Novel wingtip combined navigation lamp for unmanned aerial vehicle

Abstract

The novel wingtip combined navigation lamp for the unmanned aerial vehicle comprises navigation lamp bodies, the navigation lamp bodies are arranged on a left wing and a right wing of the unmanned aerial vehicle correspondingly, each navigation lamp body comprises a lampshade, pressing plates, a shell, a printed board assembly, a cover plate, an electric connector and a light source assembly, the lampshade covers the shell, the pressing plates are arranged above the two ends of the lampshade, and the pressing plates are arranged above the two ends of the lampshade. The lampshade is fixed to the shell through the pressing force of the pressing plate in the vertical direction, the prism structure and the bead face structure are arranged on the surface of the lampshade, and the lampshade, the prism and the bead face are integrally machined, so that integrated design of the lampshade, the prism and the bead face is achieved, compared with the prior art, spatial light distribution better meets the corresponding index requirement, and the light quality is improved. The device has the advantages of being small in size, light in weight, compact in structure and beneficial to small-size integration of products, and technical support is provided for precise light distribution of the combined navigation lamp of the unmanned aerial vehicle.

Description

Technical Field

[0001] The invention relates to the technical field of external lighting for aviation aircraft, and in particular to a novel wingtip combined navigation light for unmanned aerial vehicles. Background Art

[0002] The combined navigation light system is a type of external lighting system. In the field of military reconnaissance, combined navigation lights are widely used on UAVs. When flying at night or in poor visibility, they can provide other pilots with visual information about the aircraft's attitude and position. At the same time, they can also provide signals such as the aircraft's outline and flight direction to the ground and other aircraft to avoid collisions between aircraft. Most combined navigation lights are located at the left and right wingtips, and work with anti-collision lights. For this reason, all types of UAVs use combined navigation lights as a standard feature. However, unlike large aircraft, due to the model and size limitations of UAVs, the size and weight requirements for combined navigation lights are quite strict. Generally, the size (length, width, height) is required to be no larger than 97mm×21mm×45mm, and the weight should not exceed 100g.

[0003] At present, the mainstream combination navigation lights are mainly based on LED lighting technology. The main ways to achieve combination navigation light lighting generally include natural light distribution design achieved by using structure and LED Lambertian distribution and secondary light distribution using parabolic reflector cups. However, the above two structures cannot meet the requirements for weight and volume of combination navigation lights, and cannot meet the needs of drones. Therefore, in order to meet the lighting needs of drone models with a volume (length, width, height) not exceeding 97mm×21mm×45mm and a weight not exceeding 100g, a new type of wingtip combination navigation light for drones is urgently needed to solve the above problems. Summary of the invention

[0004] In view of this, the present invention proposes a new type of wingtip combined navigation light for UAV, which is applied to the field of aviation external lighting technology to solve the technical problems of existing combined navigation lights such as large size, high power consumption, poor lighting effect and inability to meet the lighting needs of UAV models.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A novel wingtip combined navigation light for unmanned aerial vehicles comprises a navigation light body, which is respectively arranged on the left wing and the right wing of the unmanned aerial vehicle. The navigation light body comprises a lampshade, a pressure plate, a shell, a printed circuit board assembly, a cover plate, an electrical connector and a light source assembly. The lampshade covers the top of the shell, and the pressure plate is arranged above the two ends of the lampshade. The lampshade is fixed to the shell by the vertical pressing force of the pressure plate. The surface of the lampshade is provided with a prism structure and a bead surface structure, and the lampshade, prism and bead surface are made by one-piece processing; the prism structure changes the propagation direction of part of the light, so that the light intensity at 0 degrees is increased, and the bead surface structure makes the light evenly distributed to avoid uneven light distribution. The lampshade is both an optical light distribution element and can protect the light source. The light is evenly distributed through the lampshade, which solves the problems of glare and weak or even insufficient light intensity at 0 degrees in the technology of combined navigation lights, makes the combined navigation light performance uniform, reduces the cost of the combined navigation lights, and overcomes the problems that the existing combined navigation lights occupy a large space, the spatial light distribution cannot fully meet the existing requirements and there is glare.

