Lighting devices and vehicle lamps

Abstract

The present invention provides a lighting device and a vehicle lamp. The lighting device includes: a light-emitting device, a housing, a light guide rod, and a fixing member. The housing is provided with a mounting hole and a mounting groove connected to the mounting hole. The light guide rod is inserted into the mounting hole. One end of the light guide rod is a light-entering surface, and the other end is a light-emitting surface. The light-entering surface is opposite to the light-emitting device. Light emitted by the light-emitting device enters the light guide rod through the light-entering surface and exits from the light-emitting surface. The fixing member is installed in the mounting groove and is connected to an elastic component provided on the housing. The elastic component undergoes elastic deformation to enable the fixing member to fix the light guide rod. The fixing structure of the light guide rod of the present invention is simple, reliable, and has good stability.

Description

Technical Field

[0001] The present invention relates to the field of lighting technology, and in particular to a lighting device and a vehicle lamp. Background Art

[0002] Vehicle lighting is a significant factor influencing driving safety, and the development of the automotive industry is placing increasingly high demands on vehicle lighting. Tungsten filament lamps, a common light source for automotive lighting, are gradually being phased out due to their low brightness, high energy consumption, and short lifespan. To improve light source brightness and reduce energy consumption, researchers have begun developing an LED lighting device that simulates filament applications. This device couples light emitted by an LED into a rod-shaped light guide and emits it from the surface of the rod. This simulated filament LED lighting device shares the same luminous properties as a tungsten filament lamp, while offering advantages such as high brightness and long lifespan. Therefore, it can be used in automotive lighting applications in place of tungsten filament lamps.

[0003] Automotive lights are installed in vehicles and operate in harsh environments, requiring extremely high impact and vibration resistance. Compared to traditional automotive light sources such as tungsten filament lamps, the light-emitting device and light-guiding element of simulated filament LED lighting devices are separated, and the light-guiding element is long and strip-shaped. This results in poor structural stability. Vehicle vibrations can easily shift the relative position of the light-guiding element and light-emitting device, significantly affecting the light distribution of the vehicle lights. Summary of the Invention

[0004] The object of the present invention is to provide a lighting device to solve the above problems.

[0005] The lighting device provided by the present invention includes: a light-emitting device, a shell, a light guide rod and a fixing member; the shell is provided with a mounting hole and a mounting groove connected to the mounting hole; the light guide rod is inserted into the mounting hole, one end of the light guide rod is a light incident surface, and the other end is a light emitting surface, the light incident surface is opposite to the light-emitting device, and the light emitted by the light-emitting device enters the light guide rod through the light incident surface and is emitted from the light emitting surface; the fixing member is installed in the mounting groove, and the fixing member is connected to an elastic component provided on the shell, and the elastic component undergoes elastic deformation so that the fixing member fixes the light guide rod.

[0006] In one embodiment, the elastic component includes a connecting member and an elastic member, the connecting member is fixed in the mounting groove, one end of the elastic member is connected to the connecting member or the housing, and the other end is connected to the fixing member.

[0007] In one embodiment, the fixing member is provided with a through hole, a protrusion is provided in the through hole, the connecting member is a stepped screw, a screw hole matching the stepped screw is provided on the bottom surface of the mounting groove, the stepped screw passes through the through hole and is connected to the screw hole, the elastic member is sleeved on the stepped screw, one end of the elastic member is connected to the nut or shell of the stepped screw, and the other end is connected to the protrusion.

[0008] In one embodiment, a fixing groove is provided on a side of the fixing member facing the light guide rod, and a groove surface of the fixing groove abuts against the light guide rod.

[0009] In one embodiment, a gap is formed between the side surface of the fixing member facing the light guide rod and the bottom surface of the mounting groove.

[0010] In one embodiment, the number of the connecting members, the elastic members, the through holes and the screw holes are two, and the two connecting members, the two elastic members, the two through holes and the two screw holes are symmetrical about a plane passing through the axis of the light guide rod.

[0011] In one embodiment, the mounting groove is a threaded hole, the connecting piece is a stud, the fixing piece is sheet-shaped, the connecting piece is connected to the mounting groove via threads, and the elastic piece is disposed between the connecting piece and the fixing piece.

