A multi-zone luminous light source and vehicle headlight

Abstract

The present invention relates to a multi-zone light source and a vehicle headlamp, comprising: a substrate having a first and a second relative surface and a light array arranged on the first surface of the substrate; the light array comprises a plurality of light-emitting elements, the light-emitting elements are divided into a plurality of light-emitting areas, each light-emitting area comprises at least one light-emitting element; the light-emitting elements belonging to different light-emitting areas are connected in series or in parallel through a conductive circuit and / or a conductive metal wire arranged on the substrate, each light-emitting area corresponds to at least one external soldering pad, and each light-emitting area is respectively conductively connected to a corresponding external power source through the external soldering pad; wherein the plurality of light-emitting areas at least comprise: a low-beam light-emitting area arranged at the lower side of the optical center of the light source, a high-beam light-emitting area arranged at the optical center of the light source, and a steering light-emitting area arranged at the left and right sides of the optical center. The implementation of the present invention can realize the individual control of the turning off and on of each light-emitting area, and realize the multi-functional requirements of the light source in the application of vehicle headlamps.

Description

Technical Field

[0001] The present invention relates to the technical field of light sources, and more particularly to a multi-zone luminous light source and a vehicle headlamp. Background Art

[0002] The light sources suitable for the high and low beam lighting system for vehicles (including cars, trucks, motorcycles, electric vehicles, buses, etc.) include halogen lamps, xenon lamps and LED lamps. Halogen lamps have short life, low light efficiency and short irradiation distance. The illumination of xenon lamps is twice that of halogen lamps, and the efficiency of converting electrical energy into light energy is 80% higher than that of halogen lamps, and the service life can reach 10 times. The light efficiency of LED lamps is 5 times that of halogen lamps, and they have the characteristics of high brightness, rich colors, small size and long life. In recent years, LED lamps have begun to gradually replace halogen lamps and xenon lamps. Regardless of whether halogen lamps, xenon lamps or LED lamps are used, the high and low beam lighting systems for vehicles are single-beam lighting sources. In addition to being able to realize the opening and closing functions, they cannot realize intelligent adaptive high and low beam functional lighting.

[0003] Figure 5 It is a common LED light source used in dual-light lens type vehicle headlights, including a substrate A, a light-emitting array B, light-emitting elements constituting the light-emitting array B, and an external solder pad. Figure 6 As shown, the light source is usually welded to the surface of the heat sink C, a reflector cup D is usually installed above the light source, a lens E is usually installed at the light outlet, and a baffle F that provides a low beam cutting line. When the external power supply is connected to the external solder pad, the light array B can be powered. The external power supply can only control the shutdown and brightness of the light array A, and then provide a low beam cutting line by opening and closing the baffle F to achieve switching between high and low beams, but cannot achieve more functions.

[0004] In daily driving, in addition to the commonly used high beam and low beam, people also hope that the headlights can have more lighting functions. For example, when driving on city streets, people hope that the headlights will not be too dazzling, and it is best to illuminate the sidewalks and streets at the same time, which is not only convenient for pedestrians but also improves safety. This requires the beam of the headlights to become wider and more uniform; when driving on highways, people hope that the headlights can illuminate farther, providing drivers with a longer safety reaction time, which requires the beam of the headlights to become narrower; when the car turns, it is best to illuminate the inside of the curve, which requires the left or right side of the headlight to have an extended beam. The use of a single light-emitting area to turn off and brighten and darken cannot achieve more lighting functions.

[0005] Obviously, the above-mentioned LED light sources, especially when applied to vehicle headlights, have essential defects and deficiencies and cannot meet the requirements for multifunctional vehicle headlights. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a multi-zone light source and a vehicle headlight in view of the above-mentioned technical defects of the prior art.

[0007] The technical solution adopted by the present invention to solve the technical problem is: construct a multi-zone light source, including: a substrate having a first surface and a second surface opposite to each other and a light emitting array arranged on the first surface of the substrate;

[0008] The light-emitting array includes a plurality of light-emitting elements, and the light-emitting elements are divided into a plurality of light-emitting areas, each of which includes at least one light-emitting element; each of the light-emitting elements may belong to one or more light-emitting areas;

[0009] The light-emitting elements belonging to different light-emitting areas are connected in series and / or in parallel with each other through conductive circuits and / or conductive metal wires arranged on the substrate, each light-emitting area corresponds to at least one external soldering pad, and each light-emitting area is conductively connected to a corresponding external power source through the external soldering pad;

[0010] Among them, the several light-emitting areas at least include: a low-beam light-emitting area arranged at the lower side of the optical center of the light source to realize low-beam lighting, a high-beam light-emitting area arranged at the optical center of the light source to realize high-beam lighting, and a turning light-emitting area arranged on the left and right sides of the optical center to realize left and right turning lighting.