[0007] The light source assembly includes a forward navigation light friendly mode light source and a rearward navigation light friendly mode light source. A front bevel and a rear bevel located inside the lampshade are provided on the shell. The forward navigation light friendly mode light source is provided on the front bevel, and an angle of 125° is formed between the front bevel and the horizontal plane of the shell. Under the refraction of the lampshade, the light emitted by the forward navigation light friendly mode light source is distributed at 0 to 110° above the shell. The rearward navigation light friendly mode light source is provided on the rear bevel, and an angle of 115° is formed between the rear bevel and the horizontal plane of the shell. Under the refraction of the lampshade, the light emitted by the rearward navigation light friendly mode light source is distributed at 110 to 180° above the shell.

[0008] Furthermore, the friendly mode light source of the forward navigation light includes a group of LED lights consisting of six red LED lights or six green LED lights, and the friendly mode light source of the rearward navigation light includes a group of LED lights consisting of four white LEDs.

[0009] Furthermore, the light source assembly and the printed circuit board assembly are mounted on the housing and located inside the lampshade, and the printed circuit board assembly and the light source assembly are connected by electrical signals via a connecting line.

[0010] Furthermore, the cover is fixedly connected to one end of the shell away from the lampshade, the printed circuit board assembly is arranged between the shell and the cover, and the electrical connector is arranged at the outer end of the cover. The electrical connector is connected to the light source assembly and the inside of the printed circuit board assembly through connecting wires for electrical signal connection.

[0011] Furthermore, the prism structure on the lampshade is achieved by using MATLAB software to complete the precise light distribution based on the free curve of the surface light source, and the prism curve is accurately calculated, so that the curve is stretched and rotated to obtain a secondary light distribution prism. The bead surface structure on the lampshade is achieved by using the precise debugging of the 3D texture of the LightTools software and the simulation of the LightTools optical software to obtain the optimal secondary light distribution bead surface.

[0012] Furthermore, the contact surfaces between the lampshade and the pressure plate and the contact surfaces between the lampshade and the shell are respectively coated with sealant HM119B2 to achieve sealing and shock absorption. The lampshade is made of plexiglass, the outer surface of the lampshade is coated with an anti-aging film, and the prism structure and the bead surface structure are located on the inner surface of the lampshade.

[0013] Furthermore, the pressure plate has the same shape as the left and right wings of the drone. Both ends of the pressure plate are fixed to the shell by fastening plates. The pressure plate fits tightly with the shell under the pressure of the fastening plates, which is beneficial to product drainage and effectively prevents corrosion on the metal surface caused by long-term water accumulation. Positioning columns are provided at the contact positions between the two ends of the shell and the pressure plate to ensure that the shell and the pressure plate are flush in appearance. The dimensions of the combined navigation lights are ensured by controlling the size and size of the shell and the pressure plate. The screw mounting holes on the cover are filled with sealant HM119B2.

[0014] Furthermore, the shell, cover plate and pressure plate are all made of aluminum alloy material, and the outer surfaces of the shell, cover plate and pressure plate are provided with corrosion-resistant coating layers. The printed circuit board assembly serves as the main heat-generating component, and the cover plate and the shell serve as the two-way path for its heat conduction, which reduces the operating temperature of the printed circuit board assembly and improves the reliability and lighting efficiency of the product.

[0015] Furthermore, the contact surfaces between the cover plate and the shell, and between the printed circuit board assembly and the shell are uniformly coated with thermal conductive silicone grease.

[0016] Furthermore, the total height of the lampshade does not exceed 14 mm.

[0017] The present invention has the following beneficial effects:

[0018] 1. The new type of wingtip combined navigation light for UAV mentioned in the present invention uses a forward navigation light source and a backward navigation light source as light source components, and can use fewer LED lights with more scientific spatial light distribution, smaller size and lighter weight for combined navigation lighting, which provides the necessary conditions for accurate light distribution of the wingtip combined navigation light of the UAV, and improves the aerodynamic shape of the aircraft and improves the weather resistance of the product through the cooperation of the pressure plate and the lampshade, and has the advantages of small size, light weight, compact structure and is conducive to small-scale integration of products.

