Vehicle lamp

Abstract

The vehicle lamp includes: a light source unit; an optical system that irradiates the light from the light source unit toward the front of the vehicle; a lampshade that shields a portion of the light guided by the optical system; and a support member that supports the light source unit, the optical system, and the lampshade, at least one optical member among the light source unit, the lampshade, and the optical system being fixed to the support member by a single screw member, the support member having: a screw hole; and two protruding portions provided at positions that sandwich the threaded hole. The optical member has: a threaded through-hole; the threaded hole and the two protruding parts are arranged side by side in a first direction along a straight line, the diameter of each of the two positioning holes is larger than that of the protruding parts, and the diameter of each of the two positioning holes is larger than that of the protruding parts relative to the position in the first direction on the basis of the threaded through hole. The screw member is disposed at a position shifted by a predetermined offset value in a rotational direction when the screw member is fixed.

Description

Technical Field

[0001] The present invention relates to a vehicle lamp. Background Art

[0002] In vehicle lamps, a method is known in which, when fixing an optical component to a fixing member, a positioning pin on the fixing member is inserted into a positioning hole of the optical component for positioning, and the optical component is fastened to the fixing member with a screw member in this state (for example, see Patent Document 1).

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2016-100231 Summary of the Invention

[0006] Problems to be solved by the invention

[0007] In a structure where a positioning pin is inserted into a positioning hole for positioning, as in Patent Document 1, the diameter of the positioning hole is designed to be larger than the diameter of the positioning pin to prevent interference caused by dimensional variations between components. Consequently, when the optical component is tightened with a screw member from a positioned state, the torque generated by rotating the screw member is transmitted to the optical component, potentially causing positional deviation of the optical component.

[0008] The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a vehicle lamp capable of suppressing positional deviation when an optical component is fixed with a screw member.

[0009] Solutions to Problems

[0010] The vehicle lamp according to the present invention comprises: a light source; an optical system that irradiates light from the light source toward the front of a vehicle; a lampshade that blocks a portion of the light guided by the optical system; and a support member that supports the light source, the optical system, and the lampshade, wherein at least one optical component among the light source, the lampshade, and the optical system is fixed to the support member by a screw member, the support member having: a screw hole into which the screw member is inserted; and two protrusions that are arranged at positions across the screw hole and for positioning the optical component, the optical component having a screw through hole through which the screw member passes and positioning holes that are arranged at positions across the screw through hole and into which the two protrusions are inserted, the screw hole and the two protrusions being arranged side by side in a first direction along a straight line, the two positioning holes being larger than a diameter of the protrusions and being arranged at positions offset by a predetermined offset value relative to a position in the first direction based on the screw through hole in a rotational direction when the screw member is fixed.

[0011] Effects of the Invention

[0012] According to the present invention, it is possible to provide a vehicle lamp capable of suppressing positional deviation when an optical component is fixed with a screw member. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a perspective view showing an example of the vehicle lamp according to the first embodiment.

[0014] Figure 2 It is an exploded perspective view showing an example of the vehicle lamp according to the first embodiment.

[0015] Figure 3 This is a diagram showing an example of a lampshade fixing portion when viewed from the front.

[0016] Figure 4 This is a diagram showing an example of a lampshade when viewed from the front.

[0017] Figure 5 This is a diagram showing a state where the lampshade is fixed to the lampshade fixing portion.

[0018] Figure 6 This is a diagram showing a state where the lampshade is fixed to the lampshade fixing portion.

[0019] Figure 7 It is an exploded perspective view showing an example of a vehicle lamp according to a second embodiment.

[0020] Figure 8 This is a diagram showing an example of a lampshade fixing portion when viewed from the front.

[0021] Figure 9This is a diagram showing an example of a lampshade when viewed from the front.

[0022] Figure 10 This is a diagram showing a state where the lampshade is fixed to the lampshade fixing portion.

