High-light-transmittance LED lens and high-brightness spotlight

Abstract

The utility model relates to a high-light-transmittance LED lens and a high-brightness spotlight. The high-light-transmittance LED lens comprises a light-transmitting through hole, a light-transmitting lens and a light-transmitting lens, wherein the light-transmitting through hole is formed in the condensing lens and right faces the center of the luminous source, and the section of the light-transmitting through hole is circular or polygonal; a luminous source mounting hole is further formed in the condensing lens, and the luminous source is located in the luminous source mounting hole; the light-transmitting through hole is communicated with the luminous source mounting hole; the light-transmitting through hole right facing the center of the light-emitting source is formed in the condensing lens, so that the middle part (maximum luminous flux) of divergent light emitted by the light-emitting source is directly emitted out through the light-transmitting through hole instead of being transmitted out through the condensing lens, loss of light energy is avoided, and the phenomenon of condensing imaging cannot be formed due to the fact that the center of the condensing lens is in a through hole shape. Meanwhile, ventilation and heat dissipation effects are achieved, and the heat dissipation effect on the condensing lens or the light-emitting source is achieved; a light-emitting source mounting hole is formed to reflect divergent light emitted by the light-emitting source; therefore, the structure is simple, the light-transmitting efficiency is high, and the light-gathering imaging phenomenon is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of LED lenses, and more particularly to a high-transmittance LED lens and a high-brightness spotlight. Background Art

[0002] Most fully reflective LED lenses enclose the LED inside the lens. Light must pass through the incident surface of the lens and then exit from the exit surface. During the propagation of light inside the lens, light loss will occur due to interface and material absorption.

[0003] For example, when using polycarbonate (PC) material to design LED lenses, the exit surface reflects about 5% of the light energy, resulting in a total loss of about 10%. Therefore, the maximum efficiency of a typical LED lens is 90%, while the light transmission efficiency of typical LED street light lenses is required to reach the limit, making it difficult to improve existing lenses.

[0004] like Figure 1 As shown, light ray ② enters the lens from incident surface 01, propagates through the lens, and finally exits the lens from exit surface 02. Due to light loss caused by Fresnel reflections at the lens' incident and exit surfaces 01 and 02, as well as absorption by the lens materials, the lens transmittance is low. If the lens's beam angle is very small, light ray ② will affect the imaging of the LED light source, affecting the uniformity of the light spot and the lighting effect. Furthermore, it can also cause concentrated imaging. Light rays ① and ② are both emitted after being reflected by the lens. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide a high-transmittance LED lens and a high-brightness spotlight with high light transmittance and no concentrated imaging phenomenon, in view of the above-mentioned defects of the prior art.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] On the one hand, a high-transmittance LED lens is constructed, comprising: a light-transmitting through hole; wherein the light-transmitting through hole is provided on a focusing lens and faces the center of a light source, and the cross-section of the light-transmitting through hole is circular or polygonal;

[0008] The condenser lens is further provided with a light source mounting hole, wherein the light source is located in the light source mounting hole; the light-transmitting through hole is connected to the light source mounting hole;

[0009] The side surface of the condenser lens reflects the divergent light emitted by the light source to an end away from the light source.

[0010] In the high-transmittance LED lens of the present invention, the light-transmitting through hole is in a trumpet-mouth shape, and the included angle of the trumpet-mouth is less than 25 degrees.

[0011] In the high-transmittance LED lens of the present invention, a plurality of light-transmitting through holes are provided, and the plurality of light-transmitting through holes are all facing the light source.

[0012] On the other hand, the present invention provides a high-brightness spotlight based on the above-mentioned high-transmittance LED lens, comprising: a plurality of the above-mentioned focusing lenses; characterized in that the plurality of the above-mentioned focusing lenses are arranged in a rectangular or circular shape in a heat dissipation housing;

[0013] A plurality of light sources are arranged in the heat dissipation housing, and the light-transmitting through holes of the plurality of condensing lenses face the plurality of light sources one by one.

[0014] The high-transmittance LED lens of the utility model, wherein the high-brightness spotlight further comprises: a dustproof panel;

[0015] The dustproof panel is transparent, faces one end of the plurality of condensing lenses away from the light source, and is fixedly connected to the heat dissipation housing.

[0016] The beneficial effects of the present invention are as follows: a light-transmitting through hole is provided on the focusing lens, which is directly opposite to the center of the light source, so that the middle part of the divergent light emitted by the light source (with the largest luminous flux) is directly emitted through the light-transmitting through hole without being transmitted through the focusing lens, and there is no loss of light energy. Moreover, since the center of the focusing lens is in the shape of a through hole, the phenomenon of focusing imaging cannot be formed. At the same time, it also has the effect of ventilation and heat dissipation, which has the effect of heat dissipation for the focusing lens or the light source; a light source mounting hole is provided to reflect all the divergent light emitted by the light source; thereby achieving a simple structure, high light transmission efficiency, and no focusing imaging phenomenon. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work:

[0018] Figure 1 It is a cross-sectional view of the technical solution mentioned in the background technology of the specification of the high-transmittance LED lens of the preferred embodiment 1 of the present invention;

[0019] Figure 2 This is a cross-sectional view of a high-transmittance LED lens according to a preferred embodiment of the present invention;

[0020] Figure 3This is a front view of a high-transmittance LED lens according to a preferred embodiment of the present invention, wherein the cross-section of the light-transmitting hole is a quadrilateral;

