Aircraft rescue illumination optical structure

Abstract

The invention discloses an aircraft rescue illumination optical structure. The aircraft rescue illumination optical structure comprises a light source plate. The light source plate is provided with a high-power LED and a reflective bowl corresponding to the high-power LED. And the high-power LEDs are arranged at the focal positions of the corresponding reflective bowls. The reflective surface of the reflective bowl is a free-form surface. The aircraft rescue lighting optical structure has the beneficial effects that excessive optical accessories are not needed, the light energy utilization rate of the high-power LED is improved only through the reflective bowl, the production cost of the aircraft rescue lighting optical structure is reduced, and meanwhile miniaturization, light weight and modularization of the aircraft rescue lighting optical structure are achieved.

Description

Technical Field

[0001] The present invention relates to the field of aircraft rescue lighting, and in particular, to an aircraft rescue lighting optical structure. Background Art

[0002] With the progress of technology, various military transport aircraft and helicopters have a certain search and rescue function. Especially in the rapidly changing modern warfare, it is extremely urgent to have aircraft dedicated to search and rescue, which requires aircraft rescue lights to provide the required environmental lighting for on-site rescue. The light emitted by the LED chips of existing aircraft rescue lights is in Lambertian distribution, and direct light emission will cause relatively large light energy loss. Summary of the Invention

[0003] The purpose of the present invention is to solve the problem of relatively large light kinetic energy loss existing in existing aircraft rescue lights, and to provide a new type of aircraft rescue lighting optical structure.

[0004] To achieve the above purpose, a technical solution provided by the present invention is: an aircraft rescue lighting optical structure, including: a light source board. The light source board has high-power LEDs and a reflecting bowl corresponding to the high-power LEDs. The high-power LEDs are at the focal positions of their corresponding reflecting bowls. The reflecting surface of the reflecting bowl is a free surface.

[0005] As a preferred solution of the aircraft rescue lighting optical structure, the free surface is configured such that the light emitted by the high-power LEDs with their own light emission angles in the range of 0° - 25° (excluding the endpoints of 25°) is directly emitted outwards without passing through the reflecting bowl, and the light emitted by the high-power LEDs with their own light emission angles in the range of 25° - 90° (including the endpoint of 25°) is emitted outwards through the reflecting bowl.

[0006] As a preferred solution of the aircraft rescue lighting optical structure, the high-power LEDs are divided into two groups, one group of the high-power LEDs is evenly arranged along the inner circle, and the other group of the high-power LEDs is evenly arranged along the outer circle.

[0007] As a preferred solution of the aircraft rescue lighting optical structure, it further includes: a lamp housing, the circular light source board is inside the lamp housing, and the circular light source board is fixed on the bottom wall of the lamp housing.

[0008] As a preferred solution of the aircraft rescue lighting optical structure, it further includes: heat dissipation fins, the heat dissipation fins are outside the lamp housing, and the heat dissipation fins are fixed on the bottom wall of the lamp housing.

[0009] Compared with the prior art, the beneficial effects of the present invention are at least as follows: Without excessive optical accessories, the light energy utilization rate of the high-power LED is improved only by the reflective bowl, the production cost of the aircraft rescue lighting optical structure is reduced, and at the same time, the miniaturization, light weight, and modularization of the aircraft rescue lighting optical structure are realized. Brief Description of the Drawings

[0010] Figure 1 It is a schematic structural diagram of the present invention.

[0011] Figure 2 It is a schematic structural diagram of the circular light source board of the present invention.

[0012] Figure 3 It is a schematic structural diagram of the reflective bowl of the present invention.

[0013] Figure 4 It is a simulation result diagram of the present invention. Detailed Embodiments

[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings through specific embodiments. It should be noted here that the description of these embodiments is for helping to understand the present invention, but does not constitute a limitation to the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0015] Please refer to Figures 1 to 3 , which shows an aircraft rescue lighting optical structure. The aircraft rescue lighting optical structure includes: a lamp housing 1, a circular light source board 2, heat dissipation fins 3, etc.

[0016] The circular light source board 2 is inside the lamp housing 1. The circular light source board 2 is fixed on the bottom wall of the lamp housing 1. The circular light source board 2 has high-power LEDs 21 and a reflective bowl 22 corresponding to the high-power LEDs 21. The high-power LEDs 21 are divided into two groups. One group of the high-power LEDs 21 (a total of 18) is evenly arranged along the inner circle, and the other group of the high-power LEDs 21 (a total of 18) is evenly arranged along the outer circle. The purpose of the above arrangement structure is to avoid the relatively concentrated heat generated by the operation of the high-power LEDs 21.

[0017] Preferably, the high-power LEDs 21 have high luminous efficiency, and the color meets the requirements of the national military standard aviation white, and has good penetration in rainy and foggy weather.

[0018] Among them, the high-power LED 21 is at the focal position of the corresponding reflecting bowl 22. The reflecting surface of the reflecting bowl 22 is a free-form surface. According to the light energy distribution characteristics of the high-power LED 21, the free-form surface is designed by controlling the light path. The free-form surface is configured such that the light emitted by the high-power LED 21 with its own emission angle in the range of 0° - 25° (excluding the endpoints of 25°) is directly emitted outwards without passing through the reflecting bowl 22; the light emitted by the high-power LED 21 with its own emission angle in the range of 25° - 90° (including the endpoint of 25°) passes through the reflecting bowl 22 and is emitted outwards. Please refer to Figure 4 , use the optical simulation software SPEOS to verify the simulation results of the optical structure. The beam loss of the optical structure outside the required scattering angle range is extremely small, and more than about 95% of the beam falls within the effective scattering angle range, with high optical utilization rate, continuous light pattern distribution, no brightness gradient change, and fullness, and the overall light distribution is good.

[0019] The heat dissipation fins 3 are outside the lamp housing 1. The heat dissipation fins 3 are fixed on the bottom wall of the housing of the lamp housing 1. The heat dissipation fins 3 are used to help the circular light source board 2 dissipate heat.

[0020] The above only expresses the embodiments of the present invention, and its description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. An aircraft rescue lighting optical structure, characterized in that, Comprising: A light source board, the light source board having high-power LEDs and reflecting bowls corresponding to the high-power LEDs, the high-power LEDs being at the focal positions of their corresponding reflecting bowls, and the reflecting surfaces of the reflecting bowls being free-form surfaces.

2. The aircraft rescue lighting optical structure according to claim 1, characterized in that, The free-form surface is configured such that the light emitted by the high-power LEDs within an angle range of 0° - 25° (excluding the endpoints of 25°) of their own light-emitting angles is directly emitted outward without passing through the reflecting bowls, and the light emitted by the high-power LEDs within an angle range of 25° - 90° (including the endpoint of 25°) of their own light-emitting angles is emitted outward through the reflecting bowls.

3. The aircraft rescue lighting optical structure according to claim 1 or 2, characterized in that, The high-power LEDs are divided into two groups, with one group of the high-power LEDs being evenly arranged along the inner circle and the other group of the high-power LEDs being evenly arranged along the outer circle.

4. The aircraft rescue lighting optical structure according to claim 1, characterized in that, Further comprising: A lamp housing, the circular light source board being inside the lamp housing, and the circular light source board being fixed to the bottom wall of the lamp housing.

5. The aircraft rescue lighting optical structure according to claim 4, characterized in that Still further comprising: heat dissipation fins, the heat dissipation fins being outside the lamp housing, and the heat dissipation fins being fixed to the bottom wall of the lamp housing.

Images