[0023] Figure 11 This is a diagram showing a state where the lampshade is fixed to the lampshade fixing portion. DETAILED DESCRIPTION

[0024] The following describes an embodiment of the vehicle lamp of the present invention based on the accompanying drawings. The present invention is not limited to this embodiment. The components of the following embodiment include those that can be easily replaced by those skilled in the art, or are substantially the same.

[0025] In the following description, the front-to-back direction, the up-down direction, and the left-to-right direction each indicate the direction of a vehicle headlamp when installed on a vehicle. The front direction refers to the front direction when the vehicle is moving straight ahead. The rear direction refers to the direction opposite to the front in a horizontal plane. The top direction refers to the direction away from the vehicle's running surface in a direction perpendicular to the horizontal plane. The bottom direction refers to the direction opposite to the top in a direction perpendicular to the horizontal plane. The left direction refers to the left direction when the vehicle is moving straight ahead. The right direction refers to the direction opposite to the left in a horizontal plane. The front direction refers to the front side, and the rear direction refers to the rear side.

[0026] [First embodiment]

[0027] Figure 1 It is a perspective view showing an example of the vehicle lamp 100 according to the first embodiment. Figure 2 1 is an exploded perspective view showing an example of the vehicle lamp 100 according to the first embodiment. Figure 1 as well as Figure 2 As shown, the vehicle lamp 100 includes a light source unit 10, an optical system 20, a lamp housing 30, and a support member 40. The vehicle lamp 100 forms a low-beam pattern in front of the vehicle, for example.

[0028] The light source unit 10 includes a light source 11 and a substrate 12. The light source 11 is, for example, a semiconductor light source such as an LED. The light source 11 is mounted on the substrate 12. The substrate 12 is fixed to the support member 40 by, for example, screws.

[0029] The optical system 20 includes a reflector 21 and a projection lens 22. The reflector 21 reflects light from the light source 11 toward the projection lens 22. The reflector 21 is positioned above the light source 11 and is formed from a heat-resistant, opaque material, such as a resin component. The reflector 21 is secured to the support member 40, for example, by screws. The reflector 21 is hollow, with the front and lower portions open and the rear, upper, and left and right side portions closed. A reflecting surface is formed on the inner surface.

[0030] The projection lens 22 is positioned forward of the reflector 21. The projection lens 22 is mounted to the support member 40, for example, by laser welding. Alternatively, the projection lens 22 may be supported by the support member 40 via a lens holder or the like. The optical axis of the projection lens 22 is aligned or substantially aligned with the optical axis of the reflector 21. The projection lens 22 directs the reflected light from the reflector 21 toward the front of the vehicle.

[0031] The lampshade 30 is formed into a plate-like shape from a member such as a metal plate capable of blocking light from the light source 10. The lampshade 30 includes, for example, a horizontal portion 31a for forming a horizontal cutoff line for a low-beam pattern and an inclined portion 31b for forming an inclined cutoff line. The lampshade 30 is secured to the support member 40, for example, by screws. The lampshade 30 is positioned, for example, between the reflector 21 and the projection lens 22. The lampshade 30 blocks a portion of the light emitted from the light source 11 and reflected by the reflector 21.

[0032] The support member 40 supports the light source 10, the optical system 20, and the lampshade 30. The support member 40 functions as a heat sink, dissipating heat generated by the light source 11 to the outside. The support member 40 can be manufactured, for example, using a mold forming process. At least one optical component 60 among the light source 10, the optical system 20, and the lampshade 30 is secured to the support member 40 via a screw member 50. In this embodiment, the following description uses the lampshade 30 as an example of the optical component 60 secured by the screw member 50.

[0033] The support member 40 includes a shade fixing portion 41 . The shade fixing portion 41 fixes the shade 30 . Figure 3 1 is a diagram showing an example of the lampshade fixing portion 41 when viewed from the front. Figure 3 As shown, the lampshade fixing portion 41 has a threaded hole 42 and protrusions 43 and 44. The threaded hole 42 is for inserting a threaded member 50 for fixing the lampshade 30. The threaded hole 42 has threads corresponding to the threaded member 50 formed therein. The threaded hole 42 extends toward the rear.

