WO2022131155A1 - 車載光源ユニット - Google Patents
車載光源ユニット Download PDFInfo
- Publication number
- WO2022131155A1 WO2022131155A1 PCT/JP2021/045520 JP2021045520W WO2022131155A1 WO 2022131155 A1 WO2022131155 A1 WO 2022131155A1 JP 2021045520 W JP2021045520 W JP 2021045520W WO 2022131155 A1 WO2022131155 A1 WO 2022131155A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rib
- extending
- end surface
- extending portion
- vehicle
- Prior art date
Links
- 239000000758 substrate Substances 0.000 claims description 145
- 238000012986 modification Methods 0.000 description 17
- 230000004048 modification Effects 0.000 description 17
- 230000003287 optical effect Effects 0.000 description 13
- 230000006866 deterioration Effects 0.000 description 12
- 238000009423 ventilation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- F21S41/14—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]
- F21S41/151—Light emitting diodes [LED] arranged in one or more lines
- F21S41/153—Light emitting diodes [LED] arranged in one or more lines arranged in a matrix
-
- 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
- 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 invention relates to an in-vehicle light source unit, specifically, an in-vehicle light source unit including a substrate on which a light source is mounted and a holding member for holding the substrate.
- the in-vehicle light source unit described in Patent Document 1 includes a substrate on which a light source is mounted and a heat sink as a holding member for holding the substrate, and the heat sink has ribs protruding to the substrate side on the left and right. It is provided one by one.
- the substrate is held by the heat sink by inserting these ribs into the notches formed in the substrate.
- the rib In the in-vehicle light source unit described in Patent Document 1, the rib is rectangular when viewed along the height direction of the rib, and the length from the upper end to the lower end perpendicular to the height direction of the rib is cut as described above. It is almost equal to the total length along the vertical direction of the notch. Therefore, in the in-vehicle light source unit described in Patent Document 1, the relative movement of the substrate and the heat sink in the vertical direction is restricted, and the substrate is positioned in the vertical direction with respect to the heat sink.
- Patent Document 1 In the in-vehicle light source unit described in Patent Document 1, as described above, since there is a gap between the side portion in the left-right direction of the rib and the side wall of the substrate, the left-right direction between the substrate and the heat sink depends only on the rib. It is difficult to accurately perform positioning in. Therefore, in Patent Document 1, a through hole is formed in the substrate, a pin is erected on the heat sink, and the pin is inserted into the through hole for positioning in the left-right direction.
- the accuracy of the surface processing at the contact portion is improved to reduce the rattling between the substrate and the heat sink at the contact portion. It needs to be suppressed.
- the area of the contact portion is large, it is necessary to improve the surface processing accuracy over a wide range, and it is difficult to perform the surface processing accurately over such a wide range. Therefore, the method of widening the width of the rectangular rib in the left-right direction as described above is easily affected by the accuracy of surface processing and may cause an optical axis shift.
- the contact portion between the rib and the side wall of the substrate is in line contact, which causes stress concentration on the contact portion.
- stress concentration can cause deformation of the ribs and the substrate starting from the contact portion, and deformation of the ribs and the substrate can cause deterioration of positioning accuracy.
- the present invention has been made in view of the above circumstances, and a vehicle-mounted vehicle capable of suppressing a decrease in positioning accuracy between a substrate on which a light source is mounted and a holding member holding the substrate and suppressing an optical axis deviation can be suppressed. It is intended to provide a light source unit.
- the in-vehicle light source unit of the present invention includes a holding member having a pair of ribs and a pair of fitting portions arranged on the holding member into which the ribs are fitted, and a light source is mounted.
- each of the ribs When viewed along the height direction of each of the ribs, each of the ribs extends in a direction different from the parallel direction of the pair of the ribs, and both end faces extend in a plane shape.
- the portion and a part of the extending portion project from a part of the extending portion to a side closer to each other or away from each other in a direction different from the extending direction of the extending portion, and the end surface is different from the both end faces of the extending portion.
- Each of the fitting portions includes a planar protruding portion having an in-plane direction, and each of the fitting portions faces a pair of first facing portions facing the both end faces of the extending portion and the end faces of the protruding portion. It is characterized by including a second facing portion.
- each rib when viewed along the height direction of the respective ribs, each rib includes a protrusion protruding toward a pair of ribs toward each other or away from each other in a predetermined direction.
- Each of the pair of fitting portions includes a second facing portion facing the end surface of the protruding portion. Therefore, when the substrate intends to move along the predetermined direction with respect to the holding member, the end surface of the protruding portion in one rib and the second facing portion in the fitting portion to which the rib fits come into contact with each other.
- the substrate may move along the predetermined direction with respect to the holding member due to the contact between the end surface of the protrusion on the other rib and the second facing portion on the other fitting portion to which the rib fits. Regulated, the substrate is positioned with respect to the holding member in this predetermined direction.
- each rib when viewed along the height direction of each rib, each rib includes an extending portion extending in a direction different from the predetermined direction, and is a pair.
- Each of the fitting portions includes a pair of first facing portions facing both end faces of the extending portion. Further, the in-plane direction of both end faces of the extending portion is different from the in-plane direction of the end face of the protruding portion. Therefore, when the substrate tries to move with respect to the holding member along a direction perpendicular to both the predetermined direction and the height direction, one of both end faces of the extending portion and a pair of fitting portions are used.
- the substrate is in the above-mentioned predetermined direction with respect to the holding member by contact with one of the facing portions or contact with the other of both end faces of the extending portion and the other of the pair of first facing portions of the fitting portion. And movement along a direction perpendicular to both of the height directions is restricted, and the substrate is positioned with respect to the holding member in a direction perpendicular to both the predetermined direction and the height direction.
- both end faces of the extending portion face the first facing portion of the fitting portion
- both end surfaces of the extending portion generally come into surface contact with the first facing portion.
- the planar end surface of the protruding portion faces the second facing portion of the fitting portion
- the end surface of the protruding portion substantially comes into surface contact with the second facing portion. Therefore, unlike the case where the rib is a cylinder, for example, it is possible to suppress the line contact between the rib and the fitting portion, and it is possible to suppress the stress concentration on the contact portion. Therefore, deformation of the ribs and the substrate starting from the contact portion can be suppressed, and deterioration of the positioning accuracy between the substrate and the holding member can be suppressed.
- the rib has a structure in which a protruding portion is added to the extending portion. Therefore, in order to position the ribs in both the predetermined direction and the direction perpendicular to the predetermined direction, for example, the rectangular rib is reduced as a whole, and the entire side surface of the rib is fitted into the fitting portion.
- the ribs can be made larger and the rigidity of the ribs can be ensured as compared with the case where the ribs are brought into contact with the ribs. Therefore, the deformation of the rib can be suppressed, and the deterioration of the positioning accuracy can be suppressed.
- the deterioration of the positioning accuracy between the substrate and the holding member can be suppressed and the optical axis deviation can be suppressed.
- the position of the end face of the protrusion in the extension direction is between the end faces of the extension.
- the fitting portion may be, for example, a through hole or a notch formed in the substrate.
- an R may be formed at a corner of the through hole or the notch in the extending direction. Even in such a case, when viewed along the height direction of the rib, if the position of the tip of the protruding portion in the extending direction is between both end faces of the extending portion, the end surface of the protruding portion becomes R. It is possible to avoid contact with each other, and it is possible to facilitate surface contact between the end surface of the protruding portion and the fitting portion.
- the protrusion When the position of the tip of the protrusion in the extension direction is between both end faces of the extension, the protrusion is the protrusion of the extension when viewed along the height direction of the rib. It may extend from the central portion in the extending direction in a direction perpendicular to the extending direction.
- each of the ribs protrudes from a part of the extending portion toward the side of the pair of the ribs approaching each other.
- each of the pair of fitting portions on the side close to the end of the substrate.
- the length of the inner region of the board from one fitting to the other is greater than the length of the inner region of the board from each fitting to the board. It tends to be longer than the length of the outer region of the substrate to the outer edge. Therefore, the inner region of the substrate tends to have higher rigidity than the outer region of the substrate.
- the tips of the respective protrusions can be brought into contact with the inner region of the substrate having high rigidity. Therefore, it is possible to suppress deformation of the substrate as compared with the case where the protruding portions of the respective ribs are projected to the side of the pair of ribs away from each other.
- the projecting direction of the protruding portion of each of the ribs is parallel to the left-right direction, and the contact area between the end surface of the extending portion and the first facing portion is the end surface of the protruding portion and the above. It may be larger than the contact area with the second facing portion.
- the ribs are more likely to receive a stronger force in the direction parallel to the vertical direction when the vehicle is running.
