A reflective lamp with improved light extraction efficiency
Patent Information
- Application Number
- CN202522283298.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-29
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-10-29
AI Technical Summary
[0002]目前市面上为了满足人们对舒适柔和的低眩光照明体验，已经有不少反射式的灯具上市，该类型灯具由于采用间接照明的方式，具有出光表面亮度均匀且低眩光值的优势，深受消费群体的青睐；可由于是间接反射，灯具经过反光面是弧形的腔体，因光线需经多次来回反射才能到达工作面，光能损耗较大，需更多灯具或更高功率才能达到直接照明的亮度
[0015]与现有技术相比，本申请的提高出光效率的反射式灯具设置向内凹陷的反光面，并且灯板和透镜设置在反光面的两侧，如此，灯板的光线可以经透镜引导到反光面上，再从反光面反射到出光槽的外部，光线不会在反光面来回反射，降低了光能损耗，反射效率高。
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Figure CN224872340U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of lighting equipment technology, and more specifically, relates to a reflective luminaire with improved light output efficiency. Background Technology
[0002] Currently, to meet people's needs for a comfortable, soft, and low-glare lighting experience, many reflective lamps have been launched on the market. Because these lamps use indirect lighting, they have the advantages of uniform brightness and low glare value on the light-emitting surface, making them popular among consumers. However, because they are indirect reflective, the reflective surface of the lamp is an arc-shaped cavity. As the light needs to be reflected back and forth multiple times before reaching the work surface, the light energy loss is relatively large, requiring more lamps or higher power to achieve the brightness of direct lighting. Utility Model Content
[0003] In order to overcome the above-mentioned shortcomings in the prior art, the purpose of this application is to provide a reflective lamp with improved light output efficiency, which has a simple and compact structure, is easy and quick to assemble and disassemble, has low light energy loss, and high reflection efficiency.
[0004] The technical means adopted in this application to solve the above-mentioned technical problems are:
[0005] This application provides a reflective luminaire with improved light extraction efficiency, comprising:
[0006] The lamp housing has a light-emitting groove, and the inner wall of the light-emitting groove has an inwardly recessed reflective surface. The lamp housing has two lamp slots, which are arranged one-to-one on both sides of the reflective surface.
[0007] Two light panels are inserted into the light slot in a one-to-one correspondence;
[0008] Two lenses are installed in the lamp slot in a one-to-one correspondence;
[0009] The lens guides the light emitted from the lamp panel to the reflective surface, and the reflective surface guides the light to the outside of the light outlet groove.
[0010] Preferably, the angle between the lamp panel and the horizontal plane is 35-45°.
[0011] Preferably, the reflective surface is provided with serrations.
[0012] Preferably, the angle of the saw teeth gradually decreases from the lamp groove toward the midpoint of the reflective surface.
[0013] Preferably, the lamp slot is provided with a first slot and a second slot from the inside out, the lamp board is inserted into the first slot, and the lens is inserted into the second slot.
[0014] Preferably, the reflective surface is a symmetrical arc-shaped surface.
[0015] Compared with the prior art, the reflective lamp of this application with improved light output efficiency is provided with an inwardly recessed reflective surface, and the lamp panel and lens are set on both sides of the reflective surface. In this way, the light from the lamp panel can be guided to the reflective surface by the lens, and then reflected from the reflective surface to the outside of the light output groove. The light does not reflect back and forth on the reflective surface, reducing light energy loss and achieving high reflection efficiency. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the reflective luminaire with improved light output efficiency according to this application.
[0018] Figure 2 This is a diagram showing the variation of the sawtooth pattern on the reflective surface of the reflective luminaire for improving light extraction efficiency according to this application.
[0019] Figure 3 This is a diagram showing the light ray trajectory of the lens near the reflective surface in this application.
[0020] Figure 4 This is a diagram showing the ray flow from the center of the lens in this application.
[0021] Figure 5 This is a diagram showing the trajectory of the emitted light rays from the lens near the light outlet of this application.
[0022] Figure 6 This is a ray pattern diagram after adding serrations to the light rays in this application.
[0023] Figure 7 This is the light path diagram without aliasing in this application.
[0024] Figure 8 A simulated trend diagram of all light rays for the entire lamp with serrations in this application.
[0025] Figure 9 This is a simulated trend diagram of all light rays from the entire lamp in this application without serrations.
