TWI874928B - High air tightness headlamp for vehicle - Google Patents

Abstract

A high air tightness headlamp for a vehicle includes an outer cover component, a rotating component, a driving component, a light source component, a projection component, and a control component. The outer cover component has a component accommodating space defined by a base and an inner support surface. The rotating component is disposed in the component accommodating space to rotate around a rotation axis relative to the outer cover component. The driving component is disposed between the outer cover component and the rotating component, so as to drive the rotating component to perform an adaptable rotation operation in response to a posture change of a vehicle body. The light source component is disposed inside the rotating component to emit illumination light and rotate with the rotating component. The projection component is retained on a holding opening of the outer cover component and located on an output path of illumination light. The control component is connected to the outer cover component and includes a rotational state sensor.

Description

High airtight car headlight

The present invention relates to a vehicle headlight, and in particular to a highly airtight vehicle headlight.

Headlights (or headlamps) are like the eyes of a moving vehicle and are very important for driving safety. In the early days, whether it was a low beam or a high beam, the lighting pattern provided was fixed and did not adjust accordingly with the posture of the vehicle when entering a curve, so there were many shortcomings in actual use. For example, when a vehicle is driving on a curved road, the lighting pattern in front will also tilt to the left or right. In this way, there will be a lighting blind spot in front of the vehicle, causing the driver to be unable to see the road conditions on the inside of the road, which may cause traffic accidents.

With the continuous advancement of vehicle lighting technology, more and more headlights with adjustable lighting patterns have come onto the market. Such headlights can adjust the characteristics of the lighting pattern, including lighting range and lighting distance, according to changes in the vehicle's posture, to provide drivers with the best vision and ensure driving safety. There are several types of these lamp technologies. The first type exposes the rotatable lamp and fixes the non-rotatable part of the lamp to the vehicle body. The disadvantage of this type of lamp is that the user is likely to touch the lamp, which increases the probability of lamp failure. In addition, there are problems with airtightness, waterproofness, and dustproofness between the rotatable part and the non-rotatable part. Another type of lamp is to place the rotatable part in a light-permeable shell to achieve complete airtightness, waterproofness, and dustproofness, and use an independent motor unit to drive the rotatable part of the lamp. However, the disadvantage of this type of lamp is that the independent motor unit is The heat generated by the coil and iron core of the motor cannot be effectively transferred to the housing of the lamp, which can easily cause the motor to overheat and damage the motor. In addition, the rotatable part of the lamp cannot effectively transfer the heat of the lamp to the non-rotating housing of the lamp due to its rotational characteristics. Moreover, the lamp has a motor and rotatable parts, which are often too far away from the maintenance port and difficult to disassemble for maintenance, or the entire lamp needs to be completely disassembled to repair the damaged parts inside, which makes maintenance difficult and the cost of maintenance too high. The above problems are the reasons that hinder the popularization of this type of adjustable beam type car lights.

The technical problem to be solved by the present invention is to provide a highly airtight vehicle headlight to address the deficiencies of the existing technology.

In order to solve the above technical problems, one of the technical solutions adopted by the present invention is to provide a highly airtight vehicle headlamp, which includes an outer cover component, a rotating component, a driving component, a light source component, a projection component and a control component. The outer cover component is suitable for being installed on a vehicle body and is in a fixed state, and the outer cover component includes a support part and a bracket shell part, and the support part is detachably formed into a whole with the bracket shell part, wherein the support part includes a base, and the bracket shell part includes a bracket inner surface and a bracket opening, and the base and the bracket inner surface constitute a component accommodating area. The rotating component is configured to be rotatable around a rotation axis relative to the outer cover component in the component accommodating area, wherein the rotating component is an inseparable one-piece component and includes an outer shell and a base portion arranged in the outer shell, and the outer shell and/or the base portion have a bearing surface, wherein a bearing unit is arranged between the rotating component and the outer cover component, and the bearing unit defines a rotation axis. The driving component is arranged between the outer cover component and the rotating component, and has an outer annular surface and an inner annular surface which are arranged opposite to each other and formed with a central axis as the center. The central axis is coaxial with the rotating axis, wherein the driving component is located near the bearing unit, one of the outer annular surface and the inner annular surface is fixedly connected to the outer shell, and the other of the outer annular surface and the inner annular surface is fixedly connected to the supporting part; the outer annular surface and the inner annular surface serve as heat dissipation surfaces. The light source component is arranged in the rotating component and rotates with the rotating component, and the light source component includes a solid-state light source and a light guide portion, the solid-state light source is fixed on the bearing surface, and the light guide portion is arranged to guide the illumination light emitted by the solid-state light source to a light output path. The projection component is fixed to the bracket opening of the outer cover component and is located on the light exit path to project the illumination light outward. The control component is connected to the support portion and is configured to cause the driving component to drive the rotating component to rotate a predetermined angle according to the posture change of the vehicle body.

One of the beneficial effects of the present invention is that the highly airtight vehicle headlamp of the present invention increases the airtightness of the headlamp and facilitates the repair and maintenance of the driving component by including the technical features of "the outer cover component has a component accommodating area formed by a base and an inner surface of a bracket", "the rotating component is arranged to be rotatable relative to the outer cover component rotation axis in the component accommodating area, and the driving component is arranged between the outer cover component and the rotating component to drive the rotating component to perform an adaptable rotation operation corresponding to the posture change of the vehicle body", and "the light source component is arranged in the rotating component to emit illumination light and rotate with the rotating component, and the projection component is fixed to the bracket opening of the outer cover component and is located on the light emission path of the illumination light".

To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are only for reference and description and are not used to limit the present invention.