[0011] Preferably, the plurality of light-emitting areas further include a high-speed lighting light-emitting area arranged above the center of the light source and narrowing leftward and rightward, and / or a street lighting light-emitting area arranged below the optical center of the light source and widening leftward and rightward.

[0012] Preferably, the light emitting array comprises a first light emitting array arranged in a transverse direction, and a second light emitting array arranged in a vertical direction on one side of the first light emitting array.

[0013] Preferably, all the light emitting elements of the first light emitting array constitute the street lighting light emitting area;

[0014] The light emitting elements in the middle of the first light emitting array constitute the low beam light emitting area;

[0015] The light-emitting elements of the first light-emitting array close to the two sides respectively constitute the turning light-emitting area;

[0016] The light-emitting elements of the first light-emitting array close to the middle position and the light-emitting elements of the second light-emitting array close to the first light-emitting array together constitute the high-beam light-emitting area;

[0017] The high-speed lighting luminous area includes a first high-speed lighting luminous area and / or a second high-speed lighting luminous area.

[0018] The light emitting elements near the middle of the first light emitting array and some of the light emitting elements near the first light emitting array of the second light emitting array constitute the first high-speed lighting light emitting area, or the light emitting elements near the middle of the first light emitting array and all the light emitting elements of the second light emitting array constitute the first high-speed lighting light emitting area;

[0019] All the light emitting elements of the second light emitting array constitute the second high-speed lighting light emitting area, or part of the light emitting elements of the second light emitting array away from the first light emitting array constitute the second high-speed lighting light emitting area.

[0020] Preferably, the external solder pads include street lighting pads, low beam solder pads, turning solder pads, high beam solder pads and high-speed lighting pads which are electrically connected one-to-one with the street lighting light-emitting area, the low beam light-emitting area, the turning light-emitting area, the high beam light-emitting area and the high-speed lighting light-emitting area.

[0021] Preferably, the first light emitting array comprises fourteen light emitting elements arranged laterally;

[0022] The second light-emitting array includes four light-emitting elements arranged vertically on one side of the first light-emitting array, and the light-emitting elements of the second light-emitting array are aligned with the two light-emitting elements at the center of the first light-emitting array.

[0023] Preferably, the six light-emitting elements in the middle of the first light-emitting array constitute the low-beam light-emitting area;

[0024] The six light-emitting elements of the first light-emitting array close to two sides respectively constitute the turning light-emitting area;

[0025] The four light-emitting elements of the first light-emitting array close to the middle position and the two light-emitting elements of the second light-emitting array close to the first light-emitting array together constitute the high-beam light-emitting area;

[0026] The two light emitting elements near the middle of the first light emitting array and all the light emitting elements of the second light emitting array constitute the first high-speed lighting light emitting area;

[0027] All the light emitting elements of the second light emitting array constitute the second high-speed lighting light emitting area.

[0028] Preferably, the light emitting spectra of the light emitting elements are the same as or different from each other.

[0029] Preferably, the light emitting element is one or more of a light emitting chip, an LED, and a cspled;

[0030] The light emitting chip is one or more of a face-up chip, a flip chip, a vertical chip, and a thin film flip chip.

[0031] Preferably, the light-emitting chip is covered or wrapped by at least one photoluminescent layer, or there is at least one photoluminescent sheet on the light-emitting chip;

[0032] The photoluminescent layer comprises one or more of resin and silica gel, and the photoluminescent layer further comprises one or more of phosphor and / or quantum dots;

[0033] The photoluminescent sheet is one or more of a ceramic-based photoluminescent sheet, a glass-based photoluminescent sheet, a resin-based photoluminescent sheet, and a silica-based photoluminescent sheet, and the photoluminescent sheet further comprises one or more of fluorescent powder and / or quantum dots.

[0034] Preferably, there is at least one light shielding layer on the photoluminescent layer; the light shielding layer is provided with at least one opening to expose a portion of the photoluminescent layer; or

[0035] There is at least one transparent filling layer and / or bonding layer between the photoluminescent sheet and the light-emitting chip.

