is, the position, number, and shape may be appropriately set, and the configuration is not limited to that of the first embodiment.
- the submount type light source 21 is used and electrically connected to the substrate 51 by a pair of bonding wires 52 provided by wire bonding.
- the light source is attached to the heat dissipating member 22 and is appropriately turned on and off by the supply of power from the connector 16 on the power supply side attached to the socket 23, for example, the light source mounted on the substrate can dissipate heat. It may be configured to be attached to the member 22 or may be another configuration, and is not limited to the configuration of the first embodiment.
- the light source installation location is the convex surface portion 46 that partially protrudes from the center of the installation surface 43 of the heat dissipation member 22 .
- the light source installation location is a location on the installation surface 43 where the light source 21 is installed, it may be flush with the installation surface 43 or may protrude in a larger area than the light source 21. 1 configuration.
- the light source installation location facilitates the work of connecting both ends of each bonding wire 52 that bridges the light source 21 and the substrate 51, the self-provided light source 21 can be installed at the substrate installation location. It is desirable that the position be equal to or higher than the substrate 51 in the optical axis direction.
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Abstract
Description
本出願は、2021年10月29日に日本国特許庁に出願された特願2021-177998に基づいて優先権を主張し、その全ての開示は完全に本明細書で参照により組み込まれる。
Claims (7)
- 光源に電気的に接続される基板と、
前記基板が設置面に宛がわれて、前記光源からの熱を放熱する放熱部材と、を備え、
前記放熱部材は、前記設置面から突出する突出部と、前記設置面とは反対側で平坦な面とされた接触面とを有し、
前記基板は、前記突出部を通すことのできる開口部を有し、
前記接触面は、前記突出部と光軸方向で同一直線上に位置されていることを特徴とする車両用灯具。 - 前記接触面は、光軸方向に直交する平坦な面とされていることを特徴とする請求項1に記載の車両用灯具。
- 請求項1に記載の車両用灯具であって、
さらに、前記放熱部材が取り付けられるソケットを備え、
前記ソケットは、前記接触面が宛がわれる取付面を有することを特徴とする車両用灯具。 - 前記放熱部材は、前記設置面に連続する環状の側面を有し、
前記ソケットでは、前記取付面から突出して、前記放熱部材の固定のための突起部が設けられ、
前記放熱部材では、前記側面に、前記突起部による支持箇所となる板状部が設けられていることを特徴とする請求項3に記載の車両用灯具。 - 前記ソケットは、前記放熱部材を受け入れる受容凹部を有し、
前記受容凹部は、前記取付面を部分的に凹ませて形成され、前記受容凹部を構成する受容壁部が全体に亘って略等しい厚さ寸法とされていることを特徴とする請求項3または請求項4に記載の車両用灯具。 - 前記光源は、サブマウントタイプの発光素子であり、
前記設置面は、前記光源が設けられる光源設置箇所と、前記基板が設けられる基板設置箇所と、を有し、
前記突出部は、前記基板設置箇所において前記光源設置箇所を挟む位置で対を為して設けられていることを特徴とする請求項1に記載の車両用灯具。 - 前記光源設置箇所は、設けられた前記光源を、前記基板設置箇所に設けられた前記基板と光軸方向で等しい位置か光軸方向で高い位置とすることを特徴とする請求項6に記載の車両用灯具。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280072751.7A CN118202188A (zh) | 2021-10-29 | 2022-10-25 | 车辆用灯具 |
US18/704,736 US20250012421A1 (en) | 2021-10-29 | 2022-10-25 | Vehicular lamp |
JP2023556457A JPWO2023074674A1 (ja) | 2021-10-29 | 2022-10-25 | |
EP22887000.2A EP4425044A1 (en) | 2021-10-29 | 2022-10-25 | Vehicular lamp |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021177998 | 2021-10-29 | ||
JP2021-177998 | 2021-10-29 |
Publications (1)
Publication Number | Publication Date |
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WO2023074674A1 true WO2023074674A1 (ja) | 2023-05-04 |
Family
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2022/039696 WO2023074674A1 (ja) | 2021-10-29 | 2022-10-25 | 車両用灯具 |
Country Status (5)
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US (1) | US20250012421A1 (ja) |
EP (1) | EP4425044A1 (ja) |
JP (1) | JPWO2023074674A1 (ja) |
CN (1) | CN118202188A (ja) |
WO (1) | WO2023074674A1 (ja) |
Cited By (1)
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TWI860188B (zh) * | 2023-12-01 | 2024-10-21 | 國立勤益科技大學 | 具備混合發光源之車燈模組 |
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- 2022-10-25 EP EP22887000.2A patent/EP4425044A1/en active Pending
- 2022-10-25 CN CN202280072751.7A patent/CN118202188A/zh active Pending
- 2022-10-25 WO PCT/JP2022/039696 patent/WO2023074674A1/ja active Application Filing
- 2022-10-25 US US18/704,736 patent/US20250012421A1/en not_active Abandoned
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JP2021177998A (ja) | 2020-05-13 | 2021-11-18 | 株式会社三共 | 遊技機 |
Cited By (1)
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TWI860188B (zh) * | 2023-12-01 | 2024-10-21 | 國立勤益科技大學 | 具備混合發光源之車燈模組 |
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CN118202188A (zh) | 2024-06-14 |
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