Landing lamp

Abstract

The invention relates to the technical field of lighting devices, and discloses a landing lamp which comprises a mounting frame, a lamp body, a rotating ring, a first driving mechanism and a second driving mechanism, the rotating ring is arranged at one end of the mounting frame and can rotate around the Z axis, and the two sides of the lamp body are hinged to the rotating ring; the first driving mechanism is connected with the rear side of the lamp body and the other end of the mounting frame, and is used for driving the lamp body to rotate around a hinge point of the lamp body along a Y axis so as to realize pitch angle adjustment of the lamp body; the second driving mechanism is connected with the rotating ring and the other end of the mounting frame and used for driving the rotating ring to rotate around the Z axis so as to drive the lamp body to achieve adjustment of the roll angle. Adjustment can be automatically carried out according to the pitch angle or the deflection angle of an airplane, the lamp body is always located at the optimal pitch angle and the optimal deflection angle, it can be guaranteed that the landing lamp meets the efficient illumination requirement in the two landing states at the same time, lamp beads do not need to be added, cost is reduced, and the performance of the landing lamp is guaranteed.

Description

Technical Field

[0001] The present application relates to a lighting device, and in particular to a landing light. Background Art

[0002] According to the requirements of the aircraft for landing lights, the landing lights have clear light performance requirements in the main landing gear touchdown phase (Phase A) and the steady taxiing phase (Phase B). In Phase A, the illuminance value at the ground 120 meters in front of the pilot cannot be less than 21.6Lx (lux); in Phase B, the illuminance value at the ground 90 meters in front of the pilot cannot be less than 5.9Lx. The existing landing lights are divided into halogen landing lights and LED landing lights, which are generally installed at a fixed angle of attack, where the installation angle of attack depends on the angle of attack of the aircraft when landing.

[0003] However, in actual use, the pitch angle of the aircraft will change during landing, which has a great impact on the actual lighting distance. At the same time, the A and B states during landing are essentially contradictory. When installed at a fixed angle, the A and B states cannot achieve the best lighting effect at the same time. Therefore, in order to meet the A and B states at the same time, the performance of the landing light is generally much higher than the requirements. The conventional practice is to increase the number of lamp beads. However, the general supply voltage of the onboard power supply module is 14V or 28V. When increasing the number of lamp beads to increase power, it can only be achieved by increasing the current. This will not only cause the heat to increase exponentially, affecting the heat dissipation and service life of the structure, but also limit the maximum number of lamp beads. Therefore, simply increasing the number of lamp beads cannot meet the needs. In addition, some existing landing light lighting systems also adjust the installation angle to meet the illumination requirements of the A and B states of the landing lights when landing for models with different landing pitch angles, but the installation is complicated. Summary of the invention

[0004] In order to solve the above technical problems, the present application provides a landing light to ensure that the landing light meets the requirements of efficient lighting in both the main landing gear touchdown phase and the stable taxiing phase, while reducing costs, avoiding affecting heat dissipation, and ensuring the performance of the landing light.

[0005] The technical solution adopted by this application to solve its technical problem is: A landing light comprises a mounting frame, a lamp body, a rotating ring, a first driving mechanism and a second driving mechanism, wherein the rotating ring is rotatably arranged at one end of the mounting frame around a Z axis, and both sides of the lamp body are hinged to the rotating ring; the first driving mechanism is connected to the rear side of the lamp body and the other end of the mounting frame, and is used to drive the lamp body to rotate around its hinge point along the Y axis to achieve pitch angle adjustment of the lamp body; the second driving mechanism is connected to the rotating ring and the other end of the mounting frame, and is used to drive the rotating ring to rotate around the Z axis to drive the lamp body to achieve roll angle adjustment.

[0006] Preferably, the first driving mechanism comprises a telescopic rod, two ends of the telescopic rod are respectively a driving end and a connecting end, the connecting end is connected to the mounting frame, and the driving end is hinged to the lamp body.

[0007] Preferably, the center of the end surface of the driving end is located above or below the center of the rear side of the lamp body, and a vertical line passing through the center of the rear side of the lamp body intersects with the axis of the telescopic rod; The rear side of the lamp body is circular, and its radius is R. The distance between the center of the end surface of the driving end and the center of the rear side of the lamp body in the vertical direction is L, and L=(0.3~0.6)R.

