A landing light

Abstract

The application relates to the technical field of lighting devices, and discloses a landing light, which comprises a mounting frame, a lamp body, a rotating ring, a first driving mechanism and a second driving mechanism. The rotating ring is rotatably arranged at one end of the mounting frame around the Z axis. The two sides of the lamp body are hingedly connected with the rotating ring. The rear side of the lamp body and the other end of the mounting frame are connected with the first driving mechanism, which is used for driving the lamp body to rotate around the hinged point along the Y axis, so that the pitch angle of the lamp body is adjusted. The other end of the mounting frame and the rotating ring are connected with the second driving mechanism, which is used for driving the rotating ring to rotate around the Z axis, so that the lamp body is driven to adjust the roll angle. The application can automatically adjust according to the pitch angle or the deflection angle of an airplane, the lamp body is always at the optimal pitch angle and the optimal deflection angle, the landing light can meet the high-efficiency lighting requirements in two landing states, the lamp beads do not need to be increased, the cost is reduced, and the performance of the landing light is ensured.

Description

TECHNICAL FIELD

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

[0002] According to the requirements of the aircraft to the landing light, the landing light has clear light performance requirements in the main landing gear touchdown stage (A stage) and the smooth sliding stage (B stage). In the A stage, the illuminance value at the ground 120 meters in front of the pilot cannot be lower than 21.6Lx (lux); in the B stage, the illuminance value at the ground 90 meters in front of the pilot cannot be lower than 5.9Lx. The existing landing light is divided into halogen landing light and LED landing light, and is generally installed at a fixed angle of attack, wherein the installation angle of attack depends on the angle of attack when the aircraft lands.

[0003] However, in actual use, the pitch angle of the aircraft landing will change, which has a great influence on the actual lighting distance. At the same time, the A and B states during landing are essentially contradictory, and 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 requirement, and the conventional method is to increase the number of lamp beads. However, when the number of lamp beads is increased to increase the power, it can only be realized by increasing the current, which not only causes the heat to increase exponentially, affecting the structure heat dissipation and service life, but also limits the maximum number of lamp beads. Therefore, merely increasing the number of lamp beads cannot meet the demand. In addition, the existing landing light lighting system also adjusts the installation angle to meet the illuminance requirements of different landing pitch angles of the aircraft model during landing. However, the installation is complex. SUMMARY

[0004] To solve the above technical problems, the present application provides a landing light which can ensure that the landing light meets the requirements of efficient lighting in the landing states of the main landing gear touchdown stage and the smooth sliding stage at the same time, reduces the cost, avoids affecting the heat dissipation, and ensures the performance of the landing light.

[0005] The technical scheme adopted by the present application to solve the technical problems is:

[0006] A landing light, comprising a mounting frame, a lamp body, a rotating ring, a first driving mechanism and a second driving mechanism, the rotating ring is rotatably arranged at one end of the mounting frame about the Z axis, the two sides of the lamp body are hingedly connected with 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 to drive the lamp body to rotate about the hinge point along the Y axis, so as to realize the 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 is used to drive the rotating ring to rotate about the Z axis, so as to drive the lamp body to realize the roll angle adjustment.

[0007] Preferably, the first driving mechanism comprises a telescopic rod, two ends of the telescopic rod 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.

[0008] Preferably, the center of the end face 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 the axis of the telescopic rod.

[0009] The rear side of the lamp body is circular, and the radius of the rear side is R, the distance between the center of the end face 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.

[0010] Preferably, the lamp body comprises a cover body and a shell made of metal, the shell is bowl-shaped and has an opening, the shell comprises a shell body and a bottom plate, the cover body is arranged on the shell to cover the opening, the inside of the shell is provided with a light source corresponding to the cover body, the first driving mechanism is connected to the bottom plate, and a heat sink assembly is symmetrically arranged on both sides of the first driving mechanism on the bottom plate.

[0011] Preferably, the heat sink assembly comprises a plurality of heat sink fins arranged in parallel and at intervals, the heat sink fins are made of the same material as the shell, the thickness of the heat sink fins is h, the distance between two adjacent heat sink fins is s, s=(5-6)h, and h is in the range of 1-2 mm.

[0012] Preferably, the area of the bottom plate is S1, the sum of the surface areas of the plurality of heat sink fins is S2, and S2=(8-12)S1.

