Explosion-proof status light

Abstract

The utility model discloses a kind of explosion-proof state lamps, comprising: PCB board, glass cover, several LED light sources and annular lens, PCB board and several LED light sources are all arranged in the inner side of glass cover, and several LED light sources are annular and evenly arranged on the upper end of PCB board, annular lens is arranged opposite with LED light source, and annular lens is connected with the upper end of PCB board.The application of the utility model is proposed, a kind of explosion-proof state lamp, which is evenly distributed on the upper end of PCB board by annular LED light source, and makes LED light source cooperate with annular lens, can solve the problem of uneven side light caused by traditional side light distribution source, also can improve the utilization of light, so that the light emitted by LED light source can meet the requirements of more than 2°-10° range above horizontal plane, more than 700cd of luminous intensity under the flicker frequency of 120 times / min (duty ratio 50%), more than 176cd of luminous intensity at other angles above horizontal plane under the condition that the overall height of explosion-proof state lamp is less than 150mm.

Description

Technical Field

[0001] This utility model relates to the field of lighting equipment technology, and in particular to an explosion-proof status light. Background Technology

[0002] Explosion-proof status lights are commonly used on marine helicopter platforms. As critical facilities in offshore operations, the safe operation of marine helicopter platforms is paramount, and explosion-proof status lights clearly indicate their operational status to the outside world. According to relevant standards, explosion-proof status lights used on marine helicopter platforms must be installed horizontally, and the total height of the luminaire must be strictly controlled to be less than 150mm. Furthermore, there are stringent requirements for luminous performance: at a flashing frequency of 120 times / minute (50% duty cycle), the luminous intensity must be greater than 700 cd within a specific angle range of 2°-10° above the horizontal plane; and at other angles above the horizontal plane, the luminous intensity must be greater than 176 cd.

[0003] However, the characteristics of commonly used LED light sources are significantly at odds with these specific optical requirements. Typically, horizontally placed LED light sources exhibit high light intensity at the top and low light intensity on the sides, which is the opposite of the requirement for explosion-proof status lights, which require low light intensity at the top and high light intensity on the sides. To meet these optical requirements, optical components must be used to adjust the light distribution, meaning reducing the light from the top of the LED light source while enhancing the light from the sides. Currently, mainstream explosion-proof status lights on the market address this issue using two main methods: one is to use a side-distributed light source, but this often results in uneven side illumination, leading to an unsatisfactory light distribution when displaying the platform's status, potentially affecting the accurate assessment of the platform's condition; the other is to use a horizontally distributed light source with a reflector to reflect the light from the top to the sides, but this method suffers from low light utilization. To meet the specified light intensity requirements, the height of the light fixture must be increased, resulting in a height exceeding 150mm, which does not meet the standard requirements and thus affects its normal use on marine helicopter platforms. Utility Model Content

[0004] In view of this, in order to solve the above problems, the purpose of this utility model is to provide an explosion-proof status light, including: a PCB board, a glass cover, a plurality of LED light sources and an annular lens. The PCB board and the plurality of LED light sources are both disposed inside the glass cover, and the plurality of LED light sources are evenly disposed in a ring at the upper end of the PCB board. The annular lens is disposed opposite to the LED light sources and is connected to the upper end of the PCB board.

[0005] In another preferred embodiment, the lower end of the annular lens is provided with a first annular groove and a second annular groove, the inner side of the first annular groove is provided with the second annular groove, and a plurality of the LED light sources are disposed in the first annular groove.

[0006] In another preferred embodiment, the upper end of the annular lens is provided with a third annular groove, which is located between the first annular groove and the second annular groove.

[0007] In another preferred embodiment, the annular lens has a through-hole in the middle.

[0008] In another preferred embodiment, the annular lens has several threaded holes, and bolts are installed in the threaded holes. The annular lens is connected to the PCB board through the bolts.

[0009] In another preferred embodiment, a plurality of the threaded holes are evenly distributed along the outer circumference of the circular hole.

[0010] In another preferred embodiment, it further includes a pressure ring disposed around the periphery of the glass cover.

[0011] The present invention, by adopting the above-mentioned technical solution, has the following positive effects compared with the prior art: Through the application of the present invention, an explosion-proof status light is proposed. By uniformly distributing LED light sources in a ring at the upper end of the PCB board and cooperating with the ring lens, it can ensure that the LED light source 3 emits light uniformly in the horizontal 360° direction, solving the problem of uneven side light emission caused by traditional side-distributed light sources. It can also improve light utilization, enabling the light emitted by the LED light source to meet the requirements of a luminous intensity greater than 700 cd at a flashing frequency of 120 times / minute (duty cycle 50%) within a range of 2°-10° above the horizontal plane, and a luminous intensity greater than 176 cd at other angles above the horizontal plane, even when the overall height of the explosion-proof status light is less than 150mm. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of an explosion-proof status light according to the present invention;

[0013] Figure 2 This is a schematic diagram of the structure of the annular lens of an explosion-proof status light according to the present invention;

[0014] Figure 3 This is a schematic diagram of the LED light source of an explosion-proof status light according to the present invention.