[0008] Preferably, the lamp body includes a cover body and a shell made of metal material, the shell is bowl-shaped, has an opening, and includes a shell body and a bottom plate, the cover body is arranged on the shell to cover the opening, a light source is provided inside the shell corresponding to the cover body, the first driving mechanism is connected to the bottom plate, and heat sink assemblies are symmetrically provided on both sides of the first driving mechanism on the bottom plate.

[0009] Preferably, the radiator assembly comprises a plurality of radiating fins spaced apart and arranged in parallel, the radiating fins are made of the same material as the shell, the thickness of the radiating fins is h, the spacing between two adjacent radiating fins is s, s=(5~6)h, and the value range of h is 1~2mm.

[0010] Preferably, the area of ​​the bottom plate is S1, the sum of the surface areas of the plurality of heat sinks is S2, and S2=(8-12)S1.

[0011] Preferably, the luminous flux of the light source is F v , the cover is made of flame-retardant polycarbonate, and its thickness is a, and the area of ​​the surface of the cover close to the shell is S, then they satisfy: F v *0.95 0.5a *0.9*0.65≥21.6 S; Here, a is an integer multiple of 2.

[0012] Preferably, a base is provided on the inner wall of the shell, a printed circuit board is provided on the base, the light source is connected to the printed circuit board, thermal conductive silica gel is provided between the base and the printed circuit board, and a thermal conductive graphite sheet is provided between the base and the shell.

[0013] Preferably, the light source comprises a plurality of lenses arranged on the printed circuit board and a plurality of lamp beads arranged one-to-one corresponding to the lenses, a light receiving groove is provided at one end of the lens connected to the printed circuit board, and the lamp beads are connected to the printed circuit board and arranged inside the light receiving groove; The bottom wall of the light collecting groove is the first refractive surface, the side wall of the light collecting groove is the second refractive surface, the other end of the lens is the light emitting surface, the side wall of the lens is the total reflection surface, the first refractive surface and the second refractive surface intersect at the first circular ring, the line connecting the center of the lamp bead and any point of the first circular ring is the middle line, the angle between the middle line and the axis of the lens is c, and the value range of c is 20~26°.

[0014] Preferably, rotating plates are respectively provided on both sides of the lamp body, hinge holes are provided on the rotating plates, two hinge frames are relatively provided on the inner wall of the rotating ring, the two hinge frames are arranged one-to-one corresponding to the two rotating plates, and a hinge shaft is provided on the hinge frame, which is connected to the hinge hole.

[0015] Compared with the prior art, a landing light in an embodiment of the present application has the following beneficial effects: a rotating ring is rotatably arranged at one end of a mounting frame around a Z axis, and two sides of a lamp body are hinged to the rotating ring. At the same time, a first driving mechanism is connected to the rear side of the lamp body and the other end of the mounting frame to drive the lamp body to rotate around its hinge point along the Y axis to achieve pitch angle adjustment of the lamp body; a second driving mechanism is connected to the rotating ring and the other end of the mounting frame to drive the rotating ring to rotate around the Z axis to drive the lamp body to achieve roll angle adjustment, so that during the landing of the aircraft, the lamp body can be automatically adjusted according to the pitch angle or yaw angle of the aircraft to ensure that the lamp body is always at the optimal pitch angle and yaw angle, which can not only ensure that the landing light meets the requirements of efficient lighting in both the landing state of the main landing gear touching the ground and the stable taxiing stage, but also does not need to increase lamp beads, thereby reducing costs, avoiding affecting heat dissipation, and ensuring the performance of the landing light. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an axonometric view of the landing light of the present application.

[0017] Figure 2 This is a schematic diagram of the structure of the landing light of this application.

[0018] Figure 3 This is an exploded view of the lamp body of this application.

[0019] Figure 4 This is a schematic diagram of the structure of the heat sink of the present application.

[0020] Figure 5 This is a schematic diagram of the structure of the light source of this application.

