Vehicle lamp

Abstract

A vehicle lamp (1) is provided with: a container-shaped lamp body (2) provided with a front surface opening (2 '); and a front surface cover (4) which is assembled on the front surface opening (2 ') of the lamp body (2) and defines a lamp chamber (S) on the inner side, a cylindrical body (7) protruding from at least a part of an outer peripheral side surface extending in the axial direction of the cylindrical body (7) is provided on a configuration surface (69) configuring the lamp body (2), and the cylindrical body (7) is provided with an opening (69) extending in the axial direction of the outer peripheral side surface of the cylindrical body (7). The configuration surface (69) extends so as to bend toward the base end side or the tip end side of the cylindrical body (7), and the configuration surface (69) is integrated with the cylindrical body (7). By increasing the curved surface, the rigidity can be improved and the thickness can be reduced.

Description

Technical Field

[0001] The present invention relates to a vehicle lamp having a lamp body provided with a cylindrical boss.

[0002] In addition, the present invention relates to a vehicle lamp having a bracket on the lamp body that is thin-walled, lightweight, and has sufficient strength.

[0003] In addition, the present invention relates to a structure of a lamp body in which ventilation holes are formed in the lamp body main body. Background Art

[0004] On the lamp body, as a mounting portion for other components, a boss of a cylindrical body is provided (for example, Patent Document 1).

[0005] In addition, in recent years, from the viewpoint of carbon neutrality, with the demand for lightweighting of vehicle lamps, lightweighting of various parts of the lamp body on which components are mounted is required. On the other hand, in recent vehicle lamps, from the viewpoints of improving safety and the like, the number of components such as sensors provided on the lamp body has increased, and in particular, strengthening of the rigidity of the bracket as a mounting portion for mounting to the vehicle body is required.

[0006] In FIGS. 4 and 5 of Patent Document 2, a lamp body having a vehicle body mounting portion (bracket) whose rigidity is strengthened by adding ribs is disclosed.

[0007] Strengthening of the rigidity of the bracket is considered by adding ribs to the bracket and thickening the mounting portion on the lamp body side where the base end portion of the bracket is mounted.

[0008] In addition, ventilation holes (breathing holes) are provided in the lamp body, and the ventilation holes communicate the inside and outside of the lamp chamber partitioned by the lamp body and the front surface cover (for example, Patent Document 3).

[0009] Prior Art Documents

[0010] Patent Documents

[0011] Patent Document 1: Japanese Patent Application Laid-Open No. 2005-127721

[0012] Patent Document 2: Japanese Patent Application Laid-Open No. 2010-123292

[0013] Patent Document 3: Japanese Patent Application Laid-Open No. 2002-124108 Summary of the Invention

[0014] Technical Problem to be Solved by the Invention

[0015] However, in recent years, from the concept of carbon neutrality, a lamp body that can achieve thin-walling and lightweighting while ensuring rigidity is desired.

[0016] The present invention is proposed in view of this, and its object is to provide a vehicle lamp having a lamp body provided with a cylindrical boss, capable of achieving weight reduction and improvement in rigidity.

[0017] In addition, adding ribs to each body mounting portion (bracket) increases the rigidity of the bracket, but is contrary to the requirement of weight reduction in that it increases the self-weight of the lamp body. In addition, simply thinning the wall of the bracket promotes weight reduction, but is not preferable in terms of reducing the strength of the bracket.

[0018] On the other hand, in order to avoid stress concentration, the connecting portion between the base end portion of the bracket and the lamp body is not provided as a buckling portion, and should be connected via a bending portion as large as possible. However, when the bracket mounting portion on the lamp body side is thick-walled, if the bending portion is too large, the strength of the connecting portion is reduced due to the deterioration of the heat shrink mark accompanying the increase in the cross-sectional area. Therefore, there is a problem that it is difficult to avoid stress concentration without increasing the bending portion.

[0019] In view of the above problems, the object of the present invention is to provide a vehicle lamp that achieves weight reduction and improvement in rigidity by providing a bracket on the lamp body that is less likely to generate stress concentration at the connecting portion between the lamp body and the bracket and has sufficient strength even if it is thin-walled and lightweight.

[0020] In addition, in view of the above problems, the object of the present invention is to provide a vehicle lamp having a lamp body provided with a vent hole, capable of achieving weight reduction and improvement in rigidity.

[0021] Technical solutions for solving technical problems

[0022] In order to achieve one of the above objects, a vehicle lamp according to one aspect of the present disclosure includes: a container-shaped lamp body having a front surface opening; a front surface cover assembled to the front surface opening of the lamp body, partitioning a lamp chamber inside, and a cylindrical body protruding from a constituent surface constituting the lamp body, the constituent surface protruding from at least a part of the outer peripheral side surface of the cylindrical body and extending bent toward the base end side or the top end side of the cylindrical body.

[0023] With the above structure, the bent constituent surface functions as a reinforcing rib of the cylindrical body, so that there is no need to provide ribs for ensuring the rigidity of the constituent surface and the cylindrical body. Therefore, weight reduction and improvement in rigidity can be achieved.

[0024] In addition, to achieve one of the above objects, a vehicle lamp according to one aspect of the present disclosure includes: a lamp body having a front surface opening; a front surface lens mounted on the front surface opening of the lamp body to form a lamp chamber inside the lamp body; a bracket provided on the lamp body as a mounting portion for mounting to a vehicle body, the bracket having: a main body portion connected to the lamp body; a mounting portion engaged with the vehicle body, a base end portion of the main body portion being formed as a Y-shaped base end portion and integrally formed with a curved surface portion of the lamp body, the Y-shaped base end portion having a Y-shaped vertical cross section.

[0025] According to the above structure, at the base end portion of the main body portion of the bracket having a Y-shaped vertical cross section, a large bending portion can be formed between the connecting portions with the lamp body by thinning the wall thickness of the mounting portion on the lamp body side. Therefore, stress concentration can be alleviated. In addition, the bracket has a curved shape imitating the lamp body, and thus has high rigidity.

[0026] In addition, to achieve one of the above objects, a vehicle lamp according to one aspect of the present disclosure includes: a lamp body having a front end opening; a front surface cover mounted on the front end opening of the lamp body to form a lamp chamber inside the lamp body; a bracket provided on the lamp body as a mounting portion for mounting to a vehicle body, the bracket having: a main body portion connected to the lamp body; a mounting portion engaged with the vehicle body, the main body portion being constituted by a semi-cylindrical portion having a cross-sectional semi-cylindrical shape including at least a part of a curved portion, and a base end portion of the semi-cylindrical portion being integrally formed with a curved surface of the lamp body.

[0027] As described above, by forming the main body portion of the bracket, which is an integrated part with the lamp body, with a semi-cylindrical portion, the bracket has a larger cross-sectional moment of inertia and higher rigidity against bending compared to a main body portion formed in a flat plate shape.

[0028] In addition, to achieve one of the above objects, a vehicle lamp according to one aspect of the present disclosure includes: a container-shaped lamp body having a front surface opening; a front surface cover assembled to the front surface opening of the lamp body to define a lamp chamber inside, a ventilation hole and a cylindrical wall being formed on a back wall of the lamp body, the ventilation hole forming an air passage for communicating the inside and outside of the lamp chamber, the cylindrical wall extending rearward of the lamp body so as to surround the ventilation hole, a waterproof wall being formed on the back wall, the waterproof wall being separated from the cylindrical wall and surrounding the cylindrical wall and extending rearward of the lamp body, at least a part of a curved surface of the waterproof wall protruding from a side surface in the middle of the extension toward the back surface, the curved surface folding back and extending toward a base end portion side of the waterproof wall to constitute a part of the back wall.

[0029] By being configured as described above, the back wall around the ventilation hole can be formed by a curved surface. In addition, compared with a flat surface, forming the lamp body by a curved surface can increase the bending moment and improve the rigidity, thereby enabling the lamp body to be made thinner. And according to the above structure, at least the rigidity of the back wall around the ventilation hole can be improved, and even if the wall thickness of the back wall around the ventilation hole is set to be thin, the same level of rigidity as before can be ensured.

[0030] Advantages of the Invention

[0031] According to the present invention, a lamp body provided with a cylindrical boss is provided, and weight reduction and improvement of rigidity can be achieved.

[0032] In addition, according to the present invention, by configuring the main body portion of the bracket in a manner having a Y-shaped vertical cross-section, the mounting portion at the base end of the bracket on the lamp body side can be made thinner, and can be integrally formed in a state where a relatively large bending portion is formed at the connecting portion between the base end of the lamp body and the lamp body side, thereby reducing stress concentration at the connecting portion. In addition, even if no reinforcing rib is provided on the bracket, high rigidity against bending can be obtained. Therefore, weight reduction of the lamp body and the vehicle lamp can be achieved by weight reduction and rigidity improvement of the bracket.

[0033] In addition, according to the present invention, by forming the main body portion of the bracket by a semi-cylindrical portion, the main body portion has high rigidity against bending stress. Therefore, even if the main body portion is made thinner, high rigidity against bending can be obtained, and even if no reinforcing rib is provided, sufficient rigidity against bending can be obtained for the bracket. Therefore, further weight reduction of the vehicle lamp can be achieved via the lamp body.

[0034] In addition, according to the present invention, a lamp body provided with a ventilation hole is provided, and weight reduction and improvement of rigidity can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a front view showing a schematic structure of a vehicle lamp according to a first embodiment of the present disclosure.

[0036] Figure 2A is Figure 1 a front view of the mounting portion provided on the lamp body at the F portion shown.

[0037] Figure 2B is Figure 1 a front perspective view of the mounting portion provided on the lamp body at the F portion shown.

[0038] Figure 3A is Figure 1 a rear view of the mounting portion provided on the lamp body at the F portion shown.

[0039] Figure 3B is Figure 1 a rear perspective view of the mounting portion provided on the lamp body at the F portion shown.

[0040] Figure 4A is Figure 1 The front view of the mounting portion provided on the lamp body of section F shown in the figure.

[0041] Figure 4B is along Figure 4A The horizontal end view along line G-G.

[0042] Figure 4C is along Figure 4A The vertical end view along line H-H.

[0043] Figure 5A is Figure 1 The front view of the mounting portion provided on the lamp body of section F shown in the figure.

[0044] Figure 5B is Figure 4A The developed view of the outer peripheral side surface of the boss shown in the figure.

[0045] Figure 5C is along Figure 5A The horizontal end view along line J-J.

[0046] Figure 6A represents Figure 1 The front view of the modified example of the mounting portion shown in the figure.

[0047] Figure 6B is Figure 6A The rear perspective view of the mounting portion shown in the figure.

[0048] Figure 6C is Figure 6A The side perspective view of the mounting portion shown in the figure.