- the extending direction of the extending portion can be considered to be substantially parallel to the vertical direction. If the contact area between the end face of the extending portion and the first facing portion is made larger than the contact area between the end face of the protruding portion and the second facing portion, the extension due to the vibration in the vertical direction is mainly applied.
- the rigidity of the end face of the portion can be made stronger than the rigidity of the end face of the protruding portion to which a force due to vibration in the left-right direction is mainly applied. Therefore, it is possible to more effectively suppress the deformation of the ribs when the vehicle is running.
- the direction in which the protruding portion of each of the ribs protrudes is parallel to the left-right direction, and the length of the extending portion along the extending direction is larger than the length along the protruding direction of the protruding portion. May be long.
- the rigidity of the extending portion can be increased. Therefore, even when a strong force is applied to the ribs in the vertical direction when the vehicle is running, the deformation of the ribs can be suppressed more effectively.
- an in-vehicle light source unit in which a substrate on which a light source is mounted and a holding member that holds the substrate can be accurately positioned and optical axis deviation can be suppressed.
- FIG. 5 shows the lamp for vehicle which includes the vehicle-mounted light source unit which concerns on 1st Embodiment of this invention. It is an exploded perspective view which shows the vehicle-mounted light source unit shown in FIG. It is a front view which looks at the heat sink of an in-vehicle light source unit along the height direction of a rib. It is a perspective view which shows typically the 1st rib provided in the heat sink. It is a front view which looks at the state which a substrate is held by a heat sink along the height direction of a rib. It is a front view which shows the state of the rib shown in FIG. 5 and the vicinity thereof in an enlarged manner.
- FIG. 1 is a diagram showing a vehicle lamp equipped with an in-vehicle light source unit according to the present embodiment.
- the vehicle lighting fixture is configured as a vehicle headlight 1.
- Vehicle headlights are generally provided on the left and right sides of the front of the vehicle, respectively, and these vehicle headlights have substantially the same configuration except that they are mounted on the left and right sides. Therefore, only the vehicle headlights on one side of the left side and the right side will be described below.
- the vehicle headlight 1 of the present embodiment includes a housing 2, a lamp unit 3, and a support unit 4 as main configurations.
- FIG. 1 is a side view of the vehicle headlight 1, and FIG. 1 shows the housing 2 in cross section for easy understanding.
- the housing 2 mainly includes a lamp housing 11, a front cover 12, and a back cover 13.
- An opening is formed on the front side of the lamp housing 11, and the opening on the front side is closed by a translucent front cover 12 fixed to the lamp housing 11.
- An opening smaller than the opening on the front side is formed on the rear side of the lamp housing 11. This rear opening is closed by a back cover 13 fixed to the lamp housing 11.
- the space formed by the lamp housing 11, the front cover 12, and the back cover 13 is the light room R.
- the lamp unit 3 and the support unit 4 are housed in the lamp chamber R.
- the support unit 4 is attached to the lamp unit 3 from the rear side of the lamp unit 3 to support the lamp unit 3.
- the support unit 4 is fixed to the housing 2 by a configuration (not shown). Therefore, the lamp unit 3 is fixed to the housing 2 via the support unit 4.
- FIG. 2 is an exploded perspective view of the lamp unit 3 shown in FIG.
- the lamp unit 3 of the present embodiment includes a projection lens 20, a lens holder 25, and an in-vehicle light source unit LU as main configurations.
- the vehicle-mounted light source unit LU of the present embodiment includes a support plate 30, a reflector unit 40, a substrate 50, and a heat sink 80 as main configurations.
- the heat sink 80 is formed of a material having excellent heat dissipation, for example, made of metal.
- FIG. 3 is a front view of the heat sink 80 viewed along the height direction of the rib, which will be described later, and shows a state in which the heat sink 80 is viewed from the front side.
- the heat sink 80 of the present embodiment is formed in a substantially square shape in a front view, and has a ventilation portion 82 located slightly above the center of the heat sink 80 in the vertical direction and a bottom of the ventilation portion 82. It includes a board mounting portion 83 located on the side.
- a plurality of ventilation holes 82H penetrating in the front-rear direction are formed in the ventilation portion 82.
- a fan (not shown) is mounted on the rear side of the heat sink 80, and air is blown to the front side of the heat sink 80 through the ventilation holes 82H by the fan.
- a boss 87 extending forward is erected near the left end and the right end of the upper edge of the ventilation portion 82, respectively.
- the front surface 83f of the board mounting portion 83 is an inclined surface that projects forward from above to below.
- the upper edge of the board mounting portion 83 is connected to the lower edge of the ventilation portion 82.
- the front surface 83f of the substrate mounting portion 83 is provided with a boss 88, a boss 89, a pedestal 95, a pair of ribs such as a first rib 94L and a second rib 94R.
- Bosses 88 are provided near the left end and near the right end of the upper edge of the board mounting portion 83, and these bosses 88 extend forward. Further, the boss 89 is provided substantially directly below each boss 88, and extends forward.
- the pedestal 95 is a portion that protrudes forward from the front surface 83f of the board mounting portion 83, and has an outer shape that is substantially line-symmetric with respect to a line that passes through the center in the left-right direction of the heat sink 80 and extends in the vertical direction.
- the front surface 95f of the pedestal 95 is substantially parallel to the front surface 83f of the board mounting portion 83. At least a part of the substrate 50 is placed on the front surface 95f of the pedestal 95.
- the first rib 94L and the second rib 94R project forward from the front surface 83f of the board mounting portion 83.
- the height direction of each of the first rib 94L and the second rib 94R is perpendicular to the left-right direction.
- the first rib 94L is provided on the left side, which is one side with respect to a line extending in the vertical direction through the center in the left-right direction of the heat sink 80, and the second rib 94R is provided on the other side with reference to the above line. It is provided on a certain right side.
- each of the first rib 94L and the second rib 94R is provided at the same position in the vertical direction.
- the first rib 94L and the second rib 94R are arranged in parallel along the left-right direction. Further, the first rib 94L and the second rib 94R are located between the above-mentioned boss 88 and the boss 89 in the vertical direction. Further, the first rib 94L is located substantially directly below the boss 87 on the left side of the above-mentioned pair of bosses 87, and the second rib 94R is located substantially directly below the boss 87 on the right side.
- FIG. 4 is an enlarged perspective view of the first rib 94L shown in FIG. 2.
- the first rib 94L has an extending portion 94E and a protruding portion 94P, and the extending portion 94E and the protruding portion 94P project forward from the front surface 83f of the board mounting portion 83.
- This protruding direction is the height direction of the first rib 94L.
- the extending portion 94E extends along a direction perpendicular to both the height direction and the left-right direction of the rib.
- the extending portion 94E extends in a direction different from the direction in which the first rib 94L and the second rib 94R are arranged in parallel.
- the extending direction of the extending portion 94E is substantially parallel to the vertical direction.
- the length of the extending portion 94E in the extending direction is longer than the length of the extending portion 94E in the left-right direction.
- the protruding portion 94P protrudes to the right from the central portion in the extending direction of the extending portion 94E when viewed along the height direction of the rib, and in the present embodiment, the length of the protruding portion 94P in the protruding direction.
- the length of the protruding portion 94P in the protruding direction may be the same as or shorter than the length of the protruding portion 94P along the extending direction.
- the center of the extending portion 94E in the extending direction is the top surface 94T of the first rib 94L, and this top surface 94T is the frontmost surface of the first rib 94L.
- the extending portion 94E includes the top surface 94T, the first inclined surface 94ES1, the second inclined surface 94ES2, the upper end surface 94EU, and the lower end surface 94ED.
- the first inclined surface 94ES1 is a surface that gradually inclines backward from the upper end of the top surface 94T toward the upper side.
- the second inclined surface 94ES2 is a surface that gradually inclines backward from the lower end of the top surface 94T toward the lower side.
- the upper end surface 94EU is a planar surface connected to the upper end of the first inclined surface 94ES1 and parallel to both the height direction and the left-right direction of the rib.
- the lower end surface 94ED is a planar surface connected to the lower end of the second inclined surface 94ES2 and parallel to both the height direction and the left-right direction of the rib.
- the flat surface includes a surface that is curved to the extent that it can occur in manufacturing together with the flat surface.
- the protruding portion 94P includes an inclined surface 94PS and an end surface 94PT.
- the inclined surface 94PS is a surface that inclines backward from the right end of the top surface 94T toward the right side.
- the end surface 94PT is a planar surface connected to the right end of the inclined surface 94PS and parallel to both the height direction of the rib and the extension direction of the extending portion 94E. Therefore, the end surface 94PT of the protrusion 94P has an in-plane direction different from that of the upper end surface 94EU and the lower end surface 94ED of the extending portion 94E.
