Vehicle lighting

Abstract

In vehicle lighting fixtures equipped with a light guide, the design effect is enhanced by preventing the point light phenomenon when the lights are on. [Solution] This is a vehicle lighting device comprising a lamp unit 1 having a light source 2 and a light guide 3 that guides and emits light from the light source 2. The light guide 3 comprises a light source light guide section 31 that guides light from the light source 2 in the longitudinal direction, and a plate-shaped emission light guide section 32 that emits the light guided from the light source light guide section 31 from its end surface. The light source light guide section 31 comprises a first light source light guide section 31F into which light from the light source 2 is incident, and a second light source light guide section 31S that is connected to the first light source light guide section 31F via a connecting section 31C and guides the light to the emission light guide section 32. The first light source light guide section 31F and the second light source light guide section 31S are connected at a required angle φ with respect to the plate surface direction of the emission light guide section 32.

Description

Technical Field

[0001] The present invention relates to a vehicle lamp that lights up in a linear light emission pattern using a light guide, and particularly to a vehicle lamp with enhanced aesthetic design effects during lighting.

Background Art

[0002] As a lamp such as a tail lamp of an automobile, a lamp using a light guide has been proposed. In Patent Document 1, a rod-shaped light guide part that guides the light of a light source and a plate-shaped light emitting part connected to the light guide part are integrally formed of a translucent member, and a lamp that emits light from an emission surface provided on the light emitting part is proposed. In this lamp, when lit, a linear (line-shaped) light emission pattern is formed by emitting light from the end face of the light emitting part. Alternatively, as a technology different from Patent Document 1, there is also one in which a light emission pattern of a desired shape is formed by emitting light from an emission step region provided on the surface (plate surface) of the light emitting part. By forming such a light emission pattern, a lamp with high aesthetic design effects during lighting can be obtained.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] The luminaire in Patent Document 1 has a configuration in which light is incident from both ends of the light source. Therefore, in areas far from the incident points, the brightness may decrease due to attenuation during light guidance, which poses a challenge in forming a uniform, linear light emission pattern. On the other hand, Patent Document 2 is a technology in which incident points are provided at multiple locations on the light guide, and light is incident from each of the multiple incident points. In this technology, the effects of attenuation in each light can be mitigated, which is effective in obtaining a uniform light emission pattern. Furthermore, by controlling the brightness and timing of the light incident on the multiple incident points, animation and sequential light emission can be performed.

[0005] However, in the technology described in Patent Document 2, some of the light incident on multiple inlet parts is guided directly to the outlet part without being guided through the light guide part, and is emitted from the outlet part. In this way, light emitted linearly without being guided through the light guide part causes a point light phenomenon in which a part of the line-shaped light emission pattern formed when the lamp is lit becomes a region with higher brightness than the rest. Therefore, it is difficult to form a line-shaped light emission pattern with uniform brightness, and there is room for improvement in the aesthetic design effect of the light fixture when it is lit.

[0006] The object of the present invention is to provide a vehicle lighting fixture equipped with a light guide that prevents the point light phenomenon in the light emission pattern when lit, thereby enhancing the aesthetically pleasing design effect. [Means for solving the problem]

[0007] The present invention relates to a vehicle lamp unit comprising a light source and a light guide that guides the light from the light source and emits the guided light, illuminating the front of the lamp. The light guide comprises a light source light guide section that guides the light from the light source in the longitudinal direction, and an emission light guide section that is connected to the light source light guide section, is formed in a plate shape that extends along the longitudinal direction of the light source light guide section, and emits the light guided from the light source light guide section from its end surface. The light source light guide section comprises a first light source light guide section into which the light from the light source is incident, and a second light source light guide section that is connected to the first light source light guide section via a connecting section and guides the light from the first light source light guide section to the emission light guide section. Furthermore, the first light source light guide section and the second light source light guide section are connected at a required angle with respect to the plate surface direction of the emission light guide section.

[0008] In the present invention, at least one light incident section is connected to the first light source light guide section, and the light incident section and the connection section to the first light source light guide section are arranged in a straight line, with the direction of this straight line arrangement set at a required angle with respect to the direction of the plate surface of the light output light guide section. In this configuration, the end face of the light incident section is configured as the incident surface, and the light from the light source is incident on the incident surface in the direction of the straight line arrangement. Furthermore, the light incident section comprises a plurality of light incident sections connected at required intervals along the length direction of the first light source light guide section, and these plurality of light incident sections are arranged on the same plane.