[0036] Preferably, it further comprises at least one dam; the dam is arranged at the periphery of the light-emitting array, and the photoluminescent layer or the photoluminescent sheet is located within the dam.

[0037] Preferably, an insulating reflective layer is provided on the first surface of the substrate; the insulating reflective layer comprises one or more of silica gel, resin, glass glaze, liquid glass, ink and coating; and / or

[0038] Part or all of the external pads are disposed on the first surface and / or the second surface of the substrate.

[0039] Preferably, the substrate is a metal substrate or a ceramic substrate;

[0040] The ceramic substrate is arranged on a copper-clad metal circuit board; at least one heat-conducting pad is arranged on the second surface of the ceramic substrate;

[0041] Part or all of the external soldering pads are conductively connected to corresponding external soldering pads disposed on the copper-clad metal circuit board;

[0042] The thermally conductive pad is connected to a thermally conductive pad arranged on the copper-clad metal circuit board.

[0043] The present invention also constructs a vehicle headlamp, comprising at least one multi-zone light source as described above, wherein the multi-zone light source is arranged on one side or both sides of the optical center point of the vehicle headlamp.

[0044] The multi-zone luminous light source and vehicle headlamp of the present invention have the following beneficial effects: each luminous zone can be individually controlled to be turned off and on, thereby realizing the multifunctional requirements of the light source in the vehicle headlamp application. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0046] Figure 1 It is a structural schematic diagram of a first embodiment of a multi-zone light source of the present invention;

[0047] Figure 2 It is a structural schematic diagram of a second embodiment of a multi-zone light source of the present invention;

[0048] Figure 3 It is a structural schematic diagram of a third embodiment of a multi-zone light source of the present invention;

[0049] Figure 4 It is a structural schematic diagram of an embodiment of a vehicle headlight of the present invention;

[0050] Figure 5 It is a structural schematic diagram of an existing vehicle headlight light source;

[0051] Figure 6 It is a structural schematic diagram of an existing vehicle headlight. DETAILED DESCRIPTION

[0052] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described in detail with reference to the accompanying drawings.

[0053] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described in detail with reference to the accompanying drawings.

[0054] like Figure 1As shown, in a first embodiment of a multi-zone light source of the present invention, it includes a substrate having a first surface and a second surface relative to each other and a light-emitting array arranged on the first surface of the substrate; the light-emitting array includes a plurality of light-emitting elements, and the light-emitting elements are divided into a plurality of light-emitting areas, each of which includes at least one light-emitting element; each light-emitting element may belong to one or more light-emitting areas; the light-emitting elements belonging to different light-emitting areas are each connected in series and / or in parallel with each other through a conductive circuit and / or a conductive metal wire arranged on the substrate, each light-emitting area corresponds to at least one external soldering pad, and each light-emitting area is conductively connected to a corresponding external power source through the external soldering pad; wherein the plurality of light-emitting areas include at least: a low-beam light-emitting area 110 arranged at the lower side of the optical center of the light source to realize low-beam lighting, a high-beam light-emitting area 120 arranged at the optical center of the light source to realize high-beam lighting, and turn-on light-emitting areas 131, 132 arranged on the left and right sides of the optical center to realize left and right turn-on lighting. Specifically, a light-emitting array composed of a plurality of light-emitting elements is arranged on a substrate, and different light-emitting areas are formed by the light-emitting elements. The light-emitting areas here are mainly divided by the areas illuminated by the light-emitting elements, such as a low-beam light-emitting area 110 arranged at the lower side of the optical center of the light source to realize low-beam lighting, a high-beam light-emitting area 120 arranged at the optical center of the light source to realize high-beam lighting, and a turning light-emitting area 131, 132 arranged on the left and right sides of the optical center to realize left and right turning lighting. When the light-emitting element corresponding to the low-beam light-emitting area 110 is connected to an external power supply, normal low-beam lighting can be obtained. When the light-emitting element corresponding to the high-beam light-emitting area 120 is connected to an external power supply, normal high-beam lighting can be obtained. When the light-emitting element corresponding to the turning light-emitting area is connected to an external power supply, the inside of the curve can be illuminated when the car turns. The turning light-emitting area here includes a left turning light-emitting area 131 and a right turning light-emitting area 132, which can respectively realize that when the car turns left or right, the corresponding area inside the curve is illuminated. It can also be understood here that each light-emitting area can correspond to one or more light-emitting elements. It can also be understood that the light-emitting elements can belong to different light-emitting areas, that is, each light-emitting element can participate in only one light-emitting area or in multiple light-emitting areas. When a light-emitting area includes multiple light-emitting elements, the multiple light-emitting elements can be connected in series and / or in parallel with each other through a conductive circuit and / or a conductive metal wire arranged on the substrate. The connection between the light-emitting area and the external power supply circuit can be achieved by an external solder pad arranged on the substrate. It can also be understood that the conductive circuit or conductive metal wire on the substrate can be arranged on the first surface of the substrate.