- the second rib 94R has the same configuration as the first rib 94L except that the protruding portion 94P protrudes to the left side.
- the substrate 50 is, for example, a plate-shaped member made of metal.
- the substrate 50 has an outer shape that is substantially line-symmetric with respect to a line extending in the vertical direction through the center in the left-right direction of the substrate 50.
- the substrate 50 is formed with a first through hole 51L and a second through hole 51R that penetrate the substrate 50.
- the first through hole 51L and the second through hole 51R have the same dimensions and the same outer shape of a substantially square shape, and the four corners of the first through hole 51L and the second through hole 51R have the same outer shape.
- the first through hole 51L is located near the left edge on one side with respect to a line extending in the vertical direction through the center in the left-right direction of the substrate 50, and the second through hole 51R is the above line. It is located near the edge on the right side, which is the other side of the reference.
- each of the first through hole 51L and the second through hole 51R is provided at the same position in the vertical direction.
- the first rib 94L by inserting the first rib 94L into the first through hole 51L, a part of the first rib 94L comes into contact with the inner wall 52 of the substrate 50 defining the first through hole 51L. In this way, the first rib 94L fits into the first through hole 51L. Further, by inserting the second rib 94R into the second through hole 51R, a part of the second rib 94R comes into contact with the inner wall 52 of the substrate 50 defining the second through hole 51R. In this way, the second rib 94R fits into the second through hole 51R. As a result, the substrate 50 is held by the heat sink 80 in a state where the substrate 50 is arranged on the heat sink 80.
- the first through hole 51L and the second through hole 51R function as a fitting portion into which the rib is fitted, and the heat sink 80 functions as a holding member for holding the substrate 50.
- the in-plane direction of the inner wall 52 of the substrate 50 is substantially parallel to the height direction of the first rib 94L and the second rib 94R.
- FIG. 5 is a front view showing a state in which the substrate 50 is arranged on the heat sink 80 and held by the heat sink 80 along the height direction of the rib.
- a plurality of light sources 63a and a plurality of light sources 63b are mounted on the front surface 50f of the substrate 50.
- These light sources 63a and 63b may be, for example, LEDs (Light Emitting Diodes).
- the plurality of light sources 63a and 63b are arranged in two upper and lower stages along the left-right direction in the region between the first through hole 51L and the second through hole 51R in the left-right direction.
- the light sources 63a are arranged in parallel in the upper stage, and emit light that forms a low beam, for example.
- the light sources 63b are arranged in parallel in the lower stage, and emit light that forms a high beam, for example.
- a connector 64 connected to external power is mounted directly under the plurality of light sources 63a and 63b in the front surface 50f of the substrate 50, and the connector 64 and the plurality of light sources 63a and 63b form a power supply circuit 65. It is electrically connected via. Therefore, when power is supplied to the connector 64, the plurality of light sources 63a and 63b emit light.
- the protruding portions 94P of the first rib 94L and the second rib 94R are the rows of the light source 63a and the row of the light source 63b. It is located between and.
- the reflector unit 40 is fixed to the heat sink 80 via, for example, a screw or the like in a state where the substrate 50 is sandwiched between the reflector unit 40 and the heat sink 80.
- the reflector unit 40 is equipped with a reflector, a shade, and the like that reflect light emitted from a plurality of light sources 63a and 63b and guide the light to the projection lens 20.
- the light emitted from the plurality of light sources 63a and 63b becomes light that forms, for example, a low beam or a high beam through these reflectors and shades and the projection lens 20.
- the support plate 30 is a member obtained by bending an elastic metal plate-shaped member.
- the support plate 30 covers the above-mentioned connector 64 and the like mounted on the substrate 50 in a state of being fixed to the heat sink 80. Therefore, even when the vehicle headlight 1 is exposed to sunlight, the support plate 30 shields the connector 64 and the like from light, and the connector 64 and the like are prevented from being damaged by the sunlight.
- the lens holder 25 is a substantially cylindrical member extending in the front-rear direction.
- the lens holder 25 is fixed to the heat sink 80 so as to sandwich the substrate 50, the reflector unit 40, the support plate 30, and the like with the heat sink 80.
- a projection lens 20 is fixed to the front end of the lens holder 25, and the projection lens 20 closes the opening on the front side of the lens holder 25.
- FIG. 6 is a front view of the rib shown in FIG. 5 and its vicinity as viewed along the height direction of the rib, and the rib and its vicinity are enlarged and schematically shown.
- the inner wall 52 of the substrate 50 defining the first through hole 51L and the inner wall 52 of the substrate 50 defining the second through hole 51R each have an R portion 52R formed at four corners and the above-mentioned R portion 52R.
- the extending portion 94E includes an upper straight portion 52U in the extending direction, a lower straight portion 52D in the extending direction, a left straight portion 52L, and a right straight portion 52I.
- Each of the straight portions 52U and 52D extends along the left-right direction, and each of the straight portions 52L and 52I extends along the extending direction of the above-mentioned extending portion 94E.
- each of the first rib 94L and the second rib 94R has a T-shaped outer shape when viewed along the height direction of these ribs, and has the same dimensions.
- the first surface of the extending portion 94E is perpendicular to the height direction of the rib through the upper end surface 94EU and the lower end surface 94ED which are both end faces of the extending portion 94E in the extending direction and the end surface 94PT of the protruding portion 94P.
- the cross-sectional shapes of the rib 94L and the second rib 94R are the same in the height direction of the rib.
- the extending portion 94E and the protruding portion 94P of the first rib 94L and the second rib 94R respectively, have a rectangular shape when viewed along the height direction of the rib.
- the length VL1 along the extending direction of the extending portion 94E is along the extending direction of each of the first through hole 51L and the second through hole 51R. It is almost the same length as the total length VL2.
- the length VL1 along the extending direction of the extending portion 94E may be shorter than the total length VL2 of the through holes 51L and 51R by about 5/100 or less.
- the length HL1a along the left-right direction of the extending portion 94E is shorter than the length HL2 along the left-right direction of each of the first through hole 51L and the second through hole 51R.
- the length HL1a of the extending portion 94E along the left-right direction is substantially equal to the length of the straight portions 52U and 52D of the inner wall 52 along the left-right direction. Therefore, in the present embodiment, in each of the first rib 94L and the second rib 94R, the upper end surface 94EU of the extending portion 94E faces the straight portion 52U of the inner wall 52 and becomes the straight portion 52U along the left-right direction. It is substantially in surface contact and does not abut on the R portion 52R of the inner wall 52. Further, in each of the first rib 94L and the second rib 94R, the lower end surface 94ED of the extending portion 94E faces the straight portion 52D of the inner wall 52. As described above, the inner wall 52 defining the first through hole 51L and the second through hole 51R, which are the fitting portions, is the straight portion 52U, 52D as a pair of first facing portions facing both end faces of the extending portion 94E. including.
- the protruding portion 94P of the first rib 94L protrudes to the right with respect to the extending portion 94E of the first rib 94L
- the protruding portion 94P of the second rib 94R protrudes to the left with respect to the extending portion 94E of the second rib 94R. It stands out.
- the protruding portions 94P of the first rib 94L and the second rib 94R project toward each other of the first rib 94L and the second rib 94R.
- the center of the protruding portion 94P in the extending direction of the extending portion 94E and the extending direction thereof is located on the same line extending along the left-right direction with the center of the extending portion 94E in the above.
- the length HL1b along the left-right direction of the protruding portion 94P has a length substantially equal to the radius of the R portion 52R of the inner wall 52.
- the length VL1b of the protruding portion 94P along the extending direction of the extending portion 94E is substantially equal to the length of the straight portion 52I of the inner wall 52 along the extending direction.
- the end surface 94PT of the protruding portion 94P of the first rib 94L faces the straight portion 52I of the inner wall 52 and substantially surface-contacts along the extending direction of the extending portion 94E, and the R of the inner wall 52 It does not come into contact with the portion 52R.
- the inner wall 52 defining the first through hole 51L which is the fitting portion, includes the straight portion 52I as the second facing portion facing the end surface 94PT of the protruding portion 94P of the first rib 94L. Further, when viewed along the height direction of the rib, the position of the end surface 94PT of the protruding portion 94P is between the upper end surface 94EU and the lower end surface 94ED of the extending portion 94E in the extending direction of the extending portion 94E.
- the length VL1b of the protruding portion 94P along the extending direction is substantially equal to the length of the straight portion 52L of the inner wall 52 along the extending direction.
- the end surface 94PT of the second rib 94R faces the straight portion 52L of the inner wall 52 and substantially surface-contacts the straight portion 52L along the extending direction of the extending portion 94E, and the R of the inner wall 52 It does not come into contact with the portion 52R.