V: Vehicles

Z: High airtight vehicle headlight

1: Outer cover parts

100: Component storage area

100a: First storage space

100b: Second storage space

11: Support part

110: Assembly slot

111: Base

112: Support seat

12: Bracket shell

121: Bracket opening

122: Inner surface of bracket

1221: Second positioning structure

2: Rotating parts

200: Loading surface

200a: First bearing surface

200b: Second bearing surface

21: Shell

210: Light outlet opening

211: Radial end face

2111: First positioning structure

2112: Retention structure

22: Base part

23: Supporting part

24: Wiring department

25: Encoder actuator

3: Driving parts

300a: Outer annular surface

300b: Inner ring surface

31: Electromagnetic components

311: Iron core

3111: Ring-shaped part

3112: Feet

312: Coil winding assembly

32: Magnetic parts

4: Light source components

41:Solid-state light source

410: Shiny surface

42: Conductive substrate

43: Light guide part

430: Reflective surface

44: Adapter plate

45: Light distribution parts

451:Optically effective part

452: Resting area

453: Pressure point

5: Projection components

501: Incident surface

502: exit surface

6: Control components

61: Control circuit board

62: Rotation state sensor

A1: Rotating axis

A2: Center axis

B: Bearing unit

CL: Cut-off line

CP: Geometric Center

D: Unlit blind spot

P: Lighting pattern

R1: First angular distance

R2: Second angular distance

S: Elastic parts

θ: Tilt angle

Figure 1 is a schematic diagram of a three-dimensional assembly of a high-airtight vehicle headlight according to the first embodiment of the present invention.

Figure 2 is another three-dimensional assembly schematic diagram of the high airtight vehicle headlight according to the first embodiment of the present invention.

Figure 3 is a three-dimensional exploded schematic diagram of a high airtight vehicle headlight according to the first embodiment of the present invention.

Figure 4 is another three-dimensional exploded schematic diagram of the high airtight vehicle headlight according to the first embodiment of the present invention.

Figure 5 is a schematic cross-sectional view of a high airtight vehicle headlight according to the first embodiment of the present invention.

Figure 6 is a partial structural schematic diagram of a high airtight vehicle headlight according to the first embodiment of the present invention.

Figure 7 is a schematic diagram of a high airtight vehicle headlight according to an embodiment of the present invention being applied to a vehicle.

Figure 8 is a schematic diagram of the actual operation of the high airtight vehicle headlight according to an embodiment of the present invention.

FIG9 is a three-dimensional exploded schematic diagram of a high airtight vehicle headlight according to the second embodiment of the present invention.

Figure 10 is another three-dimensional exploded schematic diagram of the high airtight vehicle headlight according to the second embodiment of the present invention.

Figure 11 is a schematic cross-sectional view of a high airtight vehicle headlight according to the second embodiment of the present invention.

Figure 12 is a partial structural schematic diagram of a high airtight vehicle headlight according to the second embodiment of the present invention.

Figure 13 is a schematic diagram of a three-dimensional assembly of a high-airtight vehicle headlight according to the third embodiment of the present invention.

Figure 14 is a three-dimensional exploded schematic diagram of a high airtight vehicle headlight according to the third embodiment of the present invention.

FIG. 15 is another three-dimensional exploded schematic diagram of the high airtight vehicle headlight according to the third embodiment of the present invention.

Figure 16 is a schematic cross-sectional view of a highly airtight vehicle headlight according to the third embodiment of the present invention.

Figure 17 is a schematic diagram of a portion of the structure of a high airtight vehicle headlight according to the third embodiment of the present invention.

Figure 18 is a schematic diagram of a portion of the structure of a high airtight vehicle headlight according to the third embodiment of the present invention.

The following is a specific embodiment to illustrate the implementation of the "high airtight vehicle headlight" disclosed in the present invention. The technical personnel in this field can understand the advantages and effects of the present invention from the content disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only for simple schematic illustrations and are not depicted according to actual sizes. Please note in advance. The following implementation will further explain the relevant technical content of the present invention in detail, but the disclosed content is not intended to limit the scope of protection of the present invention. In addition, the term "or" used in this document may include any one or more combinations of the associated listed items as the case may be.

Unless otherwise defined, the terms used in this article have the same meaning as commonly understood by technical personnel in this field. The components or operations involved in each embodiment are conventional components or operations in this field unless otherwise specified.

[First embodiment]

Please refer to Figures 1 to 5, which show the components and specific configuration of the high airtight vehicle headlamp Z according to the first embodiment of the present invention. As shown in the above figures, the high airtight vehicle headlamp Z of the present invention can be used to provide front lighting for vehicles such as motorcycles and other two-wheeled vehicles, and includes an outer cover component 1, a rotating component 2, a driving component 3, a light source component 4, a projection component 5 and a control component 6. The rotating component 2 and the driving component 3 are assembled inside the outer cover component 1, the light source component 4 is set to rotate synchronously with the rotating component 2 inside, and the projection component 5 and the control component 6 are both combined with the outer cover component 1, so as to form a whole.

As shown in FIG. 7 and FIG. 8 , in the present invention, the housing component 1 is suitable for being mounted on a vehicle V and is in a fixed state, the rotating component 2 is arranged to be rotatable relative to the housing component 1, and the driving component 3 is arranged between the housing component 1 and the rotating component 2 to drive the rotating component 2. In addition, the light source component 4 is arranged inside the rotating component 2 to emit illumination light, and the projection component 5 is arranged on the light-emitting path of the illumination light to project the illumination light outward to form a light distribution pattern P with a horizontal light-dark cut-off line CL (cut-off line). The control component 6 can issue a control instruction to the driving component 3 according to the change of the posture of the vehicle body, so that the driving component 3 drives the rotating component 2 to rotate around a rotation axis A1. Therefore, the high airtight vehicle headlamp Z of the present invention can cooperate with the rotation state sensor 62 to instantly sense the rotation state of the rotating component 2, so that the rotating component 2 can be rotated maneuverably to achieve dynamic lighting.