[0049] Figure 7 The front view of the vehicle lamp according to the second and third embodiments of the present disclosure.

[0050] Figure 8A The front view of the bracket of the vehicle lamp according to the second embodiment.

[0051] Figure 8B The rear view of the bracket of the vehicle lamp according to the second embodiment.

[0052] Figure 9A The perspective view of the bracket according to the second embodiment as viewed from the upper right front.

[0053] Figure 9B The perspective view of the bracket according to the second embodiment as viewed from the lower left front.

[0054] Figure 10A The top view of the bracket according to the second embodiment.

[0055] Figure 10B Yes Figure 10A The bracket shown is an end view of a vertical cut at the position of the cutting line II.

[0056] Figure 10C It is assumed that a conventional stent having a base end portion is placed in the Figure 10A The end view is a vertical cross-sectional view of the same position along the cutting line II shown.

[0057] Figure 11A Yes Figure 10A The bracket shown is an end view of a vertical cut at the cutting line II-II.

[0058] Figure 11B Yes Figure 10A The bracket shown is an end view of a vertical cut at the cutting line III-III.

[0059] Figure 12 This is a perspective view of a bracket of a vehicle lamp according to a third embodiment, as seen from obliquely right front.

[0060] Figure 13 Observed from the right rear Figure 12 A perspective view of the bracket is shown.

[0061] Figure 14A yes Figure 12 Rear view of the bracket shown.

[0062] Figure 14B Yes Figure 14A The main body of the bracket shown is an end view of a horizontal cut at the position of the cutting line II.

[0063] Figure 15A yes Figure 12 A top view of the bracket is shown.

[0064] Figure 15B Yes Figure 12 The main body of the bracket shown is an end view of a vertical cut at the position of the cutting line II-II.

[0065] Figure 15C Yes Figure 12 The main body of the bracket shown is an end view of a vertical cut at the position of the cutting line III-III.

[0066] Figure 16A Yes means Figure 12 A perspective view of a modified example of the bracket shown.

[0067] Figure 16B Yes Figure 16A The end view of the bracket body portion shown is a horizontal cut.

[0068] Figure 17 is a front view showing a schematic structure of a vehicle lamp according to a fourth embodiment.

[0069] Figure 18 is Figure 17 a front view of the lamp body shown.

[0070] Figure 19 is Figure 18 a perspective view of the lamp body shown.

[0071] Figure 20A is a sectional view obtained by vertically cutting the lamp body shown Figure 18 at the position of cutting line A - A.

[0072] Figure 20B is a sectional view obtained by vertically cutting the lamp body shown Figure 18 at the position of cutting line B - B.

[0073] Figure 20C is a sectional view obtained by vertically cutting the lamp body shown Figure 18 at the position of cutting line C - C.

[0074] Figure 20D is a sectional view obtained by vertically cutting the lamp body shown Figure 18 at the position of cutting line D - D.

[0075] Figure 20E is a sectional view obtained by vertically cutting the lamp body shown Figure 18 at the position of cutting line E - E.

[0076] Figure 21 is an explanatory view Figure 18 showing a beam - based truss structure of the vehicle lamp shown.

[0077] Figure 22A is a vertical sectional view of a lamp body having an existing structure for comparison.

[0078] Figure 22B is Figure 18 a vertical sectional view of the lamp body shown.

[0079] Figure 23A is Figure 18 a rear view of part F.

[0080] Figure 23B is a horizontal sectional view along Figure 23A line G - G.

[0081] Figure 23C is a vertical sectional view along Figure 23A line H - H.

[0082] Figure 23DYes Figure 18 Top view of part F of

[0083] Figure 24 Yes Figure 18 Rear perspective view of part F of

[0084] Figure 25A Vertical end view of the lamp body for comparison

[0085] Figure 25B Yes Figure 23C Vertical end view of the corresponding lamp body Detailed implementation mode

[0086] Hereinafter, the detailed implementation mode of the present invention will be described with reference to the drawings. In each figure, the directions of the vehicle lamp are described as (front: rear: left: right: up: down). The implementation mode is an example rather than a limitation of the invention, and all the features described in the implementation mode and their combinations are not necessarily the essential content of the invention. In addition, in the following description of the implementation mode and the modification example, the same reference numerals are assigned to the same structures and the repeated description is appropriately omitted.

[0087] [First Embodiment]

[0088] (Vehicle lamp)

[0089] Figure 1 It is a front view of the vehicle lamp 1 according to the first embodiment of the present invention. The vehicle lamp 1 is a headlamp installed at the left and right corner parts in front of the vehicle.

[0090] As Figure 1 shown, the vehicle lamp 1 includes: a container-shaped lamp body 2 having a front surface opening 2'; a front surface cover 4 assembled to the front surface opening 2' of the lamp body 2. The front surface cover 4 is made of, for example, a light-transmitting resin such as polycarbonate or glass, and by installing the front surface cover 4 on the front surface opening 2' of the lamp body 2, a lamp chamber S is defined inside.

[0091] In the defined lamp chamber S, a high-beam lamp unit Hi and a low-beam lamp unit Lo are housed.

[0092] The high-beam lamp unit Hi and the low-beam lamp unit Lo are optical units configured to project the light emitted from the light source forward of the vehicle to form a high-beam light distribution / low-beam light distribution. Each lamp unit (Hi, Lo) uses a conventionally known structure, such as a reflector type or a projection type lamp unit, and the type is not limited.

[0093] The lamp body 2 is formed by injection molding using a hard rigid resin material. A sealing groove 3 for engaging with a sealing leg provided at the periphery of the front surface cover 4 is provided around the periphery of the front surface opening 2' of the lamp body 2 (refer to the following Figure 2A).

[0094] On the outer surface of the peripheral edge of the front surface opening 2' of the lamp body 2, a mounting portion 60 is provided so as to protrude outward.

[0095] On the mounting portion 60, a boss 7 of a cylindrical body is provided so as to protrude forward. On the front surface cover 4, a mounting portion having a thin wall portion or an opening is provided corresponding to the hole position of the boss 7. The front surface cover 4 is mounted on the lamp body 2, and the front surface cover 4 is fastened to the lamp body 2 by screwing a self-tapping screw into the inner hole of the boss 7 from the front. The boss 7 is used for assisting the mounting of the front surface cover 4 after the front surface cover 4 is fused to the lamp body 2, or for remounting when the front surface cover 4 is temporarily removed from the lamp body 2.

[0096] In the first embodiment, the front surface cover 4 is fixed to the boss 7 by using a self-tapping screw, but it is not limited thereto. It may also be a method of embedding an insert nut in the boss 7 which is a cylindrical body and fastening the front surface cover 4 with a bolt. In the state where the vehicle lamp 1 is mounted on the vehicle body, the mounting portion 60 provided with the boss 7 is shielded by the vehicle body and cannot be seen from the outside.

[0097] (Mounting portion)

[0098] The mounting portion 60 will be described in detail. Figures 2A to 4C Both represent Figure 1 The mounting portion 60 of the F portion shown in the lamp body 2. Figure 2A It is a front view of the mounting portion 60. Figure 2B It is a front view perspective view of the mounting portion 60. Figure 3A It is a rear view of the mounting portion 60. Figure 3B It is a rear view perspective view of the mounting portion 60. Figure 4A It is a front view of the mounting portion 60. Figure 4B It is along Figure 4A The horizontal end face view of the G-G line. Figure 4C It is along Figure 4A The vertical end face view of the H-H line.

[0099] The mounting portion 60 is provided so as to protrude outward from the sealing groove 3 surrounding the front opening of the lamp body 2. As an example, Figures 2A to 4C The mounting portion 60 shown is provided on the upper side of the lamp body 2 and protrudes upward from the outer peripheral wall 3a of the substantially horizontal sealing groove 3.

[0100] The mounting portion 60 includes a mounting surface 69 and a boss 7 provided on the mounting surface 69.

[0101] The mounting surface 69 has a substantially constant plate thickness, is mainly composed of a curved surface, and has a substantially triangular outer shape when viewed from the front. At approximately the center of the mounting surface 69 that is triangular when viewed from the front, a boss 7 is provided so that the opening of the inner hole 79 protrudes forward. The outer shape of the mounting portion 60 is not limited to a substantially triangular shape, and may also be a rectangular shape, a semicircular shape, or the like. In addition, the boss 7 is provided to protrude at least approximately at the center of the mounted portion of the mounting surface 69, that is, the wall surface, with respect to the extending direction. For example, in the first embodiment, the boss 7 is provided to protrude at approximately the center in the left-right direction in which the sealing groove 3 extends on the mounted portion of the mounting surface 69, that is, the wall surface.

[0102] The boss 7 is provided to protrude from the front surface of the mounting surface 69. At least a part of the mounting surface 69 is connected to the outer peripheral side surface 75 of the boss 7, and the mounting surface 69 and the boss 7 are integrally formed.

[0103] The mounting surface 69, as the area around the boss 7 centered on the boss 7, is divided into a plurality of areas, and each area is formed with concave portions and convex portions in different ways. In addition, the concave portions and convex portions are formed in a shape that is recessed or bulged toward the circumferential inner side where the boss 7 is located.

[0104] In the first embodiment, the mounting surface 69 is divided into four areas: an upper area 61, a lower area 62, a left area 63, and a right area 64 centered on the boss 7. The left area 63 and the right area 64 are formed in a concave shape that is recessed backward when viewed from the front, and the upper area 61 and the lower area 62 are formed in a convex shape that bulges forward relatively. Since the plate thickness of the mounting surface 69 is maintained to be substantially constant, when viewed from the back, the left area 63 and the right area 64 are formed in a convex shape, and the upper area 61 and the lower area 62 are formed in a concave shape relatively.

[0105] In the mounting surface 69, the edge portions of the adjacent areas are gently curved, and there are no buckling portions or steps, and they are smoothly continuous. The mounting surface 69 is formed to be bent multiple times in the extending direction (front-back direction) of the boss 7 centered on the boss 7, is connected to the outer peripheral side surface 75 of the boss 7 provided at the center, and is integrated with the boss 7.

[0106] In other words, the area of the outer peripheral side surface of the boss 7 is approximately divided into four. When viewed from the front, the upper area is set as the upper area 71 of the boss, the lower area is set as the lower area 72 of the boss, the left area is set as the left area 73 of the boss, and the right area is set as the right area 74 of the boss. In this case, the mounting surface 69 protrudes from the vicinity of the top opening of the boss 7 in the upper area 71 and the lower area 72 of the boss 7 toward the circumferential outer side, and gently extends toward the base end side of the boss 7 and the circumferential outer side. Similarly, the mounting surface 69 protrudes from the base end side of the left area 73 and the right area 74 of the boss 7 toward the circumferential outer side, and extends toward the top side of the boss 7 and the circumferential outer side.