[0021] Figure 4 This is a cross-sectional view of a polygonal cross-section of a light-transmitting through hole of a high-transmittance LED lens according to a preferred embodiment of the present invention;

[0022] Figure 5 This is a cross-sectional view of a focusing lens of a high-transmittance LED lens according to a preferred embodiment of the present invention, which is provided with a plurality of light-transmitting through holes having a circular cross-section;

[0023] Figure 6 This is a three-dimensional diagram of a high-brightness spotlight according to a second preferred embodiment of the present invention. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will be described clearly and completely in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Embodiment 1;

[0026] The high light transmittance LED lens of the preferred embodiment 1 of the present invention; Figure 2 See also Figure 1 and Figures 3 to 5 ;

[0027] It includes: a light-transmitting through hole 100; wherein, the light-transmitting through hole 100 is arranged on the focusing lens 200 and is opposite to the center of the light source 300, and the cross-section of the light-transmitting through hole 100 is circular, polygonal, or quadrilateral, which meets different usage requirements and is beautiful; wherein, by opening the light-transmitting through hole 100 in the center of the focusing lens 200, the transmittance of the focusing lens 200 is improved, the central light intensity is increased by 50%, and the overall transmittance of the focusing lens 200 reaches 96%, eliminating the adverse effects of lens spot imaging, and playing a role in ventilation, reducing the junction temperature of the light source 300, and increasing the life of the light source 300; further, the light source 300 is preferably an LED.

[0028] The condenser lens 200 is further provided with a light source mounting hole 110, and the light source 300 is located in the light source mounting hole 110; the light-transmitting through hole 100 is connected to the light source mounting hole 110;

[0029] The side surface of the condensing lens 200 reflects the divergent light emitted by the light source 300 to an end away from the light source 300, thereby achieving light focusing.

[0030] A light-transmitting through hole 100 is provided on the focusing lens 200, facing the center of the light source 300, so that the middle part of the divergent light emitted by the light source 300 (with the largest luminous flux) is directly emitted through the light-transmitting through hole 100 without being transmitted through the focusing lens 200. There is no loss of light energy, and since the center of the focusing lens 200 is in the shape of a through hole, the phenomenon of focusing imaging cannot be formed. At the same time, it also has the effect of ventilation and heat dissipation, which has the effect of heat dissipation for the focusing lens 200 or the light source 300; a light source mounting hole 110 is provided to reflect all the divergent light emitted by the light source 300; thereby achieving a simple structure, high light transmission efficiency, no focusing imaging phenomenon, and convenient heat dissipation.

[0031] like Figures 2 to 5 As shown, the light-transmitting through hole 100 is in the shape of a trumpet, and the angle of the trumpet is less than 25 degrees; the micron looks good and conforms to the divergence angle of the divergent light.

[0032] like Figures 2 to 5 As shown, there are multiple light-transmitting through holes 100, and the multiple light-transmitting through holes 100 are all facing the light source 300; different usage requirements are met to increase the contact surface between the focusing lens 200 and the air, which is convenient for cooling.

[0033] Embodiment 2:

[0034] like Figure 6 As shown, the high-brightness spotlight based on the high-transmittance LED lens of the above-mentioned embodiment 1 includes: a plurality of focusing lenses 200; wherein the plurality of focusing lenses 200 are arranged in a rectangular or circular shape in a heat dissipation housing 400;

[0035] A plurality of light sources 300 are disposed in the heat dissipation housing 400 , and the light-transmitting through holes 100 of the plurality of condensing lenses 200 face the plurality of light sources 300 one by one; the structure is simple and the cost is low.

[0036] like Figure 6 As shown, the high-brightness spotlight also includes: a dust-proof panel (not shown in the figure);

[0037] The dustproof panel is transparent, facing one end of the multiple focusing lenses 200 away from the light source 300 and fixedly connected to the heat dissipation housing 400 to prevent dust from accumulating in the light-transmitting through hole 100 and affecting the light transmittance.

[0038] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this utility model.

Claims

1. A high-transmittance LED lens, comprising: Light-transmitting through hole; characterized in that the light-transmitting through hole is provided on the focusing lens and is directly opposite to the center of the light source, and the cross-section of the light-transmitting through hole is circular or polygonal; The condenser lens is further provided with a light source mounting hole, wherein the light source is located in the light source mounting hole; the light-transmitting through hole is connected to the light source mounting hole; The side surface of the condenser lens reflects the divergent light emitted by the light source to an end away from the light source.

2. The high-transmittance LED lens according to claim 1, characterized in that: The light-transmitting through hole is in a trumpet-shaped shape, and the included angle of the trumpet-shaped hole is less than 25 degrees.

3. The high-transmittance LED lens according to claim 1, characterized in that: There are multiple light-transmitting through holes, and the multiple light-transmitting through holes are all facing the light source.

4. A high-brightness spotlight based on the high-transmittance LED lens according to any one of claims 1 to 3, comprising: A plurality of the condenser lenses; characterized in that the plurality of condenser lenses are arranged in a rectangular or circular shape and are arranged in the heat dissipation housing; A plurality of light sources are arranged in the heat dissipation housing, and the light-transmitting through holes of the plurality of condensing lenses face the plurality of light sources one by one.

5. The high-brightness spotlight according to claim 4, characterized in that: The high-brightness spotlight further comprises: a dustproof panel; The dustproof panel is transparent, faces one end of the plurality of condensing lenses away from the light source, and is fixedly connected to the heat dissipation housing.

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