Dual-color temperature light source module and lighting device

Abstract

The utility model belongs to the field of photographic lighting, and discloses a dual color temperature light source module and a lighting device. A dual color temperature light source module includes: a light-emitting chip; a substrate, on which a light-emitting area is arranged; in the dual color temperature partition, a plurality of high color temperature white light chips and a plurality of low color temperature white light chips are arranged alternately along the first direction; the single color temperature partition is a high color temperature partition or a low color temperature partition, and in the second sub-light-emitting area, a plurality of high color temperature partitions and a plurality of low color temperature partitions are arranged alternately along the second direction; in the high color temperature partition, a plurality of high color temperature white light chips are arranged continuously along the first direction; in the low color temperature partition, a plurality of low color temperature white light chips are arranged continuously along the first direction. A lighting device includes the above-mentioned dual color temperature light source module. The dual color temperature light source module in the utility model can achieve uniform light mixing and good light spot quality. The lighting device in the utility model uses a dual color temperature light source module to achieve uniform light mixing and good light spot quality.

Description

Technical Field

[0001] The utility model relates to the field of photographic lighting, and in particular to a dual-color temperature light source module and a lighting device. Background Art

[0002] Color temperature is a unit of measurement that indicates the color components contained in light, and the unit of measurement is "K" (Kelvin). Below 3300K is a low color temperature, 3300K to 5300K is an intermediate color temperature, and above 5300K is a high color temperature. The light emitted by low color temperature is reddish and warmer. Most warm light is at this color temperature, and the light of this color temperature gives people a warm and comfortable feeling; the so-called warm white light and natural white are all in the range of intermediate color temperature; usually cool white belongs to the high color temperature range, and the light in this color temperature range can increase people's alertness. High color temperature is mostly matched with higher illumination, and the light is bright.

[0003] In order to solve the technical problem that the color temperature of a single-color light source module cannot be adjusted, the existing technology adopts a technical solution of mixing a high color temperature white light chip with a low color temperature white light chip to achieve adjustable color temperature of the light source module. However, the current dual color temperature arrangement technical solution has problems of uneven light mixing and poor light spot quality. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, one of the purposes of the utility model is to provide a dual-color temperature light source module, wherein a first sub-light-emitting area is arranged on opposite sides of a second sub-light-emitting area, and in the dual-color temperature partitions of the first sub-light-emitting area, a plurality of high color temperature white light chips and a plurality of low color temperature white light chips are alternately arranged along a first direction, and in the second sub-light-emitting area, a plurality of high color temperature partitions and a plurality of low color temperature partitions are alternately arranged along a second direction; in the high color temperature partitions of the second sub-light-emitting area, a plurality of high color temperature white light chips are continuously arranged along the first direction, and in the low color temperature partitions of the second sub-light-emitting area, a plurality of low color temperature white light chips are continuously arranged along the first direction; the above arrangement is conducive to the dense arrangement of high color temperature white light chips in the high color temperature partitions and the dense arrangement of low color temperature white light chips in the low color temperature partitions, and the entire dual-color temperature light source module can achieve uniform light mixing and good light spot quality.

[0005] The second purpose of the utility model is to provide a lighting device, which uses a dual-color temperature light source module to achieve uniform light mixing and good light spot quality.

[0006] One of the purposes of the utility model is achieved by the following technical solution:

[0007] A dual color temperature light source module, comprising:

[0008] A light-emitting chip, which is a high color temperature white light chip or a low color temperature white light chip;

[0009] A substrate, on which a light-emitting area is arranged, the light-emitting area includes a first sub-light-emitting area and a second sub-light-emitting area, and the first sub-light-emitting area is arranged on two opposite sides of the second sub-light-emitting area;

[0010] A plurality of dual-color temperature partitions are arranged on the first sub-light emitting area, in which a plurality of high-color temperature white light chips and a plurality of low-color temperature white light chips are alternately arranged along a first direction;

[0011] A plurality of single color temperature partitions are arranged on the second sub-light emitting area, and the single color temperature partitions are high color temperature partitions or low color temperature partitions. In the second sub-light emitting area, the plurality of high color temperature partitions and the plurality of low color temperature partitions are alternately arranged along the second direction;

[0012] In the high color temperature partition, a plurality of high color temperature white light chips are arranged continuously along a first direction; in the low color temperature partition, a plurality of low color temperature white light chips are arranged continuously along the first direction.