The high airtight vehicle headlamp Z of the present invention can maintain the forward illumination light distribution at a desired position when the vehicle V changes its posture (such as the vehicle body tilts to the left or right at an angle θ relative to the road surface), so as to avoid an unilluminated blind spot D on the road ahead, thereby ensuring driving safety. Furthermore, the control component 6 mainly includes a control circuit board 61, which can obtain the motion state information of the vehicle V through a motion sensing module (not shown), such as the tilt angle, tilt angle velocity and other posture information of the vehicle body, and control instructions to the driving component 3 accordingly, including but not limited to the driving direction (such as the rotation direction) and the driving amount (such as the rotation driving amount), so that the driving component 3 drives the rotating component 2 to perform an adapted rotation operation, and the rotating component 2 drives the light source component 4 (solid-state light source 41) to rotate a predetermined angle in the clockwise or counterclockwise direction to turn the light distribution pattern P to the right, that is, the light and dark cut-off line CL of the light distribution pattern P returns to the initial horizontal position (parallel to the horizontal line H-H).

In the following, the components of the high airtight vehicle headlight Z of the present invention and the constraints and matching relationships between them will be described in detail.

Please refer to Figures 1 to 5, and in conjunction with Figure 6, the outer cover component 1 is suitable for installation on the vehicle body and is in a fixed state. The outer cover component 1 includes a support portion 11 and a bracket shell 12, and the support portion 11 is integrally formed with the bracket shell 12 in a detachable manner (for example, a locking connection). The support portion 11 includes a base 111, and the bracket shell 12 includes a bracket opening 121 and a bracket inner surface 122. It is worth noting that the base 111 and the bracket inner surface 122 constitute a component accommodating area 100 to accommodate the rotating component 2 and the driving component 3, and an airtight seal can be formed between the base 111 and the bracket inner surface 122.

Furthermore, the cover component 1 as the assembly basis of the entire lighting device can stably install the entire lighting device on the vehicle body, wherein the driving component 3 is integrated between the rotating component 2 and the cover component and can directly drive the rotating component 2, without the need to transmit power through a transmission mechanism such as a transmission shaft, a gear set, etc. It should be noted that the cover component 1 can also be combined with the lamp shell of the lamp body and accommodated in a lamp body, thereby serving as a follow-up lighting module of the lamp body. In addition, since the support portion 11 is integrally formed with the bracket shell 12 in a detachable manner, it is convenient to repair and maintain the driving device 3. In actual application, the bracket shell 12 can be set to be a cylindrical shape with an open end, and the base 111 of the support part 11 can be set to be a flat plate, but the present invention is not limited to this.

The rotating component 2 is an operating component for realizing the follow-up lighting. The rotating component 2 is configured to rotate around the rotation axis A1 relative to the outer cover component 1 in the component accommodating area 100. In order to make the rotation operation of the rotating component 2 more stable and smooth, a bearing unit B is provided between the rotating component 2 and the outer cover component 1, and the bearing unit B defines the rotation axis A1; the bearing unit B can be a thin-walled ball bearing. The rotating component 2 is an inseparable one-piece component (for example, a single metal component), which includes an outer shell 21, a base 22 disposed in the outer shell 21, and a supporting portion 23 extending from the base 22. The outer shell 21 is configured to accommodate the light source component 4 inside. The base portion 22 can be used to set the light source component 4 so that the projection component 5 is located on the light output path of the illumination light. The extension direction of the supporting portion 23 can be parallel to the rotation axis A1, and can be used to stably fix the driving component 3 in the component accommodating area 100. In actual application, the outer shell 21 can be set to a cylindrical shape with an open end, the base portion 22 can be set to a flat plate shape, and the supporting portion 23 can be set to a sleeve shape, but the present invention is not limited thereto.

In this embodiment, the outer shell 21 has a light-emitting opening 210 facing the bracket opening 121, and the base 22 has a bearing surface 200. The light source component 4 includes a solid-state light source 41 and a light-guiding portion 43. The solid-state light source 41 is disposed on the bearing surface 200 of the base 22. The light-guiding portion 43 is fixed on the outer shell 21 and closes the light-emitting opening 210. The light-guiding portion 43 of this embodiment is a plano-convex lens having a focal point (not shown), and the solid-state light source 41 is arranged near the focal point. Since the solid-state light source 41 generates a large amount of heat energy, the rotating component 2 is manufactured as a single metal component to facilitate heat dissipation and increase the heat dissipation area, so as to provide an additional heat dissipation area by using the outer shell 21 facing the driving component 3.

In this embodiment, the component accommodating area 100 is further divided into a first accommodating space 100a and a second accommodating space 100b with the base portion 22 of the rotating component 2 as the boundary. The first accommodating space 100a is located at one side (e.g., the front side) of the base portion and is connected to the bracket opening 121. The second accommodating space 100b is located at the other side (e.g., the rear side) of the base portion 22 and is closed by the base 111 of the supporting portion 11, and the supporting portion 23 extends in the second accommodating space 100b. After assembly is completed, the driving component 3 is located in the second accommodating space 100b and is disposed between the outer cover component 1 and the rotating component 2, and the light source component 4 is located in the first accommodating space 100a. In this embodiment, the driving component 3 is disposed between the inner surface 122 of the bracket and the supporting portion 23; in other words, the driving component 3 is located outside the rotating component 2 and inside the inner surface 122 of the bracket, as shown in Figures 5 and 6. It is worth noting that the present invention integrates the outer cover of a general motor and the outer shell of a general lamp body into a single component rotating component 2, so that it can achieve the beneficial technical effects of compact layout, small space occupation, high assembly efficiency, stable operation, reduced contact thermal resistance, and improved heat dissipation capacity.

