Vehicle lighting

Abstract

The second light source (7B), the second incident part (10B) and the second reflecting part (11B) in the vehicle lamp (1) are located closer to the light guide part (12) than the first light source (7A), the first incident part (10A) and the first reflecting part (11A). A step part (15) is provided between the first reflecting part (11A) and the second reflecting part (11B). When viewed from the first incident part (10A) and the second incident part (10B), the first reflecting part (11A) is located on the upper side of the step part (15) and the second reflecting part (11B) is located on the lower side of the step part (15).

Description

Technical Field

[0001] The invention relates to a vehicle lamp.

[0002] This application claims priority based on Japanese Patent Application No. 2019-114755 filed on June 20, 2019, the contents of which are cited herein. Background Art

[0003] Conventionally, as a vehicle lamp mounted on a vehicle, a lamp which combines a light source such as a light emitting diode (LED) and a light guide such as an inner lens is known (for example, refer to Patent Document 1 listed below).

[0004] In such a vehicle lamp, light emitted from a light source is incident from the base end side of the light guide body into the interior of the light guide body, and the light is guided toward the front end side of the light guide body while being repeatedly reflected inside the light guide body. In addition, light reflected by a plurality of reflective cutouts provided on the back side of the light guide body is emitted to the outside from the front side of the light guide body. Thus, the front side of the light guide body can emit light as a light-emitting portion of the vehicle lamp.

[0005] In addition, in recent years, due to the diversification of designs, light guides are mutually illuminated by using light from light sources with different colors. As a combination of such vehicle lamps, for example, there are vehicle lamps mounted at the two corners of the front end side of the vehicle, which are composed of a vehicle width lamp (position lamp) emitting white light and a direction indicator (turn signal) emitting orange light, and there are vehicle lamps mounted at the two corners of the rear end side of the vehicle, which are composed of a tail lamp (tail lamp) emitting red light and a direction indicator (turn signal) emitting orange light.

[0006] Prior art literature

[0007] Patent Literature

[0008] Patent Document 1: Japanese Patent Application Publication No. 2016-181364 Summary of the invention

[0009] Problems to be solved by the invention

[0010] However, when making the light guide body emit light using light from light sources with different colors, it is necessary to configure the light sources with different colors respectively so that the light from each light source enters the light guide body from different positions and then guides each other in the same direction.

[0011] However, light incident from different positions of the light guide body will be emitted from different positions of the light guide body. In this case, when the light source to be lit is switched, the bright spot of each luminous color observed from the front side of the light guide body will be shifted in position, which may sometimes feel uncomfortable.

[0012] An aspect of the present invention provides a vehicle lamp capable of causing light incident from different positions of a light guide to be emitted from the same position of the light guide.

[0013] Means for solving problems

[0014] The embodiment of the present invention provides the following structures.

[0015] [1] A vehicle lamp, comprising:

[0016] a first light source and a second light source adjacent to each other; and

[0017] a light guide that guides the light from the first light source and the light from the second light source in the same direction,

[0018] The light guide has:

[0019] A first incident portion and a second incident portion, which are respectively arranged opposite to the first light source and the second light source, and the light emitted from the first light source and the second light source is incident on the inside of the first incident portion and the second incident portion;

[0020] a first reflecting portion and a second reflecting portion, which are respectively arranged opposite to the first incident portion and the second incident portion, and reflect the light incident from the first incident portion and the second incident portion;

[0021] a light guide portion for guiding the light reflected by the first reflecting portion and the second reflecting portion;

[0022] a light guide reflector disposed on the back side of the light guide and reflecting the light reflected by the first reflector and the second reflector toward the front side of the light guide; and

[0023] an emission portion, which is arranged on the front side of the light guide portion and emits the light reflected by the light guide reflection portion to the outside,

[0024] The second light source, the second incident portion, and the second reflecting portion are located closer to the light guide portion than the first light source, the first incident portion, and the first reflecting portion.

[0025] A step portion is provided between the first reflecting portion and the second reflecting portion,

[0026] When viewed from the first incident portion and the second incident portion, the first reflecting portion is located above the step portion, and the second reflecting portion is located below the step portion.

[0027] [2] The vehicle lamp according to [1] above, wherein:

[0028] The first reflecting portion includes: a first reflecting surface inclined toward the back side of the light guide relative to the optical axis of the light incident from the first incident portion; a second reflecting surface inclined toward the front side of the light guide relative to the optical axis of the light incident from the first incident portion; and a third reflecting surface inclined toward the light guide relative to the optical axis of the light incident from the first incident portion.

[0029] Among the light incident from the first incident portion, the first light incident on the first reflecting surface is reflected toward the back side of the light guide, the second light incident on the second reflecting surface is reflected toward the front side of the light guide, and the third light incident on the third reflecting surface is reflected toward the back side of the light guide portion.

[0030] [3] The vehicle lamp according to [2] above, wherein:

[0031] The first reflecting portion includes: a fourth reflecting surface that reflects the first light reflected by the first reflecting surface toward the back side of the light guide portion; and a fifth reflecting surface that reflects the second light reflected by the second reflecting surface toward the back side of the light guide portion.

