Light-emitting assembly, lighting device and vehicle

Abstract

The present application discloses a light-emitting assembly (100), characterized by comprising: a light source (101) configured to emit light, the light source (101) being arranged on a PCB (102); a light-guiding element (103), arranged in front of the light source (101) and configured to conduct light from the light source; a cover (104), configured to accommodate the PCB (102) and, together with a light-blocking member (106) arranged around the light-guiding element (103), to provide an isolated space for the PCB (102) and the light-guiding element (103), wherein an opening (105) is formed on the cover, the opening (105) being formed at a position close to the PCB (102) and used to dissipate heat from the PCB (102). The present application further discloses a lighting device and a vehicle.

Description

Light-emitting assembly, lighting device and vehicle

[0001] The present application relates to the technical field of vehicle lighting, and in particular to a light-emitting assembly, a lighting device and a vehicle.

[0002] In a vehicle, lighting devices need to be used to perform a variety of functions, such as high / low-beam lighting, light-emitting logos, lighting grilles, styling / ornamentation, marker functions, signalling functions, external lighting, and so on.

[0003] In a conventional lighting device, to ensure effective heat dissipation, openings will generally be provided on a back face or side face of a lamp housing, but such openings might result in light leakage.Summary of the Invention

[0004] An objective of the present disclosure is to solve or overcome at least one of the above and other problems and shortcomings in the prior art.

[0005] The present invention provides a light-emitting assembly, comprising: a light source configured to emit light, the light source being arranged on a PCB; a light-guiding element, arranged in front of the light source and configured to conduct light from the light source; a cover, configured to accommodate the PCB and, together with a light-blocking member arranged around the light-guiding element, to provide an isolated space for the PCB and the light-guiding element, wherein an opening is formed on the housing, the opening being formed at a position close to the PCB and used to dissipate heat from the PCB.

[0006] In some embodiments, the cover comprises a louvre-like surface, which comprises a first surface and a second surface, and a step formed by the first surface and the second surface, wherein the opening is formed at the step.

[0007] In some embodiments, the lighting device further comprises a light guide, and the number of the opening is multiple.

[0008] In some embodiments, the first surface and the second surface are formed on a side face of the cover.

[0009] In some embodiments, the side face is substantially perpendicular to a direction of extension of a main plane of the PCB.

[0010] In some embodiments, edges of the first surface and the second surface are oriented at a predetermined angle relative to the PCB.

[0011] In some embodiments, the first surface and the second surface each have trapezoidal shapes that fit each other.

[0012] In some embodiments, the cover is made from a hard plastics material by an injection moulding process.

[0013] According to another aspect of the present disclosure, the present invention further provides a lighting device, comprising the light-emitting assembly described in any one of the embodiments of the present disclosure.

[0014] According to another aspect of the present disclosure, the present invention further provides a vehicle, comprising the light-emitting assembly or lighting device described in any one of the embodiments of the present disclosure.

[0015] The light-emitting assembly according to the present application can have a good heat dissipation effect, and at the same time can avoid light leakage.Brief Description of the Drawings

[0016] A detailed description of the present disclosure is provided below with reference to the accompanying drawings to make other objectives and advantages of the present disclosure obvious and help achieve a comprehensive understanding of the present disclosure.

[0017] These and / or other aspects, features and advantages of the present disclosure will become obvious and easy to understand from the following description of illustrative embodiments with reference to the drawings, wherein:

[0018] shows schematically a three-dimensional drawing of a light-emitting assembly according to an exemplary embodiment of the present disclosure.

[0019] shows schematically a schematic drawing of a light-emitting assembly according to an exemplary embodiment of the present disclosure, viewed from a different angle.

[0020] shows schematically a partial enlarged drawing of the louvre-like surface of the housing in.

[0021] shows schematically a schematic drawing of a housing and a PCB of a light-emitting assembly according to an exemplary embodiment of the present disclosure.

[0022] shows schematically a schematic drawing of a light-emitting assembly according to another exemplary embodiment of the present disclosure.Detailed Description of Embodiments

[0023] A detailed description of the present disclosure is provided below with reference to the accompanying drawings to make other objectives and advantages of the present disclosure obvious and help achieve a comprehensive understanding of the present disclosure.

[0024] Embodiments of the present disclosure will be described in detail below with reference to the drawings. In this description, identical or similar components are indicated with identical or similar reference numerals. The following description of embodiments of the present disclosure with reference to the drawings is intended to explain the general concept of the present disclosure, and should not be construed as limiting the present disclosure.