[0009] In the present invention, the first light source guide and the second light source are formed in the shape of a circular rod having a required diameter, and the connecting portion is formed in the shape of a narrow plate provided between the first light source guide and the second light source guide. Furthermore, it is preferable that the connecting portion is formed with a plate thickness smaller than its diameter. In addition, it is preferable that the required angle is such that the connecting portion does not exist within a region virtually extended from the plate thickness of the light emission guide toward the second light source guide. [Effects of the Invention]

[0010] According to the present invention, the first light source guide section into which light from the light source is incident, and the second light source guide section connected to the first light source guide section via a connecting section and guiding the light to the output light guide section, are connected at a required angle with respect to the plate surface direction of the output light guide section. As a result, the light emitted linearly from the light source loses its directionality when guided through the first light source guide section, the connecting section, and the second light source guide section, preventing the occurrence of point light phenomena in the light emission pattern and enhancing the aesthetic design effect. [Brief explanation of the drawing]

[0011] [Figure 1] A conceptual perspective view of an automobile equipped with a rear lamp, which is a vehicle lighting device of the present invention. [Figure 2] A schematic perspective view showing a portion of the taillight broken off. [Figure 3] A schematic cross-sectional view of the rear lamp. [Figure 4] A schematic perspective view showing the main components of the rear lamp disassembled. [Figure 5] A schematic perspective view of the lamp unit. [Figure 6] A schematic plan view of the lamp unit. [Figure 7] Enlarged longitudinal section view along AA in Figure 6. [Figure 8] A schematic diagram illustrating the light emission pattern of the lamp unit in the reference example. [Figure 9] A schematic diagram illustrating the light emission pattern of a lamp unit in another reference example. [Figure 10] A schematic diagram illustrating the light emission pattern of the lamp unit according to the embodiment. [Figure 11] A schematic diagram illustrating the light emission pattern of the lamp unit according to the embodiment. [Figure 12] A schematic diagram illustrating the angle of inflection. [Modes for carrying out the invention]

[0012] Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an external view of an automobile CAR equipped with a rear lamp (rear taillight) RL to which the present invention is applied. The rear lamp RL is provided as a left rear lamp L-RL and a right rear lamp R-RL on the left and right sides of the rear part of the vehicle body of the automobile CAR, and is composed of a fixed-side rear lamp S provided on a part of the rear fender of the vehicle body and a movable-side rear lamp M provided on the trunk lid.

[0013] When the fixed-side rear lamp S and the movable-type rear lamp M are lit, as shown in FIG. 1, two line-shaped light-emitting patterns LP arranged vertically and extending in a substantially horizontal direction (left-right direction) are formed. In this embodiment, the upper and lower line-shaped light-emitting patterns of the fixed-side rear lamp S and the movable-type rear lamp M, that is, the four line-shaped light-emitting patterns LP function as a tail lamp TL when lit. The lower line light-emitting pattern LP of the fixed-side rear lamp S is configured to also function as a turn signal lamp TSL when lit, and the lower line light-emitting pattern LP of the movable-side rear lamp M is configured to also function as a back lamp BL when lit.

[0014] FIG. 2 is a schematic perspective view of a part of the movable-side rear lamp M broken, and FIG. 3 is a schematic perspective view of the main part disassembled. Since the configuration of the fixed-side rear lamp S is basically the same, hereinafter, the movable-side rear lamp M will be described. Note that the rear lamp RL may be simply referred to as including both the movable-side rear lamp M and the fixed-side rear lamp S. Also, hereinafter, the front-rear direction is referred to as the front direction in which light is emitted from the rear lamp RL.

[0015] The lamp housing 100 of the movable-side rear lamp M is attached to a part of the outer surface of the trunk lid of the automobile CAR shown in FIG. 1, and is composed of a lamp body 101 opened toward the rear of the automobile CAR and a translucent colorless outer lens 102 attached to close the opening of the lamp body 101. This outer lens 102 is formed in a curved surface shape curved along the outer surface of the trunk lid.

[0016] And within this lamp housing 100, two lamp units 1 arranged vertically and an extension 103 disposed on the front side of this lamp unit 1 are provided. FIG. 4 is a schematic longitudinal sectional view, and the two lamp units 1 are arranged vertically at a position closer to the rear within the lamp housing 100. Also, the extension 103 is disposed on the front side of these lamp units 1.

