Annular light source with adjustable color temperature
By adopting the electrical connection of the basic light source and the ring light source and the flip-chip LED chip structure in the light source group, the problems of uneven light spot and uneven brightness are solved, and the uniformity and brightness of the light spot are improved.
Patent Information
- Application Number
- CN202422980697.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-12-03
AI Technical Summary
Existing adjustable color temperature light sources have the problem of gaps between light sources of different color temperatures, resulting in uneven light spots or uneven brightness.
A light source group is set on the substrate, including a basic light source and a ring light source arranged outside the basic light source. The two are electrically connected through the N electrode and the P electrode. A flip-chip LED chip structure is adopted to adjust the current power and the thickness of the fluorescent layer to achieve different color temperature conversion and reduce light obstruction and spacing.
The uniformity and brightness of the light spot are improved, and the effective light output and continuously adjustable color temperature effect are improved through the flip-chip LED chip structure.
Smart Images
Figure CN223318978U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of color temperature adjustable light sources, and in particular to a color temperature adjustable ring light source. Background Art
[0002] Traditional LED light sources have a single color temperature design, which is related to the light-emitting principle of the light source. The light source itself can only emit a single color temperature between 2700K and 6400K according to the light-emitting principle when it is designed, and cannot be continuously adjusted from the low end (3000K) to the high end (6000K). Currently, two single light sources with different high and low color temperatures are often integrated to achieve various color temperature changes. However, the gap between the single light sources will result in uneven light spots.
[0003] Therefore, existing adjustable color temperature light sources have problems such as intervals between light sources with different color temperatures, and uneven light spots or uneven brightness. Utility Model Content
[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of this application is to provide an adjustable color temperature ring light source, aiming to solve the problems of existing adjustable color temperature light sources such as gaps between light sources of different color temperatures and uneven light spots.
[0005] The technical solution adopted by the present application to solve the technical problem is as follows: providing an adjustable color temperature ring light source, including: a substrate; a light source group, the light source group being arranged on the substrate; the light source group including a basic light source and a ring light source arranged outside the basic light source; the basic light source is provided with a basic P electrode and a basic N electrode, the basic P electrode and the basic N electrode being electrically connected; the ring light source is provided with a ring P electrode and a ring N electrode, the ring P electrode and the ring N electrode being electrically connected; the color temperature of the basic light source is different from the color temperature of the ring light source; the basic light source and the ring light source are both flip-chip LED chip structures.
[0006] Optionally, the annular light source includes a first annular light source and a second annular light source, the first annular light source is arranged on the outside of the basic light source, and the second annular light source is arranged on the outside of the first annular light source; the annular P electrode includes a first P electrode and a second P electrode, and the annular N electrode includes a first N electrode and a second N electrode; the first P electrode and the first N electrode are both connected to the first annular light source, and the first P electrode and the first N electrode are electrically connected; the second P electrode and the second N electrode are both connected to the second annular light source, and the second P electrode and the second N electrode are electrically connected; the color temperature of the basic light source is different from the color temperature of the first annular light source, or the color temperature of the basic light source is different from the color temperature of the second annular light source.
[0007] Optionally, the basic light source includes a basic fluorescent layer, the first ring-shaped light source includes a first fluorescent layer, and the second ring-shaped light source includes a second fluorescent layer; the thickness of the basic fluorescent layer is different from the thickness of the first fluorescent layer, or the thickness of the basic fluorescent layer is different from the thickness of the second fluorescent layer.
[0008] Optionally, phosphor powder is provided in the basic phosphor layer, the first phosphor layer and the second phosphor layer, and the thickness of the phosphor powder in the basic phosphor layer is different from that in the first phosphor layer, or the thickness of the phosphor powder in the basic phosphor layer is different from that in the second phosphor layer.
[0009] Optionally, the basic light source further includes a basic light-emitting layer, the basic P electrode and the basic N electrode are both located on the basic light-emitting layer, and the basic fluorescent layer is located above the basic light-emitting layer; the first ring-shaped light source further includes a first light-emitting layer, the first P electrode and the first N electrode are both located on the first light-emitting layer, and the first fluorescent layer is located above the first light-emitting layer; the second ring-shaped light source further includes a second light-emitting layer, the second P electrode and the second N electrode are both located on the second light-emitting layer, and the second fluorescent layer is located above the second light-emitting layer.