[0032] [4] The vehicle lamp according to [3] above, wherein:

[0033] The first reflecting portion includes a sixth reflecting surface configured to reflect a portion of the first light reflected by the fourth reflecting surface toward a front side of the light guiding portion.

[0034] [5] The vehicle lamp according to [4] above, wherein:

[0035] The sixth reflecting surface has a light diffusing shape that reflects while diffusing the first light incident on the sixth reflecting surface.

[0036] [6] The vehicle lamp according to any one of [1] to [5] above, wherein:

[0037] The second reflecting portion includes: a first reflecting surface, which is inclined toward the back side of the light guide relative to the optical axis of the light incident from the second incident portion; a second reflecting surface, which is inclined toward the front side of the light guide relative to the optical axis of the light incident from the second incident portion; and a third reflecting surface, which is inclined toward the light guide portion side relative to the optical axis of the light incident from the second incident portion.

[0038] [7] The vehicle lamp according to [6] above, wherein:

[0039] Among the light incident from the second incident portion, the fourth light incident on the first reflecting surface is reflected toward the back side of the light guide, the fifth light incident on the second reflecting surface is reflected toward the front side of the light guide, and the sixth light incident on the third reflecting surface is reflected toward the back side of the light guide portion.

[0040] [8] The vehicle lamp according to [6] above, wherein:

[0041] Among the light incident from the second incident portion, the fourth light incident on the first reflecting surface is reflected toward the back side of the light guide, the fifth light incident on the second reflecting surface is reflected toward the front side of the light guide, and the sixth light incident on the third reflecting surface is reflected toward the back side of the light guide.

[0042] [9] The vehicle lamp according to [8] above, wherein:

[0043] The second reflecting surface has a light diffusing shape that reflects while diffusing the fifth light incident on the second reflecting surface.

[0044]

[10] The vehicle lamp according to any one of [7] to [9] above, wherein:

[0045] The second reflecting portion includes: a fourth reflecting surface that reflects the fourth light reflected by the first reflecting surface toward the back side of the light guiding portion; and a fifth reflecting surface that reflects the fifth light reflected by the second reflecting surface toward the back side of the light guiding portion.

[0046]

[11] The vehicle lamp according to any one of [1] to

[10] above, wherein:

[0047] The first light source and the second light source emit light of different colors.

[0048]

[12] The vehicle lamp according to any one of [1] to

[11] above, wherein:

[0049] The light guide body has a plurality of light guide lens portions, each of which includes the first and second incident portions, the first and second reflecting portions, the light guide portion, the light guide reflecting portion, and the emitting portion.

[0050] The plurality of light guide lens portions are arranged in a vehicle width direction, the adjacent light guide portions are formed integrally with each other, and the respective emission portions constitute a continuous emission portion.

[0051] Effects of the Invention

[0052] According to the aspect of the present invention, it is possible to provide a vehicle lamp capable of causing light incident from different positions of a light guide to be emitted from the same position of the light guide. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 It is a plan view showing the structure of a vehicle lamp according to an embodiment of the present invention.

[0054] Figure 2 Yes means Figure 1 FIG. 2 is a plan view showing the structure of the first light guide lens portion of the vehicle lamp.

[0055] Figure 3 Yes means Figure 2 A perspective view of the structure of the first light guiding lens unit shown.

[0056] Figure 4 It means from Figure 2 A perspective view of the optical path of light emitted from the first light source of the first light guide lens portion shown.

[0057] Figure 5 It means from Figure 2 A perspective view of the optical path of light emitted from the second light source of the first light guide lens unit shown.

[0058] Figure 6 It is a plan view showing a structure in which the sixth reflecting surface is set to a light diffusing shape.

[0059] Figure 7 It is a plan view showing a structure in which the second reflecting surface is formed into a light diffusing shape.

[0060] Figure 8 Yes means Figure 1 FIG. 2 is a plan view of the structure of the second light guide lens portion of the vehicle lamp shown.

[0061] Fig. 9 Yes means Figure 8 A perspective view of the structure of the second light guiding lens unit shown.

[0062] Fig.10 It means from Figure 8 A perspective view of the optical path of light emitted from the first light source of the second light guide lens portion shown.

[0063] Fig.11 It means from Figure 8 A perspective view of the optical path of light emitted from the second light source of the second light guide lens portion shown. DETAILED DESCRIPTION

[0064] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0065] In the drawings used in the following description, in order to make each component easier to see, the scales of dimensions may be different depending on the component, and the dimensional ratios of each component are not necessarily the same as the actual ones.

[0066] As one embodiment of the present invention, for example Figures 1 to 11 The vehicle lamp 1 shown will be described.