[0012] In one embodiment, the connecting member has a guide column extending axially, an annular groove is formed between the guide column and the side wall of the connecting member, the elastic member is a spring, and one end of the elastic member away from the fixing member is accommodated in the groove.

[0013] In one embodiment, the elastic member is an elastic rubber pad, and the elastic assembly further includes a protective member disposed between the connecting member and the elastic member.

[0014] In one embodiment, the lighting device further includes a substrate connected to the housing, and the light-emitting device is arranged on a side of the substrate facing the housing.

[0015] In one embodiment, the lighting device further includes a heat dissipation assembly disposed on a side of the substrate facing away from the housing. The heat dissipation assembly includes a radiator and a fan. The radiator has a plurality of heat dissipation fins arranged in an annular manner, and the fan is disposed between the plurality of heat dissipation fins.

[0016] The present invention also provides a vehicle lamp, comprising the above-mentioned lighting device.

[0017] Compared with the prior art, the lighting device provided by the present invention limits the light guide rod in the radial direction by installing the light guide rod in the mounting hole of the shell, and the fixing part and the elastic component are installed in the mounting groove. Since the mounting groove is connected to the mounting hole, a part of the side surface of the light guide rod is exposed in the mounting groove. Through the elastic deformation of the elastic component fixed on the shell, the fixing part connected to the elastic component presses the light guide rod to prevent the light guide rod from sliding in the axial direction. The fixing structure of the light guide rod is simple and reliable, has good stability, and is easy to process and assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 1 is a schematic diagram of the exploded structure of the lighting device according to the first embodiment of the present invention;

[0020] Figure 2 is a schematic structural diagram of a lighting device according to a first embodiment of the present invention;

[0021] Figure 3 Schematic diagram of the fixing structure of the light guide rod of the lighting device according to the first embodiment of the present invention;

[0022] Figure 4 1 is a schematic diagram of the stepped screw structure of the lighting device according to the first embodiment of the present invention;

[0023] Figure 5 1 is a schematic structural diagram of a heat dissipation module of a lighting device according to a first embodiment of the present invention;

[0024] Figure 6 2 is another schematic diagram of a fixing structure of the light guide rod of the lighting device according to the first embodiment of the present invention;

[0025] Figure 7 is a structural diagram of a lighting device according to a second embodiment of the present invention;

[0026] Figure 8 Schematic diagram of the fixing structure of the light guide rod of the lighting device according to the second embodiment of the present invention;

[0027] Figure 9 is a schematic structural diagram of a lighting device according to a third embodiment of the present invention;

[0028] Figure 10 Schematic diagram of the fixing structure of the light guide rod of the lighting device according to the third embodiment of the present invention;

[0029] Figure 11 Schematic diagram of the structure of the stud of the lighting device according to the third embodiment of the present invention. DETAILED DESCRIPTION

[0030] To facilitate understanding of the embodiments of the present invention, a more comprehensive description of the embodiments of the present invention will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0032] Example 1:

[0033] See Figure 1 and Figure 2 , Figure 1 and Figure 2 1 is a structural diagram of an illuminating device 100 provided in a first embodiment of the present invention. The illuminating device 100 includes a light-emitting device 101 , a housing 102 , a light guide rod 103 , a fixing member 104 , and an elastic component 105 .

[0034] The shell 102 is provided with a mounting hole and a mounting groove 1021 connected to the mounting hole. The light guide rod 103 is inserted into the mounting hole. One end of the light guide rod 103 is a light incident surface, and the other end is a light emitting surface. The light incident surface is opposite to the light emitting device 101. The light emitted by the light emitting device 101 enters the light guide rod 103 through the light incident surface and is emitted from the light emitting surface. The fixing part 104 is installed in the mounting groove 1021, and the fixing part 104 is connected to the elastic component 105 provided on the shell 102. The elastic component 105 undergoes elastic deformation so that the fixing part 104 fixes the light guide rod.

[0035] Compared with the prior art, the lighting device 100 provided by the present invention limits the light guide rod 103 in the radial direction by installing the light guide rod 103 in the mounting hole of the shell 102, and the fixing part 104 and the elastic component 105 are installed in the mounting groove 1021. Since the mounting groove 1021 is connected to the mounting hole, a part of the side surface of the light guide rod 103 is exposed in the mounting groove 1021. Through the elastic deformation of the elastic component 105 fixed on the shell, the fixing part 104 connected to the elastic component 105 presses the light guide rod 103 to prevent the light guide rod 103 from sliding in the axial direction. The fixing structure of the light guide rod is simple and reliable, has good stability, and is easy to process and assemble.

