High light efficiency lens, light emitting assembly and mining lamp

Abstract

This invention provides a high-efficiency lens. The distance H1 between the light-incident surface and the light-exit surface of the lens at the lens center normal satisfies the condition: 1.5mm < H1 < 3mm. The step connecting one side of the light-incident surface has a thickness H2 in the direction parallel to the center normal. When the light-exit angle is in the range of 45 degrees to 95 degrees, H2 satisfies: 0.3*H1 ≤ H2 ≤ 0.9*H1; when the light-exit angle is in the range of 45 degrees to 60 degrees... For H2, the following conditions must be met: 0.3*H1≤H2≤0.5*H1; when the light emission angle is in the range of 60 degrees to 80 degrees, for H2, the following conditions must be met: 0.5*H1≤H2≤0.75*H1; when the light emission angle is in the range of 80 degrees to 95 degrees, for H2, the following conditions must be met: 0.75*H1≤H2≤0.9*H1; the width W1 of the light emission surface in the front view and the width W2 of the light incident surface must meet: 0.8*W1≤W2≤W1.

Description

Technical Field

[0001] This utility model relates to lighting devices, and more particularly to industrial and mining lamps. Background Technology

[0002] Industrial and mining lamps have a wide range of applications, primarily including mining sites such as coal mines and metal mines, industrial sites such as factories and workshops, and marine sites such as docks and ships. In industrial sites such as factories and workshops, the high brightness and high efficiency of industrial and mining lamps can meet the lighting needs of these locations and ensure normal operation. Furthermore, industrial and mining lamps are also used in marine sites such as docks and ships, where lamps need to be waterproof and corrosion-resistant to ensure normal use in marine environments. Previously, in order to ensure a glare index (UGR) ≤28, light transmission efficiency was sacrificed for industrial and mining lamp lenses. Therefore, it was difficult to exceed 92% transmittance, and generally only 85%-90% transmittance could be guaranteed. Utility Model Content

[0003] The main technical problem to be solved by this utility model is to provide a high light efficiency lens that can achieve a light transmittance of 96%-97% while satisfying the glare index (UGR) ≤28.

[0004] To solve the above-mentioned technical problems, this utility model provides a high-efficiency lens, which is divided into at least two fan-shaped regions along the circumference, and each region is provided with the same lens unit;

[0005] The lens unit includes an incident light surface and an exit light surface, as well as a step disposed outside the incident light surface, the outer side of which is the base of the lens unit; the distance H1 between the incident light surface and the exit light surface at the lens center normal satisfies the following range: 1.5mm < H1 < 3mm.

[0006] The step connects to one side of the light-receiving surface, and its thickness in the direction parallel to the central normal is H2. When the light emission angle is in the range of 45 degrees to 95 degrees, H2 satisfies: 0.3*H1≤H2≤0.9*H1; when the light emission angle is in the range of 45 degrees to 60 degrees, H2 satisfies: 0.3*H1≤H2≤0.5*H1; when the light emission angle is in the range of 60 degrees to 80 degrees, H2 satisfies: 0.5*H1≤H2≤0.75*H1; when the light emission angle is in the range of 80 degrees to 95 degrees, H2 satisfies: 0.75*H1≤H2≤0.9*H1.

[0007] The width W1 of the light-emitting surface in the front view and the width W2 of the light-incident surface satisfy the following condition: 0.8*W1≤W2≤W1.

[0008] In a preferred embodiment: the base height h of the lens unit satisfies 1.5mm≤h≤2mm.

[0009] In a preferred embodiment: the width W3 of the light-emitting surface in the side view satisfies: 0.8≤W3 / W1≤1.25.

[0010] In a preferred embodiment: the lens unit has a chamber for placing a lamp bead, and the angle θ between the light incident surface and the lamp bead satisfies: 160°≤θ≤240°.

[0011] This utility model also provides a light-emitting component, including: an LED light source board and a lens as described above, wherein the LED light source board is provided with LED beads corresponding to the lens unit.

[0012] This utility model also provides an industrial and mining lamp, which is equipped with the light-emitting component described above.

[0013] This invention provides a high-efficiency lens that, while satisfying a glare index (UGR) ≤ 28, can achieve a light transmittance of 96%-97% and can produce a uniform light spot. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the lens in a preferred embodiment of the present invention;

[0015] Figure 2 This is a top view of the lens in a preferred embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the lens unit in a preferred embodiment of the present invention;

[0017] Figure 4 This is a schematic diagram of the light source plate in a preferred embodiment of the present invention;

[0018] Figure 5 This is a perspective view of the lens unit in a preferred embodiment of the present invention;

[0019] Figure 6 This is a 45° frontal view of the lens unit in a preferred embodiment of the present invention;

[0020] Figure 7 This is a front view of the lens unit in a preferred embodiment of the present invention;

[0021] Figure 8 This is a front sectional view of the lens unit in a preferred embodiment of the present invention;

[0022] Figure 9 This is a side view of the lens unit in a preferred embodiment of the present invention;

[0023] Figure 10 This is a side sectional view of the lens unit in a preferred embodiment of the present invention;

[0024] Figure 11 This is a light distribution curve diagram of the light-emitting component in a preferred embodiment of the present invention;

[0025] Figure 12 This is a light spot diagram of the light-emitting component in a preferred embodiment of the present invention. Detailed Implementation

[0026] To make the technical solution and features of this utility model clearer, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific examples. It should be understood that these examples are only for illustrating this utility model and are not intended to limit the scope of this utility model. After reading this utility model, any modifications of this utility model by those skilled in the art in various equivalent forms fall within the scope defined by the appended claims.