[0107] Accordingly, the boss 7 is in a state where it is recessed in the upper and lower regions on the mounting surface 69 and protruded in the left and right regions. Therefore, as Figure 4B shown, in a horizontal cross-sectional view, the boss 7 appears to protrude from the mounting surface 69, and as Figure 4C shown, in a vertical cross-sectional view, the boss 7 appears to be recessed in the mounting surface 69.

[0108] In the mounting portion 60, the mounting surface 69 protruding from the outer peripheral side surface of the boss 7 is bent multiple times around the boss 7 and connected to the boss 7 to form an integral body.

[0109] (Function and effect)

[0110] According to the above structure, the mounting surface 69 is connected to the outer peripheral side surface 75 of the boss 7 in a wavy shape in the circumferential direction. This will be described in detail.

[0111] Figures 5A to 5C is an explanatory diagram for explaining the effect of the above structure. Figure 5A is Figure 1 the front view of the mounting portion 60 provided on the lamp body at the F portion shown. Figure 5B is taken as Figure 4A a schematic developed view of the outer peripheral side surface 75 of the boss 7 which is a cylindrical body shown. Figure 5B The dashed line in Figure 5B represents the connecting portion between the edge portion of the adjacent region of the outer peripheral side surface of the boss 7 and the mounting surface 69. In addition, in Figure 5C is a cross-sectional view taken along the J-J line shown in Figure 5A shown.

[0112] As Figure 5B shown, through the above structure, the mounting surface 69 is connected to the outer peripheral side surface of the boss 7 in a wave shape along the circumferential direction. In other words, the mounting surface 69 protrudes from the connection region AR, and through each part in the connection region AR, the mounting surface 69 extends bendably on the substrate side or the top end side of the boss 7.

[0113] The boss 7 is embedded in the center of the mounting surface 69 that is bent multiple times in the circumferential direction. Thereby, the bonding area between the mounting surface 69 and the boss 7 increases, and the mounting surface 69 and the boss 7 are connected both in the circumferential direction and the axial direction. Therefore, the mounting surface 69 itself functions as a reinforcing rib between the boss 7 and the mounting surface 69, and the mounting surface 69 and the boss 7 are firmly integrated, improving the rigidity of the mounting portion 60. Conventionally, in the case of protruding the boss, in order to improve the rigidity, it is necessary to provide a reinforcing rib at the landing portion (base end portion) of the boss. In contrast, in the first embodiment, the bent mounting surface 69 itself functions as a reinforcing rib for the boss 7, so there is no need to provide a rib for ensuring the rigidity of the mounting surface 69 and the boss 7. The boss 7 protrudes from the mounting surface 69 without providing a rib while ensuring the necessary length and necessary rigidity.

[0114] In addition, since the mounting surface 69 is composed of a curved surface, the sectional moment of inertia of the mounting surface 69 increases, and the bending rigidity of the mounting portion 60 can be improved. Due to these improvements in rigidity, the wall thickness of the mounting surface 69 can be reduced. In addition, due to the removal of the rib and the reduction in wall thickness due to the improvement in rigidity, weight reduction can be achieved.

[0115] In the first embodiment, the connection region AR is surrounded by the outer peripheral surface 75, but the mounting surface 69 only needs to protrude from at least a part of the outer peripheral surface and extend bent toward the substrate side or the top side of the boss 7.

[0116] Figure 5A The shown J-J line is the boundary line between the seal groove 3 and the mounting portion 60. Figure 5C is along Figure 5A The cross-sectional view along the J-J line shows the landing shape (contact shape) of the mounting surface 69 on the seal groove 3.

[0117] As Figure 5CAs shown, through the above structure, the landing surface of the mounting surface 69 with respect to the sealing groove 3 is wavy, and the mounting surface 69 is meanderingly connected to the outer peripheral wall 3a of the sealing groove 3 extending in a strip shape by the sealing groove 3. Conventionally, if a flat mounting portion protrudes from the wall surface of a sealing groove or the like, its landing surface is linear and the bending rigidity is extremely low. Therefore, it is necessary to provide a reinforcing rib at the landing portion (base end portion). In contrast, in the first embodiment, the landing surface of the mounting surface 69 formed by the curved surface with respect to the sealing groove 3 is wavy, the landing area of the mounting surface 69 with respect to the sealing groove 3 increases, and the mounting surface 69 also lands in the front-rear direction. In addition, the mounting surface 69 is mainly in the left-right direction, which is the extending direction of the sealing groove 3, and is also bonded in the orthogonal direction (front-rear direction) of the sealing groove 3 where a load is applied when the fastening member is fastened to the boss 7. The mounting surface 69 itself also functions as a reinforcing rib between the mounting surface 69 and the sealing groove 3. Through the above structure of the mounting surface 69, the rigidity of the mounting portion 60 can be improved, and there is no need to provide a rib at the base end portion of the mounting surface 69, and the wall thickness of the mounting surface 69 can be reduced.

[0118] Moreover, the sealing groove 3 in which the mounting surface 69 is installed is thick-walled and has high rigidity because it engages with the sealing leg of the front face cover 4. Therefore, the mounting surface 69 is bonded to the thick-walled and high-rigidity sealing groove 3 to be integrated, thereby further improving the rigidity of the mounting portion 60.

[0119] When taking the boss 7 as a reference, the mounting surface 69 protrudes from at least a part of the outer peripheral side surface 75 of the boss 7, extends outward in the circumferential direction, and extends curvedly toward the base end side or the top end side of the boss 7. At this time, the mounting surface 69 does not protrude from the topmost end portion (front end face of the cylindrical body) of the boss 7 having the opening 79 of the inner hole, but protrudes from a position slightly descending toward the base end portion side from at least the topmost end portion. Since the topmost end portion of the boss 7 is a surface for other components (the front face cover 4 in the first embodiment) to abut and be closely connected, in order to improve the accuracy of the connection portion and suppress interference with other components, it is preferable to connect the mounting surface 69 to the outer peripheral side surface 75 of the boss 7 except for the top end region.

[0120] In the first embodiment, the mounting surface 69 is connected to the entire outer peripheral side surface of the boss 7, but the present invention is not limited thereto, and at least a part of the curved mounting surface 69 may be connected to the outer peripheral side surface of the boss 7. For example, it may also be that only the lower region 62 of the mounting surface 69 is connected to the boss 7 while bending forward. In this case, when viewed from the front, only the lower region 62 of the boss 7 is formed as a convex portion, and the left region 63 and the right region 64 are configured as opposing concave portions.

[0121] In addition, the mounting surface 69 is provided with a pair of concave portions and convex portions in each of four regions when viewed from the front, but it is not limited thereto, and as long as concave portions or convex portions are provided in at least one region. The adjacent regions are relatively formed as convex portions or concave portions.

[0122] In the mounting surface 69, at least one region forming a concave portion or a convex portion is sufficient. At this time, the regions forming the concave portion or the convex portion are preferably provided at a plurality of positions separated in the circumferential direction with respect to the central axis of the boss 7. Additionally, more preferably, concave portions are provided at two positions opposite to each other in the circumferential direction of the boss 7, and convex portions are provided at two other opposite positions. Since the clamping region is configured as the opposing concave or convex portions, the unevenness, i.e., the number of bends, of the mounting surface 69 increases, enabling the rigidity of the mounting portion 60 to be improved and the thin-walling of the mounting surface 69 to be achieved.

[0123] The mounting surface 69 connected to the boss 7 projects from the sealing groove 3, but is not limited thereto. This structure can also be applied to a boss directly provided on the wall surface of the lamp body 2, for example, a boss for fixing the lamp units (Lo, Hi) provided on the back wall 6. At this time, the mounting surface 69 forms a part of the back wall 6 of the lamp body 2.

[0124] Part of the mounting surface 69 can be bent in any region and connected to the boss 7, forming a concave portion or a convex portion with respect to the boss 7. In the case where the mounting portion 60 projects from the wall surface of the lamp body 2 such as the sealing groove 3, in the mounting surface 69, it is preferable to provide the concave portion or the convex portion of the mounting surface 69 in the region clamped by the wall surface and the boss, and more preferably to form a convex portion in the clamped region. For example, in the first embodiment, the lower region 62 of the mounting surface 69 clamped by the sealing groove 3 and the boss 7 forms a convex portion when viewed from the front. Thus, when the mounting surface 69 of the lower region 62 clamped by the sealing groove 3 and the boss 7 is configured as a convex portion, the mounting surface 69 of the lower region 62 bends and extends rearward in the axial direction while facing the adjacent boundary portion (circumferential outer side), i.e., in the direction in which a load is applied when mounting other components. Therefore, the mounting surface 69 serves as a reinforcing rib for the boss 7 and a reinforcing rib for the sealing groove 3. Thereby, the rigidity of the mounting portion 60 is further improved. Additionally, since the boss 7 projects, assuming that the clamping region is formed by a concave portion, the base end portion of the boss 7 is mainly supported by the mounting surface 69. In order to mainly support the central portion of the boss using the mounting surface 69 and support the boss 7 with good balance and firmly, it is more preferable that the mounting surface 69 of the clamping region forms a convex portion.

[0125] (Variant example)

[0126] Figures 6A to 6C The mounting portion 60A showing the variant example is illustrated. Figure 6A It is a front view of the mounting portion 60A. Figure 6B It is a rear perspective view of the mounting portion 60A. Figure 6C It is a side perspective view of the mounting portion 60A.

[0127] The mounting portion 60A has a mounting surface 69A and a boss 7, which protrudes from the outer peripheral wall 3a of the sealing groove 3. The boss 7 is provided at the center of the lower end portion of the mounting surface 69A that is substantially triangular in the front view. The outer peripheral wall 3a of the sealing groove 3 is slightly inclined backward, and the front lower end portion of the horizontally provided boss 7 is integrated with the sealing groove 3.

[0128] The gap between the boss 7 and the sealing groove 3 is formed to be very narrow, and the lower region 62A below the mounting surface 69A exists although it has a small area. When observed from the front, it forms a convex portion and is smoothly connected to the left region 63A and the right region 64A which are concave portions. Therefore, the connecting portion between the mounting surface 69A and the sealing groove 3 forms a waveform when observed from above. According to the above structure, the boss 7 is firmly connected to the sealing groove 3 and the mounting surface 69A without ribs.

[0129] Similar to the mounting portion 60A, the clamping area (in the first embodiment, the lower region 62A) between the boss 7 and the wall surface (in the first embodiment, the sealing groove 3) where the mounting portion 60A is provided is preferably narrower than other regions. In other words, it is preferable to make the gap between the wall surface where the mounting portion 60A protruding from the lamp body 2 is provided and the boss 7 narrow or zero. Thereby, the boss 7 can be firmly supported by the mounting surface 69A and firmly connected to the wall surface, the rigidity of the mounting portion 60A can be improved, and the thinning of the mounting surface 69A can be achieved.