[0021] Wherein: 1-mounting frame, 11-cross bar, 12-longitudinal bar, 13-rotating shaft; 2-lamp body, 21-cover body, 22-shell, 23-light source, 231-lamp bead, 232-lens, 2321-light receiving groove, 2322-first refractive surface, 2323-second refractive surface, 2324-light emitting surface, 2325-total reflection surface, 2326-middle line, 24-base, 25-printed board, 26-thermal conductive silica gel, 27-graphite sheet, 28-rotating plate; 3-rotating ring, 31-articulated frame, 32-articulated shaft; 4-first driving mechanism, 41-telescopic rod, 42-ball head, 43-ball sleeve; 5- second driving mechanism; 6-Heat sink. DETAILED DESCRIPTION

[0022] The specific implementation methods of the present application are further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but are not intended to limit the scope of the present application.

[0023] In this application, the attached Figure 1-2 The Y and Z directions are the Y and Z axes of rotation of the landing light, and the up, down, left and right are the relative directions of the landing light in a static state after installation.

[0024] like Figure 1-2 As shown, a landing light according to a preferred embodiment of the present application comprises a mounting frame 1, a lamp body 2, a rotating ring 3, a first driving mechanism 4 and a second driving mechanism 5. The rotating ring 3 is rotatably arranged at one end of the mounting frame 1 around the Z axis, and both sides of the lamp body 2 are hinged to the rotating ring 3. The first driving mechanism 4 is connected to the rear side of the lamp body 2 and the other end of the mounting frame 1, and is used to drive the lamp body 2 to rotate around its hinge point along the Y axis to achieve pitch angle adjustment of the lamp body 2; the second driving mechanism 5 is connected to the rotating ring 3 and the other end of the mounting frame 1, and is used to drive the rotating ring 3 to rotate around the Z axis to drive the lamp body 2 to achieve roll angle adjustment.

[0025] Specifically, the rotating ring 3 is in the shape of a ring, the lamp body 2 is located in the rotating ring 3, and the center of the lamp body 2 coincides with the center of the rotating ring 3, and there is a gap between the lamp body 2 and the rotating ring 3 so that the lamp body 2 can rotate relative to the rotating ring 3 along the Y axis. The rotating ring 3 is provided with a rotating hole opened along the Z axis direction, and the mounting frame 1 includes a cross bar 11 and a longitudinal bar 12 connected to each other, and the other end of the cross bar 11 is provided with a vertically arranged rotating shaft 13, and the rotating hole is connected to the rotating shaft 13. The second driving mechanism 5 can be an electric cylinder, an air cylinder, an oil cylinder, etc., preferably an electric cylinder, whose cylinder body is connected to the longitudinal bar 12, and whose piston rod is connected to any side of the rotating ring 3. When the piston rod of the electric cylinder is extended and retracted, the rotating ring 3 is driven to rotate around the rotating shaft 13, and at this time, the lamp body 2 rotates with the rotating ring 3, so that the side tilt angle of the lamp body 2 is adjusted.

[0026] The two sides of the lamp body 2 are hinged to the rotating ring 3 through a hinge shaft 32 arranged along the Y-axis direction. Specifically, rotating plates 28 are respectively provided on both sides of the lamp body 2, and hinge holes are provided on the rotating plates 28. Two hinge frames 31 are relatively provided on the inner wall of the rotating ring 3. The two hinge frames 31 are arranged one-to-one with the two rotating plates 28. A hinge shaft 32 is provided on the hinge frame 31, and the hinge shaft 32 is connected to the hinge holes. When the first driving mechanism 4 is started, the lamp body 2 is driven to rotate around the axes of the two opposite hinge shafts 32, thereby realizing the pitch angle adjustment of the lamp body 2.

[0027] The landing light based on the above technical solution is provided with a rotating ring 3 rotatably arranged around the Z axis at one end of the mounting frame 1, and both sides of the lamp body 2 are hinged to the rotating ring 3. At the same time, the first driving mechanism 4 is connected to the rear side of the lamp body 2 and the other end of the mounting frame 1, so as to drive the lamp body 2 to rotate around its hinge point along the Y axis to achieve the pitch angle adjustment of the lamp body 2; the second driving mechanism 5 is connected to the rotating ring 3 and the other end of the mounting frame 1, so as to drive the rotating ring 3 to rotate around the Z axis to drive the lamp body 2 to achieve the roll angle adjustment, so that during the landing of the aircraft, it can be automatically adjusted according to the pitch angle or yaw angle of the aircraft, so that the lamp body 2 is always at the optimal pitch angle and yaw angle, which can not only ensure that the landing light meets the requirements of efficient lighting in the landing state of the main landing gear touching the ground and the stable taxiing stage, but also does not need to increase lamp beads, thereby reducing the cost, avoiding affecting the heat dissipation, and ensuring the performance of the landing light.