The rotating component 2 also includes a wiring portion 24, which extends from the base portion 22 to the outside of the second accommodating space 100b, and is used to pass the wires from the control component 6. The extension direction of the wiring portion 24 can be parallel to the rotation axis A1, and the supporting portion 23 and the driving component 3 are both located between the wiring portion 24 and the inner surface 122 of the bracket.

The driving component 3 is the driving force source of the entire lighting device, and has an outer annular surface 300a and an inner annular surface 300b which are arranged opposite to each other and formed with a central axis A2 as the center. The central axis A2 is coaxial with the rotation axis A1. The driving component 3 is located near the bearing unit B, the outer annular surface 300a is fixedly connected to the inner surface 122 of the bracket, and the inner annular surface 300b is fixedly connected to the supporting portion 23, and the outer annular surface 300a and the inner annular surface 300b serve as heat dissipation surfaces. In this embodiment, the driving component 3 includes an electromagnetic component 31 and a magnetic component 32. The electromagnetic component 31 is disposed on the inner surface 122 of the bracket, and the magnetic component 32 is disposed on the supporting portion 23. The electromagnetic component 31 and the magnetic component 32 can cooperate with each other to generate electromagnetic torque, so that the rotating component 2 rotates around the rotation axis A1 in a clockwise or counterclockwise direction.

Specifically, as shown in FIG. 5 and FIG. 6 , the electromagnetic assembly 31 may include an iron core 311 and a plurality of coil windings 312. The iron core 311 has an annular portion 3111 and a plurality of legs 3112 extending from the inner periphery of the annular portion 3111 and distributed at a predetermined interval, and the plurality of coil windings 312 are respectively wound around the plurality of legs 3112. The annular portion 3111 of the iron core 311 may define an outer annular surface 300a, and the magnetic member 32 may define an inner annular surface 300b. In actual application, the annular portion 3111 of the iron core 311 can be fixedly connected to the inner surface 122 of the bracket of the outer cover part 1, and the magnetic member 32 can be fixedly connected to the supporting portion 23 of the rotating part 2, and at the same time, it is arranged opposite to the multiple legs 3112 of the iron core 311. The magnetic member 32 can be a single-piece or integral permanent magnet or composed of multiple magnets, but the present invention is not limited thereto.

In this embodiment, the bearing unit B is disposed between the bracket inner surface 122 of the outer cover component 1 and the outer shell 21 of the rotating component 2, as shown in FIG5 ; it is worth noting that the bearing unit B can accurately control the distance between the bracket inner surface 122 of the outer cover component 1 and the outer shell 21 of the rotating component 2, so that the bracket inner surface 122 of the outer cover component 1 is kept at an effective heat dissipation distance, so that the heat generated by the electromagnetic component 31 can be dissipated outwards through the outer cover component 1.

The light source component 4 may include a conductive substrate 42, which is disposed on the bearing surface 200 of the base portion 22 and the solid-state light source 41 is mounted on the conductive substrate 42 and can rotate synchronously with the rotating component 2. In practical applications, the solid-state light source 41 may include one or more light-emitting units such as light-emitting diode elements. The conductive substrate 42 may be a circuit board, and preferably a high thermal conductivity printed circuit board such as a metal-based printed circuit board (MCPCB), which can drive and light up the solid-state light source 41 according to a control instruction, for example, drive and light up one or more light-emitting units to generate a desired low beam light distribution pattern or a high beam light distribution pattern. In this embodiment, the light guide 43 can also rotate synchronously with the rotating component 2. The light guide 43 (plano-convex lens) has an incident surface 431 and an exit surface 432 relative to the incident surface 431. The incident surface 431 is a plane and the exit surface 432 is a convex surface. The convex surface is an optical curved surface with different curvatures and protrudes toward the bracket opening 121. Therefore, the light guide 43 can guide the illumination light emitted by the solid-state light source 41 to the projection component 5, and then emit it outward through the projection component 5.

It is worth mentioning that the bearing surface 200 is arranged on the base portion 22 of the rotating component 2 to provide sufficient heat dissipation area. The metal-based printed circuit board as the conductive substrate 42 can form the shortest heat transfer path between the solid-state light source 41 and the rotating component 2. In addition, the rotating component 2 is a single metal component, which can effectively improve the heat dissipation efficiency, so that the heat generated by the solid-state light source 41 can be quickly and evenly dissipated to the outside.

The projection component 5 has an incident surface 501 and an exit surface 502 opposite to the incident surface 501, and the projection component 5 can be mechanically coupled to the bracket opening 121, so that it can be stably fixed on the outer cover component 1, so that the projection component 5 is in a fixed state and will not rotate. The projection component 5 is designed such that when the illumination light leaves the light guide 43 along the optical path, it enters the incident surface 501 of the projection component 5, and then refracts along the optical path by the exit surface 502 of the projection component 5 and leaves the projection component 5 to a predetermined direction, thereby generating a light distribution pattern that meets the lighting requirements of vehicle lighting regulations, such as ECE R112 and R113 regulations (asymmetric light type and symmetric light type headlight regulations).

In this embodiment, the projection component 5 can be a uniform thickness lens, which can include a flat optical plastic plate or glass with uniform thickness, but is not limited thereto. Another type of uniform thickness lens is an optical curved surface with multiple curvatures on both the incident surface and the output surface, and the material can be optical plastic or glass.

The control component 6 is the control core of the entire lighting device. The control component 6 is connected to the outer cover component 1 and is arranged opposite to the driving component 3. Specifically, the control component 6 can be arranged to be integrated with the outer cover component 1 from the outside of the support part 11, or the control component 6 can be arranged as an independent component outside the outer cover component 1. The advantages of this are: the control component 6 can be easily disassembled and assembled, and can be independently heat-managed, so that the heat dissipation area of the control component 6 is not limited by the narrow space inside the outer cover component 1. In addition, there are more means to deal with electromagnetic interference.