[0013] Preferably, the luminous flux of the light source is F v , the cover body is made of flame-retardant polycarbonate, the thickness of the cover body is a, the area of the surface of the side of the cover body close to the shell is S, and the following conditions are met:

[0014] F v *0.95 0.5a *0.9*0.65≥21.6 S;

[0015] wherein a is an integer multiple of 2.

[0016] Preferably, the inner wall of the shell is provided with a base, the base is provided with a printed board, the light source is connected to the printed board, heat-conducting silica gel is arranged between the base and the printed board, and heat-conducting graphite sheets are arranged between the base and the shell.

[0017] Preferably, the light source comprises a plurality of lenses arranged on the printed board and a plurality of lamp beads arranged one-to-one with the lenses, one end of the lens connected with the printed board is provided with a light collecting groove, and the lamp bead is connected with the printed board and arranged inside the light collecting groove.

[0018] The bottom wall of the light collecting groove is a first refractive surface, the side wall of the light collecting groove is a second refractive surface, the other end of the lens is a light emitting surface, the side wall of the lens is a total reflection surface, the first refractive surface and the second refractive surface intersect at a first circular ring, the center line of the lamp bead and any point of the first circular ring is a middle line, and the included angle between the middle line and the axis of the lens is c, and the value range of c is 20-26°.

[0019] Preferably, the two sides of the lamp body are respectively provided with rotating plates, the rotating plates are provided with hinge holes, the inner wall of the rotating ring is oppositely provided with two hinge frames, the two hinge frames are arranged one-to-one with the two rotating plates, the hinge frames are provided with hinge shafts, and the hinge shafts are connected with the hinge holes.

[0020] Compared with the prior art, the landing light has the beneficial effects that: by arranging the rotating ring to be rotatable around the Z axis at one end of the mounting frame, the two sides of the lamp body are hinged with the rotating ring, meanwhile, the first driving mechanism is connected with the rear side of the lamp body and the other end of the mounting frame, to drive the lamp body to rotate around the hinge point along the Y axis, to realize the 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, to drive the rotating ring to rotate around the Z axis, to drive the lamp body to realize the roll angle adjustment, so that in the process of landing of the airplane, the pitch angle or the yaw angle of the airplane can be automatically adjusted, the lamp body is always at the best pitch angle and yaw angle, the landing light can not only ensure that the landing light meets the requirements of efficient illumination in the landing state of the main landing gear ground contact stage and the smooth sliding stage, but also does not need to increase the lamp beads, thereby reducing the cost and avoiding affecting the heat dissipation, to ensure the performance of the landing light. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a perspective view of the landing light of the present application.

[0022] Figure 2 It is a structural schematic view of the landing light of the present application.

[0023] Figure 3 It is an exploded view of the lamp body of the present application.

[0024] Figure 4 It is a structural schematic view of the heat sink of the present application.

[0025] Figure 5 It is a structural schematic view of the light source of the present application.

[0026] Wherein: 1-mounting bracket, 11-crossbar, 12-vertical bar, 13-rotating shaft;

[0027] 2-Lamp body, 21-Shadow, 22-Housing shell, 23-Light source, 231-LED bead, 232-Lens, 2321-Light receiving groove, 2322-First refractive surface, 2323-Second refractive surface, 2324-Light emitting surface, 2325-Total reflection surface, 2326-Center line, 24-Base, 25-Printed circuit board, 26-Thermal conductive silicone, 27-Graphite sheet, 28-Rotating plate;

[0028] 3-Rotating ring, 31-Hinge frame, 32-Hinge shaft;

[0029] 4-First drive mechanism, 41-Telescopic rod, 42-Ball head, 43-Ball sleeve;

[0030] 5-Second drive mechanism;

[0031] 6-Heat sink. Detailed Implementation

[0032] The specific embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but are not intended to limit the scope of this application.

[0033] In this application, the appendix Figures 1-2 The Y and Z directions are the Y and Z axes of the landing light rotation, and up, down, left, and right are the relative directions of the landing light when it is stationary after installation.

[0034] like Figures 1-2 As shown, a preferred embodiment of this application of a landing light includes a mounting bracket 1, a lamp body 2, a rotating ring 3, a first driving mechanism 4, and a second driving mechanism 5.