[0010] Optionally, the thickness of the basic light-emitting layer is different from the thickness of the first light-emitting layer, or the thickness of the basic light-emitting layer is different from the thickness of the second light-emitting layer.
[0011] Optionally, the basic light source further includes a basic P epitaxial layer and a basic N epitaxial layer, the basic P electrode is located in the basic P epitaxial layer, the basic N electrode is located in the basic N epitaxial layer, the basic P epitaxial layer covers the lower surface of the basic light-emitting layer, the basic N epitaxial layer covers the upper surface of the basic light-emitting layer, and the basic fluorescent layer is located above the basic N epitaxial layer; the first ring-shaped light source further includes a first P epitaxial layer and a first N epitaxial layer, the first P electrode is located in the first P epitaxial layer, the first N electrode is located in the first N epitaxial layer, the first P epitaxial layer covers the lower surface of the first light-emitting layer, the first N epitaxial layer covers the upper surface of the first light-emitting layer, and the first fluorescent layer is located above the first N epitaxial layer; the second ring-shaped light source further includes a second P epitaxial layer and a second N epitaxial layer, the second P electrode is located in the second P epitaxial layer, the second N electrode is located in the second N epitaxial layer, the second P epitaxial layer covers the lower surface of the second light-emitting layer, the second N epitaxial layer covers the upper surface of the second light-emitting layer, and the second fluorescent layer is located above the second N epitaxial layer.
[0012] Optionally, a basic gap is provided between the basic light-emitting layer and the basic N epitaxial layer, and the basic P electrode is electrically connected to the basic N electrode through the basic gap; a first gap is provided between the first light-emitting layer and the first N epitaxial layer, and the first P electrode is electrically connected to the first N electrode through the first gap; a second gap is provided between the second light-emitting layer and the second N epitaxial layer, and the second P electrode is electrically connected to the second N electrode through the second gap.
[0013] Optionally, the ring-shaped light source further includes a third ring-shaped light source, up to an Xth ring-shaped light source; the first ring-shaped light source, the second ring-shaped light source, the third ring-shaped light source, up to the Xth ring-shaped light source, a total of X; the third ring-shaped light source is arranged outside the second ring-shaped light source, and so on, the Xth ring-shaped light source is arranged outside the X-1th ring-shaped light source; the color temperature of the Xth ring-shaped light source is different from the color temperature of the basic light source, or the color temperature of the Xth ring-shaped light source is different from the color temperature of the X-1th ring-shaped light source.
[0014] Optionally, the color temperature adjustable annular light source further includes a lens, and the lens is arranged above the light source group.
[0015] Compared with the prior art, the present application provides an adjustable color temperature ring light source including a substrate and a light source group arranged on the substrate, the light source group including a basic light source and a ring light source arranged outside the basic light source, the basic light source and the ring light source are electrically connected through their own N electrodes and P electrodes respectively, and can adjust the basic light source and the ring light source battery cells to be different or adjust the current power passing through their own N electrodes and P electrodes to make the color temperatures of the two different, thereby realizing various color temperature changes; at the same time, the basic light source and the ring light source are both flip-chip LED chip structures, which can reduce light obstruction, and the arrangement of the two can reduce the distance between the two, improve the effective output of light, and enhance the brightness and uniformity of the light spot. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a cross-sectional view of the color temperature adjustable ring light source provided in this application;
[0017] Figure 2 is a cross-sectional view of another embodiment of the color temperature adjustable ring light source provided in this application;
[0018] Figure 3 is a cross-sectional view of another embodiment of the color temperature adjustable ring light source provided in this application;
[0019] Figure 4 is a cross-sectional view of the light source assembly provided in this application;
[0020] Figure 5 is a cross-sectional view of another embodiment of the light source assembly provided in this application;
[0021] Figure 6 is a top view of the color temperature adjustable ring light source provided in this application;
[0022] Figure 7 It is a top view of another embodiment of the color temperature adjustable ring light source provided in this application.
[0023] Description of reference numerals:
[0024] 1. Light source group; 11. Basic light source; 111. Basic light-emitting layer; 112. Basic P epitaxial layer; 113. Basic N epitaxial layer; 114. Basic fluorescent layer; 115. Basic gap; 12. First ring-shaped light source; 121. First light-emitting layer; 122. First P epitaxial layer; 123. First N epitaxial layer; 124. First fluorescent layer; 125. First gap; 13. Second ring-shaped light source; 131. Second light-emitting layer; 132. Second P epitaxial layer; 133. Second N epitaxial layer; 134. Second fluorescent layer; 135. Second gap; 14. Third ring-shaped light source; 15. Protective layer; 2. Substrate; 3. Protective shell; 4. Lens. DETAILED DESCRIPTION
[0025] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.
