WO2023134697A1 - 一种led直管灯灯头 - Google Patents

一种led直管灯灯头 Download PDF

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Publication number
WO2023134697A1
WO2023134697A1 PCT/CN2023/071724 CN2023071724W WO2023134697A1 WO 2023134697 A1 WO2023134697 A1 WO 2023134697A1 CN 2023071724 W CN2023071724 W CN 2023071724W WO 2023134697 A1 WO2023134697 A1 WO 2023134697A1
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WO
WIPO (PCT)
Prior art keywords
positioning
lamp holder
lamp
unit
holder according
Prior art date
Application number
PCT/CN2023/071724
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English (en)
French (fr)
Inventor
王广东
Original Assignee
嘉兴山蒲照明电器有限公司
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Application filed by 嘉兴山蒲照明电器有限公司 filed Critical 嘉兴山蒲照明电器有限公司
Publication of WO2023134697A1 publication Critical patent/WO2023134697A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14—Adjustable mountings

Definitions

  • the invention belongs to the technical field of LED lighting devices, and in particular relates to a lamp holder of an LED straight tube lamp.
  • LED lighting is widely used because of its advantages of energy saving and long life.
  • LED fluorescent lamps commonly known as straight tube lamps, generally include a lamp tube, a lamp panel with a light source inside the lamp tube, and lamp holders at both ends of the lamp tube. board electrical connections.
  • the light source is a plurality of LED straight tube lamps arranged on the lamp board, and the plurality of LED straight tube lamps are sequentially arranged along the length direction of the lamp tubes.
  • LED straight tube lamps in the prior art usually include a lamp tube, a lamp holder, a lamp board, a hollow conductive pin and a power supply, wherein the lamp holder is fixed to the lamp tube, the power supply is set in the lamp holder and is electrically connected to the lamp board, and the hollow conduction pin
  • the needle is fixed on the end face of the lamp cap and is used for connecting with the external lamp holder, and the lamp plate is glued and fixed on the inner peripheral surface of the lamp tube.
  • This kind of LED straight tube lamp has the following disadvantages: the lamp board is bonded and fixed in the lamp tube, and the lamp cap and the lamp tube are fixed. At this time, the position of the lamp board and the hollow conductive needle is relatively fixed. The light output direction of the straight tube lamp is also fixed.
  • a rotatable lamp head has appeared in the art now to adjust the direction of light output.
  • the rotatable lamp cap in the prior art is generally on the length direction of the lamp, and the lamp cap can be divided into two parts, wherein a part is fixed with the lamp tube, and a part is rotatable.
  • the lamp cap of the lamp tube is not as good as the lamp tube. There are likely to be gaps after the connection between them, so the lamp tube may have the problem of poor moisture resistance. If the lamp cap and the lamp tube are filmed together, the rotatable part of the lamp cap will also be covered with a film, so that the lamp cap cannot be rotated. Therefore, the rotating lamp cap has the problem that the entire lamp cannot be coated.
  • Embodiments of the present invention provide a new lamp holder for LED straight tube lamps and features in various aspects to solve the above problems.
  • An embodiment of the present invention provides a lamp holder for an LED straight tube lamp, comprising:
  • the lamp cap is provided with a hollow conductive pin for connecting to an external power supply;
  • the lamp head includes a first component, a second component and a positioning unit, a first rotating component is set on the first component, a second rotating component is set on the second component, and the first rotating component and the second rotating component matching;
  • the positioning unit includes a first positioning unit and a second positioning unit, wherein the first positioning unit is arranged on the first member, the second positioning unit is arranged on the second member, and the first positioning unit is arranged on the first member.
  • a positioning unit cooperates with the second positioning unit to fix the relative position of the first component and the second component.
  • Fig. 1 is a perspective view showing an LED lamp cap according to an embodiment of the present invention
  • Fig. 2 is a schematic diagram showing an LED lamp cap according to an embodiment of the present invention.
  • Fig. 3 is a cross-sectional view showing the cross-sectional structure of an LED lamp cap according to an embodiment of the present invention
  • Fig. 4 is a perspective view showing the structure of the second component of the LED lamp cap according to an embodiment of the present invention.