[0067] also, Figure 1 It is a plan view showing the structure of the vehicle lamp 1 . Figure 2 It is a plan view showing the structure of the first light guide lens portion side of the vehicle lamp 1 . Figure 3 It is a perspective view showing the structure of the first light guiding lens unit. Figure 4 It is a perspective view showing the optical path of light emitted from the first light source of the first light guide lens unit. Figure 5 It is a perspective view showing the optical path of light emitted from the second light source of the first light guide lens unit. Figure 6 It is a plan view showing a structure in which the sixth reflecting surface is set to a light diffusing shape. Figure 7 It is a plan view showing a structure in which the second reflecting surface is formed into a light diffusing shape. Figure 8 It is a plan view showing the structure of the second light guide lens portion side of the vehicle lamp 1 . Fig. 9 It is a perspective view showing the structure of the second light guiding lens unit. Fig.10 It is a perspective view showing the optical path of light emitted from the first light source of the second light guide lens unit. Fig.11 It is a perspective view showing the optical path of light emitted from the second light source of the second light guide lens unit.

[0068] In addition, in the drawings shown below, an XYZ orthogonal coordinate system is set, the X-axis direction is represented as the front-to-back direction (length direction) of the vehicle lamp 1, the Y-axis direction is represented as the left-right direction (width direction) of the vehicle lamp 1, and the Z-axis direction is represented as the up-down direction (height direction) of the vehicle lamp 1.

[0069] In the following description, unless otherwise specified, “front”, “rear”, “left”, “right”, “up” and “down” refer to directions when the vehicle lamp 1 is viewed from the front (from the front of the vehicle).

[0070] The vehicle lighting fixture 1 of the present embodiment is mounted, for example, at two corners (the corners of the right front end side in the present embodiment) of the front end side of a vehicle (not shown), and is composed of a position light and a turn signal light that combines a vehicle width light (position light) that emits white light and a direction indicator (turn signal) that flashes in orange light.

[0071] Specifically, if Figure 1As shown, a vehicle lamp 1 according to the present embodiment includes a lamp unit 2 that functions as a position lamp and a turn lamp.

[0072] The lamp unit 2 is arranged inside a lamp body 5, which is composed of a housing 3 with an open front (front) and a lens cover 4 that closes the front side of the housing 3 and has an opening 4a corresponding to the lamp unit 2. In addition, a transparent outer lens 6 is mounted on the opening 4a of the lens cover 4.

[0073] The lamp unit 2 includes: a plurality of (two in the present embodiment) first light sources 7A and a plurality of (two in the present embodiment) second light sources 7B; and a light guide 9 including a plurality of (two in the present embodiment) light guide lens portions 8A and 8B. The first light source 7A and the second light source 7B are arranged adjacent to each other in each light guide lens portion 8A and 8B.

[0074] The first light source 7A is a position light source and is composed of an LED that emits white light (hereinafter referred to as light L1). In addition, the LED uses a high-output (high-brightness) type LED for vehicle lighting (such as SMD LED, etc.). Each first light source 7A is installed on the lower surface side of a circuit substrate (not shown) provided with a drive circuit for driving the LED. As a result, each first light source 7A emits light L1 radially downward.

[0075] The second light source 7B is a light source for a turn signal lamp and is composed of an LED that emits orange light (hereinafter referred to as light L2). In addition, the LED uses a high-output (high-brightness) type LED (such as an SMD LED, etc.) for vehicle lighting. Each second light source 7B is mounted on the lower surface side of the same circuit substrate as the first light source 7A. As a result, each second light source 7B emits light L2 radially downward.

[0076] Furthermore, in the present embodiment, the plurality of LEDs constituting the above-mentioned first light source 7A and the second light source 7B and the driving circuit for driving the plurality of LEDs are mounted on a circuit substrate, but it may also be configured such that a mounting substrate on which the plurality of LEDs are mounted and a circuit substrate on which the driving circuit for driving the plurality of LEDs is provided are separately configured, and the mounting substrate and the circuit substrate are electrically connected via a wiring soft wire called a wiring harness, thereby protecting the driving circuit from the influence of heat generated by the plurality of LEDs.

[0077] The light guide 9 is formed of a flat plate-shaped light-transmitting member. The light-transmitting member may be made of a material having a higher refractive index than air, such as transparent resin such as polycarbonate and acrylic, or glass.

[0078] The light guide body 9 includes a first light guide lens portion 8A located on the inner side in the vehicle width direction and a second light guide lens portion 8B located on the outer side in the vehicle width direction among a plurality of light guide lens portions 8A and 8B arranged in the vehicle width direction.

[0079] The first light guiding lens portion 8A and the first light guiding lens portion 8B respectively include a first incident portion 10A and a second incident portion 10B, a first reflecting portion 11A and a second reflecting portion 11B, a light guiding portion 12, a light guiding reflecting portion 13, and an output portion 14, wherein adjacent light guiding portions 12 are formed integrally with each other, and each output portion 14 constitutes a continuous output portion 14A.