[0036] Specifically, in this embodiment, light-emitting device 101 is used to emit illumination light. Light-emitting device 101 can be a light-emitting diode (LED) or a laser diode (LD). Light-emitting device 101 provides the original illumination light for lighting device 100. The number of light-emitting devices 101 can be determined based on the brightness requirements of lighting device 100. For example, in one specific embodiment, lighting device 100 includes four LEDs that emit white light, arranged in a 2x2 matrix.

[0037] In this embodiment, the lighting device 100 further includes a substrate 106, on which the light-emitting device 101 is disposed. Since the light-emitting device 101 generates heat during operation, to ensure timely heat dissipation, the substrate 106 is preferably made of a material with good thermal conductivity, such as copper or aluminum. Furthermore, the lighting device 100 may also include a ceramic substrate, on which the light-emitting device 101 is mounted, which is then mounted on the substrate 106.

[0038] The housing 102 can be made of a metal material, such as aluminum or an aluminum alloy, to provide excellent structural stability and ease of processing. The housing 102 includes a mounting hole and a mounting groove 1021 communicating with the mounting hole. The mounting hole is used to mount the light guide rod 103, and the mounting groove 1021 is used to mount the fixing member 104 and the elastic component 105.

[0039] The light guide rod 103 is a transparent light-guiding component in the shape of a rod or a column. Specifically, it can be made of a transparent material such as transparent acrylic resin, polycarbonate (PC), polymethyl methacrylate (PMMA), glass or quartz. The light guide rod 103 has a high refractive index, thereby ensuring that light can be transmitted in the interior of the light guide rod 103 by total reflection. The light guide rod 103 is inserted into the mounting hole, and one end of the light guide rod 103 is the light entrance surface, and the other end is the light exit surface. The substrate 106 is connected to the housing 102 to fix the light-emitting device 101 and make the light entrance surface of the light guide rod 103 opposite to the light-emitting device 101. The light emitted by the light-emitting device 101 is coupled into the light guide rod 103 through the light entrance surface of the light guide rod 103. The light is transmitted in the interior of the light guide rod 103 by total reflection and emitted from the light exit surface of the light guide rod 103. The light emitting surface of the light guide rod 103 may be in a conical shape, a parabolic shape, a wedge shape or a groove shape, so that the light emitted from the light emitting surface of the light guide rod 103 can achieve a preset light distribution.

[0040] In this embodiment, the light-emitting surface of the light guide rod 103 may also be provided with a rough scattering structure. The white light emitted by the light-emitting device 101 is scattered when it reaches the scattering structure on the light-emitting surface after being conducted by the light guide rod 103, thereby achieving a wider light distribution. In other embodiments of the present invention, the light-emitting device 101 may also emit light of other colors. For example, in one specific embodiment, the light-emitting device 101 is a blue light LD, and a yellow fluorescent material is provided on the light-emitting surface of the light guide rod 103 to absorb part of the blue light and emit yellow light, so that the unabsorbed blue light and the emitted yellow light mix to form white light. In another specific embodiment, the light-emitting device 101 is a blue light LD, and the light guide rod 103 is a fluorescent ceramic, a rod-shaped structure formed by mixing and calcining aluminum oxide, phosphor, and a sintering aid. The blue light emitted by the light-emitting device 101 enters the interior of the fluorescent ceramic light guide rod 103, where part of the blue light is absorbed and emitted as yellow light. The unabsorbed blue light mixes with the emitted yellow light to form white light, which is emitted from the light-emitting surface of the light guide rod 103. The fluorescent ceramic light guide rod 103 has high thermal conductivity and high luminous efficiency. Preferably, the light emitting surface of the fluorescent ceramic light guide rod 103 has a rough scattering structure, thereby achieving a wider light distribution.