  • Fig. 5 is a cross-sectional view showing the structure of the second component of the LED lamp cap according to an embodiment of the present invention.
  • Fig. 6 is a perspective view showing the structure of the first component of the LED lamp cap according to an embodiment of the present invention.
  • Fig. 7 is a perspective view showing the structure of the first component of the LED lamp cap according to an embodiment of the present invention.
  • Fig. 8 is a perspective view showing the structure of the first component of the LED lamp cap according to an embodiment of the present invention.
  • Fig. 9 is a cross-sectional view showing a cross-sectional structure of an LED lamp cap according to an embodiment of the present invention.
  • Fig. 10 is a perspective view showing a lamp holder of an LED lamp according to an embodiment of the present invention.
  • Fig. 11 is a perspective view showing the control components of the self-locking unit of the LED lamp cap according to an embodiment of the present invention.
  • Fig. 12 is a cross-sectional view showing the cross-sectional structure of an LED lamp cap according to an embodiment of the present invention.
  • Fig. 13 is a perspective view showing the structure of the second component of the LED lamp cap according to an embodiment of the present invention.
  • Fig. 14 is a perspective view showing the structure of the first component and the self-locking unit of the lamp cap of the LED lamp according to an embodiment of the present invention
  • Fig. 15 is a perspective view showing the structure of the first component and the self-locking unit of the lamp cap of the LED lamp according to an embodiment of the present invention
  • Fig. 16 is a perspective view showing the structure of the first component of the LED lamp cap according to an embodiment of the present invention.
  • Fig. 17 is a perspective view showing the structure of the first component of the LED lamp cap according to an embodiment of the present invention.
  • Fig. 18 is a perspective view showing the structure of the first component of the lamp base of the LED lamp according to an embodiment of the present invention.
  • the present invention provides a lamp cap assembly of an LED straight tube lamp in an embodiment, and the lamp cap assembly of an LED straight tube lamp includes: a lamp cap 1 and a conductive pin 2 .
  • the conductive pin 2 is arranged on the lamp cap 1 for connecting to an external power source.
  • the lamp cap 1 (the main part of the lamp cap) can be all metal, and an insulating device (not shown) can be provided inside the metal lamp cap to avoid electrical connection between the metal lamp cap 1 and the power supply.
  • the lamp cap 1 (the main body of the lamp cap) can also be made of insulating material, such as plastic.
  • the lamp cap 1 includes a first component 11 and a second component 12 .
  • the first member 11 includes a first rotating member 111 .
  • the second member 12 includes a second rotating member 121 .
  • the first rotating member 111 is in contact with the second rotating member 121, the first member 11 and the second member 12 are connected through the first rotating member 111 and the second rotating member 121, and realize the connection between the first member 11 and the second member 12 Rotatable connection.
  • the first rotating member 111 is disposed inside the second rotating member 121 (the side close to the lamp tube), and the first rotating member 111 disposed inside the second rotating member 121 can rotate relative to the second rotating member 121. Rotation, so as to realize the relative rotation of the first component 11 and the second component 12 . Further, the first rotating member 111 can be clamped on the second rotating member 121 and move on the peripheral side of the second rotating member 121 . The first rotating member 111 can be arranged in close contact with the second rotating member 121 to make the rotation more smooth.
  • this embodiment includes two first rotating members 111 .
  • the first rotating member 111 may include a first fixing unit 1111 .
  • the first fixing unit 1111 cooperates with the second rotating member 121 for rotation.
  • the first rotating member 111 may also include a first limiting structure 1112 . Through the cooperation between the first limiting structure 1112 and the second rotating structure 121 , the first rotating member 111 is connected to the second rotating member 121 , and the two are not easy to fall off and separate.
  • the first rotating member 111 protrudes away from the conductive needle 2 to form a first fixing unit 1111 .
  • the second rotating member 121 of the second member 12 may have a hole shape or a substantially hole shape. Further, the second rotating member 121 may be a circular hole or a substantially circular hole.