[0028] In this embodiment, the first driving mechanism 4 can be an electric cylinder, a gas cylinder, an oil cylinder, a lead screw, etc., all of which include a telescopic rod 41, the two ends of the telescopic rod 41 are respectively a driving end and a connecting end, the connecting end is connected to the mounting frame 1, and the driving end is hinged to the lamp body 2. Taking the electric cylinder as an example, its cylinder body is connected to the longitudinal rod 12 of the mounting frame 1, and the end of the telescopic rod 41 away from the cylinder body is the driving end, and the driving end can be provided with a ball sleeve 43, and a ball head 42 can be provided on the lamp body 2, and the ball head 42 is sleeved on the ball sleeve. When the electric cylinder is extended and retracted, the lamp body 2 is driven to rotate around the hinge shaft 32, thereby realizing the rotation of the lamp body 2 around its hinge point along the Y axis to achieve the pitch angle adjustment of the lamp body 2.

[0029] However, to achieve the purpose of driving the lamp body 2 to rotate through the telescopic rod 41, the center of the end face of the driving end should be located above or below the center of the rear side of the lamp body 2, but not overlapped, so that the telescopic rod 41 can pull the lamp body 2 to rotate. At the same time, to ensure the best driving effect, the vertical line passing through the center of the rear side of the lamp body 2 intersects with the axis of the telescopic rod 41.

[0030] like Figure 4 As shown, in order to minimize the overall structure of the landing light, the first driving mechanism 4 should be as small as possible. Taking the electric cylinder as an example, its size is not only determined by its push-pull force, but also by the length of its telescopic rod 41. When the distance between the center of the end face of the driving end and the center of the rear side of the lamp body 2 in the vertical direction is small, the telescopic rod 41 can drive the lamp body 2 to rotate a larger angle under a smaller stroke. At this time, since the arm of force of the telescopic rod 41 acting on the lamp body 2 is small, it is necessary to ensure that the electric cylinder has a larger push-pull force, and the size of the electric cylinder needs to be increased; when the distance between the center of the end face of the driving end and the center of the rear side of the lamp body 2 in the vertical direction is large, at this time, since the arm of force of the telescopic rod 41 acting on the lamp body 2 is large, the push-pull force of the electric cylinder can be reduced, but at this time, the length of the telescopic rod 41 needs to be increased to increase the stroke of the telescopic rod 41, so as to ensure that the lamp body 2 can rotate a larger angle under the action of the telescopic rod 41. At this time, in order to ensure the length of the telescopic rod 41, the size of the electric cylinder also needs to be increased. Therefore, in order to balance the push-pull force of the electric cylinder and the length of the telescopic rod 41, the rear side of the lamp body 2 is generally circular, and its radius is R. If the vertical distance between the center of the end face of the driving end and the center of the rear side of the lamp body 2 is L, then L=(0.3~0.6)R, such as 0.35R, 0.4R, 0.45R, 0.5R, 0.55R, etc. At this time, it can avoid that the telescopic rod 41 needs a larger length, and it can also avoid that the electric cylinder needs a larger push-pull force, thereby achieving the electric cylinder using the optimal size and the overall size of the smaller landing light.