[0080] In addition, the first and second light guide lens portions 8A and 8B are as follows: Figure 2 , Figure 3 as well as Figure 8 , Fig. 9 As shown in the enlarged view in FIG. 1 , the second light source 7B, the second incident portion 10B, and the second reflecting portion 11B are located closer to the light guide portion 12 than the first light source 7A, the first incident portion 10A, and the first reflecting portion 11A.

[0081] In addition, a step portion 15 is provided between the first reflection portion 11A and the second reflection portion 11B. When viewed from the first incident portion 10A side (upper side), the first reflection portion 11A is located above the step portion 15. On the other hand, when viewed from the second incident portion 10B side (upper side), the second reflection portion 11B is located below the step portion 15.

[0082] The first incident portion 10A and the second incident portion 10B are arranged on one surface (the upper surface in the present embodiment) of the light guide 9 so as to face the first light source 7A and the second light source 7B adjacent to each other. In addition, the first and second incident portions 10A, 10B are provided in extension portions 16A, 16B extending from the base end side (the inner side in the vehicle width direction) of the light guide portion 12 corresponding to each light guide lens portion 8A and the first light guide lens portion 8B.

[0083] The first and second incident parts 10A, 10B have: a convex first light-focusing incident surface 17a, which is located at the center of the part opposite to the first and second light sources 7A, 7B, and a part of the light L1, L2 emitted from the first and second light sources 7A, 7B is incident on the first light-focusing incident surface 17a; a second light-focusing incident surface 17b, which is located on the inner peripheral side of a protrusion 18 protruding toward the first and second light sources 7A, 7B from a position surrounding the first light-focusing incident surface 17a, and a part of the light L1, L2 emitted from the first and second light sources 7A, 7B is incident on the second light-focusing incident surface 17b; and a light-focusing reflecting surface 17c, which is located on the outer peripheral side of the protrusion 18 and reflects the light L1, L2 incident from the second light-focusing incident surface 17b.

[0084] In the first and second incident parts 10A and 10B, the light L1 and L2 incident from the first and second light sources 7A and 7B are focused close to the optical axis. On the other hand, the light L1 and L2 incident from the second light-focusing incident surface 17b are reflected on the focusing reflection surface 17c and focused at a position close to the optical axis.

[0085] Thus, in the first and second incident portions 10A and 10B, the lights L1 and L2 radially emitted downward from the first and second light sources 7A and 7B are collimated or condensed and are incident on the inside of the light guide 9 .

[0086] The first reflecting portion 11A and the second reflecting portion 11B include reflecting surfaces arranged on the other surface (the lower surface in the present embodiment) side of the light guide 9 so as to face the first incident portion 10A and the second incident portion 10B adjacent to each other. In addition, the first and second reflecting portions 11A and 11B are provided in the extension portions 16A corresponding to the light guide lens portions 8A and the first light guide lens portions 8B.

[0087] like Figure 2 , Figure 3 as well as Figure 4 As shown, the first reflecting portion 11A constituting the first light guiding lens portion 8A includes, on the upper side of the step portion 15: a first reflecting surface 19a inclined toward the back side of the extension portion 16A (light guide body 9) with respect to the optical axis of the light L1 incident from the first incident portion 10A; a second reflecting surface 19b inclined toward the front side of the extension portion 16A (light guide body 9) with respect to the optical axis of the light L1 incident from the first incident portion 10A; and a third reflecting surface 19c inclined toward the front end side (light guiding portion 12 side) of the extension portion 16A with respect to the optical axis of the light L1 incident from the first incident portion 10A.

[0088] That is, these 1st, 2nd and 3rd reflecting surfaces 19a, 19b, 19c are formed by the inclined surfaces of the concave prism formed on the lower surface of the extension portion 16A. In addition, the 1st, 2nd and 3rd reflecting surfaces 19a, 19b, 19c are formed by inclined surfaces inclined in various directions with the optical axis of the light L1 incident from the 1st incident portion 10A as the center.

[0089] In the concave prism of the first reflecting portion 11A constituting the first light guiding lens portion 8A, the first light L11 incident on the first incident portion 10A and incident on the first reflecting surface 19a is reflected toward the back side of the extended portion 16A, the second light L12 incident on the second reflecting surface 19b is reflected toward the front side of the extended portion 16A, and the third light L13 incident on the third reflecting surface 19c is reflected toward the back side of the light guiding portion 12.

[0090] In addition, the first reflecting portion 11A constituting the first light guiding lens portion 8A includes: a fourth reflecting surface 19d that reflects the first light L11 reflected by the first reflecting surface 19a toward the back side of the light guiding portion 12; a fifth reflecting surface 19e that reflects the second light L12 reflected by the second reflecting surface 19b toward the back side of the light guiding portion 12; and a sixth reflecting surface 19f that reflects a portion of the first light L11 reflected by the fourth reflecting surface 19d toward the front side of the light guiding portion 12.

[0091] That is, the fourth, fifth and sixth reflecting surfaces 19d, 19e and 19f are formed by the side surfaces forming the contour of the extension 16A. The extension 16A has a shape above the step 15 divided by the fourth, fifth and sixth reflecting surfaces 19d, 19e and 19f.