[0130] [Second Embodiment]

[0131] Figure 7 The front view showing the vehicle lamp 101 according to the second embodiment of the present invention. Figure 7 The vehicle lamp 101 shown has a lamp body 102 and a front surface lens 104. The lamp body 102 is formed of resin or the like and has a container shape including a back wall extending vertically in the front-rear direction and a bottom wall extending front-rear in a vertical cross-section along the front-rear direction, and has an opening at its front end. As Figure 9A 、 Figure 9B 、 Figure 11A and Figure 11B shown, a groove-shaped sealing portion 103 recessed backward is provided around the entire circumference of the front end opening of the lamp body 102. The front surface lens 104 is formed of a light-transmissive resin or glass or the like and is fixed to the sealing portion 103.

[0132] In Figure 7 shown, a high beam lamp unit Hi for irradiating a high beam forward (toward the front of the paper surface) and a low beam lamp unit Lo are housed in the divided lamp chamber S.

[0133] As Figure 7 shown, at the upper end portion of the lamp body 102, a plurality of brackets 105 as shown in Figures 8A to 10A are integrally formed behind the sealing portion 103. In Figure 7The detailed form of the bracket 105 formed in the sealing portion 103 is omitted. Figure 8A is from Figure 7 A front view of the bracket 105 observed from the front of the lamp body 102. Figure 8B is a rear view of the bracket 105. Figure 9A This is a perspective view of the bracket 105 as viewed from the right front and from the upper side. Figure 9B Observed from the left front and bottom Figure 7 A three-dimensional view of the bracket 105 of the lamp body 102 is shown. Figure 10A is a top view of the bracket 105 .

[0134] like Figure 8A , Figure 9A as well as Figure 9B As shown, a bottomed cylindrical boss portion 109 for screwing the front lens 104 is formed on the upper end wall 103c of the groove-shaped sealing portion 103 protruding forward and backward. The outer peripheral edge of the front lens 104 is provided with: a convex portion (not shown) formed along the entire circumference of the sealing portion 103; and a mounting portion (not shown) formed integrally with the convex portion at a position corresponding to the boss portion 109 on the outer side of the convex portion. The front lens 104 is screwed and fixed to the hole 109a of the boss portion 109 by a self-tapping screw (not shown) penetrating the mounting portion in a state where the convex portion is engaged with a sealing elastic member (not shown) provided on the inner side of the sealing portion 103. The front lens 104 defines a sealed lamp chamber S on the inner side of the lamp body 102 via the sealing portion 103.

[0135] like Figure 9A and Figure 9B As shown, the bracket 105 is composed of a main body 106 and a mounting portion 107. The main body 106 is integrally formed in a state connected to the lamp body 102 and extends upward. The mounting portion 107 is integrated with the main body 106 in a state bent obliquely backward and upward from the rear end 106a of the main body 106. The mounting portion 107 is engaged and fixed to a vehicle body (not shown) through a mounting hole 107a.

[0136] Figure 8A , Figure 8B , Figure 9A , Figure 9B as well as Figure 10A The main body 106 of the bracket 105 shown in FIG. 1 has a wave-shaped curved shape in which concave curved portions 106c and convex curved portions 106d are alternately continuous left and right. Figure 8B and Figure 9A As shown, the base end portion 106 e which is the lowest portion of the main body 106 is formed integrally with the curved surface portion 102 a of the lamp body 102 .

[0137] Figure 10B The section is made at the section line II Figure 10AEnd view of the main body portion 106 of the bracket 105 of the lamp body 102 shown. Figure 10C This is an end view assuming that the main body portion 106' of the bracket 105' of the lamp body 102' in the existing method is cut at the position of the cutting line I-I. The bracket 105' has a structure common to the bracket 105 in addition to replacing the structure of the main body portion 106' with the main body portion 106 of the second embodiment.

[0138] As Figure 10C shown, the main body portion 106' in the conventional bracket 105' is formed to have a T-shaped base end portion 108' that protrudes upward from the flat portion h2 of the lamp body 102' and has a T-shape with the T upside down in a vertical cross-section. The conventional main body portion 106' is strengthened against bending by having ribs W (double-dashed line portions), but on the other hand, there is a problem of weight increase caused by the addition of the ribs W.

[0139] In addition, as Figure 10C shown, in the conventional T-shaped base end portion 108', by providing arc portions R3, R4 at the connecting portion between the main body portion 106' and the flat portion h2, stress concentration in the case where bending stress acts is reduced. From the viewpoint of reducing stress concentration, it is preferable that the arc portions R3, R4 are formed as gently as possible with a small curvature. However, since the lamp body is generally formed of resin or the like, in the case of forming an arc portion such as R3', R4' with a small, gentle, and large curvature, there may be a reduction in strength due to difficulty in cooling by heat in the T-shaped base end portion 108'. Therefore, in the conventional T-shaped base end portion 108', it is necessary to form arc portions with a large curvature as shown by reference numerals R3, R4, and there is also a problem that it is difficult to reduce stress concentration.

[0140] In view of the above problems, Figure 10B the main body portion 106 of the bracket 105 of the second embodiment shown is formed to have a Y-shaped base end portion 108 that protrudes upward from the curved surface portion 102a of the lamp body 102 and has a Y-shape with the Y upside down in a vertical cross-section. The Y-shaped base end portion 108 has gentle arc portions R5, a front curved surface portion 108a, and a rear curved surface portion 108b on the lower surface. The Y-shaped base end portion 108 has a concave lower surface at the upper side, thereby realizing thinning of the support portion of the main body portion 106, and improving the rigidity against bending by making the concave lower surface arc-shaped and making the flat plate portion an arc portion.

[0141] In addition, as Figure 10B and Figure 10CAs shown, a main body portion 106 is formed by a part of the curved surface portion 102a of the lamp body 102, namely, a front curved surface portion 108a and a rear curved surface portion 108b. Thus, the Y-shaped base end portion 108 can form arc portions R1 and R2 with a smaller and gentler curvature than the arc portions R3 and R4 of the conventional T-shaped base end portion 108' at the root of the main body portion 106. Therefore, the stress concentration near the connection portion with the lamp body side can be reduced compared with the conventional main body portion 106'.

[0142] In addition, as Figure 10B shown, the main body portion 106 is preferably not in a straight line shape like the conventional main body portion 106', but is formed into a gentle arc shape that continuously follows the curvature of the front arc portion R1 and the rear arc portion R2, that is, follows the curvature of the curved surface portion of the lamp body 102. The main body portion 106 has a Y-shaped base end portion 108 with arc portions R1, R2, and R5, thereby achieving an improvement in bending rigidity based on the combination of arc shapes. Therefore, in the mounting portion of the main body portion 106, that is, the curved surface portion 102a, the wall thickness d1 of the curved surface portion 102a is made thinner than Figure 10C the wall thickness d1' of the conventional flat surface portion h2 shown, and the same or higher rigidity as the conventional one can be achieved even without providing the conventional rib W. Therefore, the bracket 105 of the second embodiment can achieve an improvement in rigidity and achieve weight reduction, contributing to the weight reduction of the lamp body 102 and the vehicle lamp 101. In addition, the rigidity of the bracket 105 is further improved by forming the main body portion 106 into a curved shape following the arc portion R1 and the arc portion R2.

[0143] In addition, Figure 11A is an end view of the bracket 105 of the lamp body 102 of the second embodiment shown in Figure 10A cut along the cutting line II-II. Figure 11B is an end view of the bracket 105 of the lamp body 102 of the second embodiment shown in Figure 10A cut along the cutting line III-III.

[0144] As Figure 11A shown, in the second embodiment, it is preferable that a part of the front end portion 106b of the main body portion 106 (convex curved portion 106d) of the plurality of brackets 105 is integrally formed in a continuous manner with the rear end portion 103a of the sealing portion 103 of the lamp body 102, and the base end portion of the main body portion 106 is integrally formed with the curved surface portion 102a of the lamp body 102.

[0145] As Figure 11A and Figure 11BAs shown, when the main body portion 106 is integrally formed with the sealing portion 103, the bending stress generated in the bracket 105 acts not only on the bracket 105 but also on the lamp body 102 via the sealing portion 103. In the vehicle lamp 101 according to the second embodiment, since the sealing portion 103 of the lamp body 102 also bears the bending stress generated in the bracket 105, the rigidity of the bracket can be achieved by both the lamp body 102 and the bracket 105. Therefore, the rigidity of the bracket 105 is further improved, and further weight reduction of the lamp body 102 and the vehicle lamp 101 can be achieved.

[0146] In addition, as Figure 11B shown, in the second embodiment, it is preferable that a part of the front end portion 106b of the main body portion 106 (convex bending portion 106d) of the plurality of brackets 105 is integrally formed in a continuous manner with the mounting boss portion 109 integrally formed with the sealing portion 103, and the base end portion of the main body portion 106 is integrally formed with the curved surface portion 102a of the lamp body 102. In Figure 11B , the upper front end portion 106b1 of the main body portion 106 is integrally formed with the mounting boss portion 109 for the front surface lens 104, and the lower front end portion 106b2 of the main body portion 106 is integrally formed with the sealing portion 103.

[0147] As Figure 11A and Figure 11B shown, when the main body portion 106 is integrally formed with the mounting boss portion 109 for the front surface lens 104, the bending stress generated in the bracket 105 acts not only on the lamp body via the bracket 105 and the sealing portion 103 but also on the front surface lens 104 threadedly fixed to the mounting boss portion 109. In the vehicle lamp 101 according to the second embodiment, since the lamp body 102 and the front surface lens 104 also bear the bending stress generated on the bracket 105, the rigidity of the bracket 105 can be achieved by the overall combination of the bracket 105, the lamp body 102, and the front surface lens 104. Therefore, the rigidity of the bracket 105 is further improved, and further weight reduction of the lamp body 102 and the vehicle lamp 101 can be achieved.

[0148] [Third Embodiment]

[0149] Referring again to Figure 7 , the vehicle lamp 201 of the third embodiment includes a lamp body 202 and a front surface cover 204. The lamp body 202 and the front surface cover 204 have the same structure as the lamp body 102 and the front surface lens 104 of the second embodiment except for the structures described later. The front surface cover 204 is engaged with the sealing portion 203 from the front via an elastic member for sealing (not shown), and a sealed lamp chamber S is defined inside the lamp body 202.