[0031] In addition, the specific installation position of the ball head 42 is based on the coincidence of the axis of the rotating shaft 13 and the center of the ball head 42 in the initial state, and the diameter of the ball head 42 is the same as the diameter of the rotating shaft 13, that is, when the rotating ring 3 rotates around the Z axis, the rotating ring 3 has two hinge points, the rotating shaft 13 and the ball head 42 (the ball head 42 cooperates with the ball sleeve 43 to form a ball joint structure), which ensures the rotation stability of the rotating ring 3. As can be seen from the above, when the roll angle of the lamp body 2 needs to be adjusted, the lamp body 2 needs to be in the initial state, and the lamp body 2 is in the initial position before adjustment. Therefore, when the actual adjustment is performed, if the pitch angle and roll angle of the lamp body 2 need to be adjusted at the same time, the second driving mechanism 5 is started first to adjust the roll angle of the rotating ring 3. After the roll angle is adjusted, the first driving mechanism 4 is started to adjust the pitch angle of the lamp body 2; if only one state needs to be adjusted, the first driving mechanism 4 or the second driving mechanism 5 can be directly driven to adjust.

[0032] If, during the actual landing process, the attitude of the aircraft keeps changing and the landing lights need to be adjusted multiple times according to different attitudes, then if the roll angle of the lamp body 2 needs to be adjusted again in the subsequent adjustment process, the lamp body 2 needs to be reset before adjusting the roll angle each time; if the subsequent adjustment is only the pitch angle adjustment, it does not need to be reset and can be adjusted directly through the first drive mechanism 4.

[0033] The specific rotation angle of the lamp body 2 depends on the flight attitude of the aircraft, which belongs to the control input. The attitude input of the aircraft comes from the fuselage sensors such as the gyroscope accelerometer. The fuselage performs angle compensation calculations (pitch angle, roll angle, yaw angle) by itself, and converts the compensation value of the spatial coordinates into the telescopic distance of the first drive mechanism 4 and the second drive mechanism 5. Common angle compensation algorithms include: complementary filtering, Kalman filtering, direction cosine matrix, etc. These are all existing technologies and will not be repeated here. That is, the complete control process is: aircraft attitude information → attitude solution → control import → lamp body control.

[0034] like Figure 3-4 As shown, in this embodiment, the lamp body 2 includes a cover body 21 and a shell 22 made of metal material. The shell 22 is bowl-shaped, has an opening, and includes a shell body and a bottom plate. The cover body 21 is made of flame-retardant polycarbonate and is arranged on the shell 22 to cover the opening. A light source is provided inside the shell 22 corresponding to the cover body 21. The first driving mechanism 4 is connected to the bottom plate, and radiator assemblies are symmetrically provided on both sides of the first driving mechanism 4 on the bottom plate to dissipate heat from the lamp body 2.

[0035] Specifically, the radiator assembly includes a plurality of heat sinks 6 that are spaced apart and arranged in parallel. The heat sink 6 and the housing 22 are made of the same material, such as copper, aluminum, etc., and are made of the same metal, which is convenient for one-piece molding and has a good heat dissipation effect. However, in order to ensure a better heat dissipation effect, the area of ​​the heat sink 6 can be as large as possible. However, since it is necessary to ensure that the air between the heat sink 6 can flow smoothly during the heat dissipation process to ensure heat dissipation, this requires that the intervals between adjacent heat sinks 6 be as large as possible. Comprehensive considerations and experiments show that if the thickness of the heat sink 6 is h, and the spacing between two adjacent heat sinks 6 is s, if the spacing between them satisfies s=(5~6)h, such as s=5.1h, s=5.2h, s=5.3h, s=5.4h, s=5.5h, s=5.6h, s=5.7h, s=5.8h, s=5.9h, etc., then the best heat dissipation effect can be guaranteed. When setting specifically, the value range of h is 1~2mm, such as 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, etc. The value of s can be 8~9mm as a reference, such as 8.1mm, 8.2mm, 8.3mm, 8.4mm, 8.5mm, 8.6mm, 8.7mm, 8.8mm, 8.9mm, etc.

[0036] As for the height of the heat sink 6, it can be determined by the total surface area of ​​the heat sink 6. Specifically, if the area of ​​the bottom plate is S1, and the sum of the surface areas of the plurality of heat sinks 6 is S2, then S2=(8~12)S1, such as S2=8.5S1, S2=9S1, S2=9.5S1, S2=10S1, S2=10.5S1, S2=11S1, S2=11.5S1, etc. That is, when setting, first determine the number, spacing and thickness of the heat sink 6 to ensure that they meet s=(5~6)h, and then determine the height of the heat sink according to S2=(8~12)S1, thereby achieving the setting of the heat sink 6.