[0013] In a preferred embodiment, in the first sub-light-emitting area, a plurality of dual-color temperature subareas are arranged along the second direction.

[0014] In a preferred embodiment, in two adjacent dual-color temperature partitions, if the light-emitting chip at the end of one of the dual-color temperature partitions is a high-color temperature white light chip, the light-emitting chip at the corresponding end of the other dual-color temperature partition is a low-color temperature white light chip;

[0015] In two adjacent dual-color temperature partitions, if the light-emitting chip at the end of one dual-color temperature partition is a low color temperature white light chip, the light-emitting chip at the corresponding end of the other dual-color temperature partition is a high color temperature white light chip.

[0016] In a preferred embodiment, if the single-color temperature zone at the edge of the second sub-light-emitting area is a high color temperature zone, the light-emitting chip at the end of the dual-color temperature zone adjacent to the single-color temperature zone at the edge of the second sub-light-emitting area is a low color temperature white light chip;

[0017] If the single color temperature partition at the edge of the second sub-light emitting area is a low color temperature partition, the light emitting chip at the end of the dual color temperature partition adjacent to the single color temperature partition at the edge of the second sub-light emitting area is a high color temperature white light chip.

[0018] In a preferred embodiment, the light emitting area is circular, square or rectangular.

[0019] In a preferred embodiment, the first sub-light-emitting areas are symmetrically arranged on opposite sides of the second sub-light-emitting area.

[0020] In a preferred embodiment, the width of the light-emitting area in the second direction is 2r, and the width of the second sub-light-emitting area in the second direction ranges from r to 1.5r.

[0021] In a preferred embodiment, the first direction and the second direction are perpendicular to each other.

[0022] In a preferred embodiment, the base body includes a first substrate and a second substrate, the first substrate is stacked on the second substrate, and the plug-in terminal is disposed on the second substrate.

[0023] The second purpose of the utility model is achieved by the following technical solution:

[0024] A lighting device comprises the above-mentioned dual-color temperature light source module.

[0025] In summary, the utility model has the following technical effects: the utility model is provided with a first sub-light-emitting area on both sides of the opposite sides of the second sub-light-emitting area, and in the dual-color temperature partition of the first sub-light-emitting area, multiple high color temperature white light chips and multiple low color temperature white light chips are alternately arranged along the first direction, and in the second sub-light-emitting area, multiple high color temperature partitions and multiple low color temperature partitions are alternately arranged along the second direction; in the high color temperature partition of the second sub-light-emitting area, multiple high color temperature white light chips are continuously arranged along the first direction, and in the low color temperature partition of the second sub-light-emitting area, multiple low color temperature white light chips are continuously arranged along the first direction; the above arrangement is conducive to the dense arrangement of high color temperature white light chips in the high color temperature partition and the dense arrangement of low color temperature white light chips in the low color temperature partition, and the entire dual-color temperature light source module can achieve uniform light mixing and good light spot quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a top view of the light emitting area of ​​the dual color temperature light source module embodiment of the utility model;

[0027] Figure 2 For the utility model embodiment Figure 1 A schematic diagram of the structure without some high color temperature white light chips and low color temperature white light chips;

[0028] Figure 3 It is a side view schematic diagram of the base body of the dual-color temperature light source module embodiment of the utility model.