[0034] The protrusions 43 and 44 are positioned across the threaded hole 42. The protrusions 43 and 44 extend forward. The threaded hole 42 and the two protrusions 43 and 44 are arranged so as to be aligned in a first direction D1 along a straight line. In this embodiment, the first direction D1 is parallel to the vertical direction. In this case, the protrusion 43 is positioned above the threaded hole 42, and the protrusion 44 is positioned below the threaded hole 42. The distance between the threaded hole 42 and the protrusion 43 is equal to the distance between the threaded hole 42 and the protrusion 44.

[0035] Each of the protrusions 43 and 44 has a circular shape when viewed from the front, for example, a cylindrical shape or a truncated cone shape.

[0036] Figure 4 1 is a diagram showing an example of the lampshade 30 when viewed from the front. Figure 4 As shown, the lampshade 30 has a threaded through hole 32 and two positioning holes 33 and 34 .

[0037] The screw through-hole 32 allows the screw member 50 to pass through when the lamp housing 30 is fixed to the support member 40 .

[0038] The two positioning holes 33 and 34 are arranged at positions across the threaded through hole 32. In the present embodiment, the threaded through hole 32 and the two positioning holes 33 and 34 are arranged along a straight line perpendicular to the horizontal portion 31a when viewed from the front. The positioning hole 33 is, for example, an oblong shape when viewed from the front, for the above-mentioned protrusion 43 to be inserted into. The positioning hole 34 is, for example, an oblong shape when viewed from the front, for the above-mentioned protrusion 44 to be inserted into. The shapes of the positioning holes 33 and 34 when viewed from the front may also be different. By inserting the protrusions 43 and 44 into the positioning holes 33 and 34, positioning is performed between the lampshade 30 and the lampshade fixing portion 41 of the support component 40. In addition, by inserting the protrusions 43 and 44 into the positioning holes 33 and 34, the threaded through hole 32 is arranged at a position corresponding to the threaded hole 42. In this state, the threaded component 50 can pass through the threaded through hole 32 and be inserted into the threaded hole 42.

[0039] When the screw member 50 is inserted into the screw hole 42, as described later, Figure 6 As shown in FIG. 4 , the screw member 50 is rotated in the clockwise direction with respect to the screw hole 42 in a front view.

[0040] In the second direction (left-right direction) D2, which is perpendicular to the first direction D1 when viewed from the front, the dimensions of the positioning holes 33 and 34 are larger than the dimensions of the protrusions 43 and 44. Therefore, when the protrusions 43 and 44 are inserted, interference with the inner peripheries of the positioning holes 33 and 34 is avoided. In the second direction D2, the difference S1 between the dimension W2 of the positioning hole 33 and the dimension W1 of the protrusion 43 provides the clearance for the protrusion 43 to be inserted into the positioning hole 33. Furthermore, in the second direction D2, the difference S2 between the dimension W4 of the positioning hole 34 and the dimension W3 of the protrusion 44 provides the clearance for the protrusion 44 to be inserted into the positioning hole 34.

[0041] Positioning hole 33 is positioned at an upper position in the first direction D1 relative to threaded through-hole 32, offset in the second direction D2 along the rotational direction R when secured with screw member 50 by an offset value T1 (S1 / 2), which is the difference S1 between the dimension W1 of protrusion 43 and the dimension W2 of positioning hole 33 divided by two. In other words, positioning hole 33 is positioned to the left by the offset value T1 relative to the upper position in the first direction D1 relative to threaded through-hole 32. Positioning hole 34 is positioned at a lower position in the first direction D1 relative to threaded through-hole 32, offset in the second direction D2 along the rotational direction R when secured with screw member 50 by an offset value T2 (S2 / 2), which is the difference S2 between the dimension W3 of protrusion 44 and the dimension W4 of positioning hole 34 divided by two. In other words, positioning hole 34 is positioned to the right by the offset value T2 relative to the lower position in the first direction D1 relative to threaded through-hole 32.

