CN115962442A

CN115962442A - LED landing lamp module and landing lamp optical system

Info

Publication number: CN115962442A
Application number: CN202111177375.1A
Authority: CN
Inventors: 郭长伟; 朱锦超; 胡初强; 胡康辉; 张涛
Original assignee: Shanghai Aviation Electric Co Ltd
Current assignee: Shanghai Aviation Electric Co Ltd
Priority date: 2021-10-09
Filing date: 2021-10-09
Publication date: 2023-04-14

Abstract

The invention discloses an LED landing lamp module and a landing lamp optical system. The LED landing lamp module consists of a TIR lens and an LED light source. The TIR lens is a rotationally symmetric body with a bowl-like structure. The bottom surface of the TIR lens is provided with an upward concave pit part. The top surface of the concave pit part is configured into a convex transparent surface protruding downwards. The inner peripheral surface of the pit part is a refraction surface of the lens. The peripheral surface of the TIR lens is a total reflection surface of the lens. The top surface of the TIR lens is a light-emitting surface of the lens. The top surface of the TIR lens is provided with four light edges arranged in a matrix. The light edges of the two light edge parts in the same row are opposite in direction. The light edge directions of the two light edge parts in the same column are the same. The LED light source is arranged at the bottom of the pit part. The invention has the advantages of reducing light energy loss, lowering production cost and realizing modular design without excessive optical accessories.

Description

LED landing lamp module and landing lamp optical system

Technical Field

The present invention relates to aircraft lighting systems, and in particular, to LED landing light modules and landing light optical systems.

Background

With the advancement of science and technology, various military and civil aircrafts are updated, the requirement for ensuring the safety of aircraft personnel is continuously improved, particularly during the takeoff and landing of the aircrafts, in order to help pilots to better see runways and surrounding obstacles, the scattering angle of an illumination product matched with the aircrafts needs to be enlarged as much as possible on the premise of meeting the function, and the pilots have larger visual fields so as to reduce accidents during the takeoff and landing.

The light emitting of the LED chip is distributed in a Lambertian manner, and the LED chip is directly applied to products and hardly reaches the optical performance index, so that the secondary optical design of the LED light source is particularly important, the illumination requirement is realized by reasonably redistributing the light of the LED light source, and powerful guarantee can be provided for better application of the LED to various fields. The landing lamp has high requirement on central light intensity and also meets the requirement on scattering angle, so that an LED landing lamp lens can be designed, and the horizontal and vertical scattering angles of the landing lamp are further enlarged while the landing lamp meets the existing standard requirement.

Disclosure of Invention

The invention aims to solve the technical problems in the prior art and provides a novel LED landing lamp module and a novel landing lamp optical system.

In order to achieve the purpose, the technical scheme of the invention is as follows: the LED landing light module comprises a TIR lens and an LED, wherein the TIR lens is a rotational symmetric body with a bowl-shaped structure, an upwards-concave pit part is formed on the bottom surface of the TIR lens, a downwards-convex transparent surface is configured on the top surface of the pit part, the inner peripheral surface of the pit part is a refractive surface of the lens, the outer peripheral surface of the TIR lens is a total reflection surface of the lens, the top surface of the TIR lens is a light emitting surface of the lens, four light edge parts which are arranged according to a matrix are formed on the top surface of the TIR lens, the light edge directions of the two light edge parts in the same row are opposite, the light edge directions of the two light edge parts in the same column are the same, and the LED light source is arranged at the bottom of the pit part.

As a preferable scheme of the LED landing lamp module, the concave part is in a cylindrical or truncated cone-shaped structure.

The invention also provides a landing lamp optical system which is provided with 1 lampshade and at least 1 LED landing lamp module.

As a preferable scheme of the LED landing light module, the landing light optical system employs 9 LED landing light modules, and the LED landing light modules are arranged in a matrix manner in 3 rows and 3 columns.

As a preferable scheme of the LED landing light module, a lampshade light edge portion is formed on the top surface of the lampshade, and the lampshade light edge portion is used for determining a light exit angle of the landing light optical system.

Compared with the prior art, the invention has the beneficial effects that: excessive optical accessories are not needed, the light energy loss is reduced, the production cost is reduced, and the modular design is realized.