[0150] As Figure 7As shown, a plurality of brackets 205 shown in Figures 12 to 15A are integrally formed at the upper end of the lamp body 202. In Figure 7 , the detailed manner of the brackets 205 is omitted. Figure 13 is a perspective view of the bracket 205 of the third embodiment viewed from the obliquely front side of the lamp body 202. Figure 12 is a perspective view of the bracket 205 shown in Figure 13 viewed from the right rear obliquely of the lamp body 202. Figures 12 to 15A As shown in Figure 7 , the detailed manner of the brackets 205 is omitted. Figure 13 is a perspective view of the bracket 205 of the third embodiment viewed from the obliquely front side of the lamp body 202. Figure 12 is a perspective view of the bracket 205 shown in Figure 13 viewed from the right rear obliquely of the lamp body 202. Figure 7 As shown in Figure 7 , the detailed manner of the brackets 205 is omitted. Figure 13 is a perspective view of the bracket 205 of the third embodiment viewed from the obliquely front side of the lamp body 202. Figure 12 is a perspective view of the bracket 205 shown in Figure 13 viewed from the right rear obliquely of the lamp body 202. Figure 12 As shown in Figure 7 , the detailed manner of the brackets 205 is omitted. Figure 13 is a perspective view of the bracket 205 of the third embodiment viewed from the obliquely front side of the lamp body 202. Figure 12 is a perspective view of the bracket 205 shown in Figure 13 viewed from the right rear obliquely of the lamp body 202. Figure 13 As shown in Figure 7 , the detailed manner of the brackets 205 is omitted. Figure 13 is a perspective view of the bracket 205 of the third embodiment viewed from the obliquely front side of the lamp body 202. Figure 12 is a perspective view of the bracket 205 shown in Figure 13 viewed from the right rear obliquely of the lamp body 202. Figure 12 As shown in Figure 7 , the detailed manner of the brackets 205 is omitted. Figure 13 is a perspective view of the bracket 205 of the third embodiment viewed from the obliquely front side of the lamp body 202. Figure 12 is a perspective view of the bracket 205 shown in Figure 13 viewed from the right rear obliquely of the lamp body 202.

[0151] As Figure 12 and Figure 13 shown, the bracket 205 is composed of a main body portion 206 and a mounting portion 207. The main body portion 206 and the mounting portion 207 are respectively of the same structure as the main body portion 106 and the mounting portion 107 of the second embodiment except for the structures described later.

[0152] Figure 14A is Figure 12 a rear view of the bracket 205 shown in Figure 12 . Figure 14B is Figure 14A an end view cut at the position of the cutting line I-I of the main body portion 206 shown in Figure 14A . Figure 12 , Figure 13 , Figure 14A shown, the main body portion 206 is composed of a plurality of semi-cylindrical portions having a cross-sectional semi-cylindrical shape as shown in the end view of Figure 14B . In the third embodiment, the main body portion 206 is composed of a convex semi-cylindrical portion 209 protruding forward and a pair of concave semi-cylindrical portions 208a, 208b recessed relative to the front and integrally formed in a smoothly continuous manner on its left and right. The main body portion 206 is configured such that the concave and convex semi-cylindrical portions are alternately formed in the order of the concave semi-cylindrical portion 208a, the convex semi-cylindrical portion 209, and the concave semi-cylindrical portion 208b to form a continuous semi-cylindrical portion, thereby forming a waveform shape as shown in Figure 14B . Figure 14B shown, the main body portion 206 is composed of a plurality of semi-cylindrical portions having a cross-sectional semi-cylindrical shape as shown in the end view of Figure 14B . In the third embodiment, the main body portion 206 is composed of a convex semi-cylindrical portion 209 protruding forward and a pair of concave semi-cylindrical portions 208a, 208b recessed relative to the front and integrally formed in a smoothly continuous manner on its left and right. The main body portion 206 is configured such that the concave and convex semi-cylindrical portions are alternately formed in the order of the concave semi-cylindrical portion 208a, the convex semi-cylindrical portion 209, and the concave semi-cylindrical portion 208b to form a continuous semi-cylindrical portion, thereby forming a waveform shape as shown in Figure 14B . Figure 14B shown, the main body portion 206 is composed of a plurality of semi-cylindrical portions having a cross-sectional semi-cylindrical shape as shown in the end view of Figure 14B . In the third embodiment, the main body portion 206 is composed of a convex semi-cylindrical portion 209 protruding forward and a pair of concave semi-cylindrical portions 208a, 208b recessed relative to the front and integrally formed in a smoothly continuous manner on its left and right. The main body portion 206 is configured such that the concave and convex semi-cylindrical portions are alternately formed in the order of the concave semi-cylindrical portion 208a, the convex semi-cylindrical portion 209, and the concave semi-cylindrical portion 208b to form a continuous semi-cylindrical portion, thereby forming a waveform shape as shown in Figure 14B .

[0153] In addition, as Figure 13 shown, the lowermost base end portions 208a3, 208b3, and 209b of the concave semi-cylindrical portion 208a, the concave semi-cylindrical portion 208b, and the convex semi-cylindrical portion 209 are all integrally formed with the curved surface 202a of the lamp body 202.

[0154] Thus, by forming the main body portion 206 of the bracket 205, which is integrated with the lamp body 202, from more than one semi-cylindrical portion, the bracket 205 has a larger sectional moment of inertia and higher rigidity against bending compared to the conventional flat-shaped main body portion. In order to enhance the bending rigidity, the conventional flat-shaped main body portion needs to be provided with ribs or the plate thickness of the main body portion needs to be increased. In contrast, the main body portion 206 of the third embodiment does not have ribs and has a corrugated shape even with a thin plate thickness, thus having sufficient rigidity against bending. Therefore, it becomes a configuration that can contribute to the weight reduction of the bracket 205 and the lamp body 202 required from the perspective of carbon neutrality. In addition, as long as the plurality of semi-cylindrical portions forming the main body portion 206 have a structure in which concave and convex semi-cylindrical portions are alternately repeated, the number is not limited to 3 as in the third embodiment, and may be 2 or 4 or more.

[0155] In addition, Figure 13 The base end portions 208a3, 208b3 of the main body portion 206 of the bracket 205 and the base end portion 209b are integrated with the lamp body 202 at the curved surface 202a where the sectional moment of inertia is larger than that of a plane. Therefore, the main body portion 206 has higher rigidity than integration with the plane of the lamp body 202.

[0156] In addition, as shown in Figure 12 and Figure 13 The front end portions 208a1, 208a2 of the concave semi-cylindrical portion 208a of the main body portion 206 of the bracket 205 and the front end portions 208b1, 208b2 of the concave semi-cylindrical portion 208b are integrally formed at the rear end portion 203a of the sealing portion 203. The front end portion 209a of the convex semi-cylindrical portion 209 also protrudes forward from the front end portions 208a2, 208b1 of the concave semi-cylindrical portion, and thus is integrally formed with the rear end portion 203a of the sealing portion 203.

[0157] As shown in Figure 7 The front surface cover 204 is fixed to the lamp body 202 at the sealing portion 203. As shown in Figure 12 When the concave semi-cylindrical portions 208a, 208b and the convex semi-cylindrical portion 209 of the main body portion 206 of the bracket 205 are integrally formed with the sealing portion 203 of the lamp body 202, the bending stress generated in the bracket 205 acts not only on the bracket 205 but also on the lamp body 202 via the sealing portion 203. According to the vehicle lamp 201 of the third embodiment, by having the sealing portion 203 of the lamp body 202 also bear the bending stress generated in the bracket 205, the rigidity of the bracket 205 can be achieved by both the sealing portion 203, which is a part of the lamp body 202, and the main body portion 206 having corrugated semi-cylindrical portions. Therefore, the weight of the bracket 205 is reduced by thinning, and the rigidity is further improved, enabling further weight reduction of the lamp body 202 and the vehicle lamp 201.

[0158] As shown inFigure 12 As shown, particularly in the region formed by the concave semi-cylindrical portion 208a on the left side (208b on the right side), the sealing portion 203, and the curved surface 202a of the lamp body 202, by dividing the box portions 212, 212, it has stronger rigidity than other regions. On a part of the curved surface portion 102a of the lamp body 202 that is the bottom surface of the box portions 212, 212, there are provided bosses 211, 211 for mounting to the vehicle body.

[0159] In addition, as Figure 15A , Figure 12 and Figure 13 shown, at the base end portions 208a3, 208b3 of the concave semi-cylindrical portions 208a, 208b, there are provided drain holes 210, 210 that penetrate from the inside to the outside of the box portions 212, 212. The drain holes 210, 210 are formed so as to penetrate from the box portions 212, 212 to the outside of the lamp chamber S, and drain the water caused by condensation or the like generated inside the box portions 212, 212 to the outside of the lamp body 202, that is, to the outside of the lamp chamber S.

[0160] Figure 5B The concave semi-cylindrical portions 208a, 208b shown strengthen the rigidity by forming the box portions 212, 212. Therefore, even if the drain holes 210, 210 are formed, it is difficult to cause a reduction in rigidity. Therefore, the bracket 205 can have sufficient rigidity even if the drain holes 210, 210 are provided.

[0161] In addition, as Figure 15C shown by the enlarged portion of the reference numeral K (the enlarged portion of the portion surrounded by the dashed line), on the curved surface 202a of the bottom surface of the box portions 212, 212, there is provided an inclined surface 212a that gently descends from near the lower end portion 211a of the boss 211 to the base end portions 208a3, 208b3 of the concave semi-cylindrical portions 208a, 208b. The inclined surface 212a is formed to be continuous with the drain holes 210, 210 located at the lowermost part of the box portions 212, 212. As a result, the water caused by condensation or the like generated inside the box portions 212, 212 is promoted to be drained to the outside of the box portions 212, 212 via the descending inclined surface 212a.

[0162] In addition, Figure 16A is a view showing a modified example of the bracket 205 as Figure 7 and Figures 12 to 15A shown, the bracket 205'. Figure 16B It represents an end view of the bracket 205' cut along the horizontal direction. Except for the structure of the main body portion 206', the bracket 205' has the same as Figure 7 and Figures 12 to 15AThe common structure of the bracket 205 shown. The mounting portion 207 of the bracket 205' is integrated with the main body portion 206' in a state of being bent obliquely rearward and upward from the top end 206a' of the main body portion 206'.