- the inner wall 52 defining the second through hole 51R which is the fitting portion, includes the straight portion 52L as the second facing portion facing the end surface 94PT of the protruding portion 94P of the second rib 94R.
- the position of the end surface 94PT of the protruding portion 94P is between the upper end surface 94EU and the lower end surface 94ED of the extending portion 94E in the extending direction of the extending portion 94E. ..
- the total length HL1 along the left-right direction of each of the first rib 94L and the second rib 94R is along the left-right direction of the length HL1a and the protrusion 94P along the left-right direction of the extending portion 94E. It is the sum with the length HL1b. Therefore, the length HL1a of the upper end surface 94EU and the lower end surface 94ED of the extending portion 94E along the left-right direction is shorter than the length HL1 along the left-right direction of the rib. Further, the total length of each of the first rib 94L and the second rib 94R along the extending direction is equal to the length VL1 of the extending portion 94E along the extending direction. Therefore, the length VL1b of the end face 94PT in the protrusion 94P along the extending direction is shorter than the length of the rib along the extending direction.
- the vehicle-mounted light source unit LU of the present embodiment is arranged on the heat sink 80 and the heat sink 80 as a holding member having the first rib 94L and the second rib 94R, which are a pair of ribs, and the first rib.
- a substrate 50 including a first through hole 51L and a second through hole 51R as a pair of fitting portions into which the 94L and the second rib 94R are fitted and on which the light sources 63a and 63b are mounted is provided.
- Each of the first rib 94L and the second rib 94R includes an extending portion 94E and a protruding portion 94P.
- the extending portion 94E of the first rib 94L and the second rib 94R is in the parallel direction of the first rib 94L and the second rib 94R.
- the upper end surface 94EU and the lower end surface 94ED, which are both end faces in the extension direction, are planar.
- the protruding portions 94P of the first rib 94L and the second rib 94R are from a part of the extending portion 94E to the first rib 94L and in a direction different from the extending direction of the extending portion 94E.
- each of the first through hole 51L and the second through hole 51R has a pair of first facing portions facing the upper end surface 94EU and the lower end surface 94ED of the extending portion 94E, and an end surface 94PT of the protruding portion 94P. Includes a second facing portion facing the surface.
- each of the first rib 94L and the second rib 94R when viewed along the respective height directions of the first rib 94L and the second rib 94R, each of the first rib 94L and the second rib 94R is in the left-right direction.
- Each of the inner wall 52 that includes the protruding portion 94P that protrudes toward each other of the first rib 94L and the second rib 94R and defines the first through hole 51L and the second through hole 51R that are fitting portions is projected.
- a second facing portion facing the end face 94PT of the portion 94P is included.
- the first rib 94L and the second rib 94R when viewed along the respective height directions of the first rib 94L and the second rib 94R, the first rib 94L and the second rib 94R are left and right respectively.
- An extending portion 94E extending in a direction different from the direction is included, and the inner wall 52 defining the first through hole 51L and the second through hole 51R is formed on the upper end surface 94EU and the lower end surface 94ED of the extending portion 94E, respectively. It includes a pair of straight portions 52U and 52D as a pair of first facing portions facing each other.
- the in-plane directions of the upper end surface 94EU and the lower end surface 94ED of the extending portion 94E are parallel to both the left-right direction and the height direction of the rib, the extending direction of the extending portion 94E and the height of the rib are parallel. It is different from the in-plane direction of the end surface 94PT of the projecting portion 94P parallel to both in the radial direction.
- the substrate 50 when the substrate 50 tries to move with respect to the heat sink 80 along the extending direction perpendicular to both the left-right direction and the height direction of the rib, the upper end surface 94EU and the straight line portion 52U of the extending portion 94E The substrate 50 moves along the direction perpendicular to both the left-right direction and the height direction of the rib with respect to the heat sink 80 due to the contact between the lower end surface 94ED of the extending portion 94E and the straight portion 52I. Is regulated. In this way, the substrate 50 is positioned with respect to the heat sink 80 in the direction perpendicular to both the left-right direction and the height direction of the rib.
- the direction perpendicular to both the left-right direction and the height direction of the rib is substantially parallel to the vertical direction. Therefore, according to the vehicle-mounted light source unit LU, the substrate 50 is brought into contact with the upper end surface 94EU of the extending portion 94E and the straight portion 52U, or with the lower end surface 94ED of the extending portion 94E and the straight portion 52I. Is restricted from moving in the vertical direction with respect to the heat sink 80, and the substrate 50 is positioned with respect to the heat sink 80 in the vertical direction.
- the upper end surface 94EU of the extending portion 94E is the straight portion 52U of the inner wall 52
- the lower end surface 94ED of the extending portion 94E is the straight portion 52D of the inner wall 52 and the protruding portion.
- the end surface 94PT of the 94P is substantially in surface contact with the straight portions 52I and 52L of the inner wall 52, respectively. Therefore, unlike the case where the rib is a cylinder, for example, it is possible to suppress the line contact between the rib and the fitting portion, and it is possible to suppress the stress concentration on the contact portion. Therefore, the deformation of the ribs and the substrate 50 starting from the contact portion can be suppressed, and the deterioration of the positioning accuracy between the substrate 50 and the heat sink 80 as the holding member can be suppressed.
- the rib has a configuration in which a protruding portion 94P is added to the extending portion 94E. Therefore, in order to position the ribs in both the left-right direction and the direction perpendicular to the left-right direction, for example, the ribs are reduced as a whole and brought into contact with the through holes. Can be increased, and the rigidity of the rib can be ensured. Therefore, the deformation of the rib can be suppressed, and the deterioration of the positioning accuracy can be suppressed.
- the vehicle-mounted light source unit LU of the present embodiment since the upper end surface 94EU and the lower end surface 94ED of the extending portion 94E abut on the inner wall 52 of the substrate 50, the entire end surface of the rib in the extending direction of the extending portion 94E The contact area between the rib and the inner wall 52 in the extending direction can be reduced as compared with the case where the wall comes into contact with the inner wall 52.
- the contact area between the rib and the inner wall 52 in the left-right direction can be reduced.
- the contact area between the rib and the inner wall 52 can be made smaller than that when the entire side surface of the rib in the left-right direction abuts on the inner wall 52, so that the accuracy of surface processing can be reduced. It is not easily affected by the above, and it is possible to suppress the optical axis deviation of the light emitted from the light sources 63a and 63b.
- the deterioration of the positioning accuracy between the substrate 50 and the heat sink 80 can be suppressed and the optical axis deviation can be suppressed.
- the position of the end surface 94PT of the protruding portion 94P in the extending direction of the extending portion 94E is the extending portion. It is between the upper end surface 94EU and the lower end surface 94ED of 94E. According to such a configuration, even when the R portion 52R is formed at the corner of the inner wall 52 of the substrate 50 by the step of forming the through hole in the substrate 50, the end surface 94PT of the protruding portion 94P abuts on the R portion 52R. This can be avoided, and the end surface 94PT of the protruding portion 94P can be easily brought into contact with the inner wall 52 of the substrate 50.
- the protruding portion 94P when viewed along the height direction of the rib, the protruding portion 94P is located in the extending direction from the central portion of the extending portion 94E in the extending direction. It extends in the left-right direction perpendicular to. In this way, by projecting the projecting portion 94P from the central portion in the extending direction of the extending portion 94E in the direction perpendicular to the extending direction, the through hole as the fitting portion is formed at the corner in the extending direction. It is possible to more effectively prevent the protruding portion 94P from coming into contact with the R portion 52R.
- the protruding portion 94P of the first rib 94L and the protruding portion 94P of the second rib 94R extend.
- a part of the 94E protrudes from the first rib 94L and the second rib 94R toward each other.
- many wirings such as the power feeding circuit 65 connected to the light sources 63a and 63b tend to be formed. Therefore, in order to avoid this wiring and the like, it is preferable to form the first through hole 51L and the second through hole 51R on the side close to the end of the substrate 50.
- the length of the inner region of the substrate 50 from the first through hole 51L to the second through hole 51R is larger. It tends to be longer than the length of the outer region of the substrate 50 from the through holes 51L and 51R to the outer edge of the substrate 50. Therefore, the inner region of the substrate 50 tends to have higher rigidity than the outer region of the substrate 50.
- the end faces 94PT of the respective protrusions 94P can be formed on the substrate 50 having high rigidity. It can be brought into contact with the inner region. Therefore, the deformation of the substrate 50 can be suppressed as compared with the case where the protruding portions 94P of the first rib 94L and the second rib 94R are projected to the sides of the first rib 94L and the second rib 94R away from each other. ..