[0025] In addition, in the following detailed description, for ease of explanation, many specific details are expounded to provide a comprehensive understanding of embodiments of the present disclosure. However, it is obvious that one or more embodiments may also be implemented without these specific details. In other cases, well known structures and devices are embodied as illustrations to simplify the drawings.

[0026] A light-emitting assembly 100 according to the present disclosure, as shown in, comprises: a light source 101 configured to emit light, the light source 101 being arranged on a PCB 102; a light-guiding element 103, arranged in front of the light source and configured to conduct light from the light source; a cover 104, configured to accommodate the PCB 102 and, together with a light-blocking member 106 arranged around the light-guiding element 103, to provide an isolated space for the PCB 102 and the light-guiding element 103, wherein an opening 105 is formed on the housing, the opening 105 being formed at a position close to the PCB 102 and used to dissipate heat from the PCB 102.

[0027] The light source 101 of the light-emitting assembly 100 according to the present application may comprise any suitable light-emitting device, such as an LED or laser, etc.; the present application imposes no specific restrictions.

[0028] The light-guiding element 103 of the light-emitting assembly 100 according to the present application may comprise any suitable element for guiding light, for example but not limited to a reflector, a collector, a collimator, light guides of various forms, etc. In the example shown in, the light-guiding element 103 is a thick-walled light guide with collimation. However, it should be known that this does not constitute a restriction of the present application.

[0029] The cover 104 is configured to provide an isolated space for the light-guiding element 103 and the PCB 102, and the light source 101 arranged thereon, thereby preventing leakage of light to the interior of a light housing, which would give rise to an undesirable effect.

[0030] To ensure effective heat dissipation while preventing light leakage, the opening 105 is formed on the cover 104 of the light-emitting assembly 100 according to the present application; the opening 105 allows an airflow to pass through, so as to carry away heat generated by electronic elements and the light source on the PCB.

[0031] In an example, as shown in Figs. 2 and 3, the cover 104 comprises a louvre-like surface, which comprises a first surface 1041 and a second surface 1042, and a step formed by the first surface 1041 and the second surface 1042, wherein the opening 105 is formed at the step. Such a design can further avoid leakage of light due to the presence of an opening.

[0032] Specifically, the first surface 1041 and the second surface 1042 are arranged in an alternating manner, wherein the first surface 1041 is a face on which a plane of the cover 104 lies, the second surface 1042 is a face that is recessed with respect to the first surface 1041, and the first surface 1041 and the second surface 1042 form a step. Those skilled in the art will know that the size of the step can be adjusted as needed; the present application should not constitute a restriction. The opening 105 is formed at the step formed by the first surface 1041 and the second surface 1042. The opening 103 may be a portion of the size of the step, or may be the entire step; the present application does not constitute a restriction. As a result of such a design, light from the light source will be blocked by the first surface 1041 and the second surface 1042; only the first surface 1041 and the second surface 1042 can be seen from a direction of observation, so the problem of light leakage can be avoided. The opening 105 formed at the step still allows an airflow to pass through, carrying away heat generated by electronic elements and the light source on the PCB. Thus, effective heat dissipation is ensured while preventing light leakage.

[0033] Specifically, the opening 105 may be designed at some of the steps, or at all of the steps. Preferably, the opening 105 is designed as multiple openings, to improve heat dissipation efficiency.

[0034] In an example, the first surface 1041 and the second surface 1042 are formed on a side face of the cover 104. The side face is substantially perpendicular to a direction of extension of a main plane of the PCB 102. Such an arrangement ensures that there is no obstruction in a direction of air circulation, thus facilitating air circulation. The side face of the cover 104 has a smaller area than a main body thereof, so can also reduce the possibility of light leakage to a certain extent.

[0035] In an example, as shown in, edges of the first surface 1041 and the second surface 1042 are oriented at a predetermined angle relative to the PCB 102. A direction of extension of the first surface 1041 and the second surface 1042 may form a certain angle with an optical axis, and the angular orientation of the edges of the first surface 1041 and the second surface 1042 may be defined with respect to the direction of the optical axis and the direction of extension of the first surface and the second surface. The predetermined angle can ensure that the PCB 102, the light source 101 and the light-guiding element 103 are all invisible, even when observed from the direction of the opening 105. Such a design can further prevent light leakage.

[0036] Specifically, as shown in, the first surface 1041 and the second surface 1042 each have trapezoidal shapes that fit each other, so as to cover a region requiring no illumination more effectively, and enable the size of the opening 105 to be increased, to improve the effectiveness of heat dissipation. In other examples, the first surface 1041 and the second surface 1042 may also have other shapes, such as triangular or rectangular, etc.; the present application does not constitute a specific restriction.