[0041] Please combine Figure 2 and Figure 3 , Figure 3 1 is a schematic diagram of the fixing structure of the light guide rod 103 of the lighting device 100 according to the first embodiment of the present invention. The mounting groove 1021 on the housing 102 is connected to the mounting hole. The light guide rod 103 is inserted into the mounting hole so that a portion of the side surface of the light guide rod 103 is exposed in the mounting groove 1021. The fixing member 104 and the elastic component 105 are installed in the mounting groove 1021. The fixing member 104 is made of a rigid metal material, such as steel, aluminum or a metal alloy. Since the fixing member 104 needs to be in direct contact with the light guide rod 103, the rigid fixing member 104 can avoid disrupting the complete transmission of light within the light guide rod 103. Reflection reduces light loss; the elastic component 105 includes a connecting member 1051 and an elastic member 1052, the connecting member 1051 is fixed in the mounting groove 1021, one end of the elastic member 1052 is connected to the connecting member 1051 or the shell 102, and the other end is connected to the fixing member 104. When the fixing member 104 tightens the light guide rod 103, the elastic member 1052 undergoes elastic deformation, and the generated elastic force acts on the fixing member 104, so that the fixing member presses the light guide rod to prevent the light guide rod from sliding along the axial direction.

[0042] Specifically, in this embodiment, the size of the diameter of the light guide rod 103 matches the size of the diameter of the mounting hole, that is, the size of the diameter of the mounting hole needs to be slightly larger than the size of the diameter of the light guide rod 103, so that the light guide rod 103 can be installed in the mounting hole and limited in the radial direction. The mounting groove 1021 includes a bottom surface and two side surfaces respectively connected to both sides of the bottom surface. The bottom surface and the two side surfaces of the mounting groove 1021 are both planar, and the bottom surface passes through the mounting hole, so that the mounting groove 1021 is connected to the mounting hole. In a specific embodiment of the present invention, the bottom surface of the mounting groove 1021 passes through the axis of the mounting hole, and the two side surfaces of the mounting groove 1021 are perpendicular to the axis of the mounting hole. The fixing member 104 is roughly block-shaped, and its size and shape match the mounting groove 1021, so that the fixing member 104 can be accommodated in the mounting groove 1021. Preferably, the outer surface of the fixing member 104 has the same curvature as the outer surface of the shell 1021.

[0043] The connecting piece 1051 is a stepped screw, such as Figure 4 As shown, the stepped screw 1051 includes a nut 1051a, a screw portion 1051b, and a threaded portion 1051c. The diameter of the nut 1051a is larger than the diameter of the screw portion 1051b, while the diameter of the threaded portion 1051c is smaller than the diameter of the screw portion 1051b. The outer surface of the threaded portion 1051c is provided with an external thread, and the bottom surface of the mounting groove 1021 is provided with a screw hole 1022 that mates with the threaded portion 1051c. The elastic member 1052 may be a spring that can be mounted on the screw portion 1051b of the stepped screw 1051. The spring can withstand a higher temperature and humidity range. In other embodiments, the elastic member 1052 may also be a cylindrical elastic ring made of an elastic material such as elastic rubber or elastic silicone, which can be mounted on the screw portion 1051b of the stepped screw 1051. In this embodiment, the elastic member 1052 is described as a spring.

[0044] A through hole 1041 is provided on the fixing member 104, and an annular protrusion 1043a is provided in the through hole 1041. The protrusion 1043a is arranged close to the outer surface of the fixing member 104, thereby dividing the through hole 1041 into a first section and a second section, wherein the first section is close to the outer surface of the fixing member 104, and the second section is the bottom surface of the mounting groove 1021. The aperture formed by the protrusion 1043a is smaller than the diameter of the nut 1051a and larger than the diameter of the screw portion 1051b, so that when the stepped screw 1051 passes through the through hole 10, the screw portion 1051b and the threaded portion 1051c of the stepped screw 1051 can pass through the hole formed by the protrusion 1043a, and the nut 1051a is accommodated in the first section of the through hole 1041 and clamped on the protrusion 1043a. The elastic member 1052 is sleeved on the screw portion 1051b of the stepped screw 1051 and is accommodated in the first section of the through hole 1041. As the threaded portion 1051c of the stepped screw 1051 is threadedly connected to the screw hole 1022 at the bottom surface of the mounting groove 1021, one end of the elastic member 1052 is connected to the housing 102, and the other end is connected to the protrusion 1043a on the fixing member 104. The elastic member 1052 undergoes elastic deformation, and the elastic force generated by the elastic member 1052 acts on the fixing member 104. Due to the reverse resistance of the nut 1051a against the fixing member 104, the fixing member 104 presses the light guide rod 103, thereby achieving axial fixation of the light guide rod 103 and preventing the light guide rod 103 from sliding along the axial direction.