  • the distance from the first fixing unit 1111 to the center of the second rotating member 121 is the same or substantially the same as the radius of the second rotating member 121 .
  • the contact between the first fixing unit 1111 and the second rotating member 121 may be in the form of point contact. In some embodiments, the contact between the first fixing unit 1111 and the second rotating member 121 can be in the form of line contact, so as to increase the contact between the first fixing unit 1111 and the second rotating member 121, thereby improving the contact between the first fixing unit 1111 and the second rotating member 121.
  • the stability between the two rotating members 121. In some embodiments, the contact between the first fixing unit 1111 and the second rotating member 121 can be in the form of surface contact, further increasing the contact between the first fixing unit 1111 and the second rotating member 121, and improving the contact between the first fixing unit 1111 and the second rotating member 121. Stability between rotating members 121 .
  • the first fixing unit 1111 and the second rotating member 121 may be in surface contact.
  • the first fixing unit includes a first surface 11111 and a second surface 11112 .
  • the first surface 11111 is a surface away from the axis of the lamp cap 1
  • the second surface 11112 is a surface close to the axis of the lamp cap 1 .
  • the first surface 11111 cooperates with and contacts the second rotating member 121 and has a contact surface.
  • the first surface 11111 can be an arc surface, and the arc of the arc surface is the same or substantially the same as the arc of the second rotating member 121, so that the first fixing unit 1111 and the second rotating member 121 have a larger contact area, Thus, the stability between the first fixing unit 1111 and the second rotating member 121 is improved.
  • the distance from the first surface 11111 of the first fixing unit 1111 of the first member 11 to the axis of the lamp cap 1 is the same or substantially the same as the radius of the circle of the second rotating member 121,
  • the first rotating member 111 is snapped into the second rotating member 121 , and the first fixing unit 1111 and the second rotating member 121 have a contact surface, so that the first member 11 and the second member 12 can rotate relative to each other.
  • the first rotating member 111 further includes a first limiting member 1112 .
  • the first limiting structure 1112 cooperates with the second rotating structure 121 to make the first member 11 and the second member 12 relatively fixed, and make the first member 11 and the second member 12 difficult to fall off and separate.
  • the first limiting member 1112 is disposed on the inner side of the second member 12 , that is, the side away from the conductive needle 2 relative to the second rotating member 121 .
  • the first limiting member 1112 can be an extension portion of the edge of the first fixing unit 1111 .
  • first limiting member 1112 may be an extension portion of the edge of the first fixing unit 1111 facing away from the center of the second rotating member 121 . Specifically, after the first member 11 and the second member 12 are assembled, the first limiting member 1112 is clamped on the inner side of the second rotating structure 121, and the first limiting structure 1112 cooperates with the second rotating structure 121, so that The first rotating member 111 is connected with the second rotating member 121 and is not easy to fall off and separate.
  • the first limiting member 1112 on the edge of the first fixing unit 1111 is perpendicular or approximately perpendicular to the axial direction of the lamp cap 1, that is, parallel or approximately parallel to the end surface of the lamp cap 1, so that the first limiting member 1112 is aligned with the second
  • the connection between the two rotating components 121 is tighter.
  • the edge of the first limiting member 1112 may have a first fitting portion 11121 .
  • the first fitting portion 11121 may have a chamfered surface or an arc surface, or any other structure that is easy to buckle.
  • any first limiting member 1112 of the plurality of first limiting members 1112 includes a first limiting unit 11122 .
  • the second member 12 may include two second limiting members 122 .
  • the relative rotation between the first member 11 and the second member 12 is limited by the function of the first limiting unit 11122 and the second limiting member 122 of the second member 12 so that excessive rotation does not occur.
  • the first limiting unit 11122 rotates between the two second limiting members 122 . Because when the rotation angle is less than 160°, the adjustment of the light output angle is relatively limited; when the rotation angle is greater than 200°, the manufacturing cost will be wasted.
  • the relative rotation range of the first member 11 and the second member 12 is 160°-200°; more preferably, the second The relative rotation range of the first component 11 and the second component 12 is 170° ⁇ 190°.