[0055] Further, such as Figure 2As shown, on the basis of the above, in some embodiments, the plurality of luminous areas further include a high-speed lighting luminous area 140 arranged on the upper side of the center of the light source and narrowed to the left and right, and / or a street lighting luminous area 150 arranged on the lower side of the optical center of the light source and widened to the left and right. Specifically, the luminous elements constitute a high-speed lighting luminous area 140 that can meet the requirements of high-speed lighting. When driving at high speed, the luminous elements corresponding to the luminous area are connected to the external power supply to increase the projection distance. On the one hand, the height of the light beam can be increased, and on the other hand, the area of ​​the luminous area can be reduced, and the light density of the luminous area can be further increased to increase the irradiation distance of the light, and reduce the light pollution on both sides of the road. The luminous elements can also constitute a street lighting luminous area 150 with a widened irradiation area. When driving on urban streets, it is usually hoped that the front direct irradiation is not too dazzling to avoid glare to pedestrians and oncoming vehicles. At the same time, it is hoped that the irradiation area in front can be widened to illuminate the streets and sidewalks on both sides. This not only makes it convenient for pedestrians to walk, but also allows the driver to see the road conditions around him clearly, especially in a crowded environment. , It is helpful to find various obstacles and children, etc., and the paving effect can be achieved through the street lighting luminous area 150. It can be understood that the widening here refers to widening on the left and right to correspond to the left and right of the road or street.

[0056] Further, such as Figure 3 As shown, the light-emitting array includes a first light-emitting array 400 arranged horizontally, and a second light-emitting array 300 arranged vertically on one side of the first light-emitting array 400. Specifically, the light-emitting array arranged on the substrate 100 includes the first light-emitting array 400 arranged horizontally and the second light-emitting array 300 arranged vertically. It can also be understood that the second light-emitting array 300 is located near the center of the first light-emitting array 400, and the arrangement of the first light-emitting array 400 and the second light-emitting array 300 can form a pyramid shape or a herringbone shape.

[0057] Further, all the light emitting elements of the first light emitting array 400 constitute the street lighting light emitting area 150; the light emitting elements in the middle position of the first light emitting array 400 constitute the low beam light emitting area 110; the light emitting elements of the first light emitting array 400 close to the two sides constitute the turning light emitting area; the light emitting elements close to the middle position of the first light emitting array 400 and the light emitting elements close to the first light emitting array 400 of the second light emitting array 300 together constitute the high beam light emitting area 120; the high-speed lighting light emitting area 140 may include the first high-speed lighting light emitting area and / or the second high-speed lighting light emitting area, and the light emitting elements close to the middle position of the first light emitting array 400 and some of the light emitting elements close to the first light emitting array 400 in the second light emitting array 300 constitute the first high-speed lighting light emitting area; the first high-speed lighting light emitting area may also be formed by the light emitting elements close to the middle position of the first light emitting array 400 and all the light emitting elements of the second light emitting array 300; on the other hand, all the light emitting elements of the second light emitting array 300 constitute the second high-speed lighting light emitting area. The second high-speed lighting light emitting area may also be formed by some of the light emitting elements of the second light emitting array 300 far from the first light emitting array 400. Specifically, in order to ensure that the low-beam luminous area 110 is located below the center line of the light source, the light-emitting elements in the middle position of the first light-emitting array 400 arranged horizontally can be conductively connected to form the low-beam luminous area 110. In order to realize the illumination of the inner side of the curve when turning, the light-emitting elements near the two sides of the first light-emitting array 400 are conductively connected to form the turning luminous area. It can also be understood that the light-emitting elements on the left and right sides are conductively connected to form the left turning luminous area 131 and the right turning luminous area 132. In order to achieve the maximum paving effect, all the light-emitting elements in the first light-emitting array 400 are conductively connected to form the street lighting luminous area 150. The light-emitting elements near the optical center point of the light source are selected to form the low-beam luminous area 110. Here, according to the structure of the first light-emitting array 400 and the second light-emitting array 300, the light-emitting elements near the middle position of the first light-emitting array 400 and the light-emitting elements near the first light-emitting array 400 of the second light-emitting array 300 are selected to form the high-beam luminous area 120. The second high-speed lighting zone in the high-speed lighting zone 140 can use all the light-emitting elements of the second light-emitting array 300 to achieve long-distance illumination, and can also achieve the dual purpose of reducing glare and light pollution. In some cases, it can also form the first high-speed lighting zone together with the light-emitting elements near the middle position of the first light-emitting array 400 to achieve the upward movement and left and right concentration effects of the light beam.