Drawings

FIG. 1 is a top view of the LED landing light module of the present invention.

FIG. 2 is a front view of the LED landing light module of the present invention.

Fig. 3 is a schematic view (front view direction) illustrating a usage state of the LED landing light module according to the present invention.

FIG. 4 is a schematic diagram (side view) showing the usage status of the LED landing light module of the present invention.

Fig. 5 is a schematic structural view of the glide lamp optical system of the present invention.

Fig. 6 is a schematic structural diagram of a lamp cover in the optical system of the slide lamp according to the present invention.

Detailed Description

The invention will be described in further detail below with reference to specific embodiments and drawings. Here, the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Referring to fig. 1-4, an LED landing light module is shown.

The LED landing lamp module consists of a TIR lens 1 and an LED light source 3.

The TIR lens 1 is a rotationally symmetric body with a bowl-like structure. The bottom surface of the TIR lens 1 is formed with a cylindrical or truncated cone-shaped concave part 11 which is concave upwards. The top surface of the concave portion 11 is configured as a convex transparent surface 110 protruding downward. The inner peripheral surface of the concave part 11 is a refraction surface of the lens. The peripheral surface of the TIR lens 1 is a total reflection surface of the lens. The top surface of the TIR lens 1 is a light-emitting surface of the lens.

The TIR lens 1 is formed with four light prisms 2 arranged in a matrix on its top surface. The two light edges in the same row have opposite light edge directions, and the two light edges 2 in the same row limit the horizontal scattering angle α. The two light prism portions 2 in the same column have the same light prism direction, and the two light prism portions 2 in the same column limit the vertical scattering angle β. In the present embodiment, the horizontal scattering angle α is 16 ° and the vertical scattering angle β is 10 °.

The LED light source 3 is arranged at the bottom of the concave part 11.

Referring to fig. 5-6, a landing light optical system is shown. The landing lamp optical system is provided with 1 lampshade 4 and at least 1 LED landing lamp module. And determining the actual number of the LED landing lamp modules according to the total luminous flux required to be provided by the landing lamp optical system. The higher the required light performance requirement of the landing light optical system is, the more the actual number of the LED landing light modules is. In this embodiment, the landing light optical system uses 9 LED landing light modules in total, and the LED landing light modules are arranged in a matrix manner in 3 rows and 3 columns. It should be noted that the arrangement may be adjusted according to the structural shape difference of the landing light optical system, and is not limited to this. The shade 4 is formed with a shade light edge portion 5. The lampshade light edge part 5 is used for determining the light-emitting angle of the landing light optical system. According to snell's law, the light-emitting angle of the lamp shade light edge part 5 to the land lamp optical system can be designed and optimized to meet the required landing attitude angle.

The foregoing merely represents embodiments of the invention, which are described in some detail and detail, and therefore should not be construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

The LED landing light module is characterized by comprising a TIR lens and an LED light source, wherein the TIR lens is a rotational symmetric body with a bowl-shaped structure, an upwardly concave pit part is formed in the bottom surface of the TIR lens, the top surface of the pit part is configured into a downwardly convex transparent surface, the inner peripheral surface of the pit part is a refraction surface of the lens, the outer peripheral surface of the TIR lens is a total reflection surface of the lens, the top surface of the TIR lens is a light emitting surface of the lens, four light edge parts which are arranged according to a matrix are formed on the top surface of the TIR lens, the directions of the light edges of the two light edge parts in the same row are opposite, the directions of the light edges of the two light edge parts in the same column are the same, and the LED light source is arranged at the bottom of the pit part.
2. The LED landing light module of claim 1, wherein the dimple is a cylindrical or truncated cone shaped structure.
3. The LED landing light module of claim 1, wherein the LED light source is coplanar with the TIR lens bottom surface.
4. Landing light optical system, characterized in that it has 1 lampshade and at least 1 LED landing light module of any one of claims 1 to 3.
5. The landing light optical system of claim 4, wherein the landing light optical system employs 9 LED landing light modules and is arranged in a matrix of 3 rows and 3 columns.
6. The landing light optical system according to claim 4, wherein the top surface of the lamp cover is formed with a lamp cover light edge portion for determining a light exit angle of the landing light optical system.