[0029] The meanings of the reference numerals are as follows:

[0030] 10. High color temperature white light chip, 20. Low color temperature white light chip, 30. Base, 301. First substrate, 302. Second substrate, 303. Plug terminal, 40. Light-emitting area, 401. First sub-light-emitting area, 402. Second sub-light-emitting area. DETAILED DESCRIPTION

[0031] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0034] See also Figure 1-Figure 3 The utility model discloses a dual color temperature light source module, comprising: a light emitting chip, the light emitting chip is a high color temperature white light chip 10 or a low color temperature white light chip 20; a substrate 30, a light emitting area 40 is arranged on the substrate 30, the light emitting area 40 includes a first sub-light emitting area 401 and a second sub-light emitting area 402, and the first sub-light emitting area 401 is arranged on opposite sides of the second sub-light emitting area 402; a plurality of dual color temperature partitions are arranged on the first sub-light emitting area 401, in which a plurality of high color temperature white light chips 10 and a plurality of low color temperature white light chips 20 are arranged alternately along a first direction; a plurality of single color temperature partitions are arranged on the second sub-light emitting area 402, and the single color temperature partitions are high color temperature partitions or low color temperature partitions, and in the second sub-light emitting area 402, a plurality of high color temperature partitions and a plurality of low color temperature partitions are arranged alternately along a second direction; in the high color temperature partitions, a plurality of high color temperature white light chips 10 are arranged continuously along the first direction; in the low color temperature partitions, a plurality of low color temperature white light chips 20 are arranged continuously along the first direction.

[0035] Based on the above structure, the utility model is provided with a first sub-light-emitting area 401 on opposite sides of the second sub-light-emitting area 402. In the dual-color temperature partition of the first sub-light-emitting area 401, multiple high color temperature white light chips 10 and multiple low color temperature white light chips 20 are alternately arranged along the first direction, and in the second sub-light-emitting area 402, multiple high color temperature partitions and multiple low color temperature partitions are alternately arranged along the second direction; in the high color temperature partition of the second sub-light-emitting area 402, multiple high color temperature white light chips 10 are continuously arranged along the first direction, and in the low color temperature partition of the second sub-light-emitting area 402, multiple low color temperature white light chips 20 are continuously arranged along the first direction; the above arrangement is conducive to the dense arrangement of the high color temperature white light chips 10 in the high color temperature partition and the dense arrangement of the low color temperature white light chips 20 in the low color temperature partition, and the entire dual-color temperature light source module can achieve uniform light mixing and good light spot quality.

[0036] It should be noted that the high color temperature white light chip 10 and the low color temperature white light chip 20 are blue light chips that achieve different color temperatures by matching different phosphors. If the high color temperature white light chip 10 and the low color temperature white light chip 20 are arranged alternately along a certain direction, a certain distance needs to be reserved between the high color temperature white light chip 10 and the low color temperature white light chip 20, so as to facilitate the dispensing process so that the high color temperature white light chip 10 and the low color temperature white light chip 20 can be coated with corresponding phosphors respectively, and avoid mutual crosstalk between different phosphors. If the high color temperature white light chip 10 or the low color temperature chip 20 are arranged continuously along a certain direction, the spacing between chips of the same type can be set to be smaller, because the phosphors are of the same type and will not crosstalk with each other, so the arrangement can be relatively dense, that is, more light-emitting chips can be arranged, so that higher brightness can be achieved.

[0037] That is, in the low color temperature partition or high color temperature partition of the second sub-light-emitting area 402, since there is no phosphor crosstalk problem when dispensing multiple high color temperature white light chips 10 or multiple low color temperature white light chips 20, multiple high color temperature white light chips 10 can be densely arranged, and multiple low color temperature white light chips 20 can be densely arranged, so it can at least ensure that the second sub-light-emitting area 402 can achieve a higher brightness. Moreover, the continuous arrangement is also more conducive to the layout and routing of the high color temperature white light chips 10 and the low color temperature white light chips 20 in the second sub-light-emitting area 40.