[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.
[0027] In the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.
[0028] In the description of this application, the N electrode is the negative electrode, and the P electrode is the positive electrode.
[0029] Combined with reference Figure 1 In the first embodiment of the present application, there is provided an adjustable color temperature ring light source, a substrate; a light source group 1, wherein the light source group 1 is arranged on the substrate; the light source group 1 includes a basic light source 11 and a ring light source arranged on the outside of the basic light source 11; the basic light source 11 is provided with a basic P electrode and a basic N electrode, and the basic P electrode and the basic N electrode are electrically connected; the ring light source is provided with a ring P electrode and a ring N electrode, and the ring P electrode and the ring N electrode are electrically connected; the color temperature of the basic light source 11 is different from the color temperature of the ring light source; the basic light source 11 and the ring light source are both flip-chip LED chip structures.
[0030] The electrical connection can be made by connecting an external power supply, thereby powering the basic light source 11 and the ring light source through the current supplied by the power supply, so that the N electrode and its corresponding P electrode (such as the basic P electrode and the basic N electrode, the ring P electrode and the ring N electrode) form a complete circuit. The color temperature of the basic light source 11 is different from the color temperature of the ring light source. Specifically, the color temperature of the basic light source 11 is Y, and the color temperature of the ring light source is W, and Y is not equal to W. The arrangement of the basic light source 11 and the ring light source can mix the light emitted by the basic light source 11 and the ring light source when they are illuminated, achieving a uniform luminous effect.
[0031] Compared to traditional upright LED wick structures, flip-chip LED chip structures provide a better heat conduction path, accelerating heat dissipation from the LED chip and increasing the lifespan and stability of the LED. They also reduce the optical impedance between the LED chip and the environment, improving light output efficiency, brightness, and brightness consistency (i.e., spot uniformity). Both the base light source 11 and the ring light source can be thin-film flip-chip LED chip structures, further increasing light output efficiency.
[0032] An adjustable color temperature ring light source in this embodiment includes a substrate and a light source group 1 arranged on the substrate. The light source group 1 includes a basic light source 11 and a ring light source arranged outside the basic light source 11. The basic light source 11 and the ring light source are electrically connected through their own N electrodes and P electrodes respectively. The basic light source 11 and the ring light source can be adjusted to be different in their battery cells or the current power passing through their own N electrodes and P electrodes can be adjusted to make the color temperatures of the two different, thereby realizing various color temperature changes; at the same time, the basic light source 11 and the ring light source are both flip-chip LED chip structures, which can reduce light obstruction. The arrangement of the two can reduce the interval between the two, improve the compactness between the basic light source 11 and the ring light source, improve the effective output of light, and enhance the brightness and uniformity of the light spot.
[0033] Specifically, both the basic light source 11 and the ring light source utilize a flip-chip LED chip structure. The basic light source 11 includes a basic light-emitting layer 111 and a basic fluorescent layer 114. A basic P electrode and a basic N electrode are connected to the basic light-emitting layer 111 to power the basic light-emitting layer 111. The basic fluorescent layer 114, located above the basic light-emitting layer 111, converts the light from the light-emitting layer into visible light and adjusts the light distribution to make it more uniform and consistent, thereby enhancing the light effect. Similarly, the ring light source includes a ring-shaped light-emitting layer and a ring-shaped fluorescent layer. The ring-shaped P electrode and the ring-shaped N electrode are connected to the ring-shaped light-emitting layer to power the ring-shaped light-emitting layer. The ring-shaped fluorescent layer is located above the ring-shaped light-emitting layer. The thickness and material of the basic light-emitting layer 111 can be adjusted to differ from that of the ring-shaped light-emitting layer, thereby varying the color temperature of the basic light source 11 from that of the ring-shaped light source. Furthermore, the thickness and material of the basic fluorescent layer 114 can also be adjusted to differ from that of the ring-shaped light-emitting layer, thereby varying the color temperature of the basic light source 11 from that of the ring-shaped light source.