[0035] The rotating ring 3 is rotatably mounted on one end of the mounting bracket 1 around the Z-axis. The two 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 bracket 1, and is used 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 bracket 1, and is used to drive the rotating ring 3 to rotate around the Z-axis to drive the lamp body 2 to achieve the side tilt angle adjustment.

[0036] Specifically, the rotating ring 3 is circular, 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 for the rotation of the lamp body 2 along the Y axis relative to the rotating ring 3. The rotating ring 3 is provided with a rotating hole opened along the Z axis direction, and the mounting frame 1 comprises a cross rod 11 and a vertical rod 12 connected together, the other end of the cross rod 11 is provided with a rotating shaft 13 arranged vertically, and the rotating hole is connected to the rotating shaft 13. The second driving mechanism 5 can adopt an electric cylinder, a gas cylinder, an oil cylinder, etc., preferably an electric cylinder, the cylinder body of which is connected to the vertical rod 12, and the piston rod thereof is connected to any side of the rotating ring 3, when the piston rod of the electric cylinder extends or retracts, the rotating ring 3 is driven to rotate around the rotating shaft 13, at this time the lamp body 2 rotates with the rotating ring 3, and the adjustment of the side inclination angle of the lamp body 2 is realized.

[0037] 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, the two sides of the lamp body 2 are respectively provided with a rotating plate 28, the rotating plate 28 is provided with a hinge hole, the inner wall of the rotating ring 3 is provided with two hinge frames 31 in opposite positions, the two hinge frames 31 and the two rotating plates 28 are arranged one by one in correspondence, the hinge frame 31 is provided with a hinge shaft 32, and the hinge shaft 32 is connected to the hinge hole, 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, so that the adjustment of the pitch angle of the lamp body 2 is realized.

[0038] Based on the above technical scheme, the landing light is characterized in that the rotating ring 3 is rotatably arranged at one end of the mounting frame 1 around the Z axis, the two 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, for driving the lamp body 2 to rotate along the Y axis around the hinge point, so as to realize the adjustment of the pitch angle 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, for driving the rotating ring 3 to rotate around the Z axis, so as to drive the lamp body 2 to realize the adjustment of the side inclination angle, so that during the landing process of the airplane, the pitch angle or the deflection angle of the airplane can be automatically adjusted, the lamp body 2 is always in the best pitch angle and deflection angle, not only can ensure that the landing light meets the requirements of high-efficiency illumination in the landing state of the main landing gear touching the ground stage and the smooth sliding stage at the same time, but also does not need to increase the lamp beads, thereby reducing the cost and avoiding affecting the heat dissipation, and ensuring the performance of the landing light.

[0039] In this embodiment, the first driving mechanism 4 can adopt electric cylinder, cylinder, oil cylinder, screw rod, etc., which all include telescopic rod 41, both ends of the telescopic rod 41 are driving end and connecting end respectively, the connecting end connects the mounting frame 1, and the driving end is hinged with the lamp body 2. Taking electric cylinder as an example, the cylinder body connects the longitudinal rod 12 of the mounting frame 1, the end of the telescopic rod 41 away from the cylinder body is the driving end, the driving end can be provided with ball sleeve 43, the lamp body 2 can be provided with ball head 42, and the ball head 42 is sleeved on the ball sleeve. When the electric cylinder is telescoped, the lamp body 2 is driven to rotate around the hinge shaft 32, so that the lamp body 2 rotates along the Y axis around the hinge point to realize the pitch angle adjustment of the lamp body 2.

[0040] However, to realize the rotation of the lamp body 2 driven by the telescopic rod 41, the center of the end face of the driving end should be above or below the center of the rear side of the lamp body 2, but cannot coincide, so that the telescopic rod 41 can pull the lamp body 2 to rotate. At the same time, in order 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.

[0041] As shown in Figure 4 In order to minimize the overall structure of the landing light, the first driving mechanism 4 should be as small as possible. Taking electric cylinder as an example, its size is not only determined by its push-pull force, but also by the length of the 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 in a smaller stroke. At this time, since the force arm of the telescopic rod 41 acting on the lamp body 2 is small, the electric cylinder needs to have a larger push-pull force, so 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, since the force arm of the telescopic rod 41 acting on the lamp body 2 is large, the push-pull force of the electric cylinder can be reduced. However, at this time, the length of the telescopic rod 41 needs to be increased to increase the stroke of the telescopic rod 41, so 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 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 L, then L=(0.3~0.6)R, such as 0.35R, 0.4R, 0.45R, 0.5R, 0.55R, etc. At this time, the telescopic rod 41 can avoid needing a large length, and the electric cylinder can avoid needing a large push-pull force, so that the electric cylinder adopts the optimal size, and the overall size of the landing light is small.