[0038] Compared with the manner in which multiple high color temperature white light chips 10 and multiple low color temperature white light chips 20 are arranged in a mosaic manner in the entire light-emitting area 40, in the light-emitting area 40 of the same area, the arrangement of high color temperature white light chips 10 and low color temperature white light chips 20 in the dual color temperature light source module can be used to set a larger number of high color temperature white light chips 10 and low color temperature white light chips 20, which is conducive to forming a better quality light spot; compared with the manner in which the entire light-emitting area 40 is alternately arranged with high color temperature partitions and low color temperature partitions, the manner in which dual color temperature partitions, high color temperature partitions and low color temperature partitions are arranged in the dual color temperature light source module has a better light mixing effect and a better quality light spot is obtained.

[0039] In the embodiment of the present utility model, in the first sub-light emitting area 401, a plurality of dual-color temperature subareas are arranged along the second direction.

[0040] See also Figure 2In an embodiment of the utility model, in two adjacent dual-color temperature partitions, if the light-emitting chip located at the end of one of the dual-color temperature partitions is a high color temperature white light chip 10, the light-emitting chip at the corresponding end of the other dual-color temperature partition is a low color temperature white light chip 20; in two adjacent dual-color temperature partitions, if the light-emitting chip located at the end of one of the dual-color temperature partitions is a low color temperature white light chip 20, the light-emitting chip at the corresponding end of the other dual-color temperature partition is a high color temperature white light chip 10; this arrangement can avoid the continuous arrangement of two high color temperature white light chips 10 or two low color temperature white light chips 20 at the outer edge of the light-emitting area 40, which is beneficial to the mixed light effect.

[0041] Continue reading Figure 2 In the embodiment of the utility model, if the single-color temperature zone located at the edge of the second sub-light-emitting area 402 is a high color temperature zone, the light-emitting chip at the end of the dual-color temperature zone adjacent to the single-color temperature zone at the edge of the second sub-light-emitting area 402 is a low color temperature white light chip 20; if the single-color temperature zone located at the edge of the second sub-light-emitting area 402 is a low color temperature zone, the light-emitting chip at the end of the dual-color temperature zone adjacent to the single-color temperature zone at the edge of the second sub-light-emitting area 402 is a high color temperature white light chip 10; this arrangement can avoid the continuous arrangement of two high color temperature white light chips 10 or two low color temperature white light chips 20 at the outer edge of the light-emitting area 40, which is beneficial to the mixed light effect.

[0042] It should be noted that the dual color temperature partitions, high color temperature partitions and low color temperature partitions are all strip-shaped, the end of the dual color temperature partition refers to its end set along the first direction, the end of the high color temperature partition refers to its end set along the first direction, and the end of the low color temperature partition refers to its end set along the first direction. The length of each dual color temperature partition in the first direction, the length of each high color temperature partition in the first direction and the length of each low color temperature partition in the first direction are different or the same, and their specific lengths in the first direction depend on the specific shape of the light-emitting area 40.

[0043] In the embodiment of the present invention, the light emitting area 40 is circular, square or rectangular.

[0044] See also Figure 1-Figure 2 Taking the circular light-emitting area 40 as an example, the light-emitting area 40 is divided into three sub-light-emitting areas 40 in sequence along the radial direction, namely the first sub-light-emitting area 401 and the second sub-light-emitting area 402; compared with the outer edge of the ring-shaped light-emitting area 40 being a plurality of high color temperature white light chips 10 continuously arranged or a plurality of low color temperature white light chips 20 continuously arranged, the outer edge of the ring-shaped light-emitting area 40 being a plurality of high color temperature white light chips 10 and a plurality of low color temperature white light chips 20 alternately arranged, the mixing effect is better.

[0045] Further, see Figure 1The light-emitting area 40 of the dual-color temperature light source module is formed into several annular parts along the direction from the outer edge to the center of the circle, and the several annular parts are nested. Each annular part includes multiple high color temperature white light chips 10 and multiple low color temperature white light chips 20. The annular part located at the outer edge of the light-emitting area 40 is composed of multiple high color temperature white light chips 10 and multiple low color temperature white light chips 20 alternately arranged, and the remaining annular parts are approximately composed of multiple high color temperature white light chips 10 and multiple low color temperature white light chips 20 alternately arranged. Due to the setting of the second sub-light-emitting area 402, the remaining annular parts have two high color temperature white light chips 10 continuously arranged or two low color temperature white light chips 20 continuously arranged, avoiding the situation where three high color temperature white light chips 10 are continuously arranged or three low color temperature white light chips 20 are continuously arranged, so as to achieve uniform color mixing of the dual color temperature light source module and ensure the quality of the light spot.