  • the first limiting unit 11122 can be an extension of the first limiting member 1112 .
  • the second member 12 may include two second limiting members 122 , that is, the rotation range of the first member 11 is limited between the two second limiting members 122 .
  • the first limiting unit 11122 is matched with the second limiting member 122, and forms a limiting on the first positioning unit 11122, so as to play a role of limiting, so as to prevent the first member 11 from excessively rotating relative to the second member 12 and causing the wire to be entangled or be pulled off.
  • the two second limiting members 122 are arranged on the side of the second member 12 away from the conductive needle 2 .
  • the two second limiting members 122 are oppositely arranged.
  • the moving range of the first limiting unit 11122 is on an arc between the two second limiting members, and the center of the arc is in line with the second rotating member.
  • the centers of circles of 121 are the same or approximately the same.
  • the arc from the point of contact between one side of the first limiting unit 11122 and a second limiting member 122 to the point of contact between the other side of the first limiting unit 11122 and another second limiting member 122 that is, the maximum moving path of the first limit unit 11122.
  • one side of the first limiting unit 11122 can be rotated by 160°-200°; preferably, it can be rotated by 170°-190°.
  • the length of the first limiting unit 11122 in the cross-sectional direction of the lamp cap 1 and away from the center of the circle is a; the length of the first limiting member 1112 in the cross-sectional direction of the lamp cap 1 is b; the second limiting member
  • the shortest distance between 122 and the second rotating member 121 is c, then a+b>c, so that the second limiting member can interact with the first limiting unit 11122 to achieve a blocking effect.
  • the first limiting unit 11122 is parallel or substantially parallel to the end surface of the lamp cap 1 . Taking the center point of the end face of the lamp cap 1 as the center of the circle, the length of the first limiting unit 11122 in the circumferential direction is the same as or different from the length of the first limiting member 1112 in the circumferential direction. Preferably, the length of the first limiting unit 11122 in the circumferential direction is smaller than the length of the first limiting member 1112 in the circumferential direction, so as to save material cost and play a role of limiting.
  • the second rotating member 121 of the second member 12 further includes a fitting portion 1211 .
  • the first limiting unit 11122 can be snapped into the fitting portion 1211 , so that the first member 11 is snapped into the second member 12 .
  • the shape of the fitting portion 1211 is the same or substantially the same as that of the first limiting unit 11122 . Therefore, during assembly, the first limiting unit 11122 can be snapped into the fitting portion 1211 .
  • the edge of the first limiting unit 11122 may include a second fitting portion 11123 , so that the first limiting unit 11122 can be more easily snapped into the fitting portion 1211 .
  • the fitting part 1211 can also have a raised part 12111 , through the restriction of the raised part 12111 , it can ensure that the first limiting unit 11122 is not easy to slip out of the embedded part 1211 when it moves.
  • the protruding part 12111 is located on the first limiting unit 11122, through the restricting effect of the protruding part 12111, it can ensure that the first limiting unit 11122 is not easy to slip out from the embedded part 1211 when it rotates and moves. .
  • the length of the fitting part 1211 in the direction away from the center of the circle is smaller than the length of the first limiting unit 11122 in the direction away from the center of the circle, so as to ensure that the first limiting unit 11122 is not easy to slip out of the embedded part 1211 when it moves. .
  • the first member 11 further includes an end cap 112 .
  • the second member 12 includes a first stopper portion 123 .
  • the relative positions of the first component 11 and the second component 12 are fixed through the cooperation between the end cover 112 and the first stopper portion 123 .
  • the end cap 112 of the first member 11 is covered at the first stopper portion 123 of the second member 12, and the end cap 112 and the first stopper are connected to each other.
  • the fit of the portion 123 controls the position of the end cap 112 to prevent the end cap 112 from being excessively stuffed into the second member 12 .
  • the second member 12 may include four first stoppers 123, and the distances between every two adjacent first stoppers 123 are the same or approximately the same, so that the cover plate 312 and the first stoppers When the blocking portion 123 is in contact with each other, it maintains a balanced state.