[0037] shows schematically a schematic drawing of a light-emitting assembly according to another exemplary embodiment of the present disclosure.shows another arrangement of the PCB 102 relative to the cover 104. The positional relationship of the PCB 104 and the cover 104 may be adjusted as needed; the present application imposes no specific restrictions.

[0038] Specifically, the cover 104 is made from a hard plastics material by an injection moulding process, in order to reduce the weight of the optical assembly and reduce process costs. The cover 104 may also be made from another material by another process; the present application does not constitute a restriction.

[0039] The light-emitting assembly according to the present application can avoid light leakage to the maximum extent while ensuring effective heat dissipation.

[0040] The present application further provides a lighting device, having the light-emitting assembly described above. The lighting device at least has the abovementioned advantages of the light-emitting assembly 100. In addition to the light-emitting assembly described above, the lighting device may also have a lamp housing, a lens, and other optical elements, etc.; the present application does not constitute a restriction.

[0041] The lighting device according to the present application can serve a lighting function of a vehicle, such as high / low beam, but may also be used to realize other lighting or signalling functions, such as a direction indicator light, brake light, side marker light, parking light, daytime running light, position light, grille light, etc.

[0042] The lighting device 100 according to the present application can ensure that a dynamic illumination effect and a static illumination effect are achieved simultaneously using the same structure, so as to meet different needs, thus avoiding separate design and manufacture of different structures, and reducing costs.

[0043] The present application also provides a vehicle, having the lighting device 100 described above. The vehicle has the advantages of the lighting device described above. The term “vehicle” mentioned herein may mean a vehicle of any type, for example, a motor vehicle, a motorcycle, or any other mobile machine capable of carrying at least one passenger or used to transport people or goods.

[0044] It will be understood that herein the term “one-piece” or “integrated” is relative to the term “independent” or “separate”, that is, a one-piece or integrated component exists as a unit, and does not comprise parts independent or separate from each other in space; for example, the various parts of a one-piece or integrated component may be simultaneously formed (for example moulded), or may be separately formed and thereafter assembled together to form a one-piece assembly.

[0045] Although the present disclosure has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to illustrate preferred embodiments of the present disclosure demonstratively, and must not be construed as limiting the present disclosure. The dimensional proportions in the drawings are merely schematic, and must not be construed as limiting the present disclosure.

[0046] Although some embodiments of the general concept of the present disclosure have been shown and described, those ordinarily skilled in the art will understand that changes can be made to these embodiments without departing from the principle and spirit of the general concept of the present disclosure. The scope of the present disclosure is defined by the claims and their equivalents.

Claims

Light-emitting assembly (100), characterized by comprising:a light source (101) configured to emit light, the light source (101) being arranged on a PCB (102);a light-guiding element (103), arranged in front of the light source (101) and configured to conduct light from the light source;a cover (104), configured to accommodate the PCB (102) and, together with a light-blocking member (106) arranged around the light-guiding element (103), to provide an isolated space for the PCB (102) and the light-guiding element (103), wherein an opening (105) is formed on the cover, the opening (105) being formed at a position close to the PCB (102) and used to dissipate heat from the PCB (102).Light-emitting assembly (100) according to Claim 1, characterized in that the cover (104) comprises a louvre-like surface, which comprises a first surface (1041) and a second surface (1042), and a step formed by the first surface (1041) and the second surface (1042), wherein the opening (105) is formed at the step.Light-emitting assembly (100) according to Claim 2, characterized in that the number of the opening is multiple.Light-emitting assembly (100) according to Claim 2, characterized in that the first surface (1041) and the second surface (1042) are formed on a side face of the cover (104).Light-emitting assembly (100) according to Claim 4, characterized in that the side face is substantially perpendicular to a direction of extension of a main plane of the PCB (102).Light-emitting assembly (100) according to Claim 5, characterized in that edges of the first surface (1041) and the second surface (1042) are oriented at a predetermined angle relative to the PCB (102).Light-emitting assembly (100) according to Claim 2, characterized in that the first surface (1041) and the second surface (1042) each have trapezoidal shapes that fit each other.Light-emitting assembly (100) according to any one of Claims 1 - 7, characterized in that the cover (104) is made from a hard plastics material by an injection moulding process.Lighting device, characterized by comprising the light-emitting assembly (100) according to any one of Claims 1 - 8.Vehicle, characterized by comprising the light-emitting assembly (100) according to any one of Claims 1 - 8 or the lighting device according to Claim 9.

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