Vehicle lamp with adjustable color temperature

Abstract

The utility model provides a kind of color temperature adjustable car light.The color temperature adjustable car light includes at least two projection modules, the projection module includes several light emitting parts, all the light emitting parts include cold light light emitting part and warm light light emitting part, and the power of the cold light light emitting part and the power of the warm light light emitting part can be adjusted respectively.The color temperature adjustable car light of the utility model, all the light emitting parts of at least two projection modules include cold light light emitting part and warm light light emitting part, the power of the cold light light emitting part and the power of the warm light light emitting part can be adjusted to adjust the color temperature of car light light, and it can have definition, brightness and penetration, so it is suitable for various weather environments.

Description

Technical Field

[0001] This utility model relates to the field of vehicles, specifically to a vehicle light with adjustable color temperature. Background Technology

[0002] On vehicles such as electric vehicles, headlights use cool-colored light to provide high clarity and brightness, thus better illuminating the road. However, in weather conditions such as rain, snow, fog, haze, and sandstorms, the penetration of cool-colored light is low and it cannot clearly illuminate the road. Some vehicles are equipped with fog lights, but fog lights do not serve a warning function and cannot be used to clearly illuminate the road. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of this utility model propose a vehicle light with adjustable color temperature.

[0005] The color temperature adjustable vehicle light of this utility model embodiment includes: At least two projection modules are provided, each projection module including a plurality of light-emitting elements, all of which include cold light-emitting elements and warm light-emitting elements, the power of the cold light-emitting elements and the power of the warm light-emitting elements being adjustable respectively.

[0006] The color temperature adjustable vehicle headlight of this utility model embodiment includes at least two projection modules, all of which have light-emitting components including cold light-emitting components and warm light-emitting components. By adjusting the power of the cold light-emitting components and the power of the warm light-emitting components respectively, the color temperature of the vehicle headlight can be adjusted, which can combine clarity, brightness and penetration, thus making it suitable for various weather environments.

[0007] In some embodiments, a portion of the light-emitting element of the projection module is a cold light-emitting element, and another portion of the light-emitting element of the projection module is a warm light-emitting element.

[0008] In some embodiments, the projection module further includes a reflector bowl and a lens, the reflector bowl and the lens being disposed opposite to each other, and a plurality of the light-emitting elements being located inside the reflector bowl and arranged at intervals around the focal point of the reflector bowl.

[0009] In some embodiments, the cold light emitting element is located on one side of the focal point of the reflector bowl, and the warm light emitting element is located on the other side of the focal point of the reflector bowl.

[0010] In some embodiments, along a direction orthogonal to the relative arrangement direction of the reflector bowl and the lens, the cold light emitting element is located on one side of the focal point of the reflector bowl, and the warm light emitting element is located on the other side of the focal point of the reflector bowl; The projection modules are arranged side by side. In two adjacent projection modules, the cold light emitting element of the two projection modules is located between the warm light emitting element of one projection module and the warm light emitting element of the other projection module, or the warm light emitting element of the two projection modules is located between the cold light emitting element of one projection module and the cold light emitting element of the other projection module.

[0011] In some embodiments, along the direction in which the reflector bowl and the lens are arranged opposite each other, the cold light emitting element is located on one side of the focal point of the reflector bowl, and the warm light emitting element is located on the other side of the focal point of the reflector bowl.

[0012] In some embodiments, the light-emitting element is a lamp bead, or the light-emitting element is a light-emitting chip.

[0013] In some embodiments, the at least two projection modules include a cold light projection module and a warm light projection module, wherein a plurality of light-emitting elements of the cold light projection module are all cold light-emitting elements, and a plurality of light-emitting elements of the warm light projection module are all warm light-emitting elements.

[0014] In some embodiments, the cold light emitting element includes a white light emitting element, and the warm light emitting element includes a yellow light emitting element.

[0015] In some embodiments, the projection module further includes a reflector bowl, a lens, and a light-shielding bracket, wherein the reflector bowl and the lens are disposed opposite to each other, the light-shielding bracket is disposed between the reflector bowl and the lens, and a plurality of the light-emitting elements are located inside the reflector bowl. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a first example of a color temperature adjustable vehicle light according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of a second example of a color temperature adjustable vehicle light according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of a third example of a color temperature adjustable vehicle light according to an embodiment of the present invention.

