LED warning lamp

Abstract

The utility model discloses an LED warning lamp which comprises a shell, a power source, a main control board and an LED lamp, the main control board and the LED lamp are arranged in the shell, an LED drive circuit is arranged on the main control board, the power source supplies power to the main control board, and the main control board drives the LED lamp to emit warning light through the LED drive circuit. The LED warning lamp further comprises a shielding cover, the shielding cover wraps the shell, and a light emitting window is arranged at the position, corresponding to the LED lamp, of the shielding cover and used for emitting light emitted by the LED lamp. Due to the fact that the LED warning lamp is wrapped by the shielding cover and based on the principle of the Faraday cage, external electromagnetic radiation can be effectively resisted, and the problems that when an existing LED warning lamp is used in a strong external electromagnetic field environment, flicker, brightness change and even damage are possibly caused by electromagnetic interference are solved.

Description

Technical Field

[0001] This utility model relates to the field of warning light technology, specifically to an LED warning light, and more particularly to an LED warning light that can resist external electromagnetic interference. Background Technology

[0002] LEDs (Light Emitting Diodes) are already very common in our daily lives, with applications mainly in LED displays and LED lighting. LED displays are commonly seen in airports, high-speed rail stations, large stadiums, and large shopping malls, and with technological advancements and cost reductions, large-screen televisions using LED technology will soon be commonplace in ordinary households. LED lighting is also ubiquitous; for example, few homes now use incandescent or fluorescent lamps for lighting, replaced by various LED ceiling lights, LED spotlights, and LED light strips. Flashlights have also almost entirely replaced traditional bulbs with high-power LED chips.

[0003] However, LED applications extend beyond displays and lighting. They have long been used as warning lights, with various LED warning lights applied in diverse scenarios. For example, the applicant's previously filed Chinese utility model patent (202223315227.4) describes a warning light for power transmission lines. In reality, many scenarios require warning lights, and various warning lights are already in use in many situations. However, existing warning lights generally do not consider preventing electromagnetic radiation. On one hand, LED warning lights themselves generate a certain amount of electromagnetic radiation during operation, but this radiation is very small and generally not a major concern. On the other hand, LED warning lights also need to resist external electromagnetic radiation to prevent their internal circuitry from being affected by external electromagnetic fields, ensuring normal operation. Especially in harsh environments where strong external electromagnetic fields exist, electromagnetic interference may cause flickering, brightness changes, or even damage, thus requiring improvement. Summary of the Invention

[0004] The purpose of this invention is to provide an LED warning light that solves the problem that current LED warning lights may flicker, change in brightness, or even be damaged due to electromagnetic interference when used in environments with strong external electromagnetic fields.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] An LED warning light includes a housing, a power supply, a main control board and an LED light disposed within the housing. The main control board has an LED driving circuit, and the power supply supplies power to the main control board. The main control board drives the LED light to emit warning light through the LED driving circuit. The LED warning light is characterized in that it further includes a shielding cover, which is wrapped around the housing and has a light-emitting window corresponding to the position of the LED light for the light emitted by the LED light to be emitted.

[0007] In a preferred embodiment, the shielding cover is further provided with a light-entry window, and the LED warning light has a solar panel, with the position of the light-entry window corresponding to the position of the solar panel.

[0008] In a preferred embodiment, the shielding cover is divided into two shielding caps, which are respectively inserted into the two ends of the housing to form a complete shielding cover.

[0009] In a further preferred embodiment, the outer end of the shielding cap has an opening, and a lap piece extends partially from one side of the opening, lapping to the opposite side along the diameter direction of the opening.

[0010] In a further preferred embodiment, the LED warning light includes a fixing device, through which the LED warning light can be fixed; and the shielding cap is also connected to the fixing device, thus forming an integral unit with the LED warning light.

[0011] In a further preferred embodiment, the fixing device includes: a large torsion spring, a small torsion spring, two fixing screws, and two large head screws; the top of the housing is provided with two mounting structures, and the large torsion spring and the small torsion spring are respectively inserted into the two mounting structures; the shielding cap extends out a fixing ear, and the fixing ear is provided with a through hole; the fixing screw passes through the through hole of the fixing ear, then passes through the large torsion spring or the small torsion spring, and is threadedly connected to the head screw, thereby realizing the connection between the large torsion spring, the small torsion spring and the outer shell, and also realizing the connection between the shielding cap and the housing.

[0012] In a further preferred embodiment, the inner end opening of the shielding cap has a notch, which forms two cantilevered arms around the opening.

[0013] The beneficial effects of this utility model are:

[0014] The LED warning light using the technical solution of this utility model, because it is wrapped in a shielding cover, can effectively resist external electromagnetic radiation based on the principle of Faraday cage. This solves the problem that current LED warning lights may flicker, change in brightness, or even be damaged due to electromagnetic interference when used in environments with strong external electromagnetic fields.

[0015] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of an LED warning light according to a specific embodiment of the present utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of another embodiment of an LED warning light according to this utility model;

[0018] Figure 3 This is an exploded view of an LED warning light according to a specific embodiment of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of a shielding cap in an LED warning light according to a specific embodiment of this utility model. Detailed Implementation

[0020] This specific embodiment provides an LED warning light, such as... Figures 1 to 3 As shown, the device includes: a housing 1, a power supply (located inside the housing 1, not shown in the figure), a main control board (located inside the housing 1, not shown in the figure) and an LED light 2 disposed inside the housing. The main control board has an LED driving circuit, and the power supply supplies power to the main control board. The main control board drives the LED light to emit warning light through the LED driving circuit. Unlike existing LED warning lights, this LED warning light also includes a shielding cover 3, which surrounds the housing 1 and has a light-emitting window 31 corresponding to the position of the LED light 2, allowing the light emitted by the LED light 2 to escape.