[0092] In addition, regarding the sixth reflecting surface 19f, for example Figure 6 As shown, the sixth reflecting surface 19f may be configured to have a light diffusing shape that reflects while diffusing the first light L11 incident on the sixth reflecting surface 19f.

[0093] Specifically, the Figure 6 The sixth reflecting surface 19f shown is formed of a curved convex surface. Thus, in the first reflecting portion 11A constituting the first light guide lens portion 8A, the first light L11 incident on the sixth reflecting surface 19f can be reflected while being diffused toward the front side of the light guide portion 12.

[0094] like Figure 2 , Figure 3 as well as Figure 5 As shown, the second reflecting portion 11B constituting the first light guiding lens portion 8A includes, on the lower side of the step portion 15: a first reflecting surface 19a inclined toward the back side of the extension portion 16A (light guide body 9) with respect to the optical axis of the light L2 incident from the second incident portion 10B; a second reflecting surface 19b inclined toward the front side of the extension portion 16A (light guide body 9) with respect to the optical axis of the light L2 incident from the second incident portion 10B; and a third reflecting surface 19c inclined toward the front end side (light guiding portion 12) of the extension portion 16A with respect to the optical axis of the light L2 incident from the second incident portion 10B.

[0095] That is, the first, second and third reflecting surfaces 19a, 19b and 19c are formed by the inclined surfaces of the concave prism formed on the lower surface of the extension portion 16A and the light guide portion 12. In addition, the first, second and third reflecting surfaces 19a, 19b and 19c are formed by inclined surfaces inclined in various directions with the optical axis of the light L2 incident from the second incident portion 10B as the center.

[0096] In the second reflecting portion 11B constituting the first light guiding lens portion 8A, the fourth light L21 incident on the first reflecting surface 19a among the light L2 incident from the second incident portion 10B is reflected toward the back side of the extension portion 16A, the fifth light L22 incident on the second reflecting surface 19b is reflected toward the front side of the light guiding portion 12, and the sixth light L23 incident on the third reflecting surface 19c is reflected toward the back side of the light guiding portion 12.

[0097] In addition, the second reflecting portion 11B constituting the first light guiding lens portion 8A includes: a fourth reflecting surface 19d that reflects the fourth light L21 reflected by the first reflecting surface 19a toward the back side of the light guiding portion 12; and a fifth reflecting surface 19e that reflects the fifth light L22 reflected by the second reflecting surface 19b toward the back side of the light guiding portion 12.

[0098] That is, the fourth and fifth reflecting surfaces 19d and 19e are formed by side surfaces forming the outline of the extended portion 16A. The extended portion 16A has a shape defined by the fourth and fifth reflecting surfaces 19d and 19e on the lower side of the step portion 15.

[0099] In addition, regarding the second reflecting surface 19b, for example Figure 7 As shown, it is also possible to configure it to have a light diffusion shape that reflects while diffusing the fifth light L22 incident on the second reflecting surface 19b.

[0100] Specifically, the Figure 7 The second reflecting surface 19b shown is formed of a curved convex surface. Therefore, in the second reflecting portion 11B forming the first light guide lens portion 8A, the fifth light L22 incident on the second reflecting surface 19b can be reflected while being diffused toward the front side of the light guide portion 12.

[0101] like Figure 8 , Fig. 9 as well as Fig.10 As shown, the first reflecting portion 11A constituting the second light guiding lens portion 8B includes, on the upper side of the step portion 15: a first reflecting surface 19a inclined toward the back side of the extension portion 16B (light guiding body 9) with respect to the optical axis of the light L1 incident from the first incident portion 10A; a second reflecting surface 19c inclined toward the front side of the extension portion 16B (light guiding body 9) with respect to the optical axis of the light L1 incident from the first incident portion 10A; and a third reflecting surface 19c inclined toward the front end side (light guiding portion 12 side) of the extension portion 16B with respect to the optical axis of the light L1 incident from the first incident portion 10A.

[0102] That is, these 1st, 2nd and 3rd reflecting surfaces 19a, 19b, 19c are formed by the inclined surfaces of the concave prism formed on the lower surface of the extension portion 16B. In addition, the 1st, 2nd and 3rd reflecting surfaces 19a, 19b, 19c are formed by inclined surfaces inclined in various directions with the optical axis of the light L1 incident from the 1st incident portion 10A as the center.

[0103] In the first reflecting portion 11A constituting the second light guiding lens portion 8B, the first light L11 incident on the first incident portion 10A and incident on the first reflecting surface 19a is reflected toward the back side of the extension portion 16B, the second light L12 incident on the second reflecting surface 19b is reflected toward the front side of the extension portion 16B, and the third light L13 incident on the third reflecting surface 19c is reflected toward the back side of the light guiding portion 12.

[0104] In addition, the first reflecting portion 11A constituting the second light guiding lens portion 8B includes: a fourth reflecting surface 19d that reflects the first light L11 reflected by the first reflecting surface 19a toward the back side of the light guiding portion 12; and a fifth reflecting surface 19e that reflects the second light L12 reflected by the second reflecting surface 19b toward the back side of the light guiding portion 12.