[0027] This embodiment provides a light-emitting assembly, including a lens 1 and a light source plate 2. The lens 1 is divided circumferentially into at least two fan-shaped regions, each region containing the same lens unit 17; the light source plate 2 has corresponding LED beads for each lens unit 17. In this embodiment, there are six fan-shaped regions, such as... Figure 2 The numbers 11, 12, 13, 14, 15, and 16 shown above can be adjusted according to actual needs.

[0028] To increase light transmittance, the lens unit 17 includes an incident surface 173 and an exit surface 171, as well as a step 174 disposed outside the incident surface 173, the outer side of which is the base of the lens unit 17; the distance H1 between the incident surface 173 and the exit surface 171 at the lens center normal 176 satisfies the condition: 1.5mm < H1 < 3mm.

[0029] The step 174 connects to one side 177 of the light-incident surface 173. Its thickness in the direction parallel to the lens center normal 176 is H2. When the light-out angle is between 45 and 95 degrees, H2 satisfies: 0.3*H1≤H2≤0.9*H1; when the light-out angle is between 45 and 60 degrees, H2 satisfies: 0.3*H1≤H2≤0.5*H1; when the light-out angle is between 60 and 80 degrees, H2 satisfies: 0.5*H1≤H2≤0.75*H1; when the light-out angle is between 80 and 95 degrees, H2 satisfies: 0.75*H1≤H2≤0.9*H1.

[0030] The width W1 of the light-emitting surface 171 in the front view and the width W2 of the light-incident surface 173 satisfy: 0.8*W1≤W2≤W1. The height h of the base 172 of the lens unit 17 satisfies 1.5mm≤h≤2mm. The width W3 of the light-emitting surface 171 in the side view satisfies: 0.8≤W3 / W1≤1.25. The lens unit 17 has a chamber for placing a lamp bead, and the angle θ between the light-incident surface 173 and the light-emitting surface 175 of the lamp bead satisfies: 160°≤θ≤240°. Figure 10 In the diagram, 178 is the line connecting the edge of the step to the left edge of the LED bead, and 179 is the line connecting the edge of the step to the right edge of the LED bead.

[0031] The aforementioned light-emitting components, while meeting the glare index (UGR) ≤ 28, can achieve a light transmittance of 96%-97%, such as... Figure 11 As shown, its beam angle is around 95°, the light transmittance of the entire lamp exceeds 95%, and it can achieve a uniform light spot with an overall uniformity of 80% and relatively clear boundaries.

[0032] The aforementioned light-emitting components can be used in industrial and mining lamps.

[0033] The above is only one specific embodiment of the present utility model, but the design concept of the present utility model is not limited thereto. Any non-substantial modifications made to the present utility model using this concept shall be deemed as an infringement of the protection scope of the present utility model.

Claims

1. A high-efficiency lens, characterized in that: The lens is divided into at least two fan-shaped regions along the circumference, and each region is provided with the same lens unit; The lens unit includes an incident light surface and an exit light surface, as well as a step disposed outside the incident light surface, the outer side of which is the base of the lens unit; the distance H1 between the incident light surface and the exit light surface at the lens center normal satisfies the range of 1.5mm < H1 < 3mm. The step connects to one side of the light-receiving surface, and its thickness in the direction parallel to the central normal is H2. When the light emission angle is in the range of 45 degrees to 95 degrees, H2 satisfies: 0.3*H1≤H2≤0.9*H1; when the light emission angle is in the range of 45 degrees to 60 degrees, H2 satisfies: 0.3*H1≤H2≤0.5*H1; when the light emission angle is in the range of 60 degrees to 80 degrees, H2 satisfies: 0.5*H1≤H2≤0.75*H1; when the light emission angle is in the range of 80 degrees to 95 degrees, H2 satisfies: 0.75*H1≤H2≤0.9*H1. The width W1 of the light-emitting surface in the front view and the width W2 of the light-incident surface satisfy the following condition: 0.8*W1≤W2≤W1.

2. The high-efficiency lens according to claim 1, characterized in that: The base height h of the lens unit satisfies 1.5mm≤h≤2mm.

3. A high-efficiency lens according to claim 1, characterized in that: The width W3 of the light-emitting surface in the side view satisfies: 0.8≤W3 / W1≤1.

25.

4. A high-efficiency lens according to claim 1, characterized in that: The lens unit has a chamber for placing the lamp bead, and the angle θ between the light incident surface and the lamp bead satisfies: 160°≤θ≤240°.

5. A light-emitting component, characterized in that... It includes: an LED light source board and a lens according to any one of claims 1-4, wherein the LED light source board is provided with LED beads corresponding to the lens unit.

6. A mining lamp, characterized in that... It is equipped with the light-emitting component as described in claim 5.

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