[0017] Figure label: 1. Projection module; 11. Cold light emitting element; 12. Warm light emitting element; 13. Reflector bowl; 14. Lens; 15. Lamp bead; 16. Light-emitting chip; 17. Light-shielding bracket; 2. Circuit board. Detailed Implementation

[0018] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0019] The following is for reference. Figures 1-3 This invention describes a vehicle headlight with adjustable color temperature according to an embodiment of the present invention.

[0020] like Figures 1-3 As shown, the color temperature adjustable vehicle headlight of this utility model embodiment includes at least two projection modules 1.

[0021] The projection module 1 includes several light-emitting elements. In other words, the projection module 1 can have one, two, or more light-emitting elements.

[0022] All light-emitting elements include cold light-emitting elements 11 and warm light-emitting elements 12. All light-emitting elements refer to all light-emitting elements in the projection module 1. Cold light-emitting elements 11 emit cold light, and warm light-emitting elements 12 emit warm light. The number of cold light-emitting elements 11 and warm light-emitting elements 12 can be the same or different.

[0023] The power of the cold light emitting element 11 and the power of the warm light emitting element 12 can be adjusted separately. Adjusting the power of the cold light emitting element 11 can change the output ratio of the luminous flux of the cold light emitting element 11, and adjusting the power of the warm light emitting element 12 can change the output ratio of the luminous flux of the warm light emitting element 12, thereby adjusting the color temperature of the vehicle headlight formed by the superposition of cold and warm light.

[0024] The color temperature adjustable vehicle headlight of this utility model embodiment includes at least two projection modules 1, all of which include a cold light emitting element 11 and a warm light emitting element 12. By adjusting the power of the cold light emitting element 11 and the power of the warm light emitting element 12 respectively, the color temperature of the vehicle headlight can be adjusted, which can combine clarity, brightness and penetration, thus making it suitable for various weather environments.

[0025] In some embodiments, the power of the cold light emitting element 11 can be adjusted to zero. When the power of the cold light emitting element 11 is zero, the headlight light is the warm light emitted by the warm light emitting element 12.

[0026] In some embodiments, the power of the warm light emitting element 12 can be adjusted to zero. When the power of the warm light emitting element 12 is adjusted to zero, the headlight light is the cold light emitted by the cold light emitting element 11.

[0027] Therefore, it can be understood that the vehicle headlights of this utility model embodiment are not limited to switching between cool light and warm light when adjusting color temperature, but rather provide light with several transitional color temperatures between cool light and warm light. In some embodiments, the cold light emitting element 11 includes a white light emitting element; in other words, the cold light emitted by the cold light emitting element 11 is preferably, but not limited to, white light.

[0028] In some embodiments, the warm light emitting element 12 includes a yellow light emitting element; in other words, the warm light emitted by the warm light emitting element 12 is preferably, but not limited to, yellow light.

[0029] In some embodiments, such as Figures 1-3 As shown, one part of the light-emitting elements of the projection module 1 is a cold light-emitting element 11, and the other part of the light-emitting elements of the projection module 1 is a warm light-emitting element 12. In other words, each projection module 1 has a cold light-emitting element 11 and a warm light-emitting element 12.

[0030] In projection module 1, there can be one or two or more cold light emitting elements 11, and one or two or more warm light emitting elements 12. The number of cold light emitting elements 11 and warm light emitting elements 12 can be the same or different.

[0031] By adjusting the power of the cold light emitting element 11 and the power of the warm light emitting element 12, the color temperature of the light from the projection module 1 formed by the superposition of cold and warm light can be adjusted, thereby adjusting the color temperature of the vehicle headlights.

[0032] In projection module 1, the number of cold light emitting elements 11 and warm light emitting elements 12 is preferably the same, so as to adjust the output ratio of luminous flux of cold light emitting elements 11 and the output ratio of luminous flux of warm light emitting elements 12, thereby facilitating color temperature control.

[0033] It is understood that the projection module 1 is not limited to having both a cold light emitting element 11 and a warm light emitting element 12.

[0034] In other embodiments, at least two projection modules 1 include a cold light projection module and a warm light projection module. Several light-emitting elements in the cold light projection module are cold light-emitting elements 11, and several light-emitting elements in the warm light projection module are warm light-emitting elements 12. Adjusting the power of the cold light-emitting elements 11 can change the output ratio of the luminous flux of the cold light projection module, and adjusting the power of the warm light-emitting elements 12 can change the output ratio of the luminous flux of the warm light projection module, thereby adjusting the color temperature of the vehicle headlight light formed by the superposition of cold and warm light.