[0105] That is, the fourth and fifth reflecting surfaces 19d and 19e are formed by the side surfaces forming the contour of the extended portion 16B. The extended portion 16B has a shape defined by the fourth and fifth reflecting surfaces 19d and 19e on the upper side of the step portion 15.

[0106] like Figure 8 , Fig. 9 as well as Fig.11 As shown, the second reflecting portion 11B constituting the second light guiding lens portion 8B includes, on the lower side of the step portion 15: a first reflecting surface 19a inclined toward the back side of the extension portion 16B (light guiding body 9) with respect to the optical axis of the light L2 incident from the first incident portion 10B; a second reflecting surface 19c inclined toward the front side of the extension portion 16B (light guiding body 9) with respect to the optical axis of the light L2 incident from the first incident portion 10B; and a third reflecting surface 19c inclined toward the front end side (light guiding portion 12 side) of the extension portion 16B with respect to the optical axis of the light L2 incident from the first incident portion 10B.

[0107] That is, these 1st, 2nd and 3rd reflecting surfaces 19a, 19b, 19c are formed by the inclined surfaces of the concave prism formed on the lower surface of the extension portion 16B. In addition, the 1st, 2nd and 3rd reflecting surfaces 19a, 19b, 19c are formed by inclined surfaces inclined in various directions with the optical axis of the light L2 incident from the second incident portion 10B as the center.

[0108] In the second reflecting portion 11B constituting the second light guiding lens portion 8B, the fourth light L21 incident on the first reflecting surface 19a among the light L2 incident from the second incident portion 10B is reflected toward the back side of the extension portion 16B, the fifth light L22 incident on the second reflecting surface 19b is reflected toward the front side of the extension portion 16B, and the sixth light L23 incident on the third reflecting surface 19c is reflected toward the back side of the light guiding portion 12.

[0109] In addition, the second reflecting portion 11B constituting the second light guiding lens portion 8B includes: a fourth reflecting surface 19d that reflects the fourth light L21 reflected by the first reflecting surface 19a toward the back side of the light guiding portion 12; and a fifth reflecting surface 19e that reflects the fifth light L22 reflected by the second reflecting surface 19b toward the back side of the light guiding portion 12.

[0110] That is, the fourth and fifth reflecting surfaces 19d and 19e are formed by the side surfaces forming the contour of the extended portion 16B. The extended portion 16B has a shape defined by the fourth and fifth reflecting surfaces 19d and 19e on the lower side of the step portion 15.

[0111] The light guide portion 12 is a portion for guiding the light L1 and L2 reflected by the first and second reflecting portions 11A and 11B, and has a shape in which the back side is inclined toward the front side from the base end side thereof toward the front end side. In addition, the inclined surface on the back side of the light guide portion 12 is located at a position where the light L1 and L2 are incident on the front end side of the extension portions 16A and 16B.

[0112] The light guide portion 12 guides the light L1 and L2 reflected by the first and second reflection portions 11A and 11B inside, and emits the light L1 and L2 reflected by the light guide reflection portion 13 provided on the back side thereof to the outside from the emission portion 14 on the front side thereof.

[0113] The light guide reflecting portion 13 is composed of a plurality of reflecting cutouts, and the plurality of reflecting cutouts reflect the light L1 and L2 incident on the back side of the light guide portion 12 at an angle less than the critical angle relative to the front side of the light guide portion 12. In addition, there is no particular limitation on the shape, size, number, etc. of the plurality of reflecting cutouts. For example, the light guide reflecting portion 13 of the present embodiment is formed by periodically arranging roughly V-shaped grooves formed by cutting the back side of the light guide portion 12 in the up-down direction as a plurality of reflecting cutouts. In addition, the light guide reflecting portion 13 may also be formed by a smooth reflecting surface of the inclined surface on the back side of the light guide portion 13 where there is no reflecting cutout on which the light L1 and L2 are incident.

[0114] Furthermore, the lamp unit 2 may be provided with a reflector facing the back surface of the light guide 12. Thus, light emitted from the back surface of the light guide 12 to the outside can be reflected by the reflector and incident again from the back surface of the light guide 12 to the inside.

[0115] The light-emitting portion 14 of the first light-guiding lens portion 8A and the second light-guiding lens portion 8B constitutes a continuous light-emitting portion 14A that is continuous in the vehicle width direction. The continuous light-emitting portion 14A is formed of a plane. In the lamp unit 2, the continuous light-emitting portion 14 can emit light in a linear manner as a light-emitting portion by the light L1 and L2 emitted from the continuous light-emitting portion 14.

[0116] In addition, the continuous emission portion 14A may be formed into a shape that is inclined or curved in at least the following direction, matching the inclined shape given to the corner portion of the front end side of the vehicle: the direction is a direction in which the outer side in the vehicle width direction retreats further than the inner side in the vehicle width direction.