[0046] In the embodiment of the utility model, the first sub-light-emitting areas 401 are symmetrically arranged on opposite sides of the second sub-light-emitting area 402; thus, the two first sub-light-emitting areas 401 are symmetrically arranged, which is beneficial to the uniform light mixing of the dual-color temperature light source module to obtain a light spot with better quality.

[0047] In the embodiment of the utility model, the edges of the second sub-light-emitting area 402 close to the first sub-light-emitting area 401 are arranged with low color temperature rows or high color temperature rows, so as to avoid the situation where one side of the edge of the second sub-light-emitting area 402 close to the first sub-light-emitting area 401 is a low color temperature row and the other side of the edge of the second sub-light-emitting area 402 close to the first sub-light-emitting area 401 is a high color temperature row, thereby ensuring the overall uniform light mixing of the dual-color temperature light source module.

[0048] In the embodiment of the present invention, the width of the light emitting area 40 in the second direction is 2r, and the width of the second sub-light emitting area 402 in the second direction ranges from r to 1.5r.

[0049] It should be noted that the sum of the widths of all first sub-light-emitting areas 401 in the second direction and the widths of the second sub-light-emitting areas 402 in the second direction is equal to the width of the light-emitting area 40 in the second direction; if the width range of the second sub-light-emitting area 402 in the second direction is too large or too small, it will affect the light mixing effect and the light spot quality of the dual-color temperature light source module; when the width range of the second sub-light-emitting area 402 in the second direction is too large, the second sub-light-emitting area 402 occupies a larger area of ​​the light-emitting area 40, and the number of high color temperature partitions and low color temperature partitions increases accordingly. When a large number of high color temperature partitions and low color temperature partitions are lit, the boundary between high color temperature and low color temperature in the dual-color temperature light source module is more obvious, which affects the uniformity of light mixing and the light spot quality; When the width range of the sub-light-emitting area 402 in the second direction is too small, the first sub-light-emitting area 401 occupies a larger area of ​​the light-emitting area 40, and the number of dual-color temperature partitions increases accordingly. In order to ensure that the required phosphors are covered on the high color temperature white light chip 10 and the low color temperature white light chip 20, a sufficiently large spacing needs to be ensured between the high color temperature white light chip 10 and the low color temperature white light chip 20, so as to realize the dispensing process of the high color temperature white light chip 10 and the low color temperature white light chip 20, that is, to avoid phosphor crosstalk during dispensing by controlling the spacing. For the dual-color temperature light source module with the same area of ​​the light-emitting area 40, the width range of the second sub-light-emitting area 402 in the second direction is too small, which is not conducive to the arrangement of more high color temperature white light chips 10 and low color temperature white light chips 20.

[0050] Thus, preferably, the width of the second sub-light-emitting area 402 in the second direction is r, which is beneficial to uniform light mixing of the dual-color temperature light source module and obtains a light spot of better quality while ensuring the installation density of the high color temperature white light chip 10 and the low color temperature white light chip 20.

[0051] In the embodiment of the present utility model, the first direction and the second direction are perpendicular to each other; Figure 1-Figure 2 Taking the light emitting area 40 as a circle as an example, the first direction and the second direction are both diameter directions of the light emitting area 40 .

[0052] In the embodiment of the utility model, the base 30 includes a first substrate 301 and a second substrate 302 . The first substrate 301 is stacked on the second substrate 302 . The second substrate 302 is provided with a plug-in terminal 303 .

[0053] Specifically, the first substrate 301 is a ceramic substrate, and the second substrate 302 is a copper substrate. Of course, in other application scenarios, the first substrate 301 and the second substrate 302 can also be substrates of other materials, depending on actual conditions and are not limited thereto.