[0042] Thus, each positioning hole 33, 34 is arranged at a position offset in the rotational direction R from its position in the first direction D1 relative to the threaded through-hole 32 by an offset value T1, T2 (S1 / 2, S2 / 2) obtained by dividing the difference S1, S2 between the dimensions W1, W3 of the protrusions 43, 44 and the dimensions W2, W4 of the positioning holes 33, 34 by two. In this embodiment, the positioning holes 33, 34 are arranged at a position offset in the second direction D2 along the rotational direction R.

[0043] Next, an example of a method for fixing the shade 30 to the shade fixing portion 41 of the support member 40 when manufacturing the vehicle lamp 100 configured as described above will be described. Figure 5 and Figure 6 3 is a diagram showing a state where the lampshade 30 is fixed to the lampshade fixing portion 41. Figure 5 As shown, the protrusion 43 is inserted into the positioning hole 33, and the protrusion 44 is inserted into the positioning hole 34. By inserting the protrusions 43 and 44 into the positioning holes 33 and 34, the lampshade 30 is positioned between the lampshade fixing portion 41 of the support member 40. Furthermore, by inserting the protrusions 43 and 44 into the positioning holes 33 and 34, the screw through-hole 32 is positioned corresponding to the screw hole 42. Therefore, the screw member 50 can be inserted into the screw hole 42 through the screw through-hole 32.

[0044] After the lampshade 30 is positioned, Figure 6 As shown, the screw member 50 is inserted into the screw hole 42 to fix the lampshade 30 to the lampshade fixing portion 41. When the screw member 50 is inserted, as shown in FIG. Figure 6 As shown, the screw member 50 is rotated in the clockwise direction, that is, the rotation direction R, with respect to the screw hole 42 when viewed from the front.

[0045] If the lampshade 30 is fixed to the lampshade fixing portion 41 while the screw component 50 is rotated, the torque of the screw component 50 is transmitted to the lampshade 30, and the lampshade 30 rotates in the rotation direction R. If the lampshade 30 rotates, it changes from a positioned state to a state inclined in the rotation direction R. The lampshade 30 is restricted from rotating by the inner circumferences of the positioning holes 33 and 34 abutting against the protrusions 43 and 44, respectively. Specifically, the right inner circumference 33a of the positioning hole 33 abuts against the protrusion 43, and the left inner circumference 34a of the positioning hole 34 abuts against the protrusion 44. Therefore, the lampshade 30 is fixed to the lampshade fixing portion 41 in a state in which the inner circumferences of the positioning holes 33 and 34 abut against the protrusions 43 and 44.

[0046] In this embodiment, each positioning hole 33, 34 is offset in the rotational direction R relative to its position in the first direction D1 relative to the threaded through-hole 32 by offset values ​​T1, T2 (S1 / 2, S2 / 2), which are the differences S1, S2 between the dimensions W1, W3 of the protrusions 43, 44 and the dimensions W2, W4 of the positioning holes 33, 34, divided by two. Therefore, when the inner circumferential surfaces of the positioning holes 33, 34 abut the protrusions 43, 44, the lampshade 30 is secured in the proper position, i.e., with the horizontal portion 31a parallel to the horizontal direction. By setting the offset of the positioning holes 33, 34 in the rotational direction R to secure the lampshade 30 in the proper position, unintended positional displacement of the lampshade 30 caused by rotation of the screw member 50 can be suppressed.

