LED lens and industrial and mining lamp having the same

Abstract

The present invention relates to an LED lens, comprising: a transparent substrate, which is a disc-shaped structure, wherein the transparent substrate comprises a light incident surface and a light emitting surface opposite to the light incident surface; and a plurality of lens parts, wherein the plurality of lens parts are arranged on the light incident surface, and a receiving groove is provided at the end of the lens part, wherein the receiving groove can receive LED lamp beads, and the receiving groove is a truncated cone-shaped structure, wherein the diameter of the opening of the receiving groove is larger than the diameter of the bottom of the receiving groove, and wherein a plurality of protrusions are distributed on the bottom of the receiving groove, so that the bottom of the receiving groove is a bead surface structure formed by a plurality of hemispherical surfaces, and the light emitted by the LED lamp beads is emitted through the bottom of the receiving groove and the light emitting surface. The above-mentioned industrial and mining lamp and its LED lens have soft and non-glaring light, uniform illumination, and can reduce stray light, thus meeting people's demand for large diameter and high power LED lamps, and can save costs and improve production efficiency.

Description

Technical Field

[0001] The invention relates to lighting technology, in particular to an LED lens and an industrial and mining lamp having the LED lens. Background Art

[0002] As an emerging light source, LED (light emitting diode) has been widely used in various applications, especially in the field of lighting. LED light sources are known for energy saving, high efficiency and long service life. However, due to the low power, low light efficiency and low light energy utilization rate of LED light sources, the development of LED light sources is greatly limited. Therefore, people usually use LED with lenses, which can distribute the light emitted by the light emitting diode to obtain better lighting effects.

[0003] Traditional LED lenses are generally composed of a LED light source and a lens. The light is uneven, glaring, and has stray light, which greatly reduces the lighting effect. Summary of the invention

[0004] Based on this, an LED lens with good lighting effect is provided, and an industrial and mining lamp using the LED lens is also provided.

[0005] An LED lens, comprising:

[0006] A transparent substrate having a disc-shaped structure, wherein the transparent substrate comprises a light incident surface and a light emitting surface opposite to the light incident surface; and

[0007] There are multiple lens parts, and the multiple lens parts are arranged on the light incident surface. A receiving groove is opened at the end of the lens part, and the receiving groove can accommodate LED lamp beads. The receiving groove is a truncated cone structure. The diameter of the opening of the receiving groove is larger than the diameter of the bottom of the receiving groove. A plurality of protrusions are distributed on the bottom of the receiving groove, so that the bottom of the receiving groove is a bead surface structure formed by multiple hemispherical surfaces. The light emitted by the LED lamp beads is emitted through the bottom of the receiving groove and the light emitting surface.

[0008] In one embodiment, the light incident surface is a matte surface.

[0009] In one of the embodiments, it further includes reinforcing ribs, and the reinforcing ribs are arranged on the light incident surface.

[0010] In one embodiment, the reinforcing rib extends from the center of the light incident surface along the radial direction of the transparent substrate, and there are multiple reinforcing ribs, and the multiple reinforcing ribs divide the light incident surface into multiple sector-shaped light-emitting areas.

[0011] In one embodiment, a plurality of the lens portions are distributed in a fan-shaped array within the light-emitting area.

[0012] In one embodiment, the reinforcing rib is a strip structure with a semicircular cross-section.

[0013] In one embodiment, the transparent substrate is a stepped structure, including a first step layer and a second step layer with a diameter smaller than the first step layer, the light emitting surface is located on the first step layer, and the plurality of lens portions are distributed on the second step layer.

[0014] In one embodiment, the transparent substrate and the plurality of lens portions are an integral structure, and the transparent substrate and the plurality of lens portions are integrally formed through an injection molding process.

[0015] In one of the embodiments, a reinforcement layer is provided in the middle of the light emitting surface, the reinforcement layer protrudes from the light emitting surface, and the edge of the reinforcement layer is smoothly connected to the light emitting surface.

[0016] A mining lamp comprises the above-mentioned LED lens.

[0017] In the mining lamp and its LED lens, the light emitted by the LED lamp beads is emitted through the bottom of the receiving groove and the light-emitting surface. Since the bottom of the receiving groove is a bead surface structure formed by multiple hemispherical surfaces, the light emitted by the LED lamp beads can be evenly dispersed, the light type is soft and not dazzling, the illumination is uniform, and stray light can be reduced, thereby improving the lighting effect.

[0018] In addition, the LED lens used in the above industrial and mining lamps can be an integrated structure between the transparent substrate and the multiple lens parts. Specifically, the transparent substrate and the multiple lens parts are integrally formed by an injection molding process. The transparent substrate has a large diameter and there are multiple lens parts. Through injection molding, an integrated LED lens with an all-in-one structure is formed, which meets people's demand for large diameter and high power LED lamps, and can save costs and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, drawings of other embodiments can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A structural diagram of an LED lens in one embodiment of the present invention;

[0021] Figure 2 for Figure 1 A side view of the LED lens shown;

[0022] Figure 3 for Figure 1 A partial enlarged view of the LED lens shown;

[0023] Figure 4 for Figure 1 Another partial enlarged view of the LED lens shown;

[0024] Figure 5 for Figure 1 A structural diagram of the LED lens from another angle; and

[0025] Figure 6 for Figure 1 The light distribution simulation light pattern diagram of the LED lens shown. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0028] 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. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0029] See also Figure 1 The LED lens 100 in one embodiment of the present invention includes a transparent substrate 110 and a lens portion 130 .