[0017] Each of the upper and lower lamp units 1 has basically the same configuration. FIG. 5 is a schematic perspective view of one lamp unit 1, FIG. 6 is a schematic plan view, and FIG. 7 is an enlarged longitudinal sectional view taken along the line A - A of FIG. 6. The lamp unit 1 is composed of a light source part 2 and a light guide 3. The light guide 3 may also be referred to as an inner lens corresponding to the outer lens 102. This light guide 3 includes a light source light guide part 31 that guides the light of the light source 2 in the longitudinal direction, and an emission light guide part 32 that is connected to the light source light guide part 31 and emits the light guided by the light source light guide part 31 to form a linear light emission pattern.

[0018] The light source light guide part 31 includes two rod - shaped first light source light guide parts 31F and second light source light guide parts 31S having a circular cross - sectional shape with a required thickness and a required length. The first light source light guide part 31F and the second light source light guide part 31S are arranged in parallel with a required gap therebetween, and are integrally connected at a part of the circumference of both light source light guide parts 31F, 31S by a narrow - width plate - shaped connecting part 31C provided in this gap. The plate - thickness dimension of this connecting part 31C is set to be shorter than the diameter dimensions of each light source light guide part 31F, 31S.

[0019] The first light source light guide section 31F has multiple light incident sections 311 to 314 integrally formed along its length at required intervals. These light incident sections 311 to 314 are formed with substantially the same cross-sectional shape as the first light source light guide section 31F, and are connected at one end to the first light source light guide section 31F in a branched shape at a required angle with respect to the extension direction of the first light source light guide section 31F. The four light incident sections 311 to 314 are arranged on substantially the same plane, and the angle at which they are connected to the first light source light guide section 31F is acute with respect to the extension direction of the first light source light guide section 31F, but it may be an angle close to a right angle. In addition, the required angles in each light incident section 311 to 314 may be equal or different. The end faces of the other ends of each light incident section 311 to 314 are formed as flat surfaces and are configured as incident surfaces.

[0020] On the other hand, the second light source light guide section 31S has an emitted light guide section 32 connected to a part of the circumference approximately opposite to the connecting section 31C. The emitted light guide section 32 extends for a required length along the extension direction of the second light source light guide section 31S and is formed as a flat plate with a required thickness that protrudes in a direction intersecting the extension direction with a required protrusion dimension. This flat plate portion is configured as a plate surface section 321, and the end face at the tip of the protruding end of this plate surface section 321 is configured as an end face section 322. The end face of this end face section 322 is formed as a narrow flat surface, but if the surface of the trunk lid is curved, it may be formed as a curved surface that follows the curved surface. The light guide body 3 is made of a translucent resin, glass, or the like.

[0021] As will be explained in more detail later, in each of the light incident sections 311 to 314, as shown in Figure 7, the light incident sections 311 to 314, the first light source guide section 31F, the connecting section 31C, and the second light source guide section 31S are arranged linearly along a virtual vertical line passing through the center of the light-emitting surface of the corresponding LEDs 211 to 214. The direction of this linear arrangement and the direction in which the output light guide section 32 connected to the second light source guide section 31S extends, i.e., the direction of the plate surface of the output light guide section 32, intersect at a required angle φ (φ ≠ 180 degrees). In other words, for each of the light incident sections 311 to 314, the output light guide section 32 is bent at a bending angle φ in the direction of the plate surface of the output light guide section 32, with reference to the cross-sectional center of the second light source guide section 31S.

[0022] Furthermore, an optical control unit 4 is formed in the boundary region between the emission light guide unit 32 and the second light source light guide unit 31S. This optical control unit 4 is composed of a plurality of control recesses 41 formed at required intervals along the extension direction of the second light source light guide unit 31S. Each of these control recesses 41 is formed in a required planar shape, in this case triangular, and is configured as a recess recessed to a required depth from the back side of the emission light guide unit 32. This optical control unit 4 may be the same as the configuration described in Patent Document 1.

[0023] The light source unit 2 is equipped with a frame 20 that is processed in a four-step, stepped manner, corresponding to the four light incident sections 311 to 314, and this frame 20 supports the light guide 3. The four steps 201 to 204 of the frame 20 are each positioned facing the respective incident surfaces of the four light incident sections 311 to 314. Each step 201 to 204 is equipped with an LED (light-emitting diode) 211 to 214 as a light source. Each LED 211 to 214 is powered and emits light when the lamp unit 1 functions as a tail lamp TL, and the emitted red light is directed onto the respective incident surfaces of the light incident sections 311 to 314.