[0037] In this embodiment, in order to ensure that the landing light can meet the requirements of high-efficiency lighting in both landing states, the selection of the light source is very important. For this application, it is necessary to ensure that the illumination value is not less than 21.6Lx (lux). When selecting, it can be selected according to the luminous flux of the light source 23, specifically: The luminous flux of the light source 23 is set to F v , the thickness of the cover body 21 is a, and the area of ​​the surface (inner surface) of the cover body 21 close to the shell 22 is S, then they satisfy: F v *0.95 0.5a *0.9*0.65≥21.6 S; Here, a is an integer multiple of 2, that is, the thickness of the cover body 21 can only be 2 mm, 4 mm, 6 mm, 8 mm, etc.

[0038] When the above formula is satisfied, it can be ensured that the light from the light source 23 can reach an illumination value of not less than 21.6Lx after passing through the cover 21, and can simultaneously meet the light performance requirements of the landing light during the main landing gear touchdown stage and the steady taxiing stage.

[0039] It should be noted that the above formula is generally for the case where the outer surface of the cover body 21 is an arc. If the outer surface of the cover body 21 is a plane, the relationship satisfied therebetween is: F v *0.95 0.5a *0.9≥21.6 s.

[0040] In this embodiment, a base 24 is provided on the inner wall of the shell 22, a printed circuit board 25 is provided on the base 24, the light source 23 is connected to the printed circuit board 25, and a heat-conducting silica gel 26 is provided between the base 24 and the printed circuit board 25, which can play an insulating role and can effectively conduct the heat generated by the printed circuit board 25 to the base 24 through the heat-conducting silica gel 26, and then conduct the heat from the base 24 to the shell 22, and finally to the heat sink 6 for heat dissipation. At the same time, in order to improve the heat dissipation effect of the landing light and facilitate the rapid conduction of the heat on the base 24 to the shell 22, a heat-conducting graphite sheet 27 is provided between the base 24 and the shell 22. Graphite has a good thermal conductivity and can quickly conduct heat to the shell 22 for heat dissipation, thereby improving the heat dissipation effect.

[0041] like Figure 5As shown, the light source 23 may be one lamp bead 231 or multiple lamp beads 231, but in order to reduce the volume of the landing light, the light source 23 may be in the form of multiple lamp beads 231. Specifically, the light source 23 includes multiple lenses 232 disposed on the printed board 25 and multiple lamp beads 231 disposed one-to-one corresponding to the lenses 232, wherein the multiple lenses 232 may be arranged as an integrated lens. The end of the lens 232 connected to the printed circuit board 25 is provided with a light collecting groove 2321, and the lamp bead 231 is connected to the printed circuit board 25 and is arranged inside the light collecting groove 2321; the bottom wall of the light collecting groove 2321 is a first refractive surface 2322, the side wall of the light collecting groove 2321 is a second refractive surface 2323, the other end of the lens 232 is a light emitting surface 2324, the side wall of the lens 232 is a total reflection surface 2325, the first refractive surface 2322 and the second refractive surface 2323 intersect at a first circular ring, the line connecting the center of the lamp bead 231 and any point of the first circular ring is a middle line 2326, the angle between the middle line 2326 and the axis of the lens 232 is c, and the value range of c is 20~26°, such as 21°, 22°, 23°, 24°, 25°, etc.

[0042] The light emitted by the lamp bead 231 will be divided into two parts, which are irradiated on the first refractive surface 2322 and the second refractive surface 2323 respectively. The first refractive surface 2322 deflects the incident light at a certain angle and collimates the light out; the light incident on the second refractive surface 2323 is refracted and reaches the total reflection surface 2325, and then forms a reflection on the reflection surface to collimate the light out, that is, the light with an angle of [0°~c] passes through the lens 232 and is collimated by refraction; and the light with an angle of [c~90°] passes through the lens 232 and is collimated by total reflection. According to the refractive index of the lens 232, by controlling c at 20~26°, it can be ensured that when it is necessary to collimate the light with a larger angle emitted by the lamp bead 231, a better collimation effect can be obtained, and at the same time, the curved surface of the lens 232 can be avoided from collimating, which is convenient for processing and reduces the processing difficulty of the lens 232.