The control component 6 further includes a rotation state sensor 62 for detecting the rotation state of the rotating component 2. Specifically, there is an IMU (inertial measurement unit) component in the vehicle body. Through an algorithm, the tilt angle of the vehicle body can be obtained, and the relevant vehicle body movement status information is sent to the control circuit board 61. The control circuit board 61 has a driving circuit that can issue a control instruction to enable the driving component 3 to drive the rotating component 2 to perform an adaptive rotation operation; in addition, the control component 6 can also include a hall sensor, an angular sensor and/or a magnetic encoder to sense the real-time position of the rotating component 2, so that the driving component 3 can rotate the rotating component 2 to the desired control angle after receiving a control instruction; in addition, in addition to being installed in the vehicle body, the IMU (inertial measurement unit) can also be installed in the control component 6, so that the circuit connected to the control component 6 can be simpler. In actual application, the control component 6 may include a control circuit board 61, a processing unit (not shown in the figure) and a rotation state sensor 62, and the processing unit and the rotation state sensor 62 may be arranged on the control circuit board 61. If necessary, the control component 6 may also include other sensors.

In addition, the driving component 3 is separated from the outside world only by the supporting portion 11 of the outer cover component 1, so the driving component 3 can be exposed after the supporting portion 11 is removed, so that the driving component 3 can be easily repaired and maintained. A wire groove is provided on the base portion 22 of the rotating component 2, which is formed by being recessed from the bearing surface 200. The wiring portion 24 has a wire passage extending in the direction of the rotation axis A1, and a corresponding opening is provided on the base of the supporting portion 11, so that the wire can pass through the wire groove, the wire passage, and the opening from the conductive substrate 42 to reach the control circuit board 61. Since the rotating component 2 rotates while the outer cover component 1 does not rotate, if the tilt angle of the vehicle body is 30 degrees to the left and 30 degrees to the right, the twisting amplitude of the wire will only twist within the range of 30 degrees to the left and right. Therefore, space for the wire twisting needs to be reserved in the wire passage of the routing part 24.

At the end of the wiring portion 24, an encoder actuator 25 may be provided, such as a magnet, preferably a ring-shaped magnet, but the present invention is not limited thereto. A preferred method is that the rotating shaft A1 passes through the center of the ring, and the magnet and the rotation state sensor 62 on the control component 6 are provided correspondingly. The rotation state sensor 62 may be an angular sensor or a magnetic encoder, so that the angular position of the rotating component 2 can be instantly known by the angular sensor or magnetic encoder on the controlled component 6. However, there are many other methods for obtaining the rotational angle position of the rotating component 2, including optical or mechanical rotation encoders. The encoder actuator of the optical encoder is an optical reflector, and the encoder actuator of the mechanical rotation encoder is a mechanical rotation structure. The operating principles of these encoders are different. The present invention mainly uses a magnetic encoder, so the encoder actuator 25 is a magnet. In conjunction with the tilt angle signal transmitted by the body tilt angle detected by the IMU on the body, or the body tilt angle state known by the built-in IMU on the control component 6, the processing unit on the control circuit board 61 can integrate these messages and appropriately send corresponding control instructions to the driving component 3, so that the driving component 3 drives the rotating component 2 to perform an adaptive rotation operation, such as rotating a predetermined angle, to eliminate or reduce the unilluminated blind area D that exists due to changes in the movement state of the vehicle V (such as changes in the body posture).

In an embodiment of the present invention, as shown in FIG5 , the control component 6 may include an outer cover covering the outside of the control circuit board 61 and a warning light arranged on the control circuit board 61, and a light-emitting surface of the warning light is exposed from a light-emitting hole of the outer cover, so as to remind the vehicle driver to check when the rotation operation function of the high airtight vehicle headlight Z fails. In addition, the control component 6 may include a switch module, which may be arranged on the outer cover and electrically connected to the control circuit board 61, for turning off the rotation operation function, so that the high airtight vehicle headlight Z is maintained in the factory setting state, at which time the driving component 3 will not operate and the rotating component 2 will not rotate.

[Second embodiment]

Referring to Fig. 9 to Fig. 12, the second embodiment of the present invention provides a highly airtight vehicle headlamp Z, which includes an outer cover component 1, a rotating component 2, a driving component 3, a light source component 4, a projection component 5 and a control component 6. The outer cover component 1 is suitable for being mounted on a vehicle body and is in a fixed state, and the outer cover component 1 has a component accommodation area 100 consisting of a base 111 and a bracket inner surface 122. The rotating component 2 is configured to be rotatable relative to the outer cover component 1 rotation axis A1 in the component accommodation area 100, and the driving component 3 is disposed between the outer cover component 1 and the rotating component 2 to drive the rotating component 2 to perform an adaptable rotation operation corresponding to the posture change of the vehicle body. In addition, the light source component 4 is disposed inside the rotating component 2 and rotates with the rotating component 2 to emit illumination light. The projection component 5 is fixed to the bracket opening 121 of the outer cover component 1 and is located on the light path of the illumination light to project the illumination light outward to form a light distribution pattern P. The control component 6 is connected to the outer cover component 1 and includes a rotation state sensor.

It is worth noting that the light source component 4 is configured to rotate together with the rotating component 2, the rotation state sensor 62 is suitable for obtaining the movement state information of the rotating component 2, such as the information of the angle position, and the control component 6 is configured to issue a control instruction to the driving component 3 according to the information obtained by the rotation state sensor 62. Accordingly, the rotating component 2 can drive the light source component 4 to rotate a predetermined angle in the clockwise or counterclockwise direction under the drive of the driving component 3 to turn the light distribution pattern P to the right, so that the light and dark cut-off line CL of the light distribution pattern P remains flat (parallel to the horizontal line H-H).

