A lens structure for fire-fighting lights

Abstract

This utility model relates to the field of fire-fighting light technology, specifically a lens structure for fire-fighting lights, including a circuit board and a lens. The circuit board has at least one light source, and the lens has a protrusion corresponding to the light source. The protrusion protrudes outwards in a direction away from the light source, and has an inwardly concave arc surface on the side closest to the light source. The center of the protrusion and the light source are located on the same vertical plane, and the height of the center of the protrusion is lower than the height of the light source. Furthermore, the distance between the left and right sides of the protrusion is greater than the distance between the top and bottom sides. Therefore, by making the height of the center of the protrusion lower than the height of the light source, this utility model causes most of the light from the light source to be angled downwards after passing through the lens. This increases the light intensity detected by the ground metering point and reduces the detected vertical angle. Simultaneously, the distance between the left and right sides of the protrusion is greater than the distance between the top and bottom sides, further satisfying the angle requirements.

Description

Technical Field

[0001] This utility model relates to the field of fire-fighting light technology, and specifically to a lens structure for fire-fighting lights. Background Technology

[0002] Firefighting lights are terminal equipment in fire emergency evacuation guidance systems, primarily used to provide lighting and evacuation guidance in emergencies such as fires, thereby ensuring the safe evacuation of personnel. For better implementation, certain standards are required: the ground-based light metering point at a distance of 50 meters must meet requirements for light intensity and angle (i.e., illumination range), with the angle requirement being smaller vertically but larger horizontally. However, because the light is centrally positioned, its light generally spreads outwards, with half of the light radiating upwards. This upward-spreading light is ineffective at the ground-based light metering point, thus weakening the detected light intensity and increasing the detected vertical angle. Summary of the Invention

[0003] The purpose of this invention is to provide a lens structure for fire-fighting lights. By making the height of the center of the protrusion lower than the height of the light source, most of the light from the light source is tilted downwards after passing through the lens. This increases the light intensity detected by the ground light metering point and reduces the angle between the detected vertical angle, thus solving the problem of excessive upward dispersion of the light from the light source.

[0004] The purpose of this utility model is achieved as follows:

[0005] A lens structure for a fire-fighting light includes a circuit board and a lens, wherein at least one light source is provided on the circuit board, and the lens is provided with a protrusion corresponding to the light source. The protrusion protrudes outward in a direction away from the light source, and the protrusion is provided with an inwardly concave arc surface on the side closer to the light source.

[0006] The center of the protrusion is located on the same vertical plane as the light source, and the height of the center of the protrusion is lower than the height of the light source. Furthermore, the distance between the left and right sides of the protrusion is greater than the distance between the top and bottom sides.

[0007] Preferably, the protrusion has a groove one on the side near the light source, and the bottom surface of the groove one is the arc surface one, and the four sides of the groove one are inwardly concave arc surfaces two, and the diameter of the groove one gradually increases along the direction near the light source.

[0008] Preferably, the protrusion has a second groove communicating with the first groove on the outer side of the first groove;

[0009] Or / and, the lens has a plurality of protrusions on the outer side of the groove.

[0010] Preferably, it also includes a heat sink, and the top of the heat sink is provided with a mounting post and the circuit board, and the bottom of the lens abuts against the top of the mounting post and the lens and the mounting post are connected by fasteners. The bottom of the heat sink is provided with a placement groove, and a fan is built into the placement groove.

[0011] Preferably, the heat sink is provided with a mounting bracket and a connecting bracket on its upper and lower sides, respectively, and the connecting bracket has an opening to allow for air circulation between the inside and outside. A lampshade is provided between the mounting bracket and the heat sink, and a sealing element is provided between the lampshade and the heat sink, with the circuit board located inside the sealing element.

[0012] Preferably, the bottom of the sealing element is provided with a raised strip, and the heat dissipation element is provided with a groove corresponding to the raised strip;

[0013] Or / and, a raised strip is provided on the side of the lampshade that contacts the seal.

[0014] Preferably, the heat sink has a mounting portion on one side, and the mounting portion has a channel for inserting the connecting rod and the wire, and the heat sink has a through hole above the mounting portion that communicates with the channel and is used for the wire to pass through.