[0015] In the attached image:

[0016] 1. PCB board; 2. Glass cover; 3. LED light source; 4. Annular lens; 41. First annular groove; 42. Second annular groove; 43. Third annular groove; 44. Round hole; 45. Threaded hole. Detailed Implementation

[0017] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0018] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front", "back", "horizontal", and "vertical" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] It should be noted that the terms "horizontal" and "vertical" in this utility model are used to describe approximate positional relationships, and not strictly "horizontal plane" or "vertical plane".

[0020] like Figure 1-3 As shown, a preferred embodiment of an explosion-proof status light is provided, including: a PCB board 1, a glass cover 2, a plurality of LED light sources 3, and a ring lens 4. The PCB board 1 and the plurality of LED light sources 3 are both disposed inside the glass cover 2. The glass cover 2 can provide protection for the internal PCB board 1 and the plurality of LED light sources 3 to prevent damage from external dust and other sources. The plurality of LED light sources 3 are evenly arranged in a ring at the upper end of the PCB board 1, which helps to ensure that the LED light sources 3 can emit light uniformly in the horizontal 360° direction. The ring lens 4 is disposed opposite to the LED light sources 3 and is connected to the upper end of the PCB board 1.

[0021] Furthermore, in a preferred embodiment, the lower end of the annular lens 4 is provided with a first annular groove 41 and a second annular groove 42, and the inner side of the first annular groove 41 is provided with the second annular groove 42. A plurality of LED light sources 3 are disposed in the first annular groove 41. Furthermore, by providing the first annular groove 41, the LED light sources 3 can be closely matched with the annular lens 4, which is beneficial for the light emitted by the LED light sources 3 to enter the annular lens 4 better for refraction and reflection.

[0022] Furthermore, in a preferred embodiment, a third annular groove 43 is formed at the upper end of the annular lens 4, and the third annular groove 43 is located between the first annular groove 41 and the second annular groove 42. Furthermore, the third annular groove 43 can further optimize the propagation path of the light emitted by the LED light source 3 within the annular lens 4, promoting a more ideal light distribution through multiple refractions and reflections.

[0023] Furthermore, as a preferred embodiment, a circular hole 44 is provided through the center of the annular lens 4.

[0024] Furthermore, as a preferred embodiment, the annular lens 4 has several threaded holes 45, and bolts are installed in the threaded holes 45. The annular lens 4 is connected to the PCB board 1 by the bolts.

[0025] Furthermore, as a preferred embodiment, a plurality of threaded holes 45 are evenly distributed along the outer circumference of the circular hole 44.

[0026] Furthermore, as a preferred embodiment, it also includes a retaining ring, which is disposed around the glass cover 2. The retaining ring further reinforces the glass cover 2, enhancing the overall structural stability of the explosion-proof status light. In practical environments, especially in locations like marine helicopter platforms where complex conditions such as vibration and impact may occur, the retaining ring ensures that the glass cover 2 will not loosen or be damaged by external forces, thereby guaranteeing the normal operation of the explosion-proof status light.

[0027] The working principle of this utility model is as follows: When in use, the LED light source 3 can emit light. The light can enter the annular lens 4 through the first annular groove 41. After multiple refractions and reflections inside the annular lens 4, some of the light that might have originally propagated upwards will be guided to the side, and some of the side light will also be further enhanced and homogenized. Finally, through the combined action of the annular lens 4 and the glass cover 2, the emitted light can meet the requirements of having a luminous intensity greater than 700 cd at a flashing frequency of 120 times / minute (duty cycle of 50%) within a range of 2°-10° above the horizontal plane, and a luminous intensity greater than 176 cd at other angles above the horizontal plane, provided that the overall height of the explosion-proof lamp is less than 150 mm.

[0028] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An explosion-proof status light, characterized in that, include: The system comprises a PCB board, a glass cover, several LED light sources, and a ring lens. The PCB board and several LED light sources are both disposed inside the glass cover, and the several LED light sources are evenly arranged in a ring at the upper end of the PCB board. The ring lens is positioned opposite the LED light sources and is connected to the upper end of the PCB board.

2. The explosion-proof status light according to claim 1, characterized in that, The lower end of the annular lens is provided with a first annular groove and a second annular groove, the inner side of the first annular groove is provided with the second annular groove, and a plurality of the LED light sources are disposed in the first annular groove.

3. The explosion-proof status light according to claim 2, characterized in that, The upper end of the annular lens has a third annular groove, which is located between the first annular groove and the second annular groove.

4. The explosion-proof status light according to claim 1, characterized in that, The annular lens has a through hole in its center.

5. The explosion-proof status light according to claim 3, characterized in that, The annular lens has several threaded holes, and bolts are installed in the threaded holes. The annular lens is connected to the PCB board through the bolts.

6. The explosion-proof status light according to claim 5, characterized in that, The threaded holes are evenly distributed along the outer circumference of the circular hole.

7. The explosion-proof status light according to claim 1, characterized in that, Also includes: A pressure ring is disposed around the outer periphery of the glass cover.

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