[0163] Figure 16A and Figure 16B The main body portion 206' shown is composed of convex semi-cylindrical portions 213a, 213b that protrude forward and concave semi-cylindrical portions 214 that are recessed forward, which are repeatedly concave and convex continuous semi-cylindrical portions. As Figure 16B shown, the main body portion 206' has a cross-sectional shape in the shape of a crank. The convex semi-cylindrical portions 213a, 213b are composed of a pair of plate-like portions 213a2, 213b2 and bent portions 213a3, 213b3 respectively. The concave semi-cylindrical portion 214 is composed of a plate-like portion 214a, plate-like portions 213a2, 213b2, and a bent portion 214b. The main body portion 206' has a large sectional moment of inertia by having a crank shape with a bent portion in a part, and has high rigidity. In addition, the front end portions 213a1, 213b1 of the convex semi-cylindrical portions 213a, 213b are integrally formed with the sealing portion 203, so that the main body portion 206' also has higher rigidity like the main body portion 206.

[0164] [Fourth Embodiment]

[0165] (Vehicle Lamp 301)

[0166] Figure 17 is a front view of the vehicle lamp 301 according to the fourth embodiment of the present invention. The vehicle lamp 301 is a headlamp installed at the left and right corner portions in front of the vehicle.

[0167] As Figure 17 shown, the vehicle lamp 301 includes a container-shaped lamp body 302 that is open on the front side and a front surface cover 304 assembled to the front surface opening portion of the lamp body 302. Except for the content described later, the lamp body 302 and the front surface cover 304 have the same structure as the lamp body 2 and the front surface cover 4 of the Figure 1 first embodiment shown.

[0168] Ventilation holes 350 for forming an air passage for communicating the inside and outside of the lamp chamber S are formed in the lamp body 302. Through the ventilation holes 350, the heat generated by the lighting of the light sources of the respective lamp units (Hi, Lo) arranged in the lamp chamber S, the expansion and contraction of the air in the lamp chamber S due to changes in the temperature, etc. are allowed, and the moisture in the lamp chamber S is released to the outside, preventing the accumulation of moisture in the lamp chamber S. Thereby, the fogging inside the lamp chamber S caused by the moisture in the lamp chamber S adhering to the front surface cover 4 from the inside of the lamp chamber S is prevented.

[0169] (Lamp Body 302)

[0170] Describe the shape of the lamp body 302 in detail. Figure 18 is Figure 17 the front view of the lamp body 302 shown. Figure 19 is Figure 18 the front perspective view of the lamp body 302 shown.

[0171] Around the peripheral edge of the front opening of the lamp body 302, a sealing groove 303 is provided for engaging with the sealing feet provided at the peripheral edge of the front surface cover 304. On the outer surface of the lamp body 302, a vehicle body mounting portion, i.e., a bracket 305, is protrudingly provided corresponding to the shape of the mounting portion on the vehicle body side for mounting on the vehicle body.

[0172] The lamp body 302 has a back wall 306, a top surface 307, a bottom surface 308, and left and right side surfaces 309, 309 as constituent surfaces. The back wall 306 bulges toward the back side and is connected to the adjacent top surface 307, bottom surface 308, and side surfaces 309, 309 via ridge lines. In addition, the top surface 307, bottom surface 308, and side surfaces 309, 309 are substantially convex curved shapes that gently bulge toward the outside of the lamp body 302, and are gently curved at their respective edges and continuously connected without buckling portions or steps. Therefore, the lamp body 302 is integrally formed in a container shape with rounded corners. In the fourth embodiment, the top surface 307 is formed to extend from the opening of the lamp body 302 toward the back, but the extension amount is also small, and it gently bends and extends from the edge of the opening toward the lower back and is connected to the back wall 306, and is integrally formed with the back wall 306. In this way, the constituent surfaces of the lamp body 302 are mainly not flat surfaces, but curved surfaces with a large radius of curvature.

[0173] On the lamp body 302, a first unit mounting hole 331 for mounting the low-beam lamp unit Lo is formed above the center of the back wall 306. In addition, a second unit mounting hole 332 for mounting the high-beam lamp unit Hi is formed above the left side of the back wall 306.

[0174] In addition, on the lamp body 302, a first calibration component mounting hole 341, a second calibration component mounting hole 342, and a third calibration component mounting hole 343 are formed around the first unit mounting hole 331. Calibration components (not shown) are mounted in the respective calibration component mounting holes 341, 342, 343.

[0175] The first calibration component mounting hole 341 is arranged between the first unit mounting hole 331 and the second unit mounting hole 332 in the left - right direction, and is provided at the lower edge portion of the back wall 306 in the up - down direction. The second calibration component mounting hole 342 is arranged at a position that is approximately left - right symmetric with respect to the first calibration component mounting hole 341 with the first unit mounting hole 331 as a reference. Therefore, the second calibration component mounting hole 342 is provided at the lower edge portion of the back wall 306, which is offset from the first unit mounting hole 331 to the right in the direction opposite to the left where the first calibration component mounting hole 341 is provided by a distance approximately equal to the distance from the first unit mounting hole 331 to the first calibration component mounting hole 341. The third calibration component mounting hole 343 is formed at the upper end portion of the back wall 306 above the second calibration component mounting hole 342.

[0176] Moreover, on the lamp body 302, a ventilation hole 350 is formed in the right - most region of the back wall 306, to the right of the third calibration component mounting hole 343.

[0177] (Back wall and beam)

[0178] In the back wall 306, the first beam 361, the second beam 362, the third beam 363, the fourth beam 364, and the fifth beam 365, which form a part of the back wall 306, extend from the upper end portion to the lower end portion of the back wall 306. Here, the portion of the back wall 306 other than the components of the beams 361 - 365 is referred to as the back wall main body 369.

[0179] The first beam 361 extends straight upward approximately from the front view of the first calibration component mounting hole 341 provided at the lower end portion of the back wall 306 to the upper end portion of the back wall 306.

[0180] The second beam 362 has the first calibration component mounting hole 341 below and the second unit mounting hole 332 above as endpoints and extends by connecting the two. Therefore, the second beam 362 is formed to be inclined to the right when viewed from the front.

[0181] The third beam 363 has the second calibration component mounting hole 342 below and the first unit mounting hole 331 above as endpoints and extends in a way to connect the two. Therefore, the third beam 363 is formed to be inclined to the left in the opposite direction to the second beam 362 when viewed from the front.

[0182] The fourth beam 364 has the second calibration component mounting hole 342 below and the third calibration component mounting hole 343 above as endpoints and extends in a way to connect the two. Therefore, the fourth beam 364 is formed to be approximately vertical when viewed from the front.

[0183] Starting from the second calibration component mounting hole 342 below the fifth beam 365 and the ventilation hole 350 above, it extends in a way that connects the two. Therefore, the fifth beam 365 is inclined to the right when viewed from the front.

[0184] Figures 20A to 20E is along Figure 18 The end view along the cutting line shown. Figure 20A is along Figure 18 The end view along the A-A line of, mainly showing the cross-sectional shape of the first beam 361. Figure 20B is along Figure 18 The end view along the B-B line of, mainly showing the cross-sectional shape of the second beam 362. Figure 20C is along Figure 18 The end view along the C-C line of, mainly showing the cross-sectional shape of the third beam 363. Figure 20D is along Figure 18 The end view along the D-D line of, mainly showing the cross-sectional shape of the fourth beam 364. Figure 20E is along Figure 18 The end view along the E-E line of, mainly showing the cross-sectional shape of the fifth beam 365.

[0185] As Figures 20A to 20E shown, although the cross-sectional shapes orthogonal to the extension directions of the respective beams 361 - 365 have different curvature radii, widths, and protrusion amounts, they are all configured to be substantially arc-shaped. The beams 361, 362, 363, 365 are formed such that the protruding direction of their curved surfaces is the lamp chamber S direction (front). The beam 364 is formed such that the curved surface and the protruding direction are the outside of the lamp chamber S direction (rear direction).

[0186] Regardless of the protruding direction, the respective beams 361 - 365 are smoothly connected to the back wall main body 369 via ridge lines, and the cross-sectional shape of the lamp body 302 maintains a certain wall thickness, has no bending part, and is continuously formed.

[0187] For example, the longitudinal cross-sectional shape of the back wall 306 including the second beam 362 will be described in detail Figure 20B . As Figure 20B shown, a sealing groove 303 is provided at the edge above the opening of the lamp body 302 (also refer to Figure 18), the rear wall main body 369 integrated with the top surface 307 extends downward from here to the rear, bends forward at the boundary with the second beam 362, and is smoothly connected to the second beam 362. The second beam 362 extends downward, bends forward, and then bends back to the rear, thus forming a substantially arc shape bulging forward. The second beam 362 bends forward and downward at the lower edge portion and is smoothly connected to the rear wall main body 369 again. The rear wall main body 369 extends forward and downward, bends inward toward the lamp chamber S, and is connected to the edge portion of the bottom surface 308 that bends with the same curvature. The bottom surface 308 extends directly forward and is connected to the sealing groove 303 provided at the edge portion below the opening of the lamp body 302. In this way, the top surface 307 and the rear wall main body 369, the rear wall main body 369 and the second beam 362, and the rear wall main body 369 and the bottom surface 308 are respectively bent with the same curvature and smoothly connected at their connection portions without forming a buckling portion or a step.

[0188] As Figure 20A , Figure 20C , Figure 20D and Figure 20E shown, the first beam 361, the third beam 363, the fourth beam 364 (the convex direction of the beam part is the opposite direction), and the fifth beam 365 are also connected to the rear wall main body 369 via the ridge line in the same way. In this way, each of the beams 361 to 365 maintains the cross-sectional shape in the extending direction as a substantially arc shape, extends from the upper end portion to the lower end portion of the rear wall 306, and is continuously and smoothly connected to the rear wall main body 369 as adjacent surfaces without forming a step or a corner at the end.

[0189] The cross-sectional shape of the lamp body 302 configured as described above is configured as a wave shape with a complex continuous curve. Also, the rear wall 306 is connected to the top surface 307, the bottom surface 308, and the side surfaces 309, 309 via the ridge line. At the boundary portion, the two are bent with the same curvature and smoothly and continuously connected. The rear wall 306 itself and the top surface 307, the bottom surface 308, and the side surfaces 309, 309 are also substantially curved surfaces that gently bulge outward with a large radius of curvature, and the adjacent curved surfaces are smoothly continuous with each other. Therefore, the lamp body 302 itself is mainly composed of curved surfaces, the formation of corners is eliminated, and the wall thickness is substantially kept constant.

[0190] Use Figure 21 , Figure 22A and Figure 22B to illustrate the functions and effects of the rear wall 306 and the lamp body 302 configured as described above. Figure 21 is the front view of the lamp body 302, and each of the beams 361 to 365 of the lamp body 302 is shown in black.

[0191] As Figure 21As shown, each of the beams 361 to 365 extends from the upper end portion to the lower end portion of the back wall 306, and other beams extend obliquely from the end portion of a certain beam, forming a truss structure in units of triangles. Therefore, the lamp body 302 including the back wall 306 becomes a structure that is difficult to deform with respect to loads. In addition, since the beams 361 to 365 themselves are curved surfaces with a substantially circular cross-section that disperses stress, they become a structure with higher rigidity and stronger resistance to deformation. Thus, the rigidity of the lamp body 302 is improved, and by improving the rigidity, it is also possible to thin the walls, achieving weight reduction.