[0026] Marker explanation:
[0027] 1. Lamp housing; 1a. Reflective surface; 1b. Serrated edge; 2. Lamp panel; 3. Lens. Detailed Implementation
[0028] To better understand the above-mentioned objectives, features, and advantages of this utility model, it will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of this utility model; the described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0029] It should be noted that, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. Similar reference numerals and letters denote similar items in the following figures; therefore, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0030] like Figure 1 As shown, this embodiment provides a reflective lamp with improved light emission efficiency, including a lamp housing 1, two lamp panels 2, and two lenses 3. The lamp housing 1 is provided with a light emission groove, and the inner wall of the light emission groove is provided with an inwardly recessed reflective surface 1a. The lamp housing 1 is provided with two lamp slots, which are respectively arranged on both sides of the reflective surface 1a. The two lamp panels 2 are respectively inserted into the lamp slots. The two lenses 3 are respectively installed in the lamp slots. The lenses 3 guide the light emitted by the lamp panels 2 to the reflective surface 1a, and the reflective surface 1a guides the light to the outside of the light emission groove.
[0031] In some preferred embodiments of this invention, the angle between the lamp panel 2 and the horizontal plane is 35-45°. Further, the angle between the lamp panel 2 and the horizontal plane is 40°.
[0032] In some preferred embodiments of this invention, the surface of the reflective surface 1a is provided with serrations 1b. Thus, the serrations 1b can further prevent light from reflecting back and forth on the reflective surface 1a, further improving the reflection efficiency.
[0033] In some preferred embodiments of this invention, the angle of the sawtooth 1b gradually decreases from the lamp groove towards the midpoint of the reflective surface 1a. This further prevents light from reflecting back and forth on the reflective surface 1a, thereby further improving reflection efficiency.
[0034] In some preferred embodiments of this utility model, the lamp trough is provided with a first slot and a second slot from the inside out, the lamp plate 2 is inserted into the first slot, and the lens 3 is inserted into the second slot. This facilitates the installation of the lens 3 and the lamp plate 2.
[0035] In some preferred embodiments of this utility model, the reflective surface 1a is a symmetrical arc-shaped surface.
[0036] Lens light control can be divided into three parts, such as Figure 3 As shown, the light near the reflective surface is emitted in a cross-beam pattern, which avoids excessive light reception near the lens end, preventing overexposure and thus reducing visual glare from the luminaire; Figure 4 and Figure 5 As shown, the light beam diffuses outwards from the center of the lens and the side near the light outlet, which can evenly brighten the center of the reflective surface.
[0037] The diffuse surface in the middle has a serrated structure from the bottom of the side to the top of the center, and from bottom to top, the tilt angle θ between the vertical axis and the serrated surface a decreases from large to small, as shown in the details. Figure 2 As shown; Figure 6 It's a ray tracing chart with added jagged edges. Figure 7 The diagram shows the light path with added serrations. It can be seen that the serration arrangement designed in this application can greatly reduce the number of times light is reflected in the reflective cavity.
[0038] Figure 8 It is a simulated trend diagram of all the light rays from the whole lamp plus the sawtooth pattern. Figure 9 This is a simulated trajectory diagram of all light rays without serrations. As you can see, with serrations, the light rays are basically reflected once and then emitted towards the light outlet. However, with the unserrated reflective surface, the light rays are reflected multiple times and then hit the lens at the other end, which will cause great loss.
[0039] Compared with the prior art, the reflective lamp of this application with improved light output efficiency is provided with an inwardly recessed reflective surface 1a, and the lamp panel 2 and lens 3 are provided on both sides of the reflective surface 1a. In this way, the light from the lamp panel 2 can be guided to the reflective surface 1a by the lens 3, and then reflected from the reflective surface 1a to the outside of the light output groove. The light will not be reflected back and forth on the reflective surface 1a, reducing light energy loss and achieving high reflection efficiency.
[0040] The above description is merely a specific embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should also be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
Claims
1. A reflective luminaire with improved light extraction efficiency, characterized in that, include: The lamp housing has a light-emitting groove, and the inner wall of the light-emitting groove has an inwardly recessed reflective surface. The lamp housing has two lamp slots, which are arranged one-to-one on both sides of the reflective surface. Two light panels are inserted into the light slot in a one-to-one correspondence; Two lenses are installed in the lamp slot in a one-to-one correspondence; The lens guides the light emitted from the lamp panel to the reflective surface, and the reflective surface guides the light to the outside of the light outlet groove.
2. The reflective luminaire with improved light extraction efficiency according to claim 1, characterized in that, The angle between the lamp panel and the horizontal plane is 35-45°.
3. The reflective luminaire with improved light extraction efficiency according to claim 1, characterized in that, The reflective surface is provided with serrations.
4. The reflective luminaire with improved light extraction efficiency according to claim 3, characterized in that, The angle of the serrations gradually decreases from the lamp slot towards the midpoint of the reflective surface.
5. The reflective luminaire with improved light extraction efficiency according to claim 1, characterized in that, The lamp trough is provided with a first slot and a second slot from the inside out. The lamp board is inserted into the first slot and the lens is inserted into the second slot.
6. The reflective luminaire with improved light extraction efficiency according to claim 1, characterized in that, The reflective surface is a symmetrical arc shape.