- the vehicle headlight of the present embodiment is different in that the shapes of the first rib and the second rib in the vehicle-mounted light source unit LU are different from the shapes of the first rib 94L and the second rib 94R in the first embodiment. Except for this, it has the same configuration as the vehicle headlight 1 in the first embodiment. Therefore, hereinafter, only the relationship between the first rib and the second rib in the present embodiment and the first through hole and the second through hole of the substrate will be described.
- FIG. 7 is a diagram showing a part of the vehicle-mounted light source unit LU according to the present embodiment from the same viewpoint as in FIG.
- each of the first rib 94L and the second rib 94R has an outer shape symmetrical to each other when viewed along the height direction of the rib, and has the same dimensions.
- Each of the first rib 94L and the second rib 94R includes an extending portion 94E and a protruding portion 94P.
- the extending portion 94E is a rectangular portion extending along a direction substantially parallel to the vertical direction.
- the protruding portion 94P of the first rib 94L is a trapezoidal portion protruding to the right from a part of the extending portion 94E.
- the lower bottom of the protruding portion 94P of the first rib 94L coincides with the right side portion of the extending portion 94E of the first rib 94L, and the lower bottom and the right side portion are shown by broken lines in FIG. 7.
- the protruding portion 94P of the second rib 94R is a trapezoidal portion protruding to the left from a part of the extending portion 94E.
- the protruding portions 94P of the first rib 94L and the second rib 94R project toward each other of the first rib 94L and the second rib 94R.
- the end surface 94PT which is the upper bottom of the protruding portion 94P of the first rib 94L, is the straight portion 52I on the right side of the inner wall 52 defining the first through hole 51L of the substrate 50. Facing each other, the surface contacts the straight portion 52I along the extending direction of the extending portion 94E, and does not abut on the R portion 52R of the inner wall 52. Therefore, the position of the end surface 94PT of the protrusion 94P in the extension direction is between the upper end surface 94EU and the lower end surface 94ED of the extension portion 94E.
- the end surface 94PT which is the upper bottom of the second rib 94R, faces the straight portion 52L on the left side of the inner wall 52 defining the second through hole 51R of the substrate 50 and is oriented along the extending direction of the extending portion 94E. It generally contacts the straight portion 52L and does not contact the R portion 52R of the inner wall 52. Therefore, the position of the end surface 94PT of the protrusion 94P in the extension direction is between the upper end surface 94EU and the lower end surface 94ED of the extension portion 94E.
- the inner wall 52 defining the first through hole 51L and the second through hole 51R, which are the fitting portions, is the straight portion 52I as the second facing portion facing the end surface 94PT of the protruding portion 94P. , 52L is included.
- the extending portion 94E has the same configuration as that of the first embodiment. Therefore, in each of the first rib 94L and the second rib 94R, the length of the extending portion 94E along the extending direction is along the extending direction of each of the first through hole 51L and the second through hole 51R. It is almost the same length as the total length. Further, the length of the extending portion 94E along the left-right direction is shorter than the length of the first through hole 51L and the second through hole 51R along the left-right direction.
- the upper end surface 94EU of the extending portion 94E faces the straight portion 52U of the inner wall 52 and substantially surface contact with the straight portion 52U along the left-right direction. However, it does not come into contact with the R portion 52R of the inner wall 52. Further, in each of the first rib 94L and the second rib 94R, the lower end surface 94ED of the extending portion 94E faces the straight portion 52D of the inner wall 52.
- the vehicle-mounted light source unit LU of the present embodiment is arranged on the heat sink 80 and the heat sink 80 as a holding member having the first rib 94L and the second rib 94R, which are a pair of ribs, and the first rib.
- a substrate 50 including a first through hole 51L and a second through hole 51R and on which light sources 63a and 63b are mounted is provided as a pair of fitting portions into which the 94L and the second rib 94R are fitted.
- Each of the first rib 94L and the second rib 94R includes an extending portion 94E and a protruding portion 94P.
- the extending portion 94E of the first rib 94L and the second rib 94R is in the parallel direction of the first rib 94L and the second rib 94R.
- the upper end surface 94EU and the lower end surface 94ED, which are both end faces in the extension direction, are planar.
- the protruding portions 94P of the first rib 94L and the second rib 94R are from a part of the extending portion 94E to the first rib 94L and in a direction different from the extending direction of the extending portion 94E.
- the second rib 94R protrudes toward each other, and the end surface 94PT in the protrusion direction is a flat surface having an in-plane direction different from the upper end surface 94EU and the lower end surface 94ED of the extending portion 94E.
- each of the first through hole 51L and the second through hole 51R as the fitting portion has a pair of first facing portions facing the upper end surface 94EU and the lower end surface 94ED of the extending portion 94E, and the end surface of the protruding portion 94P. Includes a second facing portion facing the 94PT.
- the in-vehicle light source unit LU of the present embodiment the deterioration of the positioning accuracy between the substrate 50 and the heat sink 80 can be suppressed and the optical axis deviation can be suppressed as in the first embodiment.
- the position of the end surface 94PT of the protruding portion 94P in the extending direction of the extending portion 94E is between the upper end surface 94EU and the lower end surface 94ED of the extending portion 94E. Is. Therefore, it is possible to prevent the end surface 94PT of the protruding portion 94P from coming into contact with the R portion 52R of the inner wall 52, and it becomes easy to bring the end surface 94PT of the protruding portion 94P into contact with the inner wall 52.
- the projecting portion 94P of the first rib 94L and the projecting portion 94P of the second rib 94R project toward the side where the first rib 94L and the second rib 94R approach each other. do. Therefore, the deformation of the substrate 50 can be suppressed as compared with the case where the protruding portions 94P of the first rib 94L and the second rib 94R are projected to the sides of the first rib 94L and the second rib 94R away from each other. can.
- the vehicle headlight of the present embodiment is different in that the shapes of the first rib and the second rib in the vehicle-mounted light source unit LU are different from the shapes of the first rib 94L and the second rib 94R in the first embodiment. Except for this, it has the same configuration as the vehicle headlight 1 in the first embodiment. Therefore, hereinafter, only the relationship between the first rib and the second rib in the present embodiment and the first through hole and the second through hole of the substrate will be described.
- FIG. 8 is a diagram showing a part of the vehicle-mounted light source unit LU according to the present embodiment from the same viewpoint as in FIG.
- each of the first rib 94L and the second rib 94R has an outer shape symmetrical to each other when viewed along the height direction of the rib, and has the same dimensions.
- Each of the first rib 94L and the second rib 94R includes an extending portion 94E and a protruding portion 94P.
- the extending portion 94E is a rectangular portion extending along a direction substantially parallel to the vertical direction.
- the protruding portion 94P of the first rib 94L is formed in a parallel four-sided shape protruding from the lower half side of the extending portion 94E to the right and upward with respect to the extending portion 94E.
- the protruding portion 94P of the first rib 94L is tilted at an angle larger than 0 ° and smaller than 90 ° with respect to the line extending along the extending direction of the extending portion 94E, for example, this angle is It is set to 45 °.
- the protruding portion 94P of the second rib 94R is formed in a parallel four-sided shape protruding from the extending portion 94E of the second rib 94R to the left and upward with respect to the extending portion 94E.
- the protruding portion 94P of the second rib 94R is tilted at an angle larger than 0 ° and smaller than 90 ° with respect to the line extending along the extending direction of the extending portion 94E, for example, this angle is It is set to 45 °.
- the protruding portions 94P of the first rib 94L and the second rib 94R project toward each other in the left-right direction of the first rib 94L and the second rib 94R.
- the end surface 94PT in the protruding portion 94P of the first rib 94L is the inner wall 52 defining the first through hole 51L of the substrate 50.
- the straight portion 52I on the right side is opposed to the straight portion 52I, and the straight portion 52I is substantially in surface contact with the straight portion 52I along the extending direction of the extending portion 94E, and is not in contact with the R portion 52R of the inner wall 52. Therefore, the position of the end surface 94PT of the protrusion 94P in the extension direction is between the upper end surface 94EU and the lower end surface 94ED of the extension portion 94E.
- the end surface 94PT in the second rib 94R faces the straight portion 52L on the left side of the inner wall 52 defining the second through hole 51R of the substrate 50 and extends. It makes substantially surface contact with the straight portion 52L along the extending direction of 94E, and does not abut with the R portion 52R of the inner wall 52. Therefore, the position of the end surface 94PT of the protrusion 94P in the extension direction is between the upper end surface 94EU and the lower end surface 94ED of the extension portion 94E.
- the inner wall 52 defining the first through hole 51L and the second through hole 51R, which are the fitting portions, is the straight portion 52I as the second facing portion facing the end surface 94PT of the protruding portion 94P. , 52L is included.