[0192] In the fourth embodiment, first unit mounting holes 331 and alignment component mounting holes 341, 342, 343 provided on the back wall 306 are formed at the end portions of each of the beams 361 to 365. Due to the nature of the mounting holes for mounting other components, they are formed with a wall thickness greater than that of other portions of the back wall 306 and have high rigidity. Therefore, by utilizing these structurally necessary components for a part of the beam, particularly the part that becomes an important beam joint, the rigidity of the back wall 306 and even the lamp body 302 is improved. It should be noted that a waterproof wall is provided around the ventilation hole 350 in a manner that surrounds the ventilation hole 350, so it also becomes a part with high rigidity like the mounting holes, which will be described in detail later.

[0193] In addition, a part of the sealing groove 303 of the opening also forms a part of the truss structure. Similar to the mounting holes, the sealing groove 303 of the opening is configured to have a wall thickness greater than that of other portions and high rigidity due to its property of engaging with other components (refer to Figure 20B ), and at least a part of the sealing groove 303 is used to form a truss structure together with the beams 361 to 365, thereby improving the rigidity of the lamp body 302.

[0194] Next, the effects of the shape of the lamp body 302 will be described. Figure 22A It is a vertical cross-sectional view showing a schematic diagram of a lamp body 502 of a comparative existing structure. Figure 22B It is a vertical cross-sectional view of the lamp body 302.

[0195] As Figure 22A shown, the lamp body 502 of the existing structure has a substantially planar back wall 506, top surface 507, and bottom surface 508. In addition, the lamp body 502 has a top surface 507 and a bottom surface 508 as horizontal planes connected to the upper and lower end portions of the vertically arranged back wall 506. Therefore, a corner portion bent at 90 degrees is formed at the connection portion. Such a corner portion formed by the collision of planes is likely to cause stress concentration. In order to suppress deformation caused by stress concentration and ensure rigidity, ribs 510 are provided at the corner portion.

[0196] In contrast, as Figure 22BAs shown, in the lamp body 302, the back wall 306, the top surface 307, and the bottom surface 308 are connected to each other via ridge lines. In this way, the lamp body 302 is mainly composed of curved surfaces, and adjacent surfaces are curved and connected to each other at the boundary with the same curvature. The constituent surfaces are smoothly continuous with each other, and no buckling part is formed at the connection part, and no corner part caused by stress concentration is formed. By suppressing the formation of corner parts with stress concentration, a structure with stress dispersion, strong anti-deformation ability, and high rigidity is achieved. In the fourth embodiment, all the constituent surfaces are connected by ridge lines, but as long as at least the back wall 306 is connected to any one of the top surface 307, the bottom surface 308, and the side surfaces 309, 309 via ridge lines.

[0197] Similarly, the beams 361 to 365 are connected to the back wall main body 369 via ridge lines, and are also smoothly continuous at the connection part. Therefore, the cross-sectional shape of the back wall 306 is configured as a waveform without a bent part, suppressing stress concentration at the corner part and increasing rigidity. In this case, as long as it is not a flat surface, the bending direction (the protruding direction of the substantially arc-shaped cross-section) of each of the beams 361 to 365 with respect to the extending direction can be either the front / rear (the back direction).

[0198] In addition, the wall thickness can be kept substantially constant even at the connection part with the surface that is likely to be thick-walled, so weight reduction can be achieved. Furthermore, the connection parts and corner parts of reinforcing members such as ribs become thick-walled and are likely to accumulate heat, so they are parts where molding defects are likely to occur during resin molding. However, by being able to subtract this part, molding defects can also be suppressed.

[0199] (Shape of the back wall around the vent hole)

[0200] The lamp body 302 is mainly composed of the smooth continuity of curved surfaces, thereby increasing the rigidity of the lamp body 302 and realizing the thinning of the lamp body 302. In the fourth embodiment, the whole of the lamp body 302 is mainly composed of curved surfaces, but at least a part of the lamp body 302 may be mainly composed of curved surfaces. By using curved surfaces for the constituent surfaces, the rigidity can be increased and thinning can be realized. In the fourth embodiment, the periphery of the vent hole 350 provided in the back wall 306 of the lamp body 302 is mainly composed of curved surfaces. By using curved surfaces for at least the constituent surfaces around the vent hole 350, the rigidity of the lamp body 302 can be increased and at least the periphery of the vent hole 350 can be thinned.

[0201] Use Figures 23A to 23D And Figure 24 The structure of the back wall 306 around the vent hole 350 will be described. Figures 23A to 23D And Figure 24 Indicate Figure 18 The F part, mainly indicating the structure of the vent hole 350 and the periphery of the vent hole 350. Figure 23A The rear view showing the F part. Figure 23B Is along Figure 23AEnd view of the G-G line shown Figure 23C is along Figure 23A End view of the H-H line shown Figure 23D is a top view of part F Figure 24 is a rear perspective view of part F. Also refer to Figure 18 front view and Figure 19 front perspective view

[0202] As Figures 23A to 23D and Figure 24 shown, the vent hole 350 is a through hole provided in the back wall 306 and has a semi-cylindrical shape bulging on the upper side when viewed from the back. The cylindrical wall 351 protrudes rearward from the back surface of the back wall 306 so as to surround the vent hole 350, and the vent hole 350 is configured as the space inside the cylindrical wall 351

[0203] The cylindrical wall 351 has a substantially semi-cylindrical shape bulging on the upper side, and its semi-cylindrical part extends slightly below the flat part to form. In other words, the cylindrical wall 351 is formed in a cylindrical shape, and a partition wall 357 that divides the inner space of the cylindrical wall 351 vertically is formed inside the cylindrical wall 351. A cutout 358 that opens at the lower end is formed deeper on the lower side of the cylindrical wall 51. The space sandwiched by the part extended to a position slightly below the horizontal part (partition wall 357) of the cylindrical wall 351 is the cutout 358. Thus, the vent hole 350 is configured as a substantially semi-cylindrical shape

[0204] The inner peripheral surface and the outer peripheral surface of the cylindrical wall 351 are provided with a slight slope with respect to the axis. That is, the inner peripheral surface moves away from the axis as it approaches the rear end, and the outer peripheral surface approaches the axis as it approaches the rear end

[0205] On the back surface of the back wall 306 provided with the cylindrical wall 351, a waterproof wall 353 is provided so as to surround the cylindrical wall 351 at a position where the vent hole 350 is separated from the cylindrical wall 351 to a certain extent. The waterproof wall 353 protrudes rearward, and the rear end portion of the waterproof wall 353 protruding rearward is set to be located more rearward than the rear most end portion of the cylindrical wall 351 protruding rearward

[0206] As Figure 23A shown, the waterproof wall 353 includes: an eaves part 353a that bulges upward when viewed from the back; a right side surface 353b that extends straight downward from the right end point of the eaves part 353a; a left side surface 353c that extends straight downward from the left end point of the eaves part 353a; and a lower inclined surface 353d that extends obliquely downward to the left from the lower end point of the right side surface 353b. The lower inclined surface 353d is formed to extend to the lower extension line from the lower end point of the left side surface 353c, and the waterproof wall 353 is formed in an enclosed manner with the lowest part open

[0207] The structure is such that it is difficult for water to enter the lamp chamber S through the vent hole 350 via the cylindrical wall 351 and the waterproof wall 353. Additionally, even when water adheres to the cylindrical wall 351 and the waterproof wall 353, it quickly flows down due to the open portion of the waterproof wall 353 and the slope of the cylindrical wall 351.

[0208] As Figure 23B and Figure 23C shown, the waterproof wall 353 is provided so as to protrude from the back wall 306 toward the back. At least a part of the waterproof wall 353 (the base end sides of the eaves portion 353a, the right side surface 353b, and the left side surface 353c in the fourth embodiment) also constitutes the back wall 306 of the lamp body 302.

[0209] The direction in which the cylindrical wall 351 surrounding the waterproof wall 353 is located is defined as the inner side, and the opposite direction is defined as the outer side. The eaves portion 353a, the right side surface 353b, and the left side surface 353c are wall surfaces that protrude from the back surface of the back wall 306 toward the back. Midway through their protrusion (extension) toward the back, curved surfaces are provided so as to protrude outward on their outer surfaces. Additionally, these curved surfaces are bent and extended in such a way as to fold back toward the base end portions (front) of the eaves portion 353a, the right side surface 353b, and the left side surface 353c, and constitute a part of the back wall 306.

[0210] In other words, the back wall 306 around the outer periphery of the eaves portion 353a, the right side surface 353b, and the left side surface 353c extends rearward while being bent from a position separated from the waterproof wall 353 by a certain degree, and then further bends toward the waterproof wall 353 and connects to the outer surfaces of the eaves portion 353a, the right side surface 353b, and the left side surface 353c. In the eaves portion 353a, the right side surface 353b, and the left side surface 353c, from the portions where the back wall 306 is connected to their respective base end portions, they constitute a part of the back wall 306. The eaves portion 353a, the right side surface 353b, and the left side surface 353c, that is, the back wall 306, further bend toward the inner side of the waterproof wall 353 at their respective base end portions, and constitute the back wall 6 inside the waterproof wall 353.

[0211] Due to being configured as described above, when the lamp body 302 is viewed from the front, the lamp body 302 around the vent hole 350 appears to have a depression formed at a position separated from the vent hole 350 by a certain degree with the vent hole 350 as the center. Additionally, when the lamp body 302 is viewed from the back, the lamp body 32 around the vent hole 350 appears to bulge rearward. Concave and convex portions centered on the vent hole 350 are formed on the lamp body 302.

[0212] (Function and Effect)

[0213] By being configured as described above, the back wall 306 around the ventilation hole 350 can be formed by a curved surface. Compared with a flat surface, forming the lamp body 302 by a curved surface can increase the bending moment and improve the rigidity, thereby enabling the lamp body 302 to be made thinner. According to the above structure, at least the rigidity of the back wall 306 around the ventilation hole 350 can be improved. Even if the wall thickness of the back wall 306 around the ventilation hole 350 is set to be thin, the same level of rigidity as before can be ensured.

[0214] In the fourth embodiment, the back wall 306 around the eaves portion 353a, the right side surface 353b, and the left side surface 353c of the back wall 306 is formed by a curved surface, but it is not limited thereto. In at least a part of the waterproof wall 353, on the outer surface in the middle of the backward protrusion of the waterproof wall 353, a curved surface protrudes outward. The curved surface bends outward toward the base end portion side of the waterproof wall 353 and extends back and forth, and it is sufficient to form a part of the back wall 306. In other words, the curved surface protruding outward from the waterproof wall 353 is the back wall 306, and the bent back wall 306 is connected to the outer surface of the waterproof wall 353.