  • the lamp head 1 may further include a positioning unit 13 .
  • the positioning unit 13 includes a first positioning unit 131 and a second positioning unit 132 .
  • the positioning of the first component 11 and the second component 12 is realized through cooperation of the first positioning unit 131 and the second positioning unit 132 .
  • the first positioning unit 131 and the second positioning unit 132 can be connected and matched by snap-fitting.
  • the first positioning unit 131 is located on the first member 31
  • the second positioning member 132 is located on the second member 12 .
  • the second positioning unit 132 can be stuck in the first positioning unit 131 to play a positioning role.
  • the first positioning unit 331 can also be disposed on the second member 12 , while the second positioning unit 132 is disposed on the first member 11 .
  • the first positioning unit 131 can be stuck in the second positioning unit 132 to play a positioning role.
  • the relative fixation of the first member 11 and the second member 12 can be realized, and the relative position of the first member 11 and the second member 12 can be prevented from being changed due to external force. This affects the direction of the light.
  • the first positioning unit 131 includes several continuous or discontinuous positioning positions. turn. Several positioning positions are evenly distributed along the circumferential direction of the second member 12, and the rotation angle between adjacent positioning positions is 5-15 degrees. That is to say, when the first positioning unit 131 rotates from a position matched with one positioning position to a position matched with another adjacent positioning position, the first member 11 rotates at an angle of 5-15 degrees relative to the second member 32 . Preferably, the rotation angle between adjacent positioning positions is 7-12 degrees.
  • the second positioning unit 132 includes a plurality of tooth parts 1211, the positioning position is formed between adjacent tooth parts 1321 (a groove part 1312 is formed between adjacent tooth parts 1311), and the second positioning unit 132 includes The positioning protrusion 1321 can be clamped at the positioning position (groove 1312 ), so as to complete the positioning.
  • the positioning protrusion 1321 can be disposed on the first stopper 123 .
  • the above positioning method has simple structure, convenient assembly and high positioning reliability.
  • the second member 12 may further include a fixing portion 125 .
  • the fixing part 125 Through the function of the fixing part 125 , the power board is locked in the groove of the fixing part 125 , and it is difficult to be displaced.
  • the second member 12 may include two or more fixing parts 125 .
  • the second member 12 may also include a second stop portion 124 . Through the function of the second stop portion 124, the power board will not be inserted into the lamp holder excessively.
  • the second member 12 may include two or more second stop portions 124 .
  • the number of the second stop portion 124 may be the same as or different from the number of the fixing portion 325 .
  • the distance from the end of the second stopper 124 close to the second rotating member 121 to the second rotating member 121 is greater than the protrusion thickness of the first rotating member 111, so that when the first rotating member 111 rotates, the first limiting member will not touch. to the power board without being limited by the power board to the range of rotation.
  • the second structure 12 may further include one or more support portions 126 .
  • the strength of the lamp head can be enhanced.
  • the first member 11 is disposed at the end of the second member 12 , and the first member 11 does not exceed the range defined by the second member 12 in the length direction of the lamp cap 1 . Therefore, when covering the entire LED straight tube lamp with film, the protective film can completely cover the radially outer side of the lamp cap 1 and cover the joint between the lamp cap 1 and the lamp tube, so as to improve the moisture-proof performance. In some embodiments, the protective film only covers the radially outer side of the lamp cap 1 . In some embodiments, the protective film covers the radially outer side of the lamp cap 1 and a part of the end surface of the lamp cap 1 , but does not cover the first member 11 .
  • the protective film covers the radially outer side of the lamp cap 1, a part of the end surface of the lamp cap 1 and a part of the end surface of the first member 11. At this time, when the first member 11 rotates relative to the second member 12, it only needs to overcome Smaller resistance caused by the protective film to the first member 11 .
  • the lamp base 1 is suitable for LED straight tube lamps (not shown).
  • a power supply is provided inside the lamp holder 1 (at least a part of the power supply overlaps with the lamp holder 1 in the radial projection of the LED straight tube lamp), and the power supply and the light source are electrically connected through the lamp board.