[0042] In addition, the specific position of the ball head 42 is installed, and in the initial state, the axis of the rotating shaft 13 coincides with the center of the ball head 42, 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 of the rotating shaft 13 and the ball head 42 (the ball head 42 cooperates with the ball sleeve 43 to form a ball hinge structure), which ensures the stability of the rotation of the rotating ring 3. As can be seen from the above, when the side tilt 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 adjusting the lamp body 2, if the pitch angle and the side tilt angle need to be adjusted at the same time, the second driving mechanism 5 is started first to adjust the side tilt angle of the rotating ring 3, and then 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.

[0043] If the attitude of the aircraft changes continuously during the actual landing process, and the landing light needs to be adjusted multiple times according to different attitudes, if the side tilt angle of the lamp body 2 needs to be adjusted again during subsequent adjustment, the lamp body 2 needs to be reset before each adjustment of the side tilt angle. If the subsequent adjustment is only the adjustment of the pitch angle, the lamp body 2 does not need to be reset and can be directly adjusted by the first driving mechanism 4.

[0044] The specific rotation angle of the lamp body 2 depends on the flight attitude of the aircraft and belongs to the input of regulation and control. The attitude input of the aircraft comes from the fuselage sensors such as gyroscopes and accelerometers, and the angle compensation calculation (pitch angle, roll angle, yaw angle) is performed by the fuselage itself. The compensation value of the space coordinates is converted into the extension distance of the first driving mechanism 4 and the second driving mechanism 5. Common angle compensation algorithms include complementary filtering, Kalman filtering, and direction cosine matrix. These are all prior art and will not be described here. The complete control process is: aircraft attitude information→attitude solution→control import→lamp body regulation and control.

[0045] As shown in FIG. 1, Figures 3-4 As shown in FIG. 1,

[0046] Specifically, the heat sink assembly includes a plurality of heat dissipation fins 6 arranged in parallel and spaced apart, which are made of the same material as the shell 22, such as copper, aluminum, etc., and are made of the same metal, which is convenient for one-piece forming and has good heat dissipation effect. However, in order to ensure good heat dissipation effect, the area of the heat dissipation fin 6 can be as large as possible, but in the heat dissipation process, the air between the heat dissipation fins 6 needs to flow smoothly to ensure heat dissipation, which requires that the adjacent heat dissipation fins 6 be spaced apart as much as possible. After comprehensive consideration and through tests, it is found that if the thickness of the heat dissipation fin 6 is h, the spacing between the two adjacent heat dissipation fins 6 is s, and 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., the best heat dissipation effect can be ensured. In specific arrangement, the value of h is in the range of 1-2mm, such as 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, etc. The value of s can be taken as 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.

[0047] As for the height of the heat dissipation fin 6, it can be determined according to the total surface area of the heat dissipation fin 6. Specifically, if the area of the bottom plate is S1 and the sum of the surface areas of the plurality of heat dissipation fins 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, in specific arrangement, the number, spacing and thickness of the heat dissipation fin 6 are first determined to ensure that s = (5-6)h, and then the height of the heat dissipation fin is determined according to S2 = (8-12)S1, so that the arrangement of the heat dissipation fin 6 is realized.

[0048] In this embodiment, in order to ensure that the landing light can meet the high-efficiency lighting requirements in two landing states at the same time, the selection of the light source is very important. For this application, the illuminance value needs to be ensured to be not less than 21.6Lx (lux). In selection, the luminous flux of the light source 23 can be selected, specifically:

[0049] The luminous flux of the light source 23 is set as F v , the thickness of the cover body 21 is a, and the area of the surface (inner surface) of the side of the cover body 21 close to the shell 22 is S, which satisfies:

[0050] F v *0.95 0.5a*0.9*0.65≥21.6 S;

[0051] Wherein, a is an integer multiple of 2, that is, the thickness of the cover 21 can only be 2mm, 4mm, 6mm, 8mm, etc.