[0035] In some embodiments, such as Figures 1-3 As shown, the projection module 1 also includes a reflector bowl 13 and a lens 14, which are arranged opposite to each other. Several light-emitting elements are located inside the reflector bowl 13. The light emitted by the light-emitting elements is focused by the reflector bowl 13 and then refracted by the lens 14 to be emitted in a focused state, thereby improving the brightness and illumination range of the beam emitted by the projection module 1.

[0036] Several light-emitting elements of the projection module 1 are arranged at intervals around the focal point of the reflector bowl 13 so that each light-emitting element has a shorter distance from the focal point of the reflector bowl 13, thereby improving the beam focusing efficiency and illumination distance.

[0037] In some embodiments, such as Figures 1-3 As shown, the projection module 1 also includes a light-shielding bracket 17, which is disposed between the reflector bowl 13 and the lens 14. The light emitted by the light-emitting element is focused by the reflector bowl 13, then passes through the inner cavity of the light-shielding bracket 17 to reach the lens 14, and is then refracted by the lens 14 to be emitted in a focused state.

[0038] The light-shielding bracket 17 can prevent the light gathered by the reflector bowl 13 in the projection module 1 from spreading and affecting the light in the adjacent projection module 1 when it moves toward the lens 14, which is beneficial to improving the brightness and illumination range of the beam emitted by the projection module 1.

[0039] In some embodiments, the headlight also includes a radiator, the reflector 13 and the sunshade bracket 17 are connected to the radiator by means of connectors such as bolts, and the lens 14 is connected to the sunshade bracket 17 by means of connectors such as bolts.

[0040] In some embodiments, such as Figures 1-3 As shown, the cold light emitting element 11 is located on one side of the focal point of the reflector bowl 13, and the warm light emitting element 12 is located on the other side of the focal point of the reflector bowl 13. This facilitates the arrangement and installation of the cold light emitting element 11 and the warm light emitting element 12, and also ensures that both the cold light emitting element 11 and the warm light emitting element 12 have a shorter distance from the focal point of the reflector bowl 13, thereby improving the beam focusing efficiency and illumination distance of the cold and warm light.

[0041] In some embodiments, along a direction orthogonal to the relative arrangement direction of the reflector bowl 13 and the lens 14, the cold light emitting element 11 is located on one side of the focal point of the reflector bowl 13, and the warm light emitting element 12 is located on the other side of the focal point of the reflector bowl 13.

[0042] like Figure 1 As shown, the reflecting bowl 13 and lens 14 are along Figure 1 As shown, the front and rear directions are set relative to each other, along... Figure 1 As shown in the left and right directions, the cold light emitting element 11 can be set to the left of the focal point of the reflector bowl 13, and the warm light emitting element 12 can be set to the right of the focal point of the reflector bowl 13. Alternatively, the cold light emitting element 11 can be set to the right of the focal point of the reflector bowl 13, and the warm light emitting element 12 can be set to the left of the focal point of the reflector bowl 13.

[0043] like Figure 2 As shown, the reflecting bowl 13 and lens 14 are along Figure 2 As shown, the left and right directions are relatively opposite, along Figure 2The vertical direction shown can be configured such that the cold light emitting element 11 is located above the focal point of the reflector bowl 13, and the warm light emitting element 12 is located below the focal point of the reflector bowl 13; or the cold light emitting element 11 is located below the focal point of the reflector bowl 13, and the warm light emitting element 12 is located above the focal point of the reflector bowl 13.

[0044] like Figure 1 and Figure 2 As shown, projection modules 1 are arranged side by side.

[0045] like Figure 1 As shown, in two adjacent projection modules 1, the warm light emitters 12 of the two projection modules 1 are located between the cold light emitters 11 of one projection module 1 and the cold light emitters 11 of the other projection module 1. The warm light emitters 12 and cold light emitters 11 of the projection module 1 on the left side both form a light pattern biased to the left, while the warm light emitters 12 and cold light emitters 11 of the projection module 1 on the right side both form a light pattern biased to the right. The light patterns of the warm light emitters 12 of the left projection module 1 and the right projection module 1 are symmetrical, and after overlapping, the warm light of the two projection modules 1 is centered. Similarly, the light patterns of the cold light emitters 11 of the left projection module 1 and the right projection module 1 are symmetrical, and after overlapping, the cold light of the two projection modules 1 is centered. Thus, the warm and cold light of the two projection modules 1 can overlap to form a concentrated beam and facilitate adjustment of the beam's color temperature.