[0015] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0016] This invention features a protrusion whose center height is lower than the light source height, causing most of the light from the light source to tilt downwards after passing through the lens. This increases the light intensity detected by the ground metering point and reduces the angle between the detected top and bottom. At the same time, the distance between the left and right sides of the protrusion is greater than the distance between the top and bottom sides, thus further satisfying the angle requirements and producing a light spot that is long on the left and right and short on the top and bottom. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is one of the cross-sectional structural schematic diagrams of this utility model.

[0019] Figure 3 This is one of the structural diagrams of the present invention when disassembled.

[0020] Figure 4 This is the second structural diagram of the present invention when disassembled.

[0021] Figure 5 This is a magnified schematic diagram of the lens section.

[0022] Figure 6 This is the second cross-sectional structural schematic diagram of the present invention.

[0023] Reference numerals: 1-Circuit board; 11-Light source; 2-Lens; 21-Protrusion; 22-Gutter 1;

[0024] 221-Arc surface one; 222-Arc surface two; 23-Groove two; 24-Protrusion; 3-Heat dissipation component; 31-Placement slot;

[0025] 32-Slot; 33-Through hole; 4-Mounting post; 5-Fan; 6-Mounting bracket; 7-Connecting bracket; 8-Lamp cover;

[0026] 81-Protrusion 2; 9-Seal; 91-Protrusion 1; 10-Mounting part; 101-Channel. Detailed Implementation

[0027] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0028] like Figures 1-6 As shown, a lens structure for a fire-fighting light is characterized by comprising a circuit board 1 and a lens 2, wherein at least one light source 11 is provided on the circuit board 1, and the lens 2 is provided with a protrusion 21 corresponding to the light source 11, wherein the protrusion 21 protrudes outward in a direction away from the light source 11, and the protrusion 21 is provided with an inwardly concave arc surface 221 on the side near the light source 11.

[0029] Therefore, in actual use, the light first diffuses through the inwardly concave arc surface 221 and then converges through the protrusion 21, which can ensure the required light intensity and illumination range to a certain extent.

[0030] Meanwhile, the center of the protrusion 21 and the light source 11 are located on the same vertical plane, and the height of the center of the protrusion 21 is lower than the height of the light source 11, and the distance between the left and right sides of the protrusion 21 is greater than the distance between the top and bottom sides.

[0031] Therefore, in actual use, the height of the center of the protrusion 21 is lower than the height of the light source 11, so that most of the light from the light source 11 is tilted downward after passing through the lens 2, which increases the intensity detected by the ground metering point and reduces the angle between the detected top and bottom. At the same time, the distance between the left and right sides of the protrusion 21 is greater than the distance between the top and bottom sides, which can further meet the angle requirements, so that a light spot that is long on the left and right and short on the top and bottom can be presented.

[0032] Meanwhile, the protrusion 21 has a groove 22 on the side near the light source 11, and the bottom surface of the groove 22 is an arc surface 221, and the sides of the groove 22 are inwardly concave arc surfaces 222, and the diameter of the groove 22 gradually increases along the direction near the light source.

[0033] Therefore, in actual use, the setting of the arc surface 222 can further diffuse the light, and since the diameter of the groove 22 gradually increases along the direction closer to the light source and gradually decreases along the direction away from the light source, it can guide and converge the light.

[0034] Secondly, the lens 2 has several protrusions 24 on the outside of the groove 22, which can converge the light that does not reach the groove 22. Moreover, the protrusion 21 has a groove 23 on the outside of the groove 22 that communicates with the groove 22.

[0035] like Figures 1-6 As shown, it also includes a heat sink 3, and the top of the heat sink 3 is provided with a mounting post 4 and a circuit board 1. The bottom of the lens 2 abuts against the top of the mounting post 4 and is connected to the mounting post 4 by fasteners. The bottom of the heat sink 3 is provided with a placement groove 31, and the placement groove 31 is built into a fan 5.

[0036] The fasteners are screws. Therefore, in actual use, the heat sink 3 and the fan 5 are used to dissipate heat from the circuit board 1. Secondly, the lens 2 is installed by connecting the screw to the mounting post 4, thereby placing the lens 2 above the circuit board 1. The mounting post 4 and the heat sink 3 are connected by threads.

[0037] Meanwhile, mounting brackets 6 and connecting brackets 7 are respectively provided on the upper and lower sides of the heat sink 3. The connecting bracket 7 has openings for air circulation between the inside and outside. A lampshade 8 is provided between the mounting bracket 6 and the heat sink 3. A sealing element 9 is provided between the lampshade 8 and the heat sink 3, and the circuit board 1 is located inside the sealing element 9.