[0052] When the above formula is satisfied, it can be ensured that the light of the light source 23 can reach the requirement of illuminance value not less than 21.6Lx after passing through the cover 21, and the light performance requirement of the landing light in the main landing gear touchdown stage and the smooth sliding stage can be met at the same time.

[0053] It should be noted that the above formula is generally for the case that the outer surface of the cover 21 is arc-shaped, if the outer surface of the cover 21 is a plane, then the relationship between them is satisfied:

[0054] F v *0.95 0.5a *0.9≥21.6 S.

[0055] In this embodiment, the inner wall of the shell 22 is provided with a base 24, the base 24 is provided with a printed board 25, the light source 23 is connected to the printed board 25, and the base 24 and the printed board 25 are provided with heat-conducting silica gel 26, which can play an insulating role and can effectively conduct the heat generated by the printed board 25 to the base 24 through the heat-conducting silica gel 26, and then to the shell 22, and finally to the heat dissipation fins 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 heat on the base 24 to the shell 22, the base 24 and the shell 22 are provided with heat-conducting graphite sheets 27. The heat conductivity coefficient of graphite is good, which can quickly conduct heat to the shell 22 for heat dissipation, thereby improving the heat dissipation effect.

[0056] As Figure 5As shown, the light source 23 can be one lamp bead 231 or multiple lamp beads 231, but in order to reduce the size of the landing light, the light source 23 can be selected in the form of multiple lamp beads 231. Specifically, the light source 23 includes multiple lenses 232 arranged on the printed board 25 and multiple lamp beads 231 arranged one by one with the lenses 232, wherein the multiple lenses 232 can be arranged as an integrated lens. The lens 232 connected to one end of the printed board 25 is provided with a light collecting groove 2321, and the lamp bead 231 connected to the printed board 25 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 center line of the lamp bead 231 and any point of the first circular ring is an intermediate line 2326, and the included angle between the intermediate line 2326 and the axis of the lens 232 is c, the value of c is in the range of 20-26°, such as 21°, 22°, 23°, 24°, 25°, etc.

[0057] The light emitted by the lamp bead 231 will be divided into two parts and irradiated on the first refractive surface 2322 and the second refractive surface 2323 respectively. The first refractive surface 2322 deflects the incident light by a certain angle to collimate the light. The light incident on the second refractive surface 2323 reaches the total reflection surface 2325 after refraction, and is reflected on the reflection surface to collimate the light. That is, the light with an angle of [0°-c] is collimated by the lens 232 through refraction, and the light with an angle of [c-90°] is collimated by the lens 232 through total reflection. According to the refractive index of the lens 232, by controlling c in the range of 20-26°, better collimation effect can be obtained when collimating the light with a larger angle emitted by the lamp bead 231, and the curvature of the lens 232 can be avoided, which is convenient for processing and reduces the processing difficulty of the lens 232.

[0058] It should be noted that in the present application, the terms "mounting", "arrangement", "provided with", "connection", "connection" should be understood broadly. For example, it can be fixedly connected, detachably connected, or integrally configured; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, or it can be the internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0059] In addition, the terms "first", "second", and the like, are used merely to distinguish different devices, elements or components (the specific type and configuration of which can be the same or different), and are not intended to refer to relative importance or quantity. Unless otherwise specified, the meaning of "a plurality" is two or more.

[0060] The above description is merely the preferred embodiments of the present application, and it should be pointed out that for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and replacements can be made, which should also be considered as the protection scope of the present application.