[0024] In the rear lamp RL with the above configuration, as shown in the cross-sectional structure in Figure 3, the light-emitting guide sections 32 of the two lamp units 1 are exposed to the front side of the extension 103 through two openings 104 of the extension 103, which is located on the front side. On the other hand, the light source section 2 and the light source guide section 31 of the lamp unit 1 are hidden behind the extension 103.

[0025] When the rear lamp RL is illuminated, each LED 211-214 emits light, and the light emitted from each LED 211-214 is incident on the respective incident surfaces of the opposing light incident sections 311-314. The light incident on the light incident sections 311-314 is guided in the longitudinal direction within the first light source light guide section 31F. The light guided through this first light source light guide section 31F is guided to the second light source light guide section 31S via the connecting section 31C, and is guided in the longitudinal direction within this second light source light guide section 31S to the exit light guide section 32. The light guided to the exit light guide section 32 is internally reflected by the plate surface section 321 and guided toward the tip, finally being guided to the end surface section 322. The light guided to the end surface section 322 is emitted from the end surface section 322 and further emitted after passing through the outer lens 102. As a result, the rear lamp RL emits light in a line-shaped light pattern LP that extends in the left-right direction.

[0026] At this time, as shown in the schematic optical path in Figure 7, when the light incident on the light incident sections 311-314 from the LEDs 211-214 is guided from the first light source light guide section 31F to the connecting section 31C, the guidance of some of the light is restricted by the connecting section 31C. In other words, the guidance of the light that is guided away from the connecting section 31C from the light emitted vertically from the center of the light-emitting surface of the LEDs 211-214, which have relatively high light intensity, and the light in a required angular region including this light (hereinafter referred to as central light), is restricted. This restricted light is internally reflected by the first light source light guide section 31F, and the direction of light guidance is changed.

[0027] On the other hand, the light from the central light that is not restricted by the connecting portion 31C is guided to the second light source guide portion 31S. However, due to the bent configuration of the second light source guide portion 31S, some of the light is transmitted to the outside, and the rest is internally reflected by the second light source guide portion 31S and guided to the output light guide portion 32. As a result, the high-luminosity central light is not guided to the output light guide portion 32 while maintaining its straight path and is guided to the end face portion 322, thereby suppressing the point light phenomenon in the line-shaped light emission pattern LP.

[0028] This section describes a simulation example of the appearance of the linear light emission pattern LP when the rear lamp RL is lit, i.e., the point light phenomenon. Figure 8 shows a schematic diagram of the lamp unit example from the reference example. In the reference example, the light source section 31 is assumed to be a single light source light guide section 31A, and the light incident sections 311A ​​to 314A are formed in a direction parallel to the plate surface direction of the light emission guide section 32A. In Figure 8, (a) is a schematic plan view of the lamp unit, (b) is the light intensity (brightness) at the four light incident sections 311A ​​to 314A, (c) is the light intensity at the end face section 322, and (d) is a schematic diagram of the appearance of the linear light emission pattern LP formed at the end face section 322.

[0029] In this configuration, the amount of light incident from LEDs 211A (~214A) to the light incident section 311A~314A and guided from the light source light guide section 31A to the light output light guide section 32 is highest at the point where the light incident section 311A~314A is connected to the light source light guide section 31A, i.e., the point where the central light is guided, as shown in Figure 8(b). This central light is guided from the light incident section 311A~314A to the light source light guide section 31A, and further guided straight through the light output light guide section 32 to the end face section 322. Therefore, as shown in Figure 8(c), the brightness of the point where the straight-traveling central light is guided is higher than elsewhere. As a result, as shown in Figure 8(d), a so-called point light phenomenon occurs where some or more points along the length of the line-shaped light emission pattern LP have increased brightness in a point-like manner.

[0030] Therefore, another reference example shown in Figure 9 is one in which the light incident sections 311A ​​to 314A shown in Figure 8 are connected to the light source light guide section 32 at a required angle φ with respect to the plate surface direction of the light exit light guide section 32, as shown in Figure 9(a). In this example, the central light incident from LED 211A (~214A) to the light incident sections 311A ​​to 314A is internally reflected in the light source light guide section 31A and directed towards the light exit light guide section 32. Since the inner surface of the light source light guide section 31A is cylindrical, most of the central light is guided to the light exit light guide section 32, making it difficult to suppress the point light phenomenon in the line-shaped light emission pattern LP, as shown in Figures 9(b), (c), and (d).