[0045] In this embodiment, the number of connecting members 1051, elastic members 1052, through holes 1041, and screw holes 1022 on the bottom surface of the mounting groove 1021 is two each. The two connecting members 1051, the two elastic members 1052, the two through holes 1041, and the two screw holes 1022 on the bottom surface of the mounting groove 1021 are symmetrical about a plane passing through the axis of the light guide rod 103. This symmetrical arrangement ensures balanced forces on both sides of the axis of the light guide rod 103, thereby increasing the stability of the structure.

[0046] Furthermore, in order to ensure that the elastic member 1052 has a sufficient length and provides sufficient elastic force, the screw hole 1022 on the bottom surface of the mounting groove 1021 is stepped, and the screw hole 1022 includes a receiving section and a threaded section, wherein the diameter of the receiving section is larger than the diameter of the threaded section, and the inner side surface of the threaded section is provided with an internal thread matching the threaded portion 1051c of the stepped screw 1051, and the two are threadedly connected; the receiving section is used to receive the elastic member 1052, and the elastic member 1052 can be connected to the stepped surface between the receiving section and the threaded section. Such a setting can lengthen the length of the elastic member 1052, thereby providing sufficient elastic force, so that the fixing member 104 can firmly fix the light guide rod 103.

[0047] In this embodiment, a gap is provided between the side of the fixing member 104 facing the light guide rod 103 and the bottom surface of the mounting groove 1021. This gap can be between 0.01 mm and 2 mm. Providing a gap between the fixing member 104 and the bottom surface of the mounting groove 1021 not only ensures that the elastic member 1052 can undergo elastic deformation, but also provides a buffer space for the fixing member 104, preventing damage to the light guide rod 103 caused by the fixing member 104 when the lighting device 100 vibrates.

[0048] Furthermore, the fixing member 104 has a fixing groove 1042 on one side facing the light guide rod 103. The groove surface of the fixing groove 1042 abuts against the light guide rod 103 to limit the position of the light guide rod 103. The fixing groove 1042 can be rectangular, triangular, arc-shaped or other shapes.

[0049] Please refer to Figure 1 and Figure 5 The lighting device 100 also includes a heat sink assembly 107 disposed on the side of the substrate 106 facing away from the housing 102. The heat sink assembly 107 includes a heat sink and a fan 1072. The heat sink has a plurality of heat fins 1071 arranged in a ring shape, and the fan 1072 is disposed between the plurality of heat fins 1071, i.e., the fan 1072 is surrounded by the plurality of heat fins 1071. Heat generated by the light-emitting device 101 is transferred to the plurality of heat fins 1071 of the heat sink via the substrate 106, and the fan 1072 blows air to dissipate the heat. The heat sink assembly 107 is compact and small in size, and provides excellent heat dissipation.

[0050] Please refer to Figure 6 , Figure 6This is another schematic diagram of a fixing structure for the light guide rod of the lighting device according to Embodiment 1 of the present invention. Unlike the aforementioned fixing structure for light guide rod 103, in this fixing structure for light guide rod 103, a protrusion 1043b is positioned within through hole 1041 on fixing member 104, close to fixing member 104 and facing toward light guide rod 103, thereby positioning elastic member 1052 between nut 1051a of stepped screw 1051 and protrusion 1043b. Preferably, protrusion 1043b is positioned at the inner end of through hole 1041. Specifically, the aperture formed by protrusion 1043b is larger than the diameter of screw portion 1051b, enabling screw portion 1051b and threaded portion 1051c to pass through the aperture formed by protrusion 1043b. The elastic member 1052 is sleeved on the screw portion 1051b of the stepped screw 1051, so that the threaded portion 1051c of the stepped screw 1051 passes through the through hole 1041 and is threadedly connected to the screw hole 1022 on the bottom surface of the mounting groove 1021, thereby fixing the stepped screw 1051 on the shell 102; at this time, the elastic member 1052 is accommodated in the through hole 1041, one end of the elastic member 1052 is connected to the nut 1051a of the stepped screw 1051, and the other end is connected to the protrusion 1043b. Due to the elastic deformation of the elastic member 1052, the elastic force generated by the elastic member 1052 acts on the fixing member 104, so that the fixing member 104 presses the light guide rod 103, thereby achieving axial fixation of the light guide rod 103 and preventing the light guide rod 103 from sliding along the axial direction.