[0034] In some embodiments, the annular light source includes a first annular light source 12 and a second annular light source 13, the first annular light source 12 is arranged on the outside of the basic light source 11, and the second annular light source 13 is arranged on the outside of the first annular light source 12; the annular P electrode includes a first P electrode and a second P electrode, and the annular N electrode includes a first N electrode and a second N electrode; the first P electrode and the first N electrode are both connected to the first annular light source 12, and the first P electrode and the first N electrode are electrically connected; the second P electrode and the second N electrode are both connected to the second annular light source 13, and the second P electrode and the second N electrode are electrically connected; the color temperature of the basic light source 11 is different from the color temperature of the first annular light source 12, or the color temperature of the basic light source 11 is different from the color temperature of the second annular light source 13.
[0035] The color temperature of the basic light source 11 can be adjusted to be different from the color temperature of the first ring light source 12 or the color temperature of the second ring light source 13, thereby achieving the effect of continuously adjustable color temperature of the light source. Specifically, the color temperature of the basic light source 11 and the ring light source (including the first ring light source 12 and the second ring light source 13) can be light sources with a color temperature of 2700K to 6400K that can be designed. For example, the color temperature of the basic light source 11 is the same as the color temperature of the second ring light source 13, both of which are Y, but different from the color temperature of the first ring light source 12. The color temperature of the first ring light source 12 is W, and Y is not equal to W. Both Y and W are within the range of 2700K-6400K. Figure 2 and Figure 6 Or, the color temperature of the basic light source 11 is the same as the color temperature of the second ring light source 13, both are W, but different from the color temperature of the first ring light source 12, the color temperature of the first ring light source 12 is Y, reference Figure 3 and Figure 6 .
[0036] The color temperature of the basic light source 11 can differ from that of both the first ring light source 12 and the second ring light source 13. By increasing the color temperature from the inside outward (i.e., from the basic light source 11 toward the ring light source), or decreasing from the inside outward, a gradual light mixing effect is achieved, thereby improving the uniformity of the light spot. Specifically, the color temperature difference between adjacent light sources is 500K or less, which can achieve a smoother and more continuous light transition.
[0037] The material or thickness of the fluorescent layer can affect the conversion of light, and the color temperature of the light source can be adjusted by adjusting the material or thickness of the fluorescent layer. In some embodiments, the basic light source 11 includes a basic fluorescent layer 114, the first ring-shaped light source 12 includes a first fluorescent layer 124, and the second ring-shaped light source 13 includes a second fluorescent layer 134; the thickness of the basic fluorescent layer 114 is different from the thickness of the first fluorescent layer 124, or the thickness of the basic fluorescent layer 114 is different from the thickness of the second fluorescent layer 134.
[0038] Phosphor powder can be added to the fluorescent layer. The distribution, color, and thickness of the phosphor powder can affect the conversion of light. To ensure the uniformity of light and the uniformity of the light spot, the phosphor powder in the fluorescent layer is preferably evenly distributed. In addition, the color temperature of the light source can be adjusted by the color and thickness of the phosphor powder. In some embodiments, the base fluorescent layer 114, the first fluorescent layer 124, and the second fluorescent layer 134 are all provided with phosphor powder. The thickness of the phosphor powder in the base fluorescent layer 114 is different from the thickness of the phosphor powder in the first fluorescent layer 124, or the thickness of the phosphor powder in the base fluorescent layer 114 is different from the thickness of the phosphor powder in the second fluorescent layer 134. That is, the color temperature of the base light source 11, the first ring-shaped light source 12, and the second ring-shaped light source 13 can be adjusted by adjusting the color and thickness of the phosphor powder provided in the base fluorescent layer 114, the first fluorescent layer 124, and the second fluorescent layer 134.
[0039] In some embodiments, the basic light source 11 further includes a basic light-emitting layer 111, the basic P-electrode and the basic N-electrode are both located on the basic light-emitting layer 111, and the basic fluorescent layer 114 is located above the basic light-emitting layer 111. The first ring-shaped light source 12 further includes a first light-emitting layer 121, the first P-electrode and the first N-electrode are both located on the first light-emitting layer 121, and the first fluorescent layer 124 is located above the first light-emitting layer 121. The second ring-shaped light source 13 further includes a second light-emitting layer 131, the second P-electrode and the second N-electrode are both located on the second light-emitting layer 131, and the second fluorescent layer 134 is located above the second light-emitting layer 131. The fluorescent layer is located above the light-emitting layer and can convert light from the light-emitting layer into visible light, while also adjusting the light distribution to make the light more uniform and consistent, and to enhance the light effect.