[0030] Please also read Figure 2 The transparent substrate 110 is a disc-shaped structure and includes a light incident surface 111 and a light emitting surface 113 opposite to the light incident surface 111 .

[0031] Please also read Figure 3The lens portions 130 are multiple. The multiple lens portions 130 are arranged on the light incident surface 111. The end of the lens portion 130 is provided with a receiving groove 132. The receiving groove 132 can receive an LED lamp bead (not shown). The receiving groove 132 is a truncated cone structure. The diameter of the opening of the receiving groove 132 is larger than the diameter of the bottom of the receiving groove 132. Please refer to Figure 4 The bottom of the receiving groove 132 is provided with a plurality of protrusions 132a, so that the bottom of the receiving groove 132 is a bead surface structure formed by a plurality of hemispherical surfaces. The protrusions 132a are generally in a scale-shaped structure. The light emitted by the LED lamp bead is emitted through the bottom of the receiving groove 132 and the light-emitting surface 113.

[0032] When the LED lens 100 is installed on an LED lamp, the multiple LED lamp beads on the LED lamp are respectively located in the receiving grooves 132 of the multiple lens parts 130, and the light emitted by the LED lamp beads is emitted through the groove bottom of the receiving groove 132 and the light emitting surface 113. Since the groove bottom of the receiving groove 132 is a bead surface structure formed by multiple hemispherical surfaces, the light emitted by the LED lamp beads can be evenly dispersed, the light type is soft and not dazzling, the illumination is uniform, and stray light can be reduced, thereby improving the lighting effect.

[0033] Furthermore, the transparent substrate 110 and the plurality of lens portions 130 may be an integrally formed structure. Specifically, the transparent substrate 110 and the plurality of lens portions 130 are integrally formed through an injection molding process. The diameter of the transparent substrate 110 is relatively large. Specifically, in the present embodiment, the diameter of the transparent substrate 110 is 288.2 mm, and a large-tonnage injection molding machine is required for injection molding. Specifically, there may be 174 lens portions 130, and through injection molding, an integrated LED lens 100 with an all-in-one structure is formed, which meets people's demand for large diameter and high power LED lamps, and can save costs and improve production efficiency.

[0034] The LED lens 100 can be made of polycarbonate (PC) material, which has high light transmittance, good hardness, is not easy to break or deform, and has good optical and structural properties. It is understandable that the LED lens 100 can also be made of other materials with similar properties, not limited to polycarbonate.

[0035] Please refer again Figure 2 Specifically in this embodiment, the transparent substrate 110 is a stepped structure, including a first stepped layer 110a and a second stepped layer 110b with a diameter smaller than the first stepped layer 110a. The light emitting surface 113 is located on the first stepped layer 110a, and a plurality of lens portions 130 are distributed on the second stepped layer 110b. The edge of the second stepped layer 110b is smoothly connected to the first stepped layer 110a.

[0036] In the above-mentioned LED lens 100, the light incident surface 111 of the transparent substrate 110 can also be atomized to form a matte surface. Setting the light incident surface 111 to a matte surface can hide the lamp beads or wires inside the LED lamp, making the LED lamp more neat and beautiful. At the same time, the light incident surface 111 is a matte surface, which can make the entire LED lamp emit light more evenly, without obvious overall brightness difference. In addition, the light incident surface 111 is a matte surface, which can also reduce stray light.

[0037] Please refer again Figure 1 The LED lens 100 further includes a reinforcing rib 150 , and the reinforcing rib 150 is disposed on the light incident surface 111 .

[0038] Specifically in this embodiment, the reinforcing rib 150 extends from the center of the light incident surface 111 along the radial direction of the transparent substrate 110. There are multiple reinforcing ribs 150, and the multiple reinforcing ribs 150 divide the light incident surface 111 into multiple fan-shaped light emitting areas. Multiple lens portions 130 are distributed in a fan-shaped array in the light emitting area.

[0039] A plurality of reinforcing ribs 150 are arranged on the transparent substrate 110, so that the entire LED lens 100 is relatively strong and not easily deformed, thereby solving the problem of the traditional large-area lens warping due to the influence of external stress.

[0040] The reinforcing rib 150 may be a strip structure with a semicircular cross section. It is understood that in other embodiments, the cross section of the reinforcing rib 150 may be other shapes, not limited to a semicircular structure.

[0041] Please also read Figure 5 A reinforcing layer 170 is provided in the middle of the light emitting surface 113. The reinforcing layer 170 protrudes from the light emitting surface 113, and the edge of the reinforcing layer 170 is smoothly connected to the light emitting surface 113. The surface of the reinforcing layer 170 is generally an arc surface. The reinforcing layer 170 is provided in the middle of the light emitting surface 113 to solve the problem that the traditional lens is warped due to external stress after installation. The reinforcing layer 170 forms an integral structure with the transparent substrate 110.