[0043] It should be noted that in this application, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0045] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present application. These improvements and substitutions should also be regarded as the scope of protection of the present application.

Claims

1. A landing light, characterized in that: It includes a mounting frame, a lamp body, a rotating ring, a first driving mechanism and a second driving mechanism. The rotating ring is rotatably arranged around the Z axis at one end of the mounting frame. Both sides of the lamp body are hinged to the rotating ring. The first driving mechanism is connected to the rear side of the lamp body and the other end of the mounting frame, and is used to drive the lamp body to rotate around its hinge point along the Y axis to achieve pitch angle adjustment of the lamp body; the second driving mechanism is connected to the rotating ring and the other end of the mounting frame, and is used to drive the rotating ring to rotate around the Z axis to drive the lamp body to achieve roll angle adjustment.

2. The landing light according to claim 1, characterized in that: The first driving mechanism comprises a telescopic rod, two ends of which are a driving end and a connecting end respectively, the connecting end is connected to the mounting frame, and the driving end is hinged to the lamp body.

3. The landing light according to claim 2, characterized in that: The center of the end surface of the driving end is located above or below the center of the rear side of the lamp body, and a vertical line passing through the center of the rear side of the lamp body intersects with the axis of the telescopic rod; The rear side of the lamp body is circular, and its radius is R. The distance between the center of the end surface of the driving end and the center of the rear side of the lamp body in the vertical direction is L, and L=(0.3~0.6)R.

4. The landing light according to claim 1, characterized in that: The lamp body includes a cover body and a shell made of metal material. The shell is bowl-shaped with an opening, including a shell body and a bottom plate. The cover body is arranged on the shell to cover the opening. A light source is arranged inside the shell corresponding to the cover body. The first driving mechanism is connected to the bottom plate, and heat sink assemblies are symmetrically arranged on both sides of the first driving mechanism on the bottom plate.

5. The landing light according to claim 4, characterized in that: The radiator assembly includes a plurality of radiating fins spaced apart and arranged in parallel, the radiating fins are made of the same material as the shell, the thickness of the radiating fins is h, the spacing between two adjacent radiating fins is s, s=(5~6)h, and the value range of h is 1~2mm.

6. The landing light according to claim 5, characterized in that: The area of ​​the bottom plate is S1, the sum of the surface areas of the plurality of heat sinks is S2, and S2=(8-12)S1.

7. The landing light according to claim 4, characterized in that: The luminous flux of the light source is F v , the cover is made of flame-retardant polycarbonate, and its thickness is a, and the area of ​​the surface of the cover close to the shell is S, then they satisfy: F v *0.95 0.5a *0.9*0.65≥21.6 S; Here, a is an integer multiple of 2.

8. The landing light according to claim 4, characterized in that: The inner wall of the shell is provided with a base, a printed circuit board is provided on the base, the light source is connected to the printed circuit board, a heat-conducting silica gel is provided between the base and the printed circuit board, and a heat-conducting graphite sheet is provided between the base and the shell.

9. The landing light according to claim 8, characterized in that: The light source includes a plurality of lenses arranged on the printed board and a plurality of lamp beads arranged one by one corresponding to the lenses, one end of the lens connected to the printed board is provided with a light receiving groove, and the lamp beads are connected to the printed board and arranged inside the light receiving groove; The bottom wall of the light collecting groove is the first refractive surface, the side wall of the light collecting groove is the second refractive surface, the other end of the lens is the light emitting surface, the side wall of the lens is the total reflection surface, the first refractive surface and the second refractive surface intersect at the first circular ring, the line connecting the center of the lamp bead and any point of the first circular ring is the middle line, the angle between the middle line and the axis of the lens is c, and the value range of c is 20~26°.

10. The landing light according to claim 1, characterized in that: Rotating plates are respectively provided on both sides of the lamp body, and hinge holes are provided on the rotating plates. Two hinge frames are relatively provided on the inner wall of the rotating ring. The two hinge frames are arranged in one-to-one correspondence with the two rotating plates. A hinge shaft is provided on the hinge frame, and the hinge shaft is connected to the hinge hole.

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