[0215] In the middle of the backward protrusion of the waterproof wall 353, a curved surface (back wall 306) protrudes outward. The curved surface bends toward the base end portion side and extends back and forth. Preferably, when the curved surface protrudes from the waterproof wall 353, it first extends outward to the top (rear) of the waterproof wall 353, and then bends toward the base end portion side of the waterproof wall 353 and extends back and forth to form a part of the back wall 306. By forming the back wall 306 through the secondary bending of the curved surface, the number of curved surfaces forming the back wall 306 can be increased, and the rigidity of the lamp body 302 can be further improved.

[0216] In the fourth embodiment, the back wall 306 does not protrude from the top of the protrusion at the rear of the eaves portion 353a, the right side surface 353b, and the left side surface 353c, but protrudes from the outer surface in the middle of the protrusion (extension). In other words, a part of the back wall 306 is connected to the side surface in the middle of the backward protrusion of the waterproof wall 353. This is to ensure the design freedom and the function of the waterproof wall 353. Suppose a part of the back wall 306 is connected to the top of the backward protrusion of the waterproof wall 353, then the entire waterproof wall 353 of that part also forms the back wall 306. The waterproof wall 353 has necessary structures such as inclination and slope in the function of preventing water intrusion. However, if the waterproof wall 353 completely becomes the back wall 306, it is easy to cause problems when the structures required for the back wall 306 are opposite to those required for the waterproof wall 353. To ensure the design freedom, it is preferable to connect the back wall 306 to a part of the side surface of the waterproof wall 353 rather than the protruding top of the waterproof wall 353.

[0217] When the curved back wall 306 is connected to the outer surface of the rear protrusion of the waterproof wall 353 midway, the base end side of the waterproof wall 353 starting from the connection part is integrated with the back wall 306 to form the waterproof wall 353 and the back wall 36, and the top end side starting from the connection part forms the waterproof wall 353. Here, the part of the waterproof wall 353 from the connection part with the back wall 306 to the protrusion top end is defined as the waterproof wall top end part 353f. In this case, in order to prevent water from invading into the ventilation hole 350, it is preferable to have the waterproof wall top end part 353f. That is, compared with connecting the curved back wall 306 to the rear protrusion top end of the waterproof wall 353, it is preferable to connect it midway of the rear protrusion. Use [[ and ​ To illustrate this ​ is the lamp body 602 for comparison ​ is the lamp body 302 of the fourth embodiment ​ and ​ The arrow marks in

[0218] As ​ shown, the back wall 606 of the lamp body 602 is integrated with the eaves part 653a of the waterproof wall 653, and the whole eaves part 653a is formed by a curved surface. In other words, a part of the back wall 606 is bent and connected to the top end of the eaves part 653a to form the eaves part 653a

[0219] Since the whole eaves part 653a is a curved surface, the water attached to the surface of the eaves part 653a flows along the eaves part 653a into the inside of the waterproof wall 653. This is because, even if the eaves part 653a is a plane, a draft angle needs to be set during injection molding. In addition, since the eaves part 653a is arranged slightly inclined inward, the water falling on the upper part of the eaves part 653a easily flows directly from the back wall 606 along the inside of the eaves part 653a into the inside of the waterproof wall 653. In this way, if the back wall 606 is connected to the top end of the eaves part 653a, the waterproof function of the waterproof wall 653 is reduced

[0220] In contrast, as ​ shown, in the lamp body 302 of the fourth embodiment, the back wall 306 is connected to the outer surface of the midway of the extension behind the eaves part 353a, and the waterproof wall top end part 353f is formed at the top end of the eaves part 353a. By providing the waterproof wall top end part 353f, even if the water attached to the back wall 306 connected to the eaves part 353a flows towards the eaves part 353a, it is blocked by the waterproof wall top end part 353f. The waterproof wall top end part 353f inhibits the water from flowing into the inside of the eaves part 353a. By providing the waterproof wall top end part 353f, the curved surface of the back wall 306 around the ventilation hole 350 is formed to improve the rigidity, and the function as a waterproof wall is ensured

[0221] The waterproof wall 353 is separated from the cylindrical wall 351 forming the ventilation hole 350, surrounds the cylindrical wall 351, extends rearward of the lamp body 302, and it is sufficient that at least a part of the waterproof wall 353 is connected to form the curved surface of the rear wall 306. It is also possible that only a part of the wall surfaces (the eaves part 353a, the right side surface 353b, the left side surface 353c, the lower inclined surface 353d) constituting the waterproof wall 353, for example, the upper half of the left side surface, is connected to the curved surface constituting the rear wall 306.

[0222] (Bracket)

[0223] As ​ and ​ shown, near the waterproof wall 353 of the lamp body 302, two brackets 305 are provided for mounting the ​ vehicle lamp 301 shown in the figure on the vehicle body. They are referred to as the first bracket 305a and the second bracket 305b. The first bracket 305a is provided protruding upward above the right side of the waterproof wall 353. The second bracket 305b is provided on the right side of the waterproof wall 353 and below the first bracket 305a.

[0224] The second bracket 305b is configured as a flat plate with a long hole and is horizontally provided so as to protrude rearward from the rear wall 306. As Figure 23B and Figure 24 shown, the left base end portion of the second bracket 305b is connected to the right side surface 353b of the waterproof wall 353 and is integrated with the waterproof wall 353. Since the second bracket 305b is a bracket for vehicle mounting, it is configured to have a thick wall and high rigidity. At least a part of the second bracket 305b with high rigidity is integrated with the waterproof wall 353, thereby improving the rigidity of the waterproof wall 353 and the rigidity of the rear wall 306 around the waterproof wall 353. Thereby, further thinning of the rear wall 306 can be achieved.

[0225] The preferred embodiments of the present invention have been described above, but the above embodiments are examples of the present invention, and combinations thereof can be made based on the knowledge of those skilled in the art, and such a manner is also included in the scope of the present invention.

[0226] This application is based on Japanese Patent Application No. 2023-6328 filed on January 19, 2023, Japanese Patent Application No. 2023-6542 filed on January 19, 2023, Japanese Patent Application No. 2022-212060 filed on December 28, 2022, and Japanese Patent Application No. 2022-211963 filed on December 28, 2022, and the contents thereof are incorporated herein by reference.

Claims

1. A vehicle lamp, characterized in that, Comprising: a container-shaped lamp body provided with a front surface opening; a front surface cover assembled to the front surface opening of the lamp body, partitioning a lamp chamber inside, a cylindrical body is prominently provided on a constituent surface constituting the lamp body, the constituent surface protrudes from at least a part of the outer peripheral side surface of the cylindrical body and extends bently toward the base end side or the top end side of the cylindrical body.

2. The vehicle lamp according to claim 1, wherein, the constituent surface is a mounting portion prominently provided from the wall surface of the lamp body, the region is provided between the cylindrical body and the wall surface.

3. The vehicle lamp according to claim 1 or 2, wherein, the region is provided at a plurality of portions separated in the circumferential direction with respect to the central axis of the cylindrical body.

4. A vehicle lamp, characterized in that, Comprising: a lamp body having a front surface opening; a front surface lens mounted to the front surface opening of the lamp body, forming a lamp chamber inside the lamp body; a bracket provided as a mounting portion for mounting to a vehicle body on the lamp body, the bracket has: a main body portion connected to the lamp body; a mounting portion engaged with the vehicle body, a base end portion of the main body portion is formed into a Y-shaped base end portion and is integrally formed with a curved surface portion of the lamp body, and the Y-shaped base end portion has a Y-shaped vertical cross section.

5. The vehicle lamp according to claim 4, wherein, a sealing portion is provided at the front surface opening of the lamp body, the main body portion is integrally formed with the sealing portion.

6. The vehicle lamp according to claim 4 or 5, wherein, the main body portion of the bracket is integrally formed in a continuous manner with a boss portion for mounting the front surface lens.

7. A vehicle lamp, characterized in that, Comprising: a lamp body having a front end opening; a front surface cover mounted to the front end opening of the lamp body, forming a lamp chamber inside the lamp body; a bracket provided as a mounting portion for mounting to a vehicle body on the lamp body, the bracket has: a main body portion connected to the lamp body; a mounting portion engaged with the vehicle body, the main body portion is constituted by a semi-cylindrical portion having a cross-sectional semi-cylindrical shape including at least a part of a bent portion, a base end portion of the semi-cylindrical portion is integrally formed with the curved surface of the lamp body.

8. The vehicle lamp according to claim 7, wherein, a sealing portion is provided at the front end opening of the lamp body, the semi-cylindrical portion is integrally formed with the sealing portion.

9. The vehicle lamp according to claim 7 or 8, wherein, the semi-cylindrical portion is configured to form a plurality of continuous semi-cylindrical portions in which a convex semi-cylindrical portion and a concave semi-cylindrical portion are alternately continuous, a front end portion of the concave semi-cylindrical portion is integrally formed with the sealing portion.

10. The vehicle lamp according to claim 9, wherein, a drain hole is provided at a base end portion of the concave semi-cylindrical portion.

11. The vehicle lamp according to claim 10, wherein, a base end portion of the concave semi-cylindrical portion is integrally formed with an inclined curved surface of the lamp body, the drain hole is formed in a continuous manner with the lowermost portion of the inclined curved surface.

12. A vehicle lamp, characterized in that, Comprising: a container-shaped lamp body having an open front surface; a front surface cover assembled to the front surface opening of the lamp body, partitioning a lamp chamber inside, An air vent hole and a cylindrical wall are formed on the back wall of the lamp body. The air vent hole forms an air passage for communicating the inside and outside of the lamp chamber. The cylindrical wall extends rearward of the lamp body in a manner surrounding the air vent hole. A waterproof wall is formed on the back wall. The waterproof wall is separated from the cylindrical wall and surrounds the cylindrical wall, extending rearward of the lamp body. At least a part of the curved surface of the waterproof wall protrudes from the side surface midway through the extension toward the back surface. The curved surface folds back and extends toward the base end portion side of the waterproof wall, constituting a part of the back wall.

13. The vehicle lamp according to claim 12, wherein A bracket for vehicle mounting is provided protruding from at least a part of the surface of the curved surface protruding from the waterproof wall. The bracket is integrally formed with the waterproof wall.

14. The vehicle lamp according to claim 12 or 13, wherein The curved surface extends once toward the front of the waterproof wall, and then turns back and bends and extends toward the base end portion side of the waterproof wall, constituting a part of the back wall.

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