[0046] like Figure 2 As shown, in two adjacent projection modules 1, the cold light emitting element 11 of the two projection modules 1 is located between the warm light emitting element 12 of one projection module 1 and the warm light emitting element 12 of the other projection module 1. The warm light emitting element 12 and the cold light emitting element 11 of the upper projection module 1 both form an upward light pattern, while the warm light emitting element 12 and the cold light emitting element 11 of the lower projection module 1 both form a downward light pattern. The light pattern of the warm light emitting element 12 of the upper projection module 1 is symmetrical to that of the lower projection module 1, and after overlapping, the warm light of the two projection modules 1 is centered. Similarly, the light pattern of the cold light emitting element 11 of the upper projection module 1 is symmetrical to that of the lower projection module 1, and after overlapping, the cold light of the two projection modules 1 is centered. Thus, the cold and warm light of the two projection modules 1 can overlap, allowing the headlight to form a concentrated beam and facilitating the adjustment of the beam color temperature.

[0047] In some embodiments, such as Figure 3 As shown, along the direction in which the reflector bowl 13 and the lens 14 are positioned opposite each other (e.g.) Figure 3(As shown in the left-right direction), the cold light emitting element 11 is located on one side of the focal point of the reflector bowl 13, and the warm light emitting element 12 is located on the other side of the focal point of the reflector bowl 13. Alternatively, the cold light emitting element 11 can be positioned to the left of the focal point of the reflector bowl 13, and the warm light emitting element 12 to the right of the focal point of the reflector bowl 13; or the cold light emitting element 11 can be positioned to the right of the focal point of the reflector bowl 13, and the warm light emitting element 12 to the left of the focal point of the reflector bowl 13.

[0048] In two adjacent projection modules 1, the cold light emitting element 11 can be located to the left or right of the corresponding focal point, or the cold light emitting element 11 of one projection module 1 can be located to the left of the focal point of the reflector bowl 13, and the cold light emitting element 11 of the other projection module 1 can be located to the right of the focal point of the reflector bowl 13. Correspondingly, the warm light emitting element 12 can be located to the left or right of the corresponding focal point, or the warm light emitting element 12 of one projection module 1 can be located to the left of the focal point of the reflector bowl 13, and the warm light emitting element 12 of the other projection module 1 can be located to the right of the focal point of the reflector bowl 13. The headlights can form a concentrated beam and the color temperature of the beam can be adjusted.

[0049] Preferably, the cold light emitting elements 11 are all located on one side of the corresponding focal point, and the warm light emitting elements 12 are all located on the other side of the corresponding focal point.

[0050] In such Figure 3 In the example shown, the projection modules 1 can be arranged side by side, or arranged in an arc or circle around each other, preferably side by side.

[0051] In some embodiments, the light-emitting element is an LED bead 15, or a light-emitting chip 16.

[0052] like Figures 1-3 As shown, the projection module 1 also includes several LED beads 15. In other words, the projection module 1 may include one LED bead 15 or two or more LED beads 15.

[0053] In such Figure 1 and Figure 2 In the example shown, the projection module 1 includes two LEDs 15, as shown in the example. Figure 3 In the example shown, projection module 1 includes an LED 15.

[0054] like Figures 1-3 As shown, the lamp bead 15 can be an LED lamp bead, and the lamp bead 15 includes a plurality of light-emitting chips 16. In other words, the lamp bead 15 can have one light-emitting chip 16, or it can have two or more light-emitting chips 16. The light-emitting chips 16 of the lamp bead 15 can all emit cold light or all emit warm light, or a portion of the light-emitting chips 16 of the lamp bead 15 can emit cold light, while another portion of the light-emitting chips 16 of the lamp bead 15 emits warm light.

[0055] In such Figure 1 and Figure 3 In the example shown, the LED 15 includes at least two light-emitting chips 16, optionally two light-emitting chips 16, one of which emits cold light and serves as a cold light emitting element 11, and the other light-emitting chip 16 emits warm light and serves as a warm light emitting element 12. Thus, in the example shown... Figure 1 and Figure 3 In the example shown, the light-emitting element is a light-emitting chip 16. It is understood that in other embodiments, there are two or more light-emitting chips 16 emitting warm light in the lamp bead 15, and / or, there are two or more light-emitting chips 16 emitting cold light in the lamp bead 15.