[0047] As described above, the vehicle lamp of this embodiment includes: a light source unit 10; an optical system 20 that irradiates light from the light source unit 10 toward the front of the vehicle; a lampshade 30 that blocks a portion of the light guided by the optical system 20; and a support member 40 that supports the light source unit 10, the optical system 20, and the lampshade 30. At least one optical component 60 among the light source unit 10, the lampshade 30, and the optical system 20 is secured to the support member 40 via a screw member 50. The support member 40 includes a screw hole 42 for inserting the screw member 50, and two protrusions 43 and 44 that are positioned across the screw hole 42 and that position the optical component 60. The optical component 60 includes a screw through-hole 32 for inserting the screw member 50, and positioning holes 33 and 34 that are positioned across the screw through-hole 32 and into which the two protrusions 43 and 44 are inserted. The threaded hole 42 and the two protrusions 43 and 44 are arranged in a first direction D1 along a straight line. The two positioning holes 33 and 34 are larger in diameter than the protrusions 43 and 44, respectively, and are arranged at positions offset by a predetermined offset value along the rotation direction when fixing the threaded component 50 relative to the position in the first direction D1 based on the threaded through hole 32.

[0048] With this configuration, each positioning hole 33, 34 is positioned offset along the rotational direction R relative to its position in the first direction D1 relative to the threaded through-hole 32 by offset values ​​T1, T2 (S1 / 2, S2 / 2), which are the differences S1, S2 between the dimensions W1, W3 of the protrusions 43, 44 and the dimensions W2, W4 of the positioning holes 33, 34, divided by two. Therefore, when the optical component 60 is secured to the support member 40 while rotating a single screw member 50 in the rotational direction R, the optical component 60 is secured in place while the inner circumferential surfaces of the positioning holes 33, 34 abut against the protrusions 43, 44, restricting rotation. This prevents positional deviation when securing the optical component 60 using the screw member 50.

[0049] In the vehicle lamp 100 of this embodiment, the offset value is the value obtained by dividing the difference between the dimensions of the protrusions 43 and 44 in the second direction D2 orthogonal to the first direction D1 and the dimensions of the positioning holes 33 and 34 by 2. This configuration improves the positional accuracy of the optical component 60 secured by the screw member 50.

[0050] In the vehicle lamp 100 of this embodiment, the positioning holes 33 and 34 are arranged at positions offset in the second direction D2 relative to the positions in the first direction D1 with respect to the screw through hole 32. This configuration improves the positional accuracy of the optical component 60 fixed by the screw member 50.

[0051] In the vehicle lamp 100 of this embodiment, the threaded hole 42 and the two protrusions 43 and 44 are aligned in the vertical direction when mounted on the vehicle. Thus, in the vehicle lamp 100 having a structure in which the threaded hole 42 and the two protrusions 43 and 44 are aligned in the vertical direction when mounted on the vehicle, the lamp cover 30 can be fixed to the support member 40 with high precision by rotating a single screw member 50.

[0052] In the vehicle lamp 100 of this embodiment, the two positioning holes 33 and 34 are in the shape of long holes extending in the vertical direction. The lampshade 30 forms the light-dark cutoff line of the low-beam pattern through the horizontal portion 31a and the inclined portion 31b at the upper end edge, so the vertical position of the upper end edge becomes important. That is, if the lampshade 30 is offset from the appropriate position in the vertical direction, it will, for example, allow unnecessary light to pass through, or block necessary light. In this embodiment, since the two positioning holes 33 and 34 of the lampshade 30 are in the shape of long holes extending in the vertical direction, after the lampshade 30 is arranged in the lampshade fixing portion 41, the position can be adjusted in the vertical direction along the positioning holes 33 and 34. By aligning the lampshade 30 in the vertical direction and fixing it with the screw component 50, the vertical position and posture of the horizontal portion 31a and the inclined portion 31b of the lampshade 30 can be adjusted to an appropriate state.

[0053] In the vehicle lamp 100 of this embodiment, the optical component 60 is the lampshade 30. This structure secures the lampshade 30 in its original position, with the horizontal portion 31a parallel to the horizontal direction. Therefore, by rotating the single screw member 50, the lampshade 30 can be precisely secured to the support member 40. This prevents positional deviation when the lampshade 30, serving as the optical component, is secured using the screw member 50.