One difference between the second embodiment and the first embodiment is that the rotating component 2 does not include a bearing portion, and the bracket component 1 also includes a bearing seat 112 and an assembly groove 110 that passes through the bearing seat 112. The bearing seat 112 is configured to stably fix the driving component 3 in the component accommodating area 100, and the assembly groove 110 is configured to allow the wiring portion 24 of the rotating component 2 to pass through and assemble and combine; after completion, the driving component 3 is located between the bearing seat 112 of the bracket component 1 and the outer shell 21 of the rotating component 2, and the bearing seat 112 is located between the outer shell 21 of the rotating component and the wiring portion 24.

Specifically, the electromagnetic assembly 31 of the driving component 3 is disposed on the support seat 112 of the bracket component, and the magnetic component 32 is disposed on the outer shell 21 of the rotating component 2. In practical application, the annular portion 3111 of the iron core 311 can be fixedly connected to the support seat 112 of the bracket component, and the magnetic component 32 can be fixedly connected to the outer shell 21 of the rotating component 2, and at the same time, it is disposed opposite to the multiple legs 3112 of the iron core 311.

Another difference between the second embodiment and the first embodiment is that the solid-state light source 41 is disposed on the outer shell 21 of the rotating component 2 and can rotate synchronously with the rotating component 2. The light guide 43 is disposed between the outer shell 21 and the base 22 of the rotating component 2 to guide the illumination light emitted by the solid-state light source 41 to the light output path and travel to the incident surface 501 of the projection component 5 through the light output opening 210. The solid-state light source 41 also includes an adapter plate 44, such as a circuit board, which is arranged to form an electrical connection between the conductive substrate 42 and the control circuit board 61.

In this embodiment, the outer shell 21 is provided with a first bearing surface 200a, the solid-state light source 41 and the conductive substrate 42 are provided on the first bearing surface 200a, and the solid-state light source 41 is mounted on the conductive substrate 42. The base 22 is provided with a second bearing surface 200b, the adapter plate 44 is provided on the base 22, and the wires from the control component 6 can pass through the wiring portion 24 to connect to the adapter plate 44. In addition, the light-guiding portion 43 has a reflective surface 430, which can be a curved surface formed based on an elliptical curve, and the light-emitting surface 410 of the solid-state light source 41 is provided facing the reflective surface 430, so that the illumination light emitted by the solid-state light source 41 is reflected by the reflective surface 430 and then moves toward the incident surface 501 of the projection component 5.

Another difference between the second embodiment and the first embodiment is that the positions of the iron core 311, the magnetic member 32 and the bearing unit B correspond to each other, and the geometric center CP of the annular portion 3111 of the iron core 311, the magnetic member 32 and the bearing unit B coincide on the rotation axis A1, as shown in FIG12. Accordingly, the best structural stability can be achieved by relying on only one bearing unit B.

The relevant technical details mentioned in the first embodiment are still valid in this embodiment. In order to reduce repetition, they will not be repeated here. Correspondingly, the relevant technical details mentioned in this embodiment can also be applied in the first embodiment.

[Third practical example]

Referring to FIGS. 13 to 16 , the third embodiment of the present invention provides a highly airtight vehicle headlamp Z, which includes an outer cover component 1, a rotating component 2, a driving component 3, a light source component 4, a projection component 5, and a control component 6. The outer cover component 1 is suitable for being mounted on a vehicle body and is in a fixed state, and the outer cover component 1 has a component accommodation area 100 consisting of a base 111 and a bracket inner surface 122. The rotating component 2 is configured to be rotatable around a rotation axis A1 relative to the outer cover component 1 in the component accommodation area 100, and the driving component 3 is disposed between the outer cover component 1 and the rotating component 2 to drive the rotating component 2 to perform an adaptive rotation operation corresponding to the posture change of the vehicle body. In addition, the light source component 4 is disposed in the rotating component 2 and rotates with the rotating component 2 to emit illumination light. The projection component 5 is fixed to the bracket opening 121 of the outer cover component 1 and is located on the light emitting path of the illumination light to project the illumination light outward to form a light distribution pattern P. The control component 6 is connected to the outer cover component 1 and includes a rotation state sensor.

It is worth noting that the rotating component 2 is a single component; the light source component 4 is configured to rotate together with the rotating component 2, the rotation state sensor 62 is suitable for obtaining the movement state information of the rotating component 2, such as the information of the angle position, and the control circuit board 61 is configured to issue a control instruction to the driving component 3 according to the information obtained by the rotation state sensor 62. Accordingly, the rotating component 2 can drive the light source component 4 to rotate a predetermined angle in the clockwise or counterclockwise direction under the drive of the driving component 3 to turn the light distribution pattern P to the right, so that the light and dark cut-off line CL of the light distribution pattern P remains flat (parallel to the horizontal line H-H).

As shown in FIG. 17 and FIG. 18 , the third embodiment is different from the second embodiment in that the light source component 4 further includes a light distribution component 45, which is disposed between the solid-state light source 41 and the projection component 5 and fixed at the light outlet opening 210 of the rotating component 2, so that the illumination light generated by the solid-state light source 41 is redistributed by the light distribution component 45 and then projected outward by the projection component 5 to form a light distribution pattern P with a horizontal light-dark cutoff line.