[0019] 2. The present invention mentions a new type of wingtip combined navigation light for unmanned aerial vehicles. A prism structure and a beaded surface structure are arranged on the inner surface of the lampshade, and the lampshade, prism and beaded surface are made by integrated processing. The prism structure changes the propagation direction of part of the light, so that the light intensity at 0 degrees is increased. The beaded surface structure makes the light evenly distributed to avoid uneven light distribution. The lampshade is both an optical light distribution element and can protect the light source. The light is evenly distributed through the lampshade, which solves the problems of glare and weak or even insufficient light intensity at 0 degrees in the technology of combined navigation lights, makes the performance of the combined navigation lights uniform, and reduces the cost of the combined navigation lights. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the structure of a novel wingtip combined navigation light for a UAV provided by the present invention;

[0022] Figure 2 It is a structural schematic diagram of the lampshade in the present invention;

[0023] Figure 3 It is a structural schematic diagram of the printed circuit board assembly in the present invention;

[0024] Figure 4 It is a schematic diagram of the connection structure between the pressure plate and the housing in the present invention;

[0025] Figure 5 The light distribution diagram of the combined navigation light in the horizontal plane of the present invention;

[0026] Figure 6 This is the light distribution diagram in the vertical plane of the combined navigation light in the present invention.

[0027] Among them: 1. lampshade; 2. pressure plate; 3. shell; 4. printed circuit board assembly; 5. cover plate; 6. electrical connector; 7. light source assembly. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0029] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0030] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present invention, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0031] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention. The drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0032] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects described may be practiced without these specific details.

[0033] Example 1

[0034] like Figures 1 to 6As shown, a novel wingtip combined navigation light for unmanned aerial vehicles includes a navigation light body, which is respectively arranged on the left wing and the right wing of the unmanned aerial vehicle. The navigation light body includes a lampshade 1, a pressing plate 2, a shell 3, a printed circuit board assembly 4, a cover plate 5, an electrical connector 6 and a light source assembly 7. The lampshade 1 covers the shell 3, and the pressing plate 2 is arranged above the two ends of the lampshade 1. The lampshade 1 is fixed to the shell 3 by the vertical pressing force of the pressing plate 2. The surface of the lampshade 1 is provided with a prism structure and a bead surface structure. The lampshade 1, the prism and the bead surface are processed in an integrated manner. The prism structure changes the propagation direction of part of the light, so that the light intensity at 0 degrees is increased, and the bead surface structure makes the light evenly distributed to avoid uneven light distribution. The lampshade 1 is both an optical light distribution element and can protect the light source. The light is evenly distributed through the lampshade 1, which solves the problems of glare and weak or even insufficient light intensity at 0 degrees in the technology of combined navigation lights, makes the performance of the combined navigation lights uniform, reduces the cost of the combined navigation lights, and overcomes the problems of the existing combined navigation lights occupying a large space, the spatial light distribution cannot fully meet the existing requirements, and the existence of glare.

[0035] The light source assembly 7 and the printed circuit board assembly 4 are mounted on the housing 3 and are located inside the lampshade 1. The printed circuit board assembly 4 and the light source assembly 7 are connected to each other through a connecting wire. The cover plate 5 is fixedly connected to the end of the housing 3 away from the lampshade 1. The printed circuit board assembly 4 is arranged between the housing 3 and the cover plate 5. The electrical connector 6 is arranged at the outer end of the cover plate 5. The electrical connector 6 is connected to the light source assembly 7 and the inside of the printed circuit board assembly 4 through connecting wires.

[0036] The printed circuit board assembly 4 has lightning protection and reverse connection protection functions. A rectifier diode is set in the internal circuit. The function of the rectifier diode is unidirectional conductivity to ensure that the current can only flow from the positive electrode to the negative electrode. A transient voltage suppression diode is set in the internal circuit to increase the product's ability to withstand lightning.