[0042] Please also read Figure 6 , Figure 6The light distribution simulation light pattern diagram of the above-mentioned LED lens 100 shows that the above-mentioned LED lens 100 is a secondary aspherical optical lens. The LED lens 100 adopts a multiple scale-armor surface design. By controlling the curved surface direction of each scale-armor surface, the light of the LED is irradiated within a range of 60°. The scale-armor surface assists in dispersing the maximum light intensity of the LED, indirectly reducing the glare index of the lamp. This LED lens 100 and the LED adopt a unique circularly symmetrical arrangement to ensure that the overall light distribution curve of the lamp is very symmetrical, thereby improving the optical consistency of the lamp. The use of a 60° light-emitting angle can ensure that a higher illumination can be achieved under the illumination of the lamp, and can also ensure a certain degree of uniformity. After the light distribution of the above-mentioned LED lens 100, the light pattern of the lamp is more rounded, symmetrical, and the illumination is uniform and soft.

[0043] In addition, the present invention also provides an industrial and mining lamp (not shown) of an embodiment, which includes the above-mentioned LED lens 100. The industrial and mining lamp uses LED as a light source, and the LED lamp beads are arranged in the receiving groove 132 of the lens part 130. The light emitted by the LED lamp beads is distributed by the LED lens 100 and then emitted through the light emitting surface 113.

[0044] In the above mining lamp, the light emitted by the LED lamp beads is emitted through the bottom of the receiving groove 132 and the light emitting surface 113. Since the bottom of the receiving groove 132 is a bead surface structure formed by multiple hemispherical surfaces, the light emitted by the LED lamp beads can be evenly dispersed, the light type is soft and not dazzling, the illumination is uniform, and stray light can be reduced, thereby improving the lighting effect.

[0045] In addition, the LED lens 100 used in the above mining lamp can be an integrated structure between the transparent substrate 110 and the multiple lens parts 130. Specifically, the transparent substrate 110 and the multiple lens parts 130 are integrally formed by injection molding. The transparent substrate 110 has a large diameter, and there are multiple lens parts 130. Through injection molding, an integrated LED lens 100 with an all-in-one structure is formed, which meets people's demand for large diameter and high power LED lamps, and can save costs and improve production efficiency.

[0046] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An LED lens, characterized in that: include: The transparent substrate is a disc-shaped structure, and the transparent substrate includes a light incident surface and a light emitting surface opposite to the light incident surface; There are multiple lens parts, and the multiple lens parts are arranged on the light incident surface. The end of the lens part is provided with a receiving groove, and the receiving groove can receive LED lamp beads. The receiving groove is a truncated cone structure. The diameter of the opening of the receiving groove is larger than the diameter of the bottom of the receiving groove. A plurality of protrusions are distributed on the bottom of the receiving groove, so that the bottom of the receiving groove is a bead surface structure formed by a plurality of hemispherical surfaces. The light emitted by the LED lamp beads is emitted through the bottom of the receiving groove and the light emitting surface; the protrusion is a scale-shaped structure; the LED lens and the LED lamp beads are arranged in a circular symmetrical manner; the light emission angle of the light emitted by the LED lamp beads is 60°; The transparent substrate is a stepped structure, including a first stepped layer and a second stepped layer with a diameter smaller than the first stepped layer, the light emitting surface is located on the first stepped layer, and the plurality of lens portions are distributed on the second stepped layer; the edge of the second stepped layer is smoothly connected to the first stepped layer; The light incident surface is provided with a plurality of reinforcing ribs, and the reinforcing ribs extend from the center of the light incident surface along the radial direction of the transparent substrate, and the plurality of reinforcing ribs divide the light incident surface into a plurality of fan-shaped light emitting areas; a reinforcing layer is provided in the middle of the light emitting surface.

2. The LED lens according to claim 1, characterized in that: The light incident surface is a matte surface.

3. The LED lens according to claim 1, characterized in that: The plurality of lens portions are distributed in a fan-shaped array within the light-emitting area.

4. The LED lens according to claim 1, characterized in that: The reinforcing rib is a strip structure with a semicircular cross section.

5. The LED lens according to claim 1, characterized in that: The transparent substrate and the plurality of lens portions are an integral structure, and the transparent substrate and the plurality of lens portions are integrally formed by an injection molding process.

6. The LED lens according to claim 1, characterized in that: The reinforcement layer protrudes from the light emitting surface, and the edge of the reinforcement layer is smoothly connected to the light emitting surface.

7. The LED lens according to claim 1, characterized in that: The surface of the reinforcement layer is a curved surface.

8. The LED lens according to claim 1, characterized in that: The diameter of the transparent substrate is 288.2 mm.

9. The LED lens according to claim 1, characterized in that: The LED lens is made of polycarbonate material.

10. A mining lamp, characterized in that: The LED lens comprises the LED lens as claimed in any one of claims 1 to 9.

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