As shown in FIG. 1 to FIG. 2 , the light distribution member 45 can be reciprocated between the first position and the second position under the drive of the rotating member 2. Specifically, the rotating member 2 has a radial end surface 211 surrounding the light outlet opening 210, and two first positioning structures 2111 are arranged on the radial end surface 211, which are symmetrically distributed around the rotation axis A1 at a first angular distance R1. In addition, two second positioning structures 1221 are arranged on the inner surface 122 of the bracket, which are symmetrically distributed around the rotation axis A1 at a second angular distance R2, and the second angular distance R2 is smaller than the first angular distance R1. In addition, the light distribution member 45 has an optically effective portion 451 and two abutment portions 452 respectively arranged on opposite sides of the optically effective portion 451. When the light distribution member 45 is located at the first position, the two abutting portions 452 abut against the two first positioning structures 2111 respectively; when the light distribution member 45 is located at the second position, one of the abutting portions 452 abuts against the corresponding first positioning structure 2111, and the other abutting portion 452 abuts against the corresponding second positioning structure 1221.

In the present embodiment, the projection component 5 is a lens, preferably a plano-convex lens. The light distribution component 45 can adjust the distribution of the illumination light so that the generated illumination light type has a clearer light cutoff line and outline, and if it is a low beam illumination light type, the position of the light cutoff line is below the H-H line (there is no light distribution above the H-H line). The light distribution component 45 can be a sunshade, and its free end (the unconnected end) has an optically effective edge (Optically Effective Edge) or cutoff edge) for generating different light distributions, but the present invention is not limited to this. In addition, the light distribution component 45 is connected to the rotating component 2 as a whole, so it can be driven by the rotating component 2 to reciprocate between a first position (as shown in FIG. 17) and a second position (as shown in FIG. 18) to selectively shield the illumination light from the light guide portion 43. Accordingly, the headlight can be switched between the low beam mode and the high beam mode, wherein the light distribution member 45 is in the low beam mode when in the first position, and is in the high beam mode when in the second position.

In actual application, a retaining structure 2112 is further provided on the radial end surface 211 of the rotating component 2, and the light distribution member 45 also has a pressing portion 453, which is arranged opposite to the optically effective portion 451, and an elastic member S (such as a spring) is arranged between the retaining structure 2112 and the pressing portion 453. When the light distribution member 45 is in the first position, the elastic member S is in an initial state (non-compressed state), so that the two abutting portions 452 of the light distribution member 45 abut against the two first positioning structures 2111 respectively. When the driving component 3 receives the instruction to switch to the high beam from the control circuit board 61, the driving component 3 drives the rotating component 2 to rotate, and rotates the light distribution component 45 from the first position to the second position after a predetermined angle, so that one of the abutting parts 452 abuts on the corresponding first positioning structure 2111 and the other abutting part 452 abuts on the corresponding second positioning structure. At this time, the elastic component S is compressed by the downward pressure of the pressing part 453 of the light distribution component 45, so that the illumination light from the light guide 43 passes through the light distribution component 45 (redistribution), and then is projected outward through the projection component to generate a high beam light distribution pattern.

[Beneficial effects of the embodiment]

One of the beneficial effects of the present invention is that the highly airtight vehicle headlamp of the present invention increases the airtightness of the headlamp and facilitates the repair and maintenance of the driving component by including the technical features of "the outer cover component has a component accommodating area formed by a base and an inner surface of a bracket", "the rotating component is arranged to be rotatable relative to the outer cover component rotation axis in the component accommodating area, and the driving component is arranged between the outer cover component and the rotating component to drive the rotating component to perform an adaptable rotation operation corresponding to the posture change of the vehicle body", and "the light source component is arranged in the rotating component to emit illumination light and rotate with the rotating component, and the projection component is fixed to the bracket opening of the outer cover component and is located on the light emission path of the illumination light".

Furthermore, in the high airtight vehicle headlight of the present invention, the optical axis of the projection component is parallel to the rotation axis of the rotating component, and preferably substantially coincides with the rotation axis of the rotating component, thereby reducing the control error of the rotation operation of the rotating component and improving the accuracy of the rotation angle adjustment of the projection component.

In addition, the present invention can precisely control the distance between the inner surface of the bracket of the outer cover component and the outer shell of the rotating component by arranging the bearing unit between the inner surface of the bracket of the outer cover component and the outer shell of the rotating component, so that the inner surface of the bracket of the outer cover component is kept at an effective heat dissipation distance, so that the heat generated by the electromagnetic component can be dissipated outward through the transmission of the outer cover component. Therefore, the heat dissipation problem can be solved while achieving a completely airtight state.

The above disclosed contents are only the preferred feasible embodiments of the present invention, and do not limit the scope of the patent application of the present invention. Therefore, all equivalent technical changes made by using the contents of the description and drawings of the present invention are included in the scope of the patent application of the present invention.

Z: High airtight vehicle headlight 1: Cover part 11: Support part 12: Bracket shell 5: Projection part 6: Control part

Claims (12)