[0038] The lampshade 8 is made of a light-transmitting material, and the sealing element 9 is designed to be waterproof and thus protect the road plate 1.

[0039] Secondly, the structure of the sealing element 9 is as follows: Firstly, a raised strip 91 is provided at the bottom of the sealing element 9, and a groove 32 is provided on the heat dissipation element 3 corresponding to the raised strip 91. Therefore, the installation and positioning of the sealing element 9 are achieved through the matching of the raised strip 91 and the groove 32. At the same time, a raised strip 81 is provided on the side of the lamp cover 8 that contacts the sealing element 9, and the raised strip 81 can squeeze the sealing element 9 to prevent the sealing element 9 from moving.

[0040] like Figures 1-6 As shown, a mounting part 10 is provided on one side of the heat sink 3, and the mounting part 10 has a channel 101 for inserting the connecting rod and the wire. The heat sink 3 has a through hole 33 above the mounting part 10 that communicates with the channel 101 and is used for the wire to pass through.

[0041] The present invention is placed on a pole, and connecting rods are provided on both sides of the pole. The installation part 10 is adapted to the connecting rod to realize the installation of the present invention. In order to facilitate the connection between the wires on the pole and the circuit board 1, the wires are allowed to pass through the channel 101 and enter the interior of the present invention, and are connected to the circuit board 1 through the through hole 33.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. However, this utility model is not limited to the above embodiments; therefore, various changes and modifications can be made without departing from the principles and scope of this utility model, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A lens structure for a fire-fighting light, characterized in that, It includes a circuit board (1) and a lens (2), and the circuit board (1) is provided with at least one light source (11), and the lens (2) is provided with a protrusion (21) corresponding to the light source (11). The protrusion (21) protrudes outward in a direction away from the light source (11), and the protrusion (21) is provided with an inwardly concave arc surface (221) on the side close to the light source (11). The center of the protrusion (21) and the light source (11) are located on the same vertical plane, and the height of the center of the protrusion (21) is lower than the height of the light source (11), and the distance between the left and right sides of the protrusion (21) is greater than the distance between the top and bottom sides.

2. The lens structure for a fire-fighting light according to claim 1, characterized in that: The protrusion (21) has a groove (22) on the side near the light source (11), and the bottom surface of the groove (22) is the arc surface (221), and the sides of the groove (22) are inwardly concave arc surfaces (222), and the diameter of the groove (22) gradually increases along the direction near the light source.

3. The lens structure for a fire-fighting light according to claim 2, characterized in that: The protrusion (21) has a groove (23) on the outside of the groove (22) that communicates with the groove (22); Or / and, the lens (2) has a plurality of protrusions (24) on the outside of the groove (22).

4. A lens structure for a fire-fighting light according to any one of claims 1-3, characterized in that: It also includes a heat sink (3), and the top of the heat sink (3) is provided with a mounting post (4) and the circuit board (1), and the bottom of the lens (2) abuts against the top of the mounting post (4) and the lens (2) and the mounting post (4) are connected by fasteners. The bottom of the heat sink (3) is provided with a placement groove (31), and the placement groove (31) is equipped with a fan (5).

5. A lens structure for a fire-fighting light according to claim 4, characterized in that: The heat sink (3) is provided with a mounting bracket (6) and a connecting bracket (7) on its upper and lower sides respectively. The connecting bracket (7) has an opening for air circulation. A lampshade (8) is provided between the mounting bracket (6) and the heat sink (3). A sealing element (9) is provided between the lampshade (8) and the heat sink (3). The circuit board (1) is located inside the sealing element (9).

6. A lens structure for a fire-fighting light according to claim 5, characterized in that: The bottom of the sealing element (9) is provided with a protrusion (91), and the heat dissipation element (3) is provided with a slot (32) corresponding to the protrusion (91); Or / and, a raised strip (81) is provided on the side of the lampshade (8) that contacts the seal (9).

7. A lens structure for a fire-fighting light according to claim 4, characterized in that: The heat sink (3) has a mounting part (10) on one side, and the mounting part (10) has a channel (101) for inserting the connecting rod and the wire. The heat sink (3) has a through hole (33) above the mounting part (10) that communicates with the channel (101) and is used for the wire to pass through.

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