[0054] [Second embodiment]

[0055] Figure 7 It is an exploded perspective view showing an example of a vehicle lamp 200 according to the second embodiment. Figure 2 The illustrated vehicle lamp 200 includes a light source 110, an optical system 120, a lampshade 130, and a support member 140. Similar to the vehicle lamp 100, the vehicle lamp 200 forms a low-beam pattern in front of the vehicle, for example. The light source 110 and the optical system 120 have the same structure as the vehicle lamp 100.

[0056] The support member 140 includes a lampshade fixing portion 141 . The lampshade fixing portion 141 is provided at the front portion of the support member 140 and fixes the lampshade 130 . Figure 8 14 is a diagram showing an example of the lampshade fixing portion 141 when viewed from the front. Figure 8 As shown, the lampshade fixing portion 141 has a threaded hole 142 and protrusions 143 and 144. The threaded hole 142 extends toward the rear, and the protrusions 143 and 144 extend toward the front.

[0057] In this embodiment, the threaded hole 142 and the two protrusions 143 and 144 are arranged so as to be aligned along a first direction D3 that is linear. In this embodiment, the first direction D3 is parallel to the left-right direction. That is, the protrusion 143 is arranged to the left of the threaded hole 142, and the protrusion 144 is arranged to the right of the threaded hole 142. The distances between the threaded hole 142 and the protrusion 143, and the distances between the threaded hole 142 and the protrusion 144, are equal.

[0058] Figure 9 1 is a diagram showing an example of the lampshade 130 when viewed from the front. Figure 9 As shown, the lampshade 130 is the same as the first embodiment, for example, having a horizontal portion 131a for forming a horizontal cutoff line of a low beam pattern and an inclined portion 131b for forming an inclined cutoff line. In addition, the lampshade 130 has a threaded through hole 132 and two positioning holes 133, 134.

[0059] The screw member 50 passes through the screw through hole 132 when the lamp housing 130 is fixed to the support member 140 .

[0060] The two positioning holes 133 and 134 are positioned across the threaded through-hole 132. In this embodiment, the threaded through-hole 132 and the two positioning holes 133 and 134 are arranged along a straight line parallel to the horizontal portion 131a when viewed from the front. The positioning hole 133 may be, for example, circular in front view, for insertion of the aforementioned protrusion 143. The positioning hole 134 may be, for example, oblong in front view, for insertion of the aforementioned protrusion 144. The shapes of the positioning holes 133 and 134 when viewed from the front may also be the same.

[0061] As in the first embodiment, the lampshade 130 is positioned relative to the lampshade fixing portion 141 of the support member 140 by inserting the protrusions 143 and 144 into the positioning holes 133 and 134. Furthermore, by inserting the protrusions 143 and 144 into the positioning holes 133 and 134, the threaded through-hole 132 is positioned corresponding to the threaded hole 142. In this state, the screw member 50 can be inserted through the threaded through-hole 132 and into the threaded hole 142. Once the screw member 50 is inserted into the threaded hole 142, the screw member 50 is rotated in the rotation direction R.

[0062] In a second direction (vertical direction) D4 perpendicular to first direction D3 when viewed from the front, dimension W6 of positioning hole 133 is larger than dimension W5 of protrusion 143. A difference S3 between dimension W6 of positioning hole 133 and dimension W5 of protrusion 143 represents the allowance for protrusion 143 to be inserted into positioning hole 133. Dimension W8 of positioning hole 134 is larger than dimension W7 of protrusion 144. A difference S4 between dimension W8 of positioning hole 134 and dimension W7 of protrusion 144 represents the allowance for protrusion 144 to be inserted into positioning hole 134.