- the extending portion 94E has the same configuration as that of the first embodiment. Therefore, in each of the first rib 94L and the second rib 94R, the length of the extending portion 94E along the extending direction is along the extending direction of each of the first through hole 51L and the second through hole 51R. It is almost the same length as the total length. Further, the length of the extending portion 94E along the left-right direction is shorter than the length of the first through hole 51L and the second through hole 51R along the left-right direction.
- the upper end surface 94EU of the extending portion 94E faces the straight portion 52U of the inner wall 52 and substantially surface contact with the straight portion 52U along the left-right direction. However, it does not come into contact with the R portion 52R of the inner wall 52. Further, in each of the first rib 94L and the second rib 94R, the lower end surface 94ED of the extending portion 94E faces the straight portion 52D of the inner wall 52.
- the inner wall 52 defining the first through hole 51L and the second through hole 51R which are fitting portions, serves as a pair of first facing portions facing both end faces of the extending portion 94E. Includes straight portions 52U and 52D.
- the vehicle-mounted light source unit LU of the present embodiment is arranged on the heat sink 80 and the heat sink 80 as a holding member having the first rib 94L and the second rib 94R, which are a pair of ribs, and the first rib.
- a substrate 50 including a first through hole 51L and a second through hole 51R and on which light sources 63a and 63b are mounted is provided as a pair of fitting portions into which the 94L and the second rib 94R are fitted.
- Each of the first rib 94L and the second rib 94R includes an extending portion 94E and a protruding portion 94P.
- the extending portion 94E of the first rib 94L and the second rib 94R is in the parallel direction of the first rib 94L and the second rib 94R.
- the upper end surface 94EU and the lower end surface 94ED, which are both end faces in the extension direction, are planar.
- the protruding portions 94P of the first rib 94L and the second rib 94R are from a part of the extending portion 94E to the first rib 94L and in a direction different from the extending direction of the extending portion 94E.
- each of the first through hole 51L and the second through hole 51R has a pair of first facing portions facing the upper end surface 94EU and the lower end surface 94ED of the extending portion 94E, and an end surface 94PT of the protruding portion 94P. Includes a second facing portion facing the surface.
- the in-vehicle light source unit LU of the present embodiment the deterioration of the positioning accuracy between the substrate 50 and the heat sink 80 can be suppressed and the optical axis deviation can be suppressed as in the first embodiment.
- the position of the end surface 94PT of the protruding portion 94P in the extending direction of the extending portion 94E is between the upper end surface 94EU and the lower end surface 94ED of the extending portion 94E. Is. Therefore, it is possible to prevent the end surface 94PT of the protruding portion 94P from coming into contact with the R portion 52R of the inner wall 52, and it becomes easy to bring the end surface 94PT of the protruding portion 94P into contact with the inner wall 52.
- the projecting portion 94P of the first rib 94L and the projecting portion 94P of the second rib 94R project toward the side where the first rib 94L and the second rib 94R approach each other. do. Therefore, the deformation of the substrate 50 can be suppressed as compared with the case where the protruding portions 94P of the first rib 94L and the second rib 94R are projected to the sides of the first rib 94L and the second rib 94R away from each other. can.
- the vehicle headlight of the present embodiment is different in that the shapes of the first rib and the second rib in the vehicle-mounted light source unit LU are different from the shapes of the first rib 94L and the second rib 94R in the first embodiment. Except for this, it has the same configuration as the vehicle headlight 1 in the first embodiment. Therefore, hereinafter, only the relationship between the first rib and the second rib in the present embodiment and the first through hole and the second through hole of the substrate will be described.
- FIG. 9 is a diagram showing a part of the vehicle-mounted light source unit LU according to the present embodiment from the same viewpoint as in FIG.
- the protruding portion 94P of the first rib 94L of the present embodiment is referred to from the extending portion 94E of the first rib 94L with the extending portion 94E as a reference when the protrusion 94P of the first rib 94L is along the height direction of the rib. It is formed in a rectangular shape protruding to the left.
- the protruding portion 94P of the second rib 94R protrudes to the right from the extending portion 94E of the second rib 94R with respect to the extending portion 94E when viewed along the height direction of the rib. It is formed in a rectangular shape. As described above, in the present embodiment, the protruding portions 94P of the first rib 94L and the second rib 94R are the first in the left-right direction perpendicular to the height direction of the rib and different from the extending direction of the extending portion 94E. The rib 94L and the second rib 94R project to the side away from each other.
- the substrate 50 tends to move to the left side with respect to the heat sink 80, the substrate to the left side is brought into contact with the end surface 94PT of the protruding portion 94P of the second rib 94R and the straight line portion 52I on the inner wall 52 of the substrate 50.
- the movement of 50 is restricted.
- the substrate 50 is positioned in the left-right direction by the respective protrusions 94P of the first rib 94L and the second rib 94R.
- the vehicle-mounted light source unit LU of the present embodiment is arranged on the heat sink 80 and the heat sink 80 as a holding member having the first rib 94L and the second rib 94R, which are a pair of ribs, and the first rib.
- a substrate 50 including a first through hole 51L and a second through hole 51R and on which light sources 63a and 63b are mounted is provided as a pair of fitting portions into which the 94L and the second rib 94R are fitted.
- Each of the first rib 94L and the second rib 94R includes an extending portion 94E and a protruding portion 94P.
- the extending portion 94E of the first rib 94L and the second rib 94R is in the parallel direction of the first rib 94L and the second rib 94R.
- the upper end surface 94EU and the lower end surface 94ED, which are both end faces in the extension direction, are planar.
- the protruding portions 94P of the first rib 94L and the second rib 94R are from a part of the extending portion 94E to the first rib 94L and in a direction different from the extending direction of the extending portion 94E.
- each of the first through hole 51L and the second through hole 51R has a pair of first facing portions facing the upper end surface 94EU and the lower end surface 94ED of the extending portion 94E, and an end surface 94PT of the protruding portion 94P. Includes a second facing portion facing the surface.
- the in-vehicle light source unit LU of the present embodiment the deterioration of the positioning accuracy between the substrate 50 and the heat sink 80 can be suppressed and the optical axis deviation can be suppressed as in the first embodiment.
- the position of the end surface 94PT of the protruding portion 94P in the extending direction of the extending portion 94E is between the upper end surface 94EU and the lower end surface 94ED of the extending portion 94E. Is. Therefore, it is possible to prevent the end surface 94PT of the protruding portion 94P from coming into contact with the R portion 52R of the inner wall 52, and it becomes easy to bring the end surface 94PT of the protruding portion 94P into contact with the inner wall 52.
- the shapes of the first rib and the second rib in the vehicle-mounted light source unit LU are different from the shapes of the first rib 94L and the second rib 94R in the first embodiment.
- the shapes of the first through hole and the second through hole are different from the shapes of the first through hole 51L and the second through hole 51R in the first embodiment. It has the same configuration as the headlight 1. Therefore, hereinafter, only the relationship between the first rib and the second rib in the present embodiment and the first through hole and the second through hole of the substrate will be described.
- FIG. 10 is a diagram showing a part of the vehicle-mounted light source unit LU according to the present embodiment from the same viewpoint as in FIG.
- each of the first through hole 51L and the second through hole 51R of the present embodiment has the same outer shape and dimensions.
- Each of the first through hole 51L and the second through hole 51R is formed in a substantially square shape when viewed along the height direction of the rib, and the first through hole 51L and the second through hole of the first embodiment are formed.
- the R parts at the four corners are so small that they cannot be visually recognized. Therefore, in the present embodiment, it can be considered that the R portions do not exist at the four corners of the inner wall 52.
- each of the first rib 94L and the second rib 94R has outer shapes symmetrical to each other when viewed along the height direction of the ribs, and have the same dimensions. Have.
- Each of the first rib 94L and the second rib 94R includes an extending portion 94E and a protruding portion 94P.
- the extending portion 94E is a rectangular portion extending along a direction substantially parallel to the vertical direction.
- the protruding portion 94P of the first rib 94L is a rectangular portion protruding from the lower half side of the extending portion 94E of the first rib 94L to the right side. Therefore, the first rib 94L of the present embodiment is formed in an L shape as a whole. Further, when viewed along the height direction of the rib, the end surface 94PT in the protruding portion 94P of the first rib 94L is substantially below the straight portion 52I on the right side of the inner wall 52 of the substrate 50 defining the first through hole 51L.
- the protruding portion 94P of the second rib 94R is a rectangular portion protruding from the lower half side of the extending portion 94E of the second rib 94R to the left side. Therefore, the second rib 94R of the present embodiment is formed in an inverted L shape as a whole.