Claims

1. A landing light characterized by: The application relates to a landing light, 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, the two sides of the lamp body are hinged to the rotating ring, the rear side of the lamp body and the other end of the mounting frame are connected to the first driving mechanism, the first driving mechanism is used for driving the lamp body to rotate around the hinge point along the Y axis, so that the pitch angle of the lamp body is adjusted; the other end of the mounting frame and the rotating ring are connected to the second driving mechanism, the second driving mechanism is used for driving the rotating ring to rotate around the Z axis, so that the lamp body is driven to adjust the roll angle. The center of the rear side of the lamp body coincides with the center of the rotating ring, a rotating hole is arranged on the rotating ring and extends along the Z axis direction, the mounting frame comprises a horizontal rod and a vertical rod which are connected, the other end of the horizontal rod is provided with a rotating shaft arranged vertically, and the rotating hole is connected to the rotating shaft. The first driving mechanism comprises a telescopic rod, the two ends of the telescopic rod are respectively a driving end and a connecting end, the connecting end is connected to the end of the vertical rod away from the horizontal rod, the driving end is provided with a ball sleeve, the lamp body is provided with a ball head, and the ball head is sleeved on the ball sleeve; in the initial state, the axis of the rotating shaft coincides with the center of the ball head, and the diameter of the ball head is the same as that of the rotating shaft, when the rotating ring rotates around the Z axis, the rotating ring has two hinge points of the rotating shaft and the ball head; The center of the end face 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 the radius of the rear side of the lamp body is R, 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 is L, and L=(0.3-0.6)R; The lamp body comprises a cover body and a shell made of metal, and the inside of the shell is provided with a light source corresponding to the cover body; The light flux of the light source is F v The material of the cover is flame-retardant polycarbonate, and the thickness of the cover is a, and the area of the surface of the side of the cover close to the shell is S. When the outer surface of the cover body is arc-shaped, the following conditions are met: F v 0.95 0.5a 0.9*0.65≥21.6S; When the outer surface of the cover body is a plane, the following conditions are met: F v 0.95 0.5a 0.9≥21.6S; Wherein, a is an integer multiple of 2; If the pitch angle and the roll angle of the lamp body need to be adjusted at the same time, the second driving mechanism is started first to adjust the roll angle of the rotating ring, and when the roll angle is adjusted, the first driving mechanism is started to adjust the pitch angle of the lamp body; if only one state needs to be adjusted, the first driving mechanism or the second driving mechanism is directly driven to adjust. When the landing light needs to be adjusted for multiple times according to different postures, if the roll angle of the lamp body needs to be adjusted again in the subsequent adjustment process, the lamp body needs to be reset before the roll angle is adjusted each time, and then the adjustment is performed; if the subsequent adjustment is only the adjustment of the pitch angle, the lamp body does not need to be reset and the first driving mechanism is directly used for adjustment.

2. The landing light of claim 1, wherein: The shell is bowl-shaped and has an opening, comprises a shell main body and a bottom plate, the cover body is arranged on the shell to cover the opening, the first driving mechanism is connected to the bottom plate, and the bottom plate is symmetrically provided with a radiator assembly on the two sides of the first driving mechanism.

3. The landing light of claim 2, wherein: The heat dissipation component comprises a plurality of heat dissipation fins arranged in parallel and spaced apart, the heat dissipation fins are made of the same material as the shell, the thickness of the heat dissipation fins is h, the distance between two adjacent heat dissipation fins is s, s=(5-6)h, and h is in the range of 1-2 mm.

4. The landing light of claim 3, wherein: The area of the bottom plate is S1, the sum of the surface areas of the plurality of heat dissipation fins is S2, and S2=(8-12)S1.

5. The landing light of claim 2, wherein: The inner wall of the shell is provided with a base, the base is provided with a printed board, the light source is connected to the printed board, the base and the printed board are provided with heat-conducting silica gel, and the base and the shell are provided with heat-conducting graphite sheets.

6. The landing light of claim 5, wherein: The light source comprises a plurality of lenses arranged on the printed board and a plurality of lamp beads corresponding to the lenses, one end of the lens connected to the printed board is provided with a light collecting groove, and the lamp bead is connected to the printed board and arranged inside the light collecting groove. The bottom wall of the light collecting groove is a first refractive surface, the side wall of the light collecting groove is a second refractive surface, the other end of the lens is a light emitting surface, the side wall of the lens is a total reflection surface, the first refractive surface and the second refractive surface intersect at a first circular ring, the center line of the lamp bead and any point of the first circular ring is a middle line, the included angle between the middle line and the axis of the lens is c, and c is in the range of 20-26°.

7. The landing light of claim 1, wherein: Both sides of the lamp body are respectively provided with rotating plates, the rotating plates are provided with hinge holes, the inner wall of the rotating ring is oppositely provided with two hinge frames, the two hinge frames and the two rotating plates are one-to-one corresponding, the hinge frames are provided with hinge shafts, and the hinge shafts are connected to the hinge holes.

Images