[0037] The light source assembly 7 includes a forward navigation light friendly mode light source and a rearward navigation light friendly mode light source. The shell 3 is provided with a front bevel and a rear bevel located inside the lampshade 1. The forward navigation light friendly mode light source is arranged on the front bevel, and the front bevel and the horizontal plane of the shell 3 form an angle of 125°. Under the refraction of the lampshade 1, the light emitted by the forward navigation light friendly mode light source is distributed at 0 to 110° above the shell 3. The rearward navigation light friendly mode light source is arranged on the rear bevel, and the rear bevel and the horizontal plane of the shell 3 form an angle of 115°. Under the refraction of the lampshade 1, the light emitted by the rearward navigation light friendly mode light source is distributed at 110 to 180° above the shell 3. The total height of the lampshade 1 does not exceed 14 mm.

[0038] The friendly mode light source of the forward navigation light includes a group of LED lights consisting of six red LED lights, and the friendly mode light source of the rearward navigation light includes a group of LED lights consisting of four white LEDs.

[0039] The prism structure on the lampshade 1 is achieved by using MATLAB software to complete the precise light distribution based on the free curve of the surface light source, and the prism curve is accurately calculated, so that the curve is stretched and rotated to obtain a secondary light distribution prism. The bead surface structure on the lampshade 1 is achieved by using the precise debugging of the 3D texture of the LightTools software and the simulation of the LightTools optical software to obtain the optimal secondary light distribution bead surface, so that the light passing through the lampshade 1 is uniform.

[0040] The contact surfaces between the lampshade 1 and the pressure plate 2 and the contact surfaces between the lampshade 1 and the shell 3 are respectively coated with sealant HM119B2 to achieve sealing and shock absorption. The material of the lampshade 1 is plexiglass PC, and the outer surface of the lampshade 1 is coated with an anti-aging film. The prism structure and the bead surface structure are located on the inner surface of the lampshade 1, thereby facilitating the integrated design of the lampshade 1, the prism and the bead surface.

[0041] The pressure plate 2 has the same shape as the left and right wings of the drone. Both ends of the pressure plate 2 are fixed to the shell 3 by fastening plates. The pressure plate 2 fits tightly with the shell 3 under the pressure of the fastening plates, which is beneficial to product drainage and effectively prevents corrosion of the metal surface caused by long-term water accumulation. Positioning columns are provided at the contact positions between the two ends of the shell 3 and the pressure plate 2 to ensure that the shell 3 and the pressure plate 2 are flush in appearance. The dimensions of the combined navigation light are ensured by controlling the size and size of the shell 3 and the pressure plate 2. The screw mounting holes on the cover 5 are filled with sealant HM119B2.

[0042] The shell 3, cover plate 5 and pressure plate 2 are all made of aluminum alloy. The outer surfaces of the shell 3, cover plate 5 and pressure plate 2 are all coated with weather-resistant polyurethane enamel and anti-corrosion epoxy primer, and the thickness of the paint layer is about 80um. The printed circuit board assembly 4 is the main heat-generating component, and the cover plate 5 and the shell 3 are the two-way paths for its heat conduction, which reduces the working temperature of the printed circuit board assembly 4 and improves the reliability and light efficiency of the product. The contact surface between the cover plate 5 and the shell 3 and the printed circuit board assembly 4 and the shell 3 is evenly coated with thermal conductive silicone grease. The shell 3 is fixed to the body of the drone by screws during use.

[0043] In summary, the present invention realizes an integrated design of lampshade, prism and bead surface. Compared with the prior art, the spatial light distribution is more in line with the corresponding index requirements. It has the advantages of small size, light weight, compact structure and is conducive to small-scale integration of products, providing technical support for the precise light distribution of UAV combined navigation lights.