[0058] Further, the external pads include a street lighting pad 250, a low beam pad 210, turning pads 231 and 232, a high beam pad 220, and a high-speed lighting pad 240 that are respectively and electrically connected to the street lighting light-emitting area 150, the low beam light-emitting area 110, the turning light-emitting areas 131 and 132, the high beam light-emitting area 120, and the high-speed lighting light-emitting area 140. Specifically, the external pads can correspond to each light-emitting area one by one. It can also be understood that when there are multiple sub-function light-emitting areas with fine-tuned functions in each corresponding light-emitting area, the external pads also have a one-to-one correspondence with the sub-function light-emitting areas. It can also be understood that when the high-speed lighting light-emitting area simultaneously includes a first high-speed lighting light-emitting area and a second high-speed lighting light-emitting area, the external pads also include a first high-speed lighting pad 141 and a second high-speed lighting pad 142 that are respectively and electrically connected to the first high-speed lighting light-emitting area and the second high-speed lighting light-emitting area.

[0059] Further, in a specific embodiment, the horizontally arranged first light-emitting array 400 includes fourteen horizontally arranged light-emitting elements 21-34, and the vertically arranged second light-emitting array 300 includes four light-emitting elements 35-37. These four light-emitting elements 35-37 are arranged in two rows and are aligned with two light-emitting elements 27 and 28 in the middle position of the first light-emitting array 400. It can be understood here that the first light-emitting array 400 and the second light-emitting array 300 arranged with the specific number of light-emitting elements form a light-emitting array arrangement in the shape of a character "pin". When the first light-emitting array 400 and the second light-emitting array 300 are arranged in a pyramid shape, the second light-emitting array 300 can be arranged in three layers, and the number of elements in the layer farther from the first light-emitting array 400 is less than that in the layer closer to the first light-emitting array 400. The positions of the light-emitting elements can be finely adjusted here to make the light-emitting directions of the light-emitting elements meet the requirements.

[0060] Further, on the basis of the above, the six light-emitting elements in the middle position of the first light-emitting array 400 constitute the low-beam light-emitting area 110; the six light-emitting elements of the first light-emitting array 400 close to the two sides constitute the turning light-emitting area; the four light-emitting elements close to the middle position of the first light-emitting array 400 and the two light-emitting elements close to the first light-emitting array 300 constitute the high-beam light-emitting area 120 together; the two light-emitting elements close to the middle position of the first light-emitting array 400 and all the light-emitting elements of the second light-emitting array 300 constitute the first high-speed lighting light-emitting area 140, and all the light-emitting elements of the second light-emitting array 300 constitute the second high-speed lighting light-emitting area 140. Specifically, on the basis of the above, the six light-emitting elements 25-30 in the middle position of the first light-emitting array 400 can be conductively connected to form a low-beam light-emitting area 110, the six light-emitting elements 21-26 in the left position of the first light-emitting array 400 can be conductively connected to form a left-turn light-emitting area 131, and the six light-emitting elements 29-34 in the right position of the first light-emitting array 400 can be conductively connected to form a right-turn light-emitting area 132. The two light-emitting elements 27-28 near the middle position of the first light-emitting array 400 can also be understood as two light-emitting elements aligned with the second light-emitting array 300, which together with the second light-emitting array 300 form a high-speed lighting light-emitting area 140, namely, a first high-speed lighting light-emitting area. In some embodiments, the high-speed lighting light-emitting area 140, namely, a second high-speed lighting light-emitting area, can be formed by conductively connecting the second light-emitting array 300 alone. In some embodiments, the high-speed lighting light-emitting area 140, namely, the first high-speed lighting light-emitting area and the second high-speed lighting light-emitting area, formed by these two situations can both exist. It can also be understood here that no matter the first light emitting array 400 and the second light emitting array 300 form a herringbone shape or a pyramid shape, the light emitting elements aligned with the first light emitting array 400 and the second light emitting array 300 all participate in forming the first high-speed lighting light emitting area.