[0021] The LED warning light that adopts the technical solution of the specific embodiment of this utility model can effectively resist external electromagnetic radiation because it is wrapped by the shielding cover 3. Based on the principle of Faraday cage, it solves the problem that LED warning lights may flicker, change in brightness or even be damaged due to electromagnetic interference when used in a strong external electromagnetic field environment.

[0022] In the preferred technical solution, such as Figure 4 As shown, the shielding cover 3 is also provided with a light-entry window 32, and the LED warning light has a solar panel (located inside the housing 1, not shown in the figure). The position of the light-entry window 32 corresponds to the position of the solar panel. The housing 1 itself has a lithium battery as a power source. By using the solar panel to replenish the lithium battery, the battery life of the LED warning light can be extended, or even extended indefinitely. In order not to affect the solar panel's ability to receive sunlight, it is necessary to open a light-entry window 32 on the shielding cover 3.

[0023] In the preferred embodiment, the shielding cover 3 is divided into two shielding caps 30, which are respectively inserted into the two ends of the housing 1 to form a complete shielding cover 3. This is done from the perspective of ease of manufacturing and installation by dividing the shielding cover 3 into two shielding caps 30. Of course, there are other methods that can achieve the same or similar effects as this utility model. For example, splitting the shielding cover 3 into two groove-shaped shielding parts should also fall within the protection scope of this utility model.

[0024] In a further preferred embodiment, the outer end of the shielding cap 30 is open, and a lap piece 33 extends partially from one side of the opening, lapping to the opposite side along the diameter of the opening. This method is not only more structurally stable, but also achieves a better shielding effect.

[0025] In a further preferred embodiment, the LED warning light includes a fixing device 4, through which the LED warning light can be fixed; the shielding cap 30 is also connected to the fixing device 4, forming an integral unit with the LED warning light. The fixing device 4 can be used by drones to fix the LED warning light to high-altitude power transmission lines using specialized tools.

[0026] In a further preferred embodiment, the fixing device 4 includes: a large torsion spring 41, a small torsion spring 42, two fixing screws 43, and two large head screws 44; the top of the housing 1 is provided with two mounting structures 11, and the large torsion spring 41 and the small torsion spring 42 are respectively inserted into the two mounting structures 11; the shielding cap 30 extends out a fixing ear 34, and the fixing ear 34 is provided with a through hole 35; the fixing screw 43 passes through the through hole 35 of the fixing ear 34, then passes through the large torsion spring 41 or the small torsion spring 42, and is threadedly connected to the head screw 44, thereby achieving the connection between the large torsion spring 41 and the small torsion spring 42 and the housing 1, and also achieving the connection between the shielding cap 30 and the housing 1.

[0027] In a further preferred embodiment, the inner end of the shielding cap 30 has a notch 36, forming two encircling cantilever arms 37 at the opening. For ease of installation and to avoid obstructing the solar panel, the inner end of the shielding cap 30 needs to be open. However, a completely open design would affect the shielding effect. Therefore, this specific embodiment allows for the opening of the two cantilever arms 37 before installation, and then the opening can be closed back to its original position after installation. This ensures both effective shielding and better connection with the outer casing.

[0028] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. An LED warning light, comprising a housing, a power supply, and a main control board and an LED light disposed within the housing, wherein the main control board has an LED driving circuit, the power supply supplies power to the main control board, and the main control board drives the LED light to emit warning light through the LED driving circuit, characterized in that... The LED warning light further comprises a shielding cover, which is wrapped outside the shell and is provided with a light exit window corresponding to the position of the LED light for the light emitted by the LED light to exit.

2. A LED warning light as claimed in claim 1, wherein, The shielding cover is further provided with a light entrance window, and the LED warning light is provided with a solar panel, and the position of the light entrance window corresponds to the position of the solar panel.

3. A LED warning light as claimed in claim 1 or 2, characterized in that The shielding cover is divided into two shielding caps, which are respectively sleeved into the shell from both ends to form a complete shielding cover.

4. A LED warning light as claimed in claim 3, wherein the LED is mounted on the printed circuit board. The shielding cap is open at the outer end, and a lap piece is partially extended on one side of the opening and is lapped to the opposite side along the diameter direction of the opening.

5. A LED warning light as claimed in claim 3, wherein, The LED warning light comprises a fixing device, and the LED warning light can be fixed through the fixing device; the shielding cap is connected with the fixing device, and the shielding cap and the LED warning light are connected into an integrated whole through the fixing device.

6. A LED warning light as claimed in claim 5, wherein the LED is mounted on a printed circuit board. The fixing device comprises a large torsion spring, a small torsion spring, two fixing screws and two large head screws; the top of the shell is provided with two mounting structures, the large torsion spring and the small torsion spring are respectively arranged in the two mounting structures; the shielding cap extends a fixing lug, and the fixing lug is provided with a through hole; the fixing screw passes through the through hole of the fixing lug, then passes through the large torsion spring or the small torsion spring, and is threadedly connected with the large head screw, so that the connection between the large torsion spring, the small torsion spring and the shell is realized, and the connection between the shielding cap and the shell is also realized.

7. A LED warning light as claimed in claim 3, wherein, The inner end of the shielding cap is provided with a notch at the opening, so that two ring-shaped cantilevers are formed at the opening.

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