- the end surface 94PT in the protruding portion 94P of the second rib 94R is substantially below the straight portion 52L on the left side of the inner wall 52 of the substrate 50 defining the second through hole 51R. It faces the half and substantially surface-contacts with the substantially lower half of the straight portion 52L along the extending direction of the extending portion 94E, and does not abut with the substantially upper half of the straight portion 52L of the inner wall 52.
- the inner wall 52 defining the first through hole 51L and the second through hole 51R, which are the fitting portions is the straight portion 52I as the second facing portion facing the end surface 94PT of the protruding portion 94P. , 52L is included.
- the extending portion 94E has the same configuration as that of the first embodiment. Therefore, in each of the first rib 94L and the second rib 94R, the length of the extending portion 94E along the extending direction is along the extending direction of each of the first through hole 51L and the second through hole 51R. It is almost the same length as the total length. Further, the length of the extending portion 94E along the left-right direction is shorter than the length of the first through hole 51L and the second through hole 51R along the left-right direction.
- the upper end surface 94EU of the extending portion 94E in the extending direction faces the straight portion 52U of the inner wall 52 and is a straight portion 52U along the left-right direction. And does not come into contact with the corner of the inner wall 52 or its vicinity.
- the lower end surface 94ED of the extending portion 94E faces the straight portion 52D of the inner wall 52.
- the inner wall 52 defining the first through hole 51L and the second through hole 51R, which are fitting portions serves as a pair of first facing portions facing both end faces of the extending portion 94E. Includes straight portions 52U and 52D.
- the vehicle-mounted light source unit LU of the present embodiment is arranged on the heat sink 80 and the heat sink 80 as a holding member having the first rib 94L and the second rib 94R, which are a pair of ribs, and the first rib.
- a substrate 50 including a first through hole 51L and a second through hole 51R and on which light sources 63a and 63b are mounted is provided as a pair of fitting portions into which the 94L and the second rib 94R are fitted.
- Each of the first rib 94L and the second rib 94R includes an extending portion 94E and a protruding portion 94P.
- the extending portion 94E of the first rib 94L and the second rib 94R is in the parallel direction of the first rib 94L and the second rib 94R.
- the upper end surface 94EU and the lower end surface 94ED, which are both end faces in the extension direction, are planar.
- the protruding portions 94P of the first rib 94L and the second rib 94R are from a part of the extending portion 94E to the first rib 94L and in a direction different from the extending direction of the extending portion 94E.
- each of the first through hole 51L and the second through hole 51R has a pair of first facing portions facing the upper end surface 94EU and the lower end surface 94ED of the extending portion 94E, and an end surface 94PT of the protruding portion 94P. Includes a second facing portion facing the surface.
- the in-vehicle light source unit LU of the present embodiment the deterioration of the positioning accuracy between the substrate 50 and the heat sink 80 can be suppressed and the optical axis deviation can be suppressed as in the first embodiment.
- the projecting portion 94P of the first rib 94L and the projecting portion 94P of the second rib 94R project toward the side where the first rib 94L and the second rib 94R approach each other. do. Therefore, the deformation of the substrate 50 can be suppressed as compared with the case where the protruding portions 94P of the first rib 94L and the second rib 94R are projected to the sides of the first rib 94L and the second rib 94R away from each other. can.
- the contact area between the end surface of the extending portion 94E and the first facing portion may be the same as the contact area between the end surface 94PT of the protruding portion 94P and the second facing portion, and the former may be larger than the latter. , The former may be smaller than the latter.
- the contact area between the end surface of the extending portion 94E and the first facing portion is the protruding portion 94P. It may be preferable that the contact area is larger than the contact area between the end face 94PT and the second facing portion.
- the extending direction can be considered to be substantially parallel to the vertical direction.
- the rigidity of the upper end surface 94EU of the extending portion 94E to which the force due to the vibration is mainly applied can be made stronger than the rigidity of the end surface 94PT of the protruding portion 94P to which the force due to the vibration in the left-right direction is mainly applied. Therefore, it is possible to more effectively suppress the deformation of the ribs when the vehicle is running.
- the length of the extending portion 94E along the extending direction may be the same as the length of the extending portion 94P along the extending direction, the former may be longer than the latter, and the former may be shorter than the latter. May be good.
- the length of the extending portion 94E along the extending direction is the protrusion of the protruding portion 94P. It may be preferable to have a longer length than the length along the direction of the shaving.
- the ribs are more likely to receive a stronger force in the direction parallel to the vertical direction when the vehicle is running. Therefore, by increasing the length of the extending portion 94E along the extending direction as described above, the rigidity of the extending portion 94E can be increased. Therefore, even when a strong force is applied to the ribs in the vertical direction when the vehicle is running, the deformation of the ribs can be suppressed more effectively.
- each of the pair of fitting portions of the substrate 50 is a through hole
- the fitting portion may be a notch.
- the substrate 50 is formed with a first notch portion 151L cut out from the left end to the right side and a second notch portion 151R cut out from the right end to the left side.
- the first notch portion 151L and the second notch portion 151R have the same shape and dimensions, and are arranged in parallel in the left-right direction.
- the lengths of the first notch portion 151L and the second notch portion 151R in the extending direction of the extending portion 94E are based on the lengths of the extending portions 94E of the first rib 94L and the second rib 94R in the extending direction. Is also slightly longer. Further, the upper end surface 94EU of the extending portion 94E faces the upper edge of the inner wall 52 of the substrate 50 that defines each of the first notch portion 151L and the second notch portion 151R, and faces the inner wall 52 in the left-right direction. There is almost surface contact.
- the lower end surface 94ED of the extending portion 94E faces the lower edge of each inner wall 52 of the first notch portion 151L and the second notch portion 151R.
- the end surface 94PT of the protruding portion 94P of the first rib 94L faces the right end of the inner wall 52 defining the first notch portion 151L and substantially surface-contacts the inner wall 52 along the extending direction of the extending portion 94E. ..
- the end surface 94PT of the protruding portion 94P of the second rib 94R faces the left end of the inner wall 52 defining the second notch portion 151R and substantially surface-contacts with the inner wall 52 along the extending direction of the extending portion 94E. ..
- first rib 94L and the second rib 94R are fitted into the first notch portion 151L and the second notch portion 151R, and the substrate 50 is positioned in the left-right direction and the up-down direction with respect to the heat sink 80.
- FIG. 12 is a diagram showing another modification of the vehicle-mounted light source unit LU from the same viewpoint as in FIG.
- the positions of the first rib 94L and the second rib 94R in the vertical direction are displaced, and the first rib 94L is provided above the second rib 94R. Therefore, the parallel direction of the first rib 94L and the second rib 94R is inclined with respect to the left-right direction. Further, the extending directions of the extending portion 94E of the first rib 94L and the extending portion 94E of the second rib 94R are inclined with respect to the vertical direction, and are different from the parallel direction of the pair of ribs.
- the upper end surface 94EU of the extending portion 94E faces the straight portion on the upper side of the inner wall 52 and is substantially a surface along the straight portion and the left-right direction. Are in contact.
- the lower end surface 94ED of the extending portion 94E faces the straight portion on the lower side of the inner wall 52.
- the protruding portion 94P of the first rib 94L protrudes to the right from the central portion in the extending direction of the extending portion 94E.
- the protruding portion 94P of the second rib 94R protrudes to the left from the central portion in the extending direction of the extending portion 94E.
- the protruding portions 94P of the first rib 94L and the second rib 94R are perpendicular to the height direction of the rib and the first rib in the left-right direction different from the extending direction of the extending portion 94E.
- the 94L and the second rib 94R project toward each other.
- the protruding portions 94P of the first rib 94L and the second rib 94R are perpendicular to the height direction of the rib and are different from the extending direction of the extending portion 94E in the left-right direction and the first rib 94L.
- the second rib 94R may protrude to the side away from each other.
- the end surface 94PT of the protruding portion 94P of the first rib 94L faces the straight portion on the right side of the inner wall 52 defining the first through hole 51L and is substantially a surface along the straight portion and the vertical direction. Are in contact.
- the end surface 94PT of the protruding portion 94P of the second rib 94R faces the straight portion on the left side of the inner wall 52 defining the second through hole 51R and is substantially in surface contact with the straight portion along the vertical direction. Therefore, in this modification, the end face 94PT of the protrusion 94P has an in-plane direction different from the end faces of the extension 94E.
- the vehicle-mounted light source unit LU is arranged on the heat sink 80 as a holding member having the first rib 94L and the second rib 94R, which are a pair of ribs, and the first rib.
- a substrate 50 including the first through hole 51L and the second through hole 51R and on which the light sources 63a and 63b are mounted is provided.
- Each of the first rib 94L and the second rib 94R includes an extending portion 94E and a protruding portion 94P.