[0063] Positioning hole 133 is positioned at a position offset in the second direction D4 along the rotational direction R during fastening by the screw member 50, relative to a position to the left in the first direction D3 relative to the threaded through-hole 132, by an offset value T3 (S3 / 2) obtained by dividing the difference S3 between the dimension W5 of the protrusion 143 and the dimension W6 of the positioning hole 133 by two. In other words, positioning hole 133 is positioned downwardly offset by the offset value T3 relative to a position to the left in the first direction D3 relative to the threaded through-hole 132. Furthermore, positioning hole 134 is positioned at a position offset in the second direction D4 along the rotational direction R during fastening by the screw member 50, relative to a position to the right in the first direction D3 relative to the threaded through-hole 132, by an offset value T4 (S4 / 2) obtained by dividing the difference S4 between the dimension W7 of the protrusion 144 and the dimension W8 of the positioning hole 134 by two. That is, the positioning hole 134 is arranged at a position shifted upward by the offset value T4 with respect to a position to the right in the first direction D3 with respect to the screw through hole 132 .

[0064] Thus, each positioning hole 133, 134 is arranged at a position offset in the rotational direction R from its position in the first direction D3 with respect to the threaded through-hole 132 by offset values ​​T3, T4 (S3 / 2, S4 / 2), which are obtained by dividing the difference S3, S4 between the dimensions W5, W7 of the protrusions 143, 144 and the dimensions W6, W8 of the positioning holes 133, 134 by 2. In this embodiment, the positioning holes 133, 134 are arranged at positions offset in the second direction D2 along the rotational direction R.

[0065] Figure 10 as well as Figure 11 1 is a diagram showing a state where the lampshade 130 of the second embodiment is fixed to the lampshade fixing portion 141. Figure 10 As shown, protrusion 143 is inserted into positioning hole 133, and protrusion 144 is inserted into positioning hole 134. Inserting protrusions 143, 144 into positioning holes 133, 134 allows positioning between lampshade 130 and lampshade fixing portion 141 of support member 140. Furthermore, inserting protrusions 143, 144 into positioning holes 133, 134 positions threaded through-hole 132 at a position corresponding to threaded hole 142. Consequently, threaded member 50 can be inserted through threaded through-hole 132 and into threaded hole 142.

[0066] After the lampshade 130 is positioned, Figure 11 As shown, the screw member 50 is inserted into the screw hole 142 to fix the lampshade 130 to the lampshade fixing portion 141. When the screw member 50 is inserted, as shown in FIG. Figure 11 As shown, the screw member 50 is rotated in the rotation direction R.

[0067] If the lampshade 130 is fixed to the lampshade fixing portion 141 while the screw component 50 is rotated, the torque of the screw component 50 is transmitted to the lampshade 130, and the lampshade 130 rotates in the rotation direction R. If the lampshade 130 rotates, it changes from a positioned state to a state inclined in the rotation direction R. The lampshade 130 is restricted from rotating by the inner circumferences of the positioning holes 133 and 134 abutting against the protrusions 143 and 144, respectively. Specifically, the upper inner circumference 133a of the positioning hole 133 abuts against the protrusion 143, and the lower inner circumference 134a of the positioning hole 134 abuts against the protrusion 144. Therefore, the lampshade 130 is fixed to the lampshade fixing portion 141 in a state in which the inner circumferences of the positioning holes 133 and 134 abut against the protrusions 143 and 144.

[0068] In this embodiment, each positioning hole 133, 134 is positioned relative to its position in the first direction D3 with respect to the threaded through-hole 132, offset in the rotational direction R by offset values ​​T3, T4 (S3 / 2, S4 / 2), which are obtained by dividing the difference S3, S4 between the dimensions W5, W7 of the protrusions 143, 144 and the dimensions W6, W8 of the positioning holes 133, 134 by two. Therefore, when the inner circumferential surfaces of the positioning holes 133, 134 abut against the protrusions 143, 144, the lampshade 130 is fixed in the proper position, i.e., in a position where the horizontal portion 131a is parallel to the horizontal direction.