[0044] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A new type of wingtip combined navigation light for unmanned aerial vehicles, comprising a navigation light body, wherein the navigation light body is respectively arranged on the left wing and the right wing of the unmanned aerial vehicle, and is characterized in that: The navigation light body comprises a lampshade (1), a pressure plate (2), a shell (3), a printed circuit board assembly (4), a cover plate (5), an electrical connector (6) and a light source assembly (7); the lampshade (1) covers the shell (3); the pressure plate (2) is arranged above the two ends of the lampshade (1); the lampshade (1) is fixed to the shell (3) by the vertical pressing force of the pressure plate (2); the surface of the lampshade (1) is provided with a prism structure and a bead surface structure; the lampshade (1), the prism and the bead surface are manufactured by integrated processing; the light source assembly (7) comprises a forward navigation light friendly mode light source and a rearward navigation light friendly mode light source; the shell (3) is provided with a prism structure and a bead surface structure; the prism structure and the bead surface are manufactured by integrated processing; the light source assembly (7) comprises a forward navigation light friendly mode light source and a rearward navigation light friendly mode light source; The body (3) is provided with a front bevel and a rear bevel located inside the lampshade (1); the forward navigation light friendly mode light source is arranged on the front bevel, and the front bevel and the horizontal plane of the shell (3) form an angle of 125°, so that the light emitted by the forward navigation light friendly mode light source is distributed at 0 to 110° above the shell (3) under the refraction of the lampshade (1); the rear navigation light friendly mode light source is arranged on the rear bevel, and the rear bevel and the horizontal plane of the shell (3) form an angle of 115°, so that the light emitted by the rear navigation light friendly mode light source is distributed at 110 to 180° above the shell (3) under the refraction of the lampshade (1).

2. The novel wingtip combined navigation light for UAV according to claim 1 is characterized by: The friendly mode light source of the forward navigation light includes a group of LED lights, which are composed of six red LED lights or six green LED lights, and the friendly mode light source of the rearward navigation light includes a group of LED lights, which are composed of four white LEDs.

3. The novel wing tip combined navigation light for UAV according to claim 2 is characterized by: The light source assembly (7) and the printed circuit board assembly (4) are mounted on the housing (3) and are located inside the lampshade (1); the printed circuit board assembly (4) and the light source assembly (7) are connected by electrical signals via a connecting wire.

4. The novel wingtip combined navigation light for UAV according to claim 3 is characterized by: The cover plate (5) is fixedly connected to an end of the shell (3) away from the lampshade (1); the printed circuit board assembly (4) is arranged between the shell (3) and the cover plate (5); the electrical connector (6) is arranged at the outer end of the cover plate (5); and the electrical connector (6) is connected to the light source assembly (7) and the inside of the printed circuit board assembly (4) through connecting wires for electrical signal connection.

5. The novel wing tip combined navigation light for UAV according to claim 4 is characterized by: The prism structure on the lampshade (1) is achieved by using MATLAB software to achieve precise light distribution based on the free curve of the surface light source, and the prism curve is accurately calculated, so that the curve is stretched, rotated and combined to obtain a secondary light distribution prism. The bead surface structure on the lampshade (1) is achieved by using LightTools software 3D texture precise debugging, and through LightTools optical software simulation, the optimal secondary light distribution bead surface is obtained.

6. The novel wing tip combined navigation light for UAV according to claim 5 is characterized by: The contact surfaces between the lampshade (1) and the pressure plate (2) and the contact surfaces between the lampshade (1) and the housing (3) are respectively coated with sealant HM119B2 to achieve sealing and shock absorption. The lampshade (1) is made of organic glass, and the outer surface of the lampshade (1) is coated with an anti-aging film. The prism structure and the bead surface structure are located on the inner surface of the lampshade (1).

7. The novel wing tip combined navigation light for UAV according to claim 6 is characterized by: The pressure plate (2) has the same shape as the left wing and the right wing of the drone. The two ends of the pressure plate (2) are fixed to the shell (3) by means of a fastening plate. The pressure plate (2) fits tightly with the shell (3) under the pressure of the fastening plate. Positioning columns are provided at the contact positions between the two ends of the shell (3) and the pressure plate (2) to ensure that the shell (3) and the pressure plate (2) are flush in appearance.

8. The novel wing tip combined navigation light for UAV according to claim 7 is characterized by: The shell (3), the cover plate (5) and the pressing plate (2) are all made of aluminum alloy material, and the outer surfaces of the shell (3), the cover plate (5) and the pressing plate (2) are all provided with a corrosion-resistant coating layer.

9. The novel wingtip combined navigation light for UAV according to claim 8 is characterized by: The contact surfaces between the cover plate (5) and the shell (3) and between the printed circuit board assembly (4) and the shell (3) are evenly coated with thermal conductive silicone grease.

10. The novel wing tip combined navigation light for UAV according to claim 9 is characterized in that: The total height of the lampshade (1) does not exceed 14 mm.

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