- the extending portion 94E of the first rib 94L and the second rib 94R is in the parallel direction of the first rib 94L and the second rib 94R.
- the upper end surface 94EU and the lower end surface 94ED, which are both end faces in the extension direction, are planar.
- the protruding portions 94P of the first rib 94L and the second rib 94R are from a part of the extending portion 94E to the first rib 94L and in a direction different from the extending direction of the extending portion 94E.
- each of the first through hole 51L and the second through hole 51R has a pair of first facing portions facing the upper end surface 94EU and the lower end surface 94ED of the extending portion 94E, and an end surface 94PT of the protruding portion 94P. Includes a second facing portion facing the surface.
- the end surface 94PT of the protrusion 94P in one rib and the second facing portion in one fitting portion to which the rib fits are in contact with each other, or the end surface of the protrusion 94P in the other rib.
- the contact between the 94PT and the second facing portion at the other fitting portion where the rib fits restricts the substrate 50 from moving in the left-right direction with respect to the heat sink 80, and the substrate 50 in the left-right direction is the heat sink 80.
- each of the pair of ribs includes an extending portion 94E extending in a direction different from the height direction and the left-right direction of the rib, and each of the pair of fitting portions is formed on both end faces of the extending portion 94E. It includes a pair of facing first facing portions. Further, the in-plane direction of both end faces of the extending portion 94E is different from the in-plane direction of the end face 94PT of the protruding portion 94P. Therefore, when the substrate 50 tries to move with respect to the heat sink 80 along the direction perpendicular to the left-right direction and the height direction of the rib, one of both end faces of the extending portion 94E and a pair of first fitting portions.
- the substrate 50 is laterally and laterally with respect to the heat sink 80 due to contact with one of the facing portions or contact with the other of both end faces of the extending portion 94E and the other of the pair of first facing portions of the fitting portion. Movement is restricted along a direction perpendicular to both the height directions of the ribs, and the substrate 50 is positioned with respect to the heat sink 80 in both the left-right direction and the direction perpendicular to both the height directions of the ribs.
- both end faces of the extending portion 94E are the first facing portion of the fitting portion
- the end surface 94PT of the protruding portion 94P is the second facing portion of the fitting portion. Face contact.
- the rib has a configuration in which the projecting portion 94P is added to the extending portion 94E, so that the rigidity of the rib can be ensured and the deformation of the rib can be suppressed. It is possible to suppress a decrease in positioning accuracy. Further, in this modification, since both ends of the extending portion 94E come into contact with the fitting portion of the substrate 50, the contact area between the rib and the fitting portion in the extending direction of the extending portion 94E can be reduced. ..
- the vehicle lighting fixture on which the in-vehicle light source unit LU is mounted is the vehicle headlight 1
- the vehicle lamp on which the vehicle-mounted light source unit LU is mounted may be, for example, a lamp mounted on a rear portion of the vehicle or a lamp mounted on a lateral portion.
- the protruding portions 94P of the first rib 94L and the second rib 94R project to the side closer to each other or the side away from each other of the first rib 94L and the second rib 94R in the left-right direction. ..
- the direction is different from the extending direction of the extending portion 94E, the protruding portions 94P of the first rib 94L and the second rib 94R are different from each other in the left-right direction. It may project to the side closer to or away from each other.
- the holding member is the heat sink 80
- the holding member is not limited to the heat sink 80.
- an in-vehicle light source unit capable of accurately positioning a substrate on which a light source is mounted and a holding member holding the substrate and suppressing optical axis deviation can be provided, and is used in fields such as automobiles. It is possible.
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- General Engineering & Computer Science (AREA)
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- Microelectronics & Electronic Packaging (AREA)
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
図1は、本実施形態に係る車載光源ユニットを備える車両用灯具を示す図である。本実施形態では、この車両用灯具は車両用前照灯1として構成される。車両用前照灯は、一般的に車両の前方の左側及び右側のそれぞれに備えられるものであり、これら車両用前照灯は左側及び右側に取り付けられる点を除いて概ね同様の構成を有する。従って、以下、左側及び右側のうち一方側の車両用前照灯についてのみ説明する。
次に、第2実施形態について説明する。第1実施形態と同一又は同等の構成要素については、特に説明する場合を除き、同一の参照符号を付して重複する説明を省略する。
次に、第3実施形態について説明する。第1実施形態と同一又は同等の構成要素については、特に説明する場合を除き、同一の参照符号を付して重複する説明を省略する。
次に、第4実施形態について説明する。第1実施形態と同一又は同等の構成要素については、特に説明する場合を除き、同一の参照符号を付して重複する説明を省略する。
次に、第5実施形態について説明する。第1実施形態と同一又は同等の構成要素については、特に説明する場合を除き、同一の参照符号を付して重複する説明を省略する。
Claims (6)
- 一対のリブを有する保持部材と、
前記保持部材上に配置され、それぞれの前記リブが嵌る一対の嵌合部を含み光源が実装される基板と、
を備え、
それぞれの前記リブの高さ方向に沿って見る場合に、それぞれの前記リブは、
一対の前記リブの並列方向と異なる方向に延在し、両端面が平面状の延在部と、
前記延在部の延在方向と異なる方向において前記延在部の一部から一対の前記リブの互いに近づく側或いは互いに遠ざかる側に突出し、端面が前記延在部の前記両端面と異なる面内方向を有する平面状の突出部と、
を含み、
それぞれの前記嵌合部は、
前記延在部の前記両端面と対向する一対の第1対面部と、
前記突出部の前記端面と対向する第2対面部と、
を含む
ことを特徴とする車載光源ユニット。 - それぞれの前記リブの高さ方向に沿って見る場合に、前記延在方向における前記突出部の前記端面の位置が前記延在部の前記両端面の間である
ことを特徴とする請求項1に車載光源ユニット。 - それぞれの前記リブの高さ方向に沿って見る場合に、前記突出部は、前記延在部の前記延在方向における中央部から前記延在方向に垂直な方向に延在する
ことを特徴とする請求項2に記載の車載光源ユニット。 - それぞれの前記リブの前記突出部は前記延在部の一部から一対の前記リブの互いに近づく側に突出する
ことを特徴とする請求項1から3のいずれか1項に記載の車載光源ユニット。 - それぞれの前記リブの前記突出部が突出する方向は左右方向に平行であり、
前記延在部の前記端面と前記第1対面部との当接面積は、前記突出部の前記端面と前記第2対面部との当接面積よりも大きい
ことを特徴とする請求項1から4のいずれか1項に記載の車載光源ユニット。 - それぞれの前記リブの前記突出部が突出する方向は左右方向に平行であり、
前記延在部の前記延在方向に沿った長さは、前記突出部の突出する方向に沿った長さよりも長い
ことを特徴とする請求項1から5のいずれか1項に記載の車載光源ユニット。
Priority Applications (3)
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US18/267,182 US11940110B2 (en) | 2020-12-15 | 2021-12-10 | Vehicle-mounted light source unit |
CN202180093169.4A CN116829870A (zh) | 2020-12-15 | 2021-12-10 | 车载光源单元 |
JP2022569947A JPWO2022131155A1 (ja) | 2020-12-15 | 2021-12-10 |
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JP (1) | JPWO2022131155A1 (ja) |
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Citations (2)
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JP2016060060A (ja) * | 2014-09-16 | 2016-04-25 | 株式会社沖データ | 半導体装置、画像形成装置、及び画像読取装置 |
WO2019176869A1 (ja) * | 2018-03-15 | 2019-09-19 | 株式会社小糸製作所 | 光源ユニット、及びこれに用いられる搭載部材の製造方法 |
Family Cites Families (3)
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JP5570331B2 (ja) * | 2010-07-12 | 2014-08-13 | 株式会社小糸製作所 | 車両用灯具 |
EP2998643B1 (en) * | 2013-05-17 | 2020-11-04 | Ichikoh Industries, Ltd. | Lamp for vehicles |
US20200182433A1 (en) * | 2018-12-07 | 2020-06-11 | Valeo North America, Inc. | Heatsink apparatus for use with vehicle lamps |
-
2021
- 2021-12-10 CN CN202180093169.4A patent/CN116829870A/zh active Pending
- 2021-12-10 JP JP2022569947A patent/JPWO2022131155A1/ja active Pending
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Patent Citations (2)
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JP2016060060A (ja) * | 2014-09-16 | 2016-04-25 | 株式会社沖データ | 半導体装置、画像形成装置、及び画像読取装置 |
WO2019176869A1 (ja) * | 2018-03-15 | 2019-09-19 | 株式会社小糸製作所 | 光源ユニット、及びこれに用いられる搭載部材の製造方法 |
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US20240044468A1 (en) | 2024-02-08 |
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