[0061] Furthermore, in a multi-zone light source of the present invention, the light spectra of all the light emitting elements are the same or different from each other. Specifically, in the selection of light emitting elements, light emitting elements with different or the same light spectra can be selected as needed. For example, in one embodiment, the light emitting elements in the first light emitting array 400 and the second light emitting array 300 can use light emitting elements with the same or different light spectra. For example, in Figure 3In the illustrated embodiment, the two light emitting elements 35 and 36 of the second light emitting array 300 close to the first light emitting array 400 can be set as yellow light emitting elements, and the four light emitting elements 26-29 of the first light emitting array 400 close to the middle position can be white light emitting elements. It can be understood that among the four light emitting elements in the second light emitting array 300, the two light emitting elements close to the first light emitting array 400 at the bottom are yellow light emitting elements, which can greatly enhance the visual distance of the high beam, and the four light emitting elements close to the middle position in the first light emitting array 400 are white light emitting elements, which can greatly improve the illumination level of the low beam. It can also be understood that all the light emitting elements in the first light emitting array 400 can be white light emitting elements, and all the light emitting elements in the second light emitting array 300 can be yellow light emitting elements.

[0062] Furthermore, the light emitting element is one or more of a light emitting chip, LED, and cspled; the light emitting chip is one or more of a face-mounted chip, a flip chip, a vertical chip, and a thin film flip chip. Specifically, the light emitting element can be selected as needed. When it is a light emitting chip, different light emitting chips can be selected or combined as needed.

[0063] Further, the light-emitting chip is covered or wrapped by at least one photoluminescent layer, or there is at least one photoluminescent sheet on the light-emitting chip; the photoluminescent layer includes one or more of resin and silica gel, and the photoluminescent layer also includes one or more of phosphors and / or quantum dots; the photoluminescent sheet is one or more of ceramic-based photoluminescent sheets, glass-based photoluminescent sheets, resin-based photoluminescent sheets, and silica gel-based photoluminescent sheets, and the photoluminescent sheet also includes one or more of phosphors and / or quantum dots. In one embodiment, the light-emitting chip can be wrapped by at least one photoluminescent layer; the photoluminescent layer can be, but is not limited to, one or more combinations of silica gel, resin, glass glaze, ink, and coating. The photoluminescent layer can be doped with one or more phosphor layers, and the phosphors include, but are not limited to, one or more of YAG, nitride, fluoride, silicate, chlorosilicate, aluminate, nitrogen oxide, tungstate, molybdate, and sulfur oxide. In another embodiment, a photoluminescent sheet may be disposed above the light-emitting chip. The photoluminescent sheet may be one or more of a ceramic-based photoluminescent sheet, a glass-based photoluminescent sheet, a resin-based photoluminescent sheet, and a silicone-based photoluminescent sheet. The photoluminescent sheet may contain one or more fluorescent powders.

[0064] Further, on the basis of the above, there is at least one light shielding layer on the photoluminescent layer; the light shielding layer is provided with at least one opening to expose part of the photoluminescent layer; or, there is at least one transparent filling layer and / or adhesive layer between the photoluminescent sheet and the light-emitting chip. Specifically, when the photoluminescent layer is used, at least one light shielding layer can be provided on the photoluminescent layer. The light shielding layer is provided with at least one opening to expose part of the photoluminescent layer. The material of the light shielding layer includes one or more combinations of aluminum and its alloys, gold and its alloys, silver and its alloys, nickel and its alloys, titanium and its alloys, glass glaze, ink, liquid glass, paint, titanium oxide, zinc oxide, silicon oxide, aluminum nitride, silicon nitride and aluminum oxide. Alternatively, the material of the light shielding layer includes one or more combinations of silica gel, resin, liquid glass, glass glaze, ink and paint, and is doped with inorganic powder; the inorganic powder includes one or more combinations of glass powder, ceramic powder, metal powder, alloy powder, oxide powder and nitride powder with micron, submicron and nanometer particle sizes. When a photoluminescent sheet is used, at least one transparent filling layer and / or adhesive layer may be provided between the photoluminescent sheet and the light-emitting chip.