[0051] Embodiment 2:

[0052] Please refer to Figure 7 and Figure 8 , Figure 7 is a structural diagram of an illumination device 200 provided in the second embodiment of the present invention. Figure 8 Schematic diagram of the fixing structure of the light guide rod 103 of the lighting device 200 in the second embodiment of the present invention. Components identical to those in the first embodiment are denoted by the same serial numbers. This embodiment differs from the first embodiment in that the mounting groove 2021 on the housing 202 is a threaded hole, the fixing member 204 is sheet-shaped and made of a rigid metal material, which can be placed in the mounting groove 2021, the connecting member 2051 is a stud that matches the mounting groove 2021, and the connecting member 2051 is threadedly connected to the mounting groove 2021, thereby fixing the connecting member 2051 to the housing 202. An elastic member 2052 is disposed between the connecting member 2051 and the fixing member 204. The elastic member 2052 may be a spring or an elastic rubber pad. As the connecting member 2051 is rotated and fixed, the elastic member 2052 undergoes elastic deformation, and the elastic force generated by the elastic member 2052 acts on the fixing member 204, so that the fixing member 204 presses the light guide rod 103, thereby achieving axial fixation of the light guide rod 103 and preventing the light guide rod 103 from sliding along the axial direction.

[0053] In this embodiment, the number of mounting grooves 2021 on the shell 202 can be two or more, and the two or more mounting grooves 2021 are arranged along the axial direction of the light guide rod 103. Each mounting groove 2021 is provided with a connecting member 2051, an elastic member 2052 and a fixing member 204. With such a configuration, the light guide rod 103 can be fixed at multiple locations, thereby increasing the stability of the structure.

[0054] Furthermore, when the elastic member 2052 is an elastic rubber pad, a protective member 2053 is further provided between the connecting member 2051 and the elastic member 2052. The protective member 2053 is made of a rigid metal material, such as steel, aluminum, or a metal alloy. The provision of the protective member 2053 between the connecting member 2051 and the elastic member 2052 prevents the connecting member 2051 from damaging the elastic member 2052 during rotation.

[0055] Example 3:

[0056] Please refer to Figure 9 and Figure 10 , Figure 9 is a structural diagram of a lighting device 300 provided in a third embodiment of the present invention. Figure 10 Schematic diagram of the fixing structure of the light guide rod 103 of the lighting device 300 in the second embodiment of the present invention. Components identical to those in the first embodiment are denoted by the same serial numbers. This embodiment differs from the first embodiment in that the mounting groove 3021 on the housing 302 is a threaded hole, the fixing member 304 is in the form of a sheet made of a rigid metal material and can be placed in the threaded hole, the connecting member 3051 is a stud that matches the threaded hole, and the connecting member 3051 is threadedly connected to the mounting groove 3021, thereby fixing the connecting member 3051 to the housing 302. The elastic member 3052 is a spring disposed between the connecting member 3051 and the fixing member 304. As the connecting member 3051 is rotated and fixed, the elastic member 3052 undergoes elastic deformation. The elastic force generated by the elastic member 3052 acts on the fixing member 304, causing the fixing member 304 to press against the light guide rod 103, thereby fixing the light guide rod 103 in the axial direction and preventing the light guide rod 103 from sliding in the axial direction.

[0057] Please continue to refer to Figure 10 and Figure 11The sidewall 3051a of the connecting member 3051 is provided with a thread that mates with the mounting groove 3021. The side of the connecting member 3051 facing the light guide rod 103 includes a guide post 3051b extending axially along the connecting member 3051. An annular groove 3051c is formed between the sidewall 3051a of the connecting member 3051 and the guide post 3051b. The end of the elastic member 3052 away from the fixing member 304 is accommodated in the groove 3051c. By accommodating the end of the elastic member 3052 away from the fixing member 304 in the groove 3051c and guiding the elastic member 3052 using the guide post 3051b, the elastic member 3052 is prevented from deflecting when the connecting member 3051 rotates, allowing the elastic force of the elastic member 3052 to be evenly applied to the fixing member 304 and, in turn, the light guide rod 103.