[0054] It should be noted that the first substrate 301 and the second substrate 302 can be fixedly connected by an adhesive process or a welding process. How to achieve electrical connection between the first substrate 301, the second substrate 302, the plug terminal 303, the high color temperature white light chip 10 and the low color temperature white light chip 20 is an existing technology and will not be repeated here.

[0055] The utility model also discloses a lighting device, comprising the above-mentioned dual-color temperature light source module.

[0056] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A dual color temperature light source module, characterized in that ,include: A light-emitting chip, wherein the light-emitting chip is a high color temperature white light chip (10) or a low color temperature white light chip (20); A substrate (30), wherein a light-emitting area (40) is arranged on the substrate (30), wherein the light-emitting area (40) comprises a first sub-light-emitting area (401) and a second sub-light-emitting area (402), and the first sub-light-emitting area (401) is arranged on opposite sides of the second sub-light-emitting area (402); A plurality of dual-color temperature partitions are provided on the first sub-light-emitting area (401), and in the dual-color temperature partitions, a plurality of the high-color temperature white light chips (10) and a plurality of the low-color temperature white light chips (20) are alternately arranged along a first direction; The second sub-light-emitting area (402) is provided with a plurality of single-color temperature partitions, the single-color temperature partitions being high color temperature partitions or low color temperature partitions, and in the second sub-light-emitting area (402), the plurality of high color temperature partitions and the plurality of low color temperature partitions are alternately arranged along a second direction; In the high color temperature partition, a plurality of the high color temperature white light chips (10) are arranged continuously along the first direction; and in the low color temperature partition, a plurality of the low color temperature white light chips (20) are arranged continuously along the first direction.

2. The dual color temperature light source module according to claim 1, characterized in that: In the first sub-light emitting area (401), a plurality of the dual-color temperature partitions are arranged along the second direction.

3. The dual color temperature light source module according to claim 1, characterized in that: In two adjacent dual-color temperature partitions, if the light-emitting chip located at the end of one of the dual-color temperature partitions is a high-color temperature white light chip (10), then the light-emitting chip at the corresponding end of the other dual-color temperature partition is a low-color temperature white light chip (20); In two adjacent dual-color temperature partitions, if the light-emitting chip located at the end of one of the dual-color temperature partitions is a low-color-temperature white-light chip (20), the light-emitting chip at the corresponding end of the other dual-color-temperature partition is a high-color-temperature white-light chip (10).

4. The dual color temperature light source module according to claim 3, characterized in that: If the single-color temperature zone located at the edge of the second sub-light-emitting zone (402) is the high color temperature zone, then the light-emitting chip at the end of the dual-color temperature zone adjacent to the single-color temperature zone at the edge of the second sub-light-emitting zone (402) is a low color temperature white light chip (20); If the single-color temperature partition located at the edge of the second sub-light-emitting area (402) is the low color temperature partition, then the light-emitting chip at the end of the dual-color temperature partition adjacent to the single-color temperature partition at the edge of the second sub-light-emitting area (402) is a high color temperature white light chip (10).

5. The dual color temperature light source module according to claim 1, characterized in that: The light emitting area (40) is circular, square or rectangular.

6. The dual color temperature light source module according to claim 1, characterized in that: The first sub-light-emitting areas (401) are symmetrically arranged on opposite sides of the second sub-light-emitting area (402).

7. The dual color temperature light source module according to claim 6, characterized in that: The width of the light-emitting area (40) in the second direction is 2r, and the width of the second sub-light-emitting area (402) in the second direction ranges from r to 1.5r.

8. The dual color temperature light source module according to claim 1, characterized in that: The first direction and the second direction are perpendicular to each other.

9. The dual color temperature light source module according to claim 1, characterized in that: The base (30) comprises a first substrate (301) and a second substrate (302); the first substrate (301) is stacked on the second substrate (302); and the second substrate (302) is provided with a plug-in terminal (303).

10. A lighting device, characterized in that: It comprises the dual color temperature light source module as claimed in any one of claims 1 to 9.

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