[0031] On the other hand, Figure 10 is a schematic diagram of the embodiment, and as also shown in Figure 7, the first light source light guide section 31F and the second light source light guide section 31S are connected by a connecting section 31C with a small thickness, as shown in Figure 10(a). Furthermore, the direction in which the first light source light guide section 31F is connected to the second light source light guide section 31S via the connecting section 31C and the direction in which the output light guide section 32 connected to the second light source light guide section 31S is bent at a required angle φ with respect to the plate surface direction of the output light guide section 32. Note that in this embodiment, the light control unit 4 is not included.

[0032] In this configuration, light incident on the light incident sections 311-314 is incident on the first light source light guide section 31F and guided along its length. At this time, the high-luminosity central light emitted from LEDs 211-214 is guided to the second light source light guide section 31S through the connecting section 31C. However, since the thickness of the connecting section 31C is smaller than the diameter of both light source light guide sections 31F and 31S, the amount of light guided is suppressed. At the same time, some divergence or diffusion occurs due to internal reflection at the connecting section 31C. As a result, the central light guided from the first light source light guide section 31F to the second light source light guide section 31S is suppressed.

[0033] The central light, whose light intensity is suppressed at the connecting section 31C, is guided from the second light source guide section 31S to the output light guide section 32. However, since the output light guide section 32 is bent at a bending angle φ in the plate thickness direction relative to the first light source guide section 31F and the connecting section 31C, the light is not directly guided towards the output light guide section 32. That is, a portion of the central light guided to the second light source guide section 31S is emitted to the outside at the circumferential surface of the second light source guide section 31S. The rest is internally reflected at the circumferential surface of the second light source guide section 31S, causing the light to diverge or diffuse before being guided to the output light guide section 32.

[0034] As a result, as shown in Figure 10(b), the central light guided from the light incident sections 311-314 toward the first light source guide section 31F and the second light source guide section 31S has its light intensity suppressed when it is guided toward the exit light guide section 32. Therefore, when the central light is guided toward the end face 322 of the exit light guide section 32, the light intensity becomes about the same as in other regions, as shown in (c), and a line-shaped emission pattern with uniform brightness and no point light phenomenon is obtained, as shown in (d).

[0035] Figure 11 shows an example of an embodiment that includes an optical control unit 4. The optical control of the optical control unit 4 is as described in Patent Document 1, but to briefly explain, the guided light is internally reflected on the three sides of the control recess 41, which is composed of a recess in a triangular prism. This internal reflection in the control recess 41 controls the angle of incidence when the light guided from the second light source light guide unit 31S to the output light guide unit 32 is incident on the end face 322. Therefore, it is possible to prevent the light about to be emitted from the end face 322 from exceeding the critical angle and thus reducing the light emission efficiency.

[0036] As a result, in the embodiment of Figure 11, similar to the embodiment of Figure 10, the point light phenomenon in the line-shaped light emission pattern LP can be prevented as shown in Figure 11(d). Furthermore, the light guided from the second light source light guide unit 31S to the output light guide unit 32 is guided uniformly toward the end face 322, and along with an increase in the brightness of the line-shaped light emission pattern LP, the brightness can be made even more uniform than in the embodiment of Figure 10.

[0037] Here, in order to improve the efficiency (suppression efficiency) of suppressing the guidance of straight-traveling light from the light source guide section 31 to the light output guide section 32, it is preferable to appropriately set the bending angle φ of the light source guide section 31 and the light output guide section 32. For example, in order to suppress the light that is guided directly from the central light source guide section 31F through the connecting section 31C to the second light source guide section 31S to the light output guide section 32, the bending angle φ is set such that the region of the connecting section 31C, shown by the diagonal lines, does not exist within the region X, which is virtually extended toward the second light source guide section 31S side by the plate thickness of the light output guide section 32, as shown by the dashed line in Figure 12. Therefore, this bending angle φ is set based on the plate thickness dimension of the light output guide section 32, the diameter dimension of the second light source guide section 31S, and the plate thickness dimension of the connecting section 31C.