[0117] In the vehicle lamp 1 of the present embodiment having the above-described structure, even when the lights L1 and L2 emitted from the adjacent first light source 7A and second light source 7B are incident on the light guide 9 from different positions, the lights L1 and L2 can be emitted from the same position of the light guide 9 .

[0118] Therefore, in the vehicle lamp 1 of this embodiment, when the emission of light L1 and light L2 is switched between the first light source 7A and the second light source 7B having different colors, the position of the bright spot of each luminous color when the continuous emission portion 14A is viewed from the front side is prevented from shifting.

[0119] Furthermore, in the vehicle lamp 1 of the present embodiment, at the innermost side in the vehicle width direction, in the first light guide lens portion 8A, the first light L11 incident on the sixth reflection surface 19f of the first reflection portion 11A is reflected toward the front side of the light guide portion 12, and the fifth light L22 incident on the second reflection surface 19b of the second reflection portion 11B is reflected toward the front side of the light guide portion 12. In addition, the extension portion 16B of the second light guide lens portion 8B is located behind the first light guide lens portion 8A.

[0120] In the case of this structure, compared with the case where all the light-guiding lens portions are set to the above-mentioned second light-guiding lens portions 8B, the light-emitting area of ​​the emission portion 14A can be expanded on the inner side in the vehicle width direction. Therefore, in the vehicle lamp 1 of the present embodiment, by arranging the first light-guiding lens portion 8A on the inner side in the vehicle width direction and arranging the second light-guiding lens portion 8B on the outer side in the vehicle width direction, the continuous emission portion 14A can emit light uniformly in the entire area in the vehicle width direction. In addition, the second light-guiding lens portion 8B and the light-guiding portion 12 located on the outer side in the vehicle width direction are not limited to one, and there may be multiple in one light guide body 9, and they may also be continuously formed as a whole.

[0121] In addition, the present invention is not necessarily limited to the above-mentioned embodiment, and various modifications can be added without departing from the scope of the present invention.

[0122] For example, in the above-mentioned embodiment, as the vehicle lamp 1 mounted on the two corners on the front end side of the vehicle, a lamp consisting of a position lamp and a turn signal lamp that combines a vehicle width lamp (position lamp) emitting white light and a direction indicator (turn signal lamp) that flashes with orange light is exemplified, but as a vehicle lamp mounted on the two corners on the rear end side of the vehicle, the present invention can also be applied to a lamp consisting of a tail lamp and a turn signal lamp that combines a tail lamp (tail lamp) emitting red light and a direction indicator (turn signal lamp) that flashes with orange light.

[0123] In addition, according to the laws and regulations of each country, while the turn signal lamp is flashing (lighting), the position lamp or the tail lamp can be kept lit, or the position lamp or the tail lamp can be turned off.

[0124] In addition, in the above-mentioned embodiment, the case of using the first light source 7A and the second light source 7B with different colored lights is illustrated, but the present invention can also be applied to a vehicle lamp using the first light source 7A and the second light source 7B with the same colored lights. In addition, it is possible to switch to light only one of the first light source 7A and the second light source 7B or to light both of them.

[0125] In addition, with respect to vehicle lamps to which the present invention can be applied, when using the first light source 7A and the second light source 7B with the same color light, for example, the present invention can be widely applied to vehicle lamps such as vehicle headlights (headlights), vehicle width lights (position lights), auxiliary headlights (sub-headlights), front (rear) fog lights (fog lamps), daytime running lights (DRLs), hood lights, tail lights (tail lamps), brake lights (stop lights), reversing lights, and turn indicators (turn indicator lights).

[0126] In addition, as for the first light source 7A and the second light source 7B, any light source that emits light in a radial shape may be used, and in addition to the LED, light emitting elements such as laser diodes (LD) may be used. In addition, the color of the light emitted by the light emitting element may be appropriately changed to white light, red light, orange light, etc. according to its use.

[0127] In addition, in the above-mentioned vehicle lamp 1, the first incident portion 10A and the first reflecting portion 11A, and the second incident portion 10B and the second reflecting portion 11B of the light guide 9 are arranged at different height positions via the step portion 15 corresponding to the first light source 7A and the second light source 7B adjacent to each other, but such a structure can also be set as a structure unit and set to a structure with multiple steps. For example, when the number of light sources is set to 3, it can be configured so that the step portion 15 is set to 2 levels, and the incident portion and the reflecting portion corresponding to each light source are arranged at different height positions.

[0128] In addition, in the above-mentioned vehicle lamp 1, the case where the above-mentioned light guide body 9 is used is exemplified, but the shape of the above-mentioned light guide body 9 can be appropriately changed in accordance with the actual vehicle design, etc. For example, the above-mentioned light guide body 9 is a structure including the above-mentioned one first light guide lens portion 8A and one light guide lens portion 8B, but the number and order of arrangement of these first and second light guide lens portions 8A and 8B can be appropriately changed.