[0058] In this embodiment, the number of mounting grooves 3021 on the shell 302 can be two or more, and the two or more mounting grooves 3021 are arranged along the axial direction of the light guide rod 103. Each mounting groove 2021 is provided with a connecting member 2051, an elastic member 2052 and a fixing member 204. With such a configuration, the light guide rod 103 can be fixed at multiple locations, thereby increasing the stability of the structure.

[0059] The present invention also provides a vehicle lamp comprising the lighting devices of the above embodiments. The lighting device can simulate the light distribution of a traditional vehicle light source, can be directly installed in the vehicle lamp, and has the advantages of high brightness and long life.

[0060] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0061] The above description is only an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A lighting device, characterized in that: include: Light-emitting devices; The housing is provided with a mounting hole and a mounting groove communicating with the mounting hole, wherein the bottom surface of the mounting groove passes through the axis of the mounting hole; a light guide rod, which is inserted into the mounting hole, with a portion of the side surface of the light guide rod exposed in the mounting groove, one end of the light guide rod being a light incident surface, and the other end being a light emitting surface, the light incident surface being opposite to the light emitting device, and light emitted by the light emitting device entering the light guide rod through the light incident surface, being transmitted by total reflection inside the light guide rod, and being emitted from the light emitting surface; A fixing member is installed in the installation groove, and the fixing member is connected to an elastic component provided on the housing. The elastic component undergoes elastic deformation so that the fixing member fixes the light guide rod.

2. The lighting device according to claim 1, characterized in that The elastic component includes a connecting piece and an elastic piece. The connecting piece is fixed in the mounting groove. One end of the elastic piece is connected to the connecting piece or the housing, and the other end is connected to the fixing piece.

3. The lighting device according to claim 2, characterized in that The fixing member is provided with a through hole, a protrusion is provided in the through hole, the connecting member is a stepped screw, a screw hole matching the stepped screw is provided on the bottom surface of the mounting groove, the stepped screw passes through the through hole and is connected to the screw hole, the elastic member is sleeved on the stepped screw, one end of the elastic member is connected to the nut of the stepped screw or the shell, and the other end is connected to the protrusion.

4. The lighting device according to claim 3, characterized in that A fixing groove is provided on a side of the fixing member facing the light guide rod, and a groove surface of the fixing groove abuts against the light guide rod.

5. The lighting device according to claim 3, characterized in that There is a gap between the side surface of the fixing member facing the light guide rod and the bottom surface of the mounting groove.

6. The lighting device according to claim 3, characterized in that The number of the connecting member, the elastic member, the through hole and the screw hole are all two, and the two connecting members, the two elastic members, the two through holes and the two screw holes are symmetrical about a plane passing through the axis of the light guide rod.

7. The lighting device according to claim 2, characterized in that The installation groove is a threaded hole, the connecting piece is a stud, the fixing piece is in a sheet shape, the connecting piece is connected to the installation groove via threads, and the elastic piece is arranged between the connecting piece and the fixing piece.

8. The lighting device according to claim 7, characterized in that The connecting member has a guide column extending in the axial direction, an annular groove is formed between the guide column and the side wall of the connecting member, the elastic member is a spring, and one end of the elastic member away from the fixing member is accommodated in the groove.

9. The lighting device according to claim 7, characterized in that The elastic member is an elastic rubber pad, and the elastic component further includes a protective member arranged between the connecting member and the elastic member.

10. The lighting device according to any one of claims 1 to 9, characterized in that: The lighting device further includes a substrate connected to the housing, and the light emitting device is arranged on a side of the substrate facing the housing.

11. The lighting device according to claim 10, characterized in that The lighting device further comprises a heat dissipation component arranged on a side of the substrate away from the housing, the heat dissipation component comprises a radiator and a fan, the radiator has a plurality of heat dissipation fins arranged in an annular shape, and the fan is arranged in the middle of the plurality of heat dissipation fins.

12. A vehicle lamp, characterized in that: The invention comprises the lighting device according to any one of claims 1 to 11.

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