A highly airtight vehicle headlamp comprises: an outer cover component, which is suitable for being mounted on a vehicle body and is in a fixed state, the outer cover component comprises a support portion and a bracket shell portion, the support portion is detachably connected to the bracket shell portion to form a whole, wherein the support portion comprises a base, the bracket shell portion comprises a bracket inner surface and a bracket opening, and the base and the bracket inner surface constitute a component accommodation area; a rotating component, which is arranged to be relatively movable in the component accommodation area. The outer cover component rotates around a rotation axis, wherein the rotation component is an inseparable one-piece component and includes an outer shell and a base portion arranged in the outer shell, and the outer shell and/or the base portion have a bearing surface, wherein a bearing unit is arranged between the outer shell and the inner surface of the bracket, and the bearing unit defines a rotation axis; a driving component is arranged between the outer cover component and the rotation component, and has a relatively arranged center axis. an outer annular surface and an inner annular surface, the central axis is coaxial with the rotating axis, wherein the driving component is located near the bearing unit, one of the outer annular surface and the inner annular surface is fixedly connected to the outer shell, and the other of the outer annular surface and the inner annular surface is fixedly connected to the supporting portion; the outer annular surface and the inner annular surface are used as heat dissipation surfaces; a light source component is arranged in the rotating component and rotates with the rotating component, and the light source component includes a A solid-state light source and a light guide, the solid-state light source is fixed on the supporting surface, the light guide is configured to guide the illumination light emitted by the solid-state light source to a light-emitting path; a projection component is fixed to the bracket opening of the outer cover component and is located on the light-emitting path to project the illumination light outward; and a control component is connected to the support component and is configured to make the driving component drive the rotating component to rotate a predetermined angle according to the posture change of the vehicle body. As described in claim 1, the component accommodating area is further divided into a first accommodating space and a second accommodating space by the base portion as a boundary, the first accommodating space is located on one side of the base portion and is connected to the bracket opening, and the second accommodating space is located on the other side of the base portion and is closed by the base of the supporting portion; the rotating component includes a supporting portion extending from the base portion to the second accommodating space, and the driving component includes an electromagnetic component and a magnetic member, the electromagnetic component is arranged on the inner surface of the bracket, and the magnetic member is arranged on The supporting part; the outer shell has a light outlet opening located in the first accommodation space and facing the bracket opening, the light guide part is a plano-convex lens, which is fixed on the outer shell and closes the light outlet opening; the projection component has an incident surface and an exit surface opposite to the incident surface, and both the incident surface and the exit surface are planes; the supporting surface of the base is located in the first accommodation space, and is arranged so that a light outlet surface of the solid-state light source is opposite to the incident surface of the projection component; the bearing unit is arranged between the inner surface of the bracket and the outer shell. As described in claim 2, the electromagnetic assembly includes an iron core and a plurality of coil windings, the iron core has an annular portion and a plurality of legs extending from the inner periphery of the annular portion and distributed at a predetermined interval, and the plurality of coil windings are respectively wound on the plurality of legs; the annular portion of the iron core defines the outer annular surface, which is fixedly connected to the inner surface of the bracket, and the magnetic member defines the inner annular surface, which is fixedly connected to the supporting portion. As described in claim 2, the high airtight vehicle headlight, wherein the control component is arranged to be integrated with the supporting portion of the outer cover component from outside the component accommodating space, and the control component includes a sensor for detecting the rotation state of the rotating component. As described in claim 4, the high airtight vehicle headlight, wherein the rotating component includes a wiring portion extending from the base portion to the outside of the second accommodating space for passing the wires from the control component, and the supporting portion and the driving component are both located between the wiring portion and the inner surface of the bracket. A highly airtight vehicle headlamp as described in claim 1, wherein the component accommodating area is further divided into a first accommodating space and a second accommodating space with the base portion as a boundary, the first accommodating space is located on one side of the base portion and is connected to the bracket opening, and the second accommodating space is located on the other side of the base portion and is closed by the base of the supporting portion; the outer cover component includes a support seat extending from the base to the second accommodating space, the driving component includes an electromagnetic component and a magnetic component, the electromagnetic component is arranged on the support seat, and the magnetic component is arranged on the outer shell; the outer cover component includes a support seat extending from the base to the second accommodating space, and the driving component includes an electromagnetic component and a magnetic component, the electromagnetic component is arranged on the support seat, and the magnetic component is arranged on the outer shell; The shell has a light outlet opening located in the first accommodation space and facing the bracket, the light guide portion is arranged between the outer shell and the base portion and has a reflective surface opposite to the light outlet opening; the projection component has an incident surface and an exit surface opposite to the incident surface, and both the incident surface and the exit surface are planes; the bearing surface of the outer shell is located in the first accommodation space, the solid-state light source is arranged on the bearing surface of the outer shell, and a light outlet surface of the solid-state light source faces the reflective surface; the bearing unit is arranged between the inner surface of the bracket and the outer shell. As described in claim 6, the light source component includes a light distribution component, which is arranged between the solid-state light source and the projection component, and the light distribution component is arranged to reciprocate between a first position and a second position under the drive of the rotating component; the rotating component has a radial end surface surrounding the light outlet opening, and the radial end surface is provided with two first positioning structures, which are symmetrically distributed around the rotation axis at a first angular distance; the light distribution component has an optically effective part and two abutment parts respectively arranged on opposite sides of the optically effective part; when the light distribution component is located at the first position, the two abutment parts abut against the two first positioning structures respectively. As described in claim 7, the high airtight vehicle headlight is provided with two second positioning structures on the inner surface of the bracket, which are symmetrically distributed around the rotation axis at a second angular distance, and the second angular distance is smaller than the first angular distance; when the light distribution component is located at the second position, one of the two abutting parts abuts against the corresponding first positioning structure, and the other of the two abutting parts abuts against the corresponding second positioning structure. As described in claim 6, the high airtight vehicle headlight, wherein the control component is arranged to be integrated with the supporting portion of the outer cover component from outside the component accommodating space, and the control component includes a sensor for detecting the rotation state of the rotating component. As described in claim 9, the high airtight vehicle headlight, wherein the rotating component includes a wiring portion extending from the base portion to the outside of the second accommodating space for passing the wires from the control component, and the support seat and the driving component are both located between the wiring portion and the inner surface of the bracket. As described in claim 6, the electromagnetic assembly includes an iron core and a plurality of coil windings, the iron core has an annular portion and a plurality of legs extending from the outer periphery of the annular portion and distributed at a predetermined interval, and the plurality of coil windings are respectively wound on the plurality of legs; the magnetic member defines the outer annular surface, which is fixedly connected to the outer shell, and the annular portion of the iron core defines the inner annular surface, which is fixedly connected to the support seat. A highly airtight vehicle headlamp as described in claim 11, wherein the positions of the iron core, the magnetic member and the bearing unit correspond to each other, and the geometric centers of the annular portion of the iron core, the magnetic member and the bearing unit coincide on the rotating shaft.

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