[0129] Description of symbols

[0130] 1…Vehicle lamp 2…Lamp unit 3…Casing 4…Lens cover 5…Lamp body 6…Outer lens 7A…First light source 7B…Second light source 8A…First light guide lens portion 8B…Second light guide lens portion 9…Light guide body 10A…First incident portion 10B…Second incident portion 11A…First reflection portion 11B…Second reflection portion 12…Light guide portion 13…Light guide reflection portion 14…Outgoing portion 14A…Continuous outgoing portion 15…Step portions 16A, 16B…Extension portion 19a…First reflection surface 19b…Second reflection surface 19c…Third reflection surface 19d…Fourth reflection surface 19e…Fifth reflection surface 19f…Sixth reflection surface L1…White light L2…Orange light L11…First light L12…Second light L13…Third light L21…Fourth light L22…Fifth light L23…Sixth light L1

Claims

1. A vehicle lamp, comprising: a first light source and a second light source adjacent to each other; and a light guide that guides the light from the first light source and the light from the second light source in the same direction, The light guide has: A first incident portion and a second incident portion, which are respectively arranged opposite to the first light source and the second light source, and the light emitted from the first light source and the second light source is incident on the inside of the first incident portion and the second incident portion; a first reflecting portion and a second reflecting portion, which are respectively arranged opposite to the first incident portion and the second incident portion, and reflect the light incident from the first incident portion and the second incident portion; a light guide portion for guiding the light reflected by the first reflecting portion and the second reflecting portion; a light guide reflector disposed on the back side of the light guide and reflecting the light reflected by the first reflector and the second reflector toward the front side of the light guide; as well as an emission portion, which is arranged on the front side of the light guide portion and emits the light reflected by the light guide reflection portion to the outside, The second light source, the second incident portion, and the second reflecting portion are located closer to the light guide portion than the first light source, the first incident portion, and the first reflecting portion. A step portion is provided between the first reflecting portion and the second reflecting portion, When viewed from the first incident portion and the second incident portion, the first reflecting portion is located above the step portion, and the second reflecting portion is located below the step portion. The first reflecting portion includes: a first reflecting surface inclined toward the back side of the light guide relative to the optical axis of the light incident from the first incident portion; a second reflecting surface inclined toward the front side of the light guide relative to the optical axis of the light incident from the first incident portion; and a third reflecting surface inclined toward the light guide relative to the optical axis of the light incident from the first incident portion. Among the light incident from the first incident portion, the first light incident on the first reflection surface is reflected toward the back side of the light guide, the second light incident on the second reflection surface is reflected toward the front side of the light guide, and the third light incident on the third reflection surface is reflected toward the back side of the light guide portion. The first reflecting portion includes: a fourth reflecting surface that reflects the first light reflected by the first reflecting surface toward the back side of the light guide portion; and a fifth reflecting surface that reflects the second light reflected by the second reflecting surface toward the back side of the light guide portion. The first reflecting portion includes a sixth reflecting surface configured to reflect a portion of the first light reflected by the fourth reflecting surface toward a front side of the light guiding portion.

2. The vehicle lamp according to claim 1, wherein: The sixth reflecting surface has a light diffusing shape that reflects while diffusing the first light incident on the sixth reflecting surface.

3. The vehicle lamp according to claim 1, wherein: The second reflecting portion includes: a first reflecting surface, which is inclined toward the back side of the light guide relative to the optical axis of the light incident from the second incident portion; a second reflecting surface, which is inclined toward the front side of the light guide relative to the optical axis of the light incident from the second incident portion; and a third reflecting surface, which is inclined toward the light guide portion side relative to the optical axis of the light incident from the second incident portion.

4. The vehicle lamp according to claim 3, wherein: Among the light incident from the second incident portion, the fourth light incident on the first reflecting surface is reflected toward the back side of the light guide, the fifth light incident on the second reflecting surface is reflected toward the front side of the light guide, and the sixth light incident on the third reflecting surface is reflected toward the back side of the light guide portion.

5. The vehicle lamp according to claim 4, wherein: The second reflecting surface has a light diffusing shape that reflects while diffusing the fifth light incident on the second reflecting surface.

6. The vehicle lamp according to claim 4 or 5, wherein: The second reflecting portion includes: a fourth reflecting surface that reflects the fourth light reflected by the first reflecting surface toward the back side of the light guiding portion; and a fifth reflecting surface that reflects the fifth light reflected by the second reflecting surface toward the back side of the light guiding portion.

7. The vehicle lamp according to any one of claims 1, 2, 4 and 5, wherein: The first light source and the second light source emit light of different colors.

8. The vehicle lamp according to any one of claims 1, 2, 4 and 5, wherein: The light guide body has a plurality of light guide lens portions, each of which includes the first incident portion and the second incident portion, the first reflection portion and the second reflection portion, the light guide portion, the light guide reflection portion, and the emission portion. The plurality of light guide lens portions are arranged in a vehicle width direction, the adjacent light guide portions are formed integrally with each other, and the respective emission portions constitute continuous emission portions.

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