[0069] In this way, even if the threaded through hole 132 and the positioning holes 133, 134, the threaded hole 142 and the protrusions 143, 144 are respectively arranged in a straight line in the left and right directions, by setting the offset amount of the positioning holes 133, 134 in the rotation direction R in a manner that fixes the lampshade 130 in an appropriate position, it is possible to suppress the undesirable position offset of the lampshade 130 caused by the rotation of the threaded component 50.

[0070] In the vehicle lamp 200 of this embodiment, the threaded hole 142 and the two protrusions 143 and 144 are aligned in the left-right direction when mounted on the vehicle. Thus, in the vehicle lamp 200 having a structure in which the threaded hole 142 and the two protrusions 143 and 144 are aligned in the left-right direction when mounted on the vehicle, the lamp cover 130 can be fixed to the support member 140 with high precision by rotating a single screw member 50.

[0071] In the vehicle lamp 200 of this embodiment, one of the two positioning holes 133, 134 is an elongated hole extending in the left-right direction. This structure ensures a larger margin between the two positioning holes 133, 134 and the two protrusions 143, 144, thereby allowing fine adjustment of the position between the lampshade 130 and the support member 140 in the left-right direction.

[0072] The technical scope of the present invention is not limited to the above-described embodiment and can be modified as appropriate without departing from the spirit of the present invention. For example, in the above-described embodiment, the lampshade 30 is used as an example of the optical component 60, but the present invention is not limited to this structure. The optical component 60 can also be used in situations where a single screw member is used to secure part or all of the light source unit 10 or the optical system 20 in addition to or instead of the lampshade 30.

[0073] Explanation of symbols

[0074] R—rotation direction, 10, 110—light source portion, 11—light source, 12—substrate, 20, 120—optical system, 21—reflector, 22—projection lens, 30, 130—lampshade, 31a, 131a—horizontal portion, 31b—inclined portion, 32, 132—threaded through-hole, 33, 34, 133, 134—positioning hole, 40, 140—support component, 41, 141—lampshade fixing portion, 42, 142—threaded hole, 43, 44, 143, 144—protrusion, 50—threaded component, 60—optical component, 100, 200—vehicle lamp.

Claims

1. A vehicle lamp, characterized in that: have: Light source department; an optical system for irradiating light from the light source portion toward the front of the vehicle; a lampshade that shields a portion of the light guided by the optical system; as well as a supporting member that supports the light source, the optical system, and the lampshade, The light source, the lampshade and at least one optical component in the optical system are fixed to the supporting component via a threaded component. The support member includes: a threaded hole into which the threaded member is inserted; and two protrusions disposed across the threaded hole and configured to position the optical member. The optical component includes: a screw through hole through which the screw member passes; and a positioning hole arranged at a position across the screw through hole and into which the two protrusions are inserted. The threaded hole and the two protrusions are arranged in a first direction along a straight line, The two positioning holes are larger than the diameter of the protrusion and are arranged at positions offset by a predetermined offset value in the rotation direction when the screw member is fixed relative to the position in the first direction based on the screw through hole.

2. The vehicle lamp according to claim 1, wherein: The offset value is a value obtained by dividing a difference between a size of the protrusion and a size of the positioning hole in a second direction perpendicular to the first direction by two.

3. The vehicle lamp according to claim 2, wherein: Each of the positioning holes is arranged at a position shifted in the second direction relative to a position in the first direction with reference to the screw through hole.

4. The vehicle lamp according to claim 1, wherein: The screw hole and the two protrusions are aligned in the vertical direction in a vehicle-mounted state.

5. The vehicle lamp according to claim 4, characterized in that: The two positioning holes are in the shape of long holes extending in the up-down direction.

6. The vehicle lamp according to claim 1, wherein: The threaded hole and the two protrusions are aligned in the left-right direction in a vehicle-mounted state.

7. The vehicle lamp according to claim 6, wherein: One of the two positioning holes is in the shape of an elongated hole extending in the left-right direction.

8. The vehicle lamp according to claim 1, wherein: The optical component is the lampshade.

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