[0056] In such Figure 2 In the example shown, the LED bead 15 includes several light-emitting chips 16, optionally one light-emitting chip 16. In the projection module 1, the light-emitting chips 16 of one LED bead 15 all emit warm light, so that the LED bead 15 emits warm light and acts as a warm light emitting element 12. The light-emitting chips 16 of another LED bead 15 all emit cold light, so that the LED bead 15 emits cold light and acts as a cold light emitting element 11. Thus, in the example shown... Figure 2 In the example shown, the light-emitting element is an LED chip 15. It will be understood that in other embodiments, the light-emitting chip 16 in the LED chip 15 may be two or more.

[0057] In some embodiments, the headlight further includes a circuit board 2, to which all the light-emitting chips 16 are electrically connected, thereby giving the headlight a simple structure. Optionally, the connection ends of the light-emitting chips 16 penetrate the wall of the reflector bowl 13 and are soldered to the circuit board 2. The circuit board 2 may be connected to a heat sink via a connection such as bolts.

[0058] The color temperature adjustable vehicle headlight in this embodiment can be a low beam headlight.

[0059] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0060] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0061] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0062] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0063] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A vehicle light with adjustable color temperature, characterized in that, include: At least two projection modules (1) are provided, each projection module (1) including a number of light-emitting elements, all of which include cold light-emitting elements (11) and warm light-emitting elements (12). The power of the cold light-emitting elements (11) and the power of the warm light-emitting elements (12) can be adjusted respectively.

2. The color temperature adjustable vehicle headlight according to claim 1, characterized in that, One part of the light-emitting element of the projection module (1) is the cold light-emitting element (11), and the other part of the light-emitting element of the projection module (1) is the warm light-emitting element (12).

3. The color temperature adjustable vehicle headlight according to claim 2, characterized in that, The projection module (1) also includes a reflector bowl (13) and a lens (14). The reflector bowl (13) and the lens (14) are arranged opposite to each other. A number of light-emitting elements are located inside the reflector bowl (13) and are arranged at intervals around the focal point of the reflector bowl (13).

4. The color temperature adjustable vehicle headlight according to claim 3, characterized in that, The cold light emitting element (11) is located on one side of the focal point of the reflective bowl (13), and the warm light emitting element (12) is located on the other side of the focal point of the reflective bowl (13).

5. The color temperature adjustable vehicle headlight according to claim 4, characterized in that, Along a direction orthogonal to the relative arrangement direction of the reflector bowl (13) and the lens (14), the cold light emitting element (11) is located on one side of the focal point of the reflector bowl (13), and the warm light emitting element (12) is located on the other side of the focal point of the reflector bowl (13); The projection modules (1) are arranged side by side. In two adjacent projection modules (1), the cold light emitting element (11) of the two projection modules (1) is located between the warm light emitting element (12) of one projection module (1) and the warm light emitting element (12) of the other projection module (1), or the warm light emitting element (12) of the two projection modules (1) is located between the cold light emitting element (11) of one projection module (1) and the cold light emitting element (11) of the other projection module (1).

6. The color temperature adjustable vehicle headlight according to claim 4, characterized in that, Along the direction in which the reflector bowl (13) and the lens (14) are arranged opposite to each other, the cold light emitting element (11) is located on one side of the focal point of the reflector bowl (13), and the warm light emitting element (12) is located on the other side of the focal point of the reflector bowl (13).

7. The color temperature adjustable vehicle headlight according to claim 4, characterized in that, The light-emitting element is a lamp bead (15), or the light-emitting element is a light-emitting chip (16).

8. The color temperature adjustable vehicle headlight according to claim 1, characterized in that, The at least two projection modules (1) include a cold light projection module and a warm light projection module, wherein a plurality of the light-emitting elements of the cold light projection module are all cold light-emitting elements (11), and a plurality of the light-emitting elements of the warm light projection module are all warm light-emitting elements (12).

9. The vehicle headlight with adjustable color temperature according to any one of claims 1-8, characterized in that, The cold light emitting element (11) includes a white light emitting element, and the warm light emitting element (12) includes a yellow light emitting element.

10. The vehicle headlight with adjustable color temperature according to any one of claims 1-8, characterized in that, The projection module (1) further includes a reflector bowl (13), a lens (14) and a light-shielding bracket (17). The reflector bowl (13) and the lens (14) are arranged opposite to each other. The light-shielding bracket (17) is located between the reflector bowl (13) and the lens (14). A plurality of light-emitting elements are located inside the reflector bowl (13).

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