[0040] The color temperature of the light-emitting layer can be adjusted by adjusting the flow rate or power of the current, or by adjusting the material or thickness of the light-emitting layer. In some embodiments, the color temperature of the basic light-emitting layer 111 is different from the color temperature of the first light-emitting layer 121, and the color temperature of the first light-emitting layer 121 is the same as the color temperature of the second light-emitting layer 131; or, the color temperature of the basic light-emitting layer 111 is different from the color temperature of the first light-emitting layer 121, and the color temperature of the basic light source 11 is the same as the color temperature of the second light-emitting layer 131. In some embodiments, the thickness of the basic light-emitting layer 111 is different from the thickness of the first light-emitting layer 121, or the thickness of the basic light-emitting layer 111 is different from the thickness of the second light-emitting layer 131.
[0041] The epitaxial layer can be used to protect the P electrode and N electrode to prevent the electrodes from being damaged and causing failure or damage to the light source. Figure 4In some embodiments, the basic light source 11 further includes a basic P epitaxial layer 112 and a basic N epitaxial layer 113, the basic P electrode is located in the basic P epitaxial layer 112, the basic N electrode is located in the basic N epitaxial layer 113, the basic P epitaxial layer 112 covers the lower surface of the basic light-emitting layer 111, the basic N epitaxial layer 113 covers the upper surface of the basic light-emitting layer 111, and the basic fluorescent layer 114 is located above the basic N epitaxial layer 113; the first ring-shaped light source 12 further includes a first P epitaxial layer 122 and a first N epitaxial layer 123, the first P electrode is located in the first P epitaxial layer 122, and the first N electrode is located in the first N epitaxial layer 123. The first P epitaxial layer 122 covers the lower surface of the first light-emitting layer 121, the first N epitaxial layer 123 covers the upper surface of the first light-emitting layer 121, and the first fluorescent layer 124 is located above the first N epitaxial layer 123; the second ring-shaped light source 13 also includes a second P epitaxial layer 132 and a second N epitaxial layer 133, the second P electrode is located in the second P epitaxial layer 132, the second N electrode is located in the second N epitaxial layer 133, the second P epitaxial layer 132 covers the lower surface of the second light-emitting layer 131, the second N epitaxial layer 133 covers the upper surface of the second light-emitting layer 131, and the second fluorescent layer 134 is located above the second N epitaxial layer 133.
[0042] To facilitate electrical connection between the N electrode and the P electrode, a gap is provided between the light-emitting layer and the N epitaxial layer to facilitate passage of the N electrode or P electrode. In some embodiments, a basic gap 115 is provided between the basic light-emitting layer 111 and the basic N epitaxial layer 113, and the basic P electrode is electrically connected to the basic N electrode through the basic gap 115; a first gap 125 is provided between the first light-emitting layer 121 and the first N epitaxial layer 123, and the first P electrode is electrically connected to the first N electrode through the first gap 125; and a second gap 135 is provided between the second light-emitting layer 131 and the second N epitaxial layer 133, and the second P electrode is electrically connected to the second N electrode through the second gap 135.
[0043] There may be several ring-shaped light sources, and the color temperatures of the several ring-shaped light sources may be different from the color temperature of the basic light source 11 and may be adjusted by the user to meet the needs of different users.
[0044] refer to Figure 7In some embodiments, the annular light source further includes a third annular light source 14, which is disposed outside the second annular light source 13. The color temperature of the third annular light source 14 is different from that of the basic light source 11, or the color temperature of the third annular light source 14 is different from that of the second annular light source 13. The structure of the third annular light source 14 can be the same as that of the first annular light source 12 and the second annular light source 13; that is, both can include an N electrode, a P electrode, a light-emitting layer, and a fluorescent layer. The N electrode can be disposed within the N epitaxial layer, and the P electrode can be disposed within the P epitaxial layer. The color temperature of the annular light source can be adjusted by adjusting the current flowing through the N and P electrodes, as well as adjusting the material and thickness of the light-emitting layer and the fluorescent layer.