[0038] In the present invention, the direction in which the light source light guide portion 31 is bent relative to the light output light guide portion 32 may be the opposite direction to that of the embodiment. That is, in the example of Figure 7, the light source light guide portion 31 may be bent upwards. Furthermore, the light source light guide portion and the light output light guide portion constituting the light guide body of the present invention are not limited to the shapes and structures described in the embodiment. In particular, it is preferable that the light output light guide portion has an end face portion for forming a line-shaped light emission pattern and a plate surface portion with a relatively large area.

[0039] In this embodiment, an example was shown in which both brightness unevenness and point light phenomena of a linear light emission pattern are suppressed simultaneously. However, if the primary focus is on suppressing point light phenomena, the light control unit may be omitted.

[0040] In this embodiment, the lamp is composed of two light guides, an upper and a lower one. However, it may be composed of one light guide, or three or more light guides. Furthermore, when the lamp is composed of multiple light guides, each light guide may be configured as a lamp with a different lamp function, such as a backup lamp, a turn signal lamp, or a brake light.

[0041] The lamps to which the present invention is applied are not limited to the tail lamps described in the embodiments, but can also be applied to indicator lights such as position lamps and marker lamps, and signal lights such as stop lamps and turn signal lamps. [Explanation of Symbols]

[0042] 1 Lamp Unit 2 Light source section 3. Light guide 4. Optical Control Unit 31 Light source light guide section 31F 1st light source light guide section 31S 2nd light source light guide section 31C connection 32 Output light guide section 41 Control recess 101 Lamp Body 102 Outer Lens 103 Extension 211~214 LED (light source) 311~314 Light incidence part 321 Plate surface part 322 End section RL Rear Lamp (Vehicle Lighting) CAR (automobile / vehicle) LP Linear Light Emission Pattern

Claims

1. A vehicle lamp unit comprising a light source and a light guide that guides the light from the light source and emits the guided light toward the front of the lamp, wherein the light guide comprises a light source light guide section that guides the light from the light source in the longitudinal direction, and an emission light guide section that is connected to the light source light guide section and formed in a plate shape that extends along the longitudinal direction of the light source light guide section, and emits the light guided from the light source light guide section from its end surface, wherein the light source light guide section comprises a first light source light guide section into which the light from the light source is incident, and a second light source light guide section that is connected to the first light source light guide section via a connecting section and guides the light from the first light source light guide section toward the emission light guide section, wherein the first light source light guide section and the second light source light guide section are connected at a required angle with respect to the plate surface direction of the emission light guide section.

2. The vehicle lamp according to claim 1, wherein at least one light incident portion is connected to the first light source light guide portion, the light incident portion, the first light source light guide portion, and the connecting portion are arranged in a straight line, and the direction of this straight line arrangement is set to the required angle with respect to the direction of the plate surface of the light output light guide portion.

3. The vehicle light fixture according to claim 2, wherein the end face of the light incident portion is configured as an incident surface, and the light from the light source is incident on the incident surface in the direction of the linear arrangement.

4. The vehicle light fixture according to claim 1, wherein the light incident section comprises a plurality of light incident sections connected at required intervals along the longitudinal direction of the first light source light guide section, and the plurality of light incident sections are arranged on the same plane.

5. The vehicle light fixture according to claim 1, wherein the first light source guide and the second light source are formed in the shape of a circular rod having a required diameter, and the connecting portion is formed in the shape of a narrow plate provided between the first light source guide and the second light source guide, and the connecting portion is formed in the shape of a plate with a thickness smaller than the diameter.

6. The vehicle lamp according to claim 1, wherein the required angle is an angle at which there is no connecting portion within the region obtained by virtually extending the plate thickness of the light-emitting light guide portion toward the second light source light guide portion.

7. The vehicle lamp according to claim 1, wherein the light-emitting light guide unit includes a light control unit in a boundary region connected to the second light source light guide unit, which controls the light guided from the second light source light guide unit toward the light-emitting light guide unit, and the light control unit includes a plurality of control recesses spaced apart along the length of the light source light guide unit and recessed to a required depth from the surface of the light-emitting light guide unit, and a portion of the light guided from the second light source light guide unit toward the light-emitting light guide unit is internally reflected at the side surface of the control recesses.

8. The vehicle lamp according to claim 1, wherein the light-emitting light guide portion forms a line-shaped light emission pattern with light emitted from the end face portion.

9. A vehicle light fixture according to any one of claims 1 to 8, configured as an indicator light or signal light for an automobile.

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