[0065] The multi-zone light source of the present invention further comprises at least one dam; the dam is arranged at the periphery of the light-emitting array, and the photoluminescent layer or the photoluminescent sheet is located inside the dam. Specifically, the dam can be arranged at the periphery of the light-emitting array, and the photoluminescent layer or the photoluminescent sheet is located inside the dam.

[0066] In addition, an insulating layer may be provided on the first surface of the substrate; the insulating layer may include one or more of silica gel, resin, glass glaze, liquid glass, ink and coating; and part or all of the external pads may be provided on the first surface and / or the second surface of the substrate. This may be provided as required to facilitate routing and installation.

[0067] Furthermore, the substrate can be a metal substrate or a ceramic substrate; when a ceramic substrate is used, the ceramic substrate can be set on a copper-clad metal circuit board; the second surface of the ceramic substrate is provided with at least one thermally conductive pad; part or all of the external pad is conductively connected to the corresponding external pad set on the copper-clad metal circuit board; the thermally conductive pad is connected to the thermally conductive pad set on the copper-clad metal circuit board.

[0068] A vehicle headlamp of the present invention comprises at least one multi-zone light source of any one of the above-described types, wherein the multi-zone light source is arranged on one side or both sides of the optical center point of the vehicle headlamp. It can be understood that the center point of the multi-zone light source is consistent with the optical center point in the vehicle headlamp, and when the multi-zone light source is installed in a dual-light lens type vehicle headlamp, the position of the various light-emitting zones is related to the optical center position of the vehicle headlamp so that when the light-emitting elements corresponding to each light-emitting zone are connected to an external power supply, the light emitted by the light-emitting elements in the light-emitting zone is formed through a reflective cup and / or a lens combination to meet the requirements of the vehicle headlamp. Figure 4 As shown, taking a specific vehicle headlight as an example, the vehicle headlight includes a lens E1, a high and low beam switching baffle, a high and low beam switching baffle motor, the two multi-zone light sources mentioned above, two reflective cups D1 and D2 corresponding to the light sources, a radiator, a control power supply and a whole lamp structure bracket C1; here the light source can be set on both sides of the bracket C1, for example, the light source on one side includes a light array B1 and a substrate A1, and the light source on the other side includes a light array B2 and a substrate A2, and the light source on each side corresponds to a reflective cup. By coordinating the control power supply with the multi-zone light source, in addition to standard high beam lighting and standard low beam lighting, one or more of urban street lighting, turning lighting, highway lighting, and rural road lighting can be achieved.

[0069] It can be understood that the above embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, the above technical features can be freely combined without departing from the concept of the present invention, and several deformations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should belong to the coverage of the claims of the present invention.

Claims

1. A multi-zone luminous light source, characterized in that: include: A substrate having a first surface and a second surface opposite to each other and a light emitting array disposed on the first surface of the substrate; The light-emitting array includes a plurality of light-emitting elements, and the light-emitting elements are divided into a plurality of light-emitting areas. Each of the light-emitting areas includes at least one light-emitting element, and each of the light-emitting elements may belong to one or more light-emitting areas. The light-emitting elements belonging to different light-emitting areas are connected in series and / or in parallel with each other through conductive circuits and / or conductive metal wires arranged on the substrate, each light-emitting area corresponds to at least one external soldering pad, and each light-emitting area is conductively connected to a corresponding external power source through the external soldering pad; The plurality of light-emitting areas at least include: a low-beam light-emitting area arranged at the lower side of the optical center of the light source to realize low-beam lighting, a high-beam light-emitting area arranged at the optical center of the light source to realize high-beam lighting, and a turning light-emitting area arranged at the left and right sides of the optical center of the light source to realize left and right turning lighting; The plurality of light-emitting areas further include a high-speed lighting light-emitting area arranged above the optical center of the light source and narrowing left and right, and / or a street lighting light-emitting area arranged below the optical center of the light source and widening left and right; The light-emitting array includes a first light-emitting array arranged horizontally, and a second light-emitting array arranged vertically on one side of the first light-emitting array, and the second light-emitting array is located close to the center of the first light-emitting array; all light-emitting elements of the first light-emitting array constitute the street lighting light-emitting area.