[0045] In some embodiments, the ring light source further includes a third ring light source 14, up to an Xth ring light source; the first ring light source 12, the second ring light source 13, the third ring light source 14, up to a total of X ring light sources; the third ring light source 14 is arranged outside the second ring light source 13, and so on, the Xth ring light source is arranged outside the X-1th ring light source; the color temperature of the Xth ring light source is different from the color temperature of the basic light source 11, or the color temperature of the Xth ring light source is different from the color temperature of the X-1th ring light source. The structure of the ring light source can be the same as that of the first ring light source 12 and the second ring light source 13; that is, they can all include an N electrode, a P electrode, a light-emitting layer, and a fluorescent layer, and the N electrode can be arranged in the N epitaxial layer, and the P electrode can be arranged in the P epitaxial layer. The color temperature of the ring light source can be adjusted by adjusting the current flowing through the N electrode and the P electrode, and adjusting the material and thickness of the light-emitting layer and the fluorescent layer.
[0046] In some embodiments, the technical solution of the present application can adjust the thickness of the light-emitting layer and the fluorescent layer of the basic light source 11 and the ring light source in the light source group 1 according to the actual application scenario, so as to ensure that they have good luminous efficiency; and when the thickness of the light-emitting layer and the fluorescent layer of the basic light source 11 and the ring light source in the light source group 1 remains unchanged, the corresponding color temperature can also be adjusted by adjusting the current flowing through the N electrode and the P electrode, and adjusting the material of the light-emitting layer and the fluorescent layer, the color of the phosphor, etc.
[0047] refer to Figure 5 In some embodiments, the color temperature adjustable annular light source further includes a lens 4, which is disposed above the light source assembly 1. The lens 4 can be configured according to actual needs. For applications requiring concentrated light, such as flashlights, projectors, and sunglasses, the lens 4 can be a convex lens 4. For applications requiring uniform illumination and reduced light intensity, such as automobile headlights and streetlights, the lens 4 can be a concave lens 4.
[0048] The light source group 1 may further include a protective layer 15, which is disposed above the fluorescent layer (including the basic fluorescent layer 114 of the basic light source 11 and the annular fluorescent layer of the annular light source), completely covering the fluorescent layer to prevent the fluorescent layer from being damaged.
[0049] The adjustable color temperature ring light source may further include a protective shell 3, which is arranged above the light source group 1 and forms an internal cavity space together with the substrate 2, completely covering the light source group 1 in the cavity space to protect the light source group 1; specifically, the lens 4 can be arranged inside the protective shell 3, between the protective shell 3 and the light source group 1; the lens 4 can also be arranged outside the protective shell 3, above the protective shell 3, so that the lens 4 can be easily replaced.
[0050] In summary, the present application provides an adjustable color temperature ring light source, including a substrate and a light source group arranged on the substrate, the light source group including a basic light source and a ring light source arranged outside the basic light source, the basic light source and the ring light source are electrically connected through their own N electrodes and P electrodes respectively, and can adjust the basic light source and the ring light source battery cells to be different or adjust the current power passing through the N electrodes and P electrodes of the two to make the color temperatures of the two different, thereby realizing various color temperature changes; at the same time, the basic light source and the ring light source are both flip-chip LED chip structures, which can reduce light obstruction, and the arrangement of the two being arranged in a nested manner can reduce the distance between the two, improve the effective output of light, and enhance the brightness and uniformity of the light spot.
[0051] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application, and not to limit them. Although the present application has been described in detail with reference to the above examples, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above examples, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the examples in the present application.
Claims
1. A color temperature adjustable ring light source, characterized in that: include: substrate; a light source group, the light source group being arranged on the substrate; The light source group includes a basic light source and an annular light source arranged outside the basic light source; the basic light source is provided with a basic P electrode and a basic N electrode, and the basic P electrode and the basic N electrode are electrically connected; the annular light source is provided with an annular P electrode and an annular N electrode, and the annular P electrode and the annular N electrode are electrically connected; The color temperature of the basic light source is different from that of the annular light source; both the basic light source and the annular light source are flip-chip LED chip structures.
2. The color temperature adjustable ring light source according to claim 1, characterized in that: The annular light source includes a first annular light source and a second annular light source, wherein the first annular light source is sleeved on the outside of the basic light source, and the second annular light source is sleeved on the outside of the first annular light source; The annular P electrode includes a first P electrode and a second P electrode, and the annular N electrode includes a first N electrode and a second N electrode; the first P electrode and the first N electrode are both connected to the first annular light source, and the first P electrode and the first N electrode are electrically connected; The second P electrode and the second N electrode are both connected to the second annular light source, and the second P electrode and the second N electrode are electrically connected; The color temperature of the basic light source is different from the color temperature of the first ring-shaped light source, or the color temperature of the basic light source is different from the color temperature of the second ring-shaped light source.
3. The color temperature adjustable ring light source according to claim 2, characterized in that: The basic light source includes a basic fluorescent layer, the first annular light source includes a first fluorescent layer, and the second annular light source includes a second fluorescent layer; the thickness of the basic fluorescent layer is different from that of the first fluorescent layer, or the thickness of the basic fluorescent layer is different from that of the second fluorescent layer.
4. The color temperature adjustable ring light source according to claim 3, characterized in that: Phosphor powder is disposed in the basic phosphor layer, the first phosphor layer, and the second phosphor layer. The thickness of the phosphor powder in the basic phosphor layer is different from that in the first phosphor layer, or the thickness of the phosphor powder in the basic phosphor layer is different from that in the second phosphor layer.
5. The color temperature adjustable ring light source according to claim 3, characterized in that: The basic light source further includes a basic light-emitting layer, the basic P electrode and the basic N electrode are both located on the basic light-emitting layer, and the basic fluorescent layer is located above the basic light-emitting layer; The first annular light source further includes a first light-emitting layer, the first P electrode and the first N electrode are both located on the first light-emitting layer, and the first fluorescent layer is located above the first light-emitting layer; The second annular light source further includes a second light-emitting layer. The second P electrode and the second N electrode are both located on the second light-emitting layer. The second fluorescent layer is located above the second light-emitting layer.
6. The color temperature adjustable ring light source according to claim 5, characterized in that: The thickness of the base light-emitting layer is different from the thickness of the first light-emitting layer, or the thickness of the base light-emitting layer is different from the thickness of the second light-emitting layer.
7. The color temperature adjustable ring light source according to claim 5, characterized in that: The basic light source further includes a basic P epitaxial layer and a basic N epitaxial layer, the basic P electrode is located in the basic P epitaxial layer, the basic N electrode is located in the basic N epitaxial layer, the basic P epitaxial layer covers the lower surface of the basic light-emitting layer, the basic N epitaxial layer covers the upper surface of the basic light-emitting layer, and the basic fluorescent layer is located above the basic N epitaxial layer; The first annular light source further includes a first P epitaxial layer and a first N epitaxial layer, the first P electrode is located in the first P epitaxial layer, the first N electrode is located in the first N epitaxial layer, the first P epitaxial layer covers the lower surface of the first light-emitting layer, the first N epitaxial layer covers the upper surface of the first light-emitting layer, and the first fluorescent layer is located above the first N epitaxial layer; The second ring light source also includes a second P epitaxial layer and a second N epitaxial layer, the second P electrode is located in the second P epitaxial layer, the second N electrode is located in the second N epitaxial layer, the second P epitaxial layer covers the lower surface of the second light-emitting layer, the second N epitaxial layer covers the upper surface of the second light-emitting layer, and the second fluorescent layer is located above the second N epitaxial layer.
8. The color temperature adjustable ring light source according to claim 7, characterized in that: A basic gap is provided between the basic light-emitting layer and the basic N epitaxial layer, and the basic P electrode is electrically connected to the basic N electrode through the basic gap; A first gap is provided between the first light-emitting layer and the first N epitaxial layer, and the first P electrode is electrically connected to the first N electrode through the first gap; A second gap is provided between the second light-emitting layer and the second N epitaxial layer, and the second P electrode is electrically connected to the second N electrode through the second gap.
9. The color temperature adjustable ring light source according to claim 2, characterized in that: The annular light source further includes a third annular light source, up to an Xth annular light source; the first annular light source, the second annular light source, the third annular light source, up to the Xth annular light source, a total of X; the third annular light source is arranged outside the second annular light source, and so on, the Xth annular light source is arranged outside the X-1th annular light source; the color temperature of the Xth annular light source is different from the color temperature of the basic light source, or the color temperature of the Xth annular light source is different from the color temperature of the X-1th annular light source.
10. The color temperature adjustable ring light source according to claim 1, characterized in that: The color temperature adjustable annular light source further includes a lens, which is arranged above the light source group.