2. The multi-zone light source according to claim 1, characterized in that: The light emitting elements in the middle of the first light emitting array constitute the low beam light emitting area; The light-emitting elements of the first light-emitting array close to the two sides respectively constitute the turning light-emitting area; The light-emitting elements of the first light-emitting array close to the middle position and the light-emitting elements of the second light-emitting array close to the first light-emitting array together constitute the high-beam light-emitting area; The high-speed lighting luminous area includes a first high-speed lighting luminous area and / or a second high-speed lighting luminous area. The light emitting elements near the middle of the first light emitting array and some of the light emitting elements near the first light emitting array of the second light emitting array constitute the first high-speed lighting light emitting area, or the light emitting elements near the middle of the first light emitting array and all the light emitting elements of the second light emitting array constitute the first high-speed lighting light emitting area; All the light emitting elements of the second light emitting array constitute the second high-speed lighting light emitting area, or part of the light emitting elements of the second light emitting array away from the first light emitting array constitute the second high-speed lighting light emitting area.

3. The multi-zone light source according to claim 2, characterized in that: The external solder pads include street lighting solder pads, low beam solder pads, turning solder pads, high beam solder pads and high-speed lighting solder pads which are electrically connected one-to-one with the street lighting luminous area, the low beam luminous area, the turning light luminous area, the high beam luminous area and the high-speed lighting luminous area.

4. The multi-zone light source according to claim 2, characterized in that: The first light emitting array comprises fourteen light emitting elements arranged laterally; The second light-emitting array includes four light-emitting elements arranged vertically on one side of the first light-emitting array, and the light-emitting elements of the second light-emitting array are aligned with the two light-emitting elements at the center of the first light-emitting array.

5. The multi-zone light source according to claim 4, characterized in that: The six light emitting elements in the middle of the first light emitting array constitute the low beam light emitting area; The six light-emitting elements of the first light-emitting array respectively close to the two sides constitute the turning light-emitting area; The four light-emitting elements of the first light-emitting array close to the middle position and the two light-emitting elements of the second light-emitting array close to the first light-emitting array together constitute the high-beam light-emitting area; The two light emitting elements near the middle of the first light emitting array and all the light emitting elements of the second light emitting array constitute the first high-speed lighting light emitting area; All the light emitting elements of the second light emitting array constitute the second high-speed lighting light emitting area.

6. The multi-zone light source according to claim 1, characterized in that: The light emitting spectra of the light emitting elements are the same as or different from each other.

7. The multi-zone light source according to claim 1, characterized in that: The light-emitting element is one or more of a light-emitting chip, an LED, and a cspled; The light emitting chip is one or more of a face-up chip, a flip chip, a vertical chip, and a thin film flip chip.

8. The multi-zone light source according to claim 7, characterized in that: The light-emitting chip is covered or wrapped by at least one photoluminescent layer, or there is at least one photoluminescent sheet on the light-emitting chip; The photoluminescent layer comprises one or more of resin and silica gel, and the photoluminescent layer further comprises one or more of phosphor and / or quantum dots; The photoluminescent sheet is one or more of a ceramic-based photoluminescent sheet, a glass-based photoluminescent sheet, a resin-based photoluminescent sheet, and a silica-based photoluminescent sheet, and the photoluminescent sheet further comprises one or more of fluorescent powder and / or quantum dots.

9. The multi-zone light source according to claim 8, characterized in that: At least one light shielding layer is provided on the photoluminescent layer; at least one opening is provided on the light shielding layer to expose a portion of the photoluminescent layer; or There is at least one transparent filling layer and / or bonding layer between the photoluminescent sheet and the light-emitting chip.

10. The multi-zone light source according to claim 8, characterized in that: The invention also comprises at least one dam; the dam is arranged at the periphery of the light-emitting array, and the photoluminescent layer or the photoluminescent sheet is located inside the dam.

11. The multi-zone light source according to claim 1, characterized in that: The first surface of the substrate is provided with an insulating reflective layer; the insulating reflective layer comprises one or more of silica gel, resin, glass glaze, liquid glass, ink and coating; and / or Part or all of the external pads are disposed on the first surface and / or the second surface of the substrate.

12. The multi-zone light source according to claim 1, characterized in that: The substrate is a metal substrate or a ceramic substrate; The ceramic substrate is arranged on a copper-clad metal circuit board; at least one heat-conducting pad is arranged on the second surface of the ceramic substrate; Part or all of the external soldering pads are conductively connected to corresponding external soldering pads disposed on the copper-clad metal circuit board; The thermally conductive pad is connected to a thermally conductive pad arranged on the copper-clad metal circuit board.

13. A vehicle headlamp, characterized in that: It comprises at least one multi-zone luminous light source as described in any one of claims 1 to 12; the multi-zone luminous light source is arranged on one side or both sides of the optical center point of the vehicle headlight.

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