  • the power supply in this embodiment extends along the length of the lamp tube The length of the direction is not greater than the inside of the lamp cap 1.
  • the power supply can be an integral single unit (for example, the power supply modules are all integrated into one component and installed in one of the lamp holders 1).
  • the power supply can also be divided into two parts, which are called double bodies (that is, all power modules are respectively arranged in two parts), and the two parts are respectively arranged in the lamp caps 1 at both ends of the lamp tube.
  • the power supply includes a power supply circuit board carrying a power supply module, and the power supply and the conductive pin 2 are connected by wires.
  • the first positioning unit may be located around the second rotating member of the second member, and on a side close to/away from the lamp tube.
  • the second positioning unit may be located on the first rotation member. The positioning effect is achieved through the cooperation of the first positioning unit and the second positioning unit.
  • the second member 12 of the lamp cap 1 may include a plurality of second positioning portions 123 .
  • the lamp head 1 may include a self-locking unit 14 , and the self-locking unit 14 connects the first component 11 and the second component 12 .
  • the self-locking unit 14 is in contact with the second positioning part 123, through the interaction between the second positioning part 123 and the self-locking unit 14, the first member 11 of the lamp cap 1 can be positioned and fixed after being rotated by a certain angle relative to the second member 12 , and will not easily rotate and shift.
  • the self-locking unit 14 may include a control member 141 , a positioning member 142 , and an elastic member 143 .
  • the control member 141 is connected with the positioning member 142 .
  • a part of the control member 141 is exposed outside the lamp cap 1 and can be used for operation.
  • the positioning member 142 is connected with the elastic member 143 .
  • the positioning member 142 is in contact with the elastic member 143 , and due to the elastic effect of the elastic member 143 , the positioning member 142 can be reset after the external force is removed. Further, a part of the control member 141 can pass through the first member 11 to be connected with the positioning member 142 .
  • the elastic member 143 can be sleeved on one end of the positioning member 142 to make the connection more tightly and not easy to fall off.
  • the second positioning portion 123 cooperates with the positioning member 141 to play a positioning role.
  • the positioning member 142 may have a first state and a second state. Specifically, when the positioning member 142 is in the first state, the control member 141 is stressed, and the positioning member 142 is linked; , and due to the elastic action of the elastic member 143 , the positioning member 142 bounces back.
  • the positioning member 142 is in the second state, the control member 141 is positioned and engaged with the positioning member 141 .
  • the positioning member 142 can move between the second positioning portions 123 and can straddle one or more second positioning portions 123 , thereby having the effect of rotating the lamp head 1 .
  • the positioning member 142 When the positioning member 142 is in the second state, the positioning member 142 cooperates with the second positioning portion 123 (specifically, the position can be limited by buckling, fitting, etc.), so as to limit the rotation of the lamp head 1 .
  • the second positioning part 123 can be a groove part, and the groove part can accommodate at least a part of the positioning member 142, so that the positioning member 142 is fixed, and plays a position-limiting role.
  • the second positioning part 123 can be a protrusion, and the positioning member 142 can have a groove, and the groove part can accommodate the second positioning part 123 or at least a part of the second positioning part 123, so that To the role of fixing and limiting.
  • the control member 141 may also have an operating member 1413 .
  • the first member 11 may have a first accommodating space 1134 for accommodating the operating member 1413 .
  • the accommodating space of the first accommodating space 1134 is larger than the size of the operating member 1413 so that the operating member 1413 can move in the first accommodating space 1134 .
  • the shape and size of the first accommodating space 1134 are larger than the size of the operating member 1413 in the moving direction of the operating member 1413, so that the operating member 1413 can move in its moving direction. After the lamp cap 1 is fully assembled, the operating member 1413 is snapped into the first accommodating space 1134 .
  • the end surface of the operating member 1413 is exposed outside the lamp cap 1 , and is in a plane or not with the surface of the end cover 112 of the first member 11 away from the lamp tube.
  • the total length of the lamp cap will not be lengthened by the operating member 1413, so that the lamp tube will be affected by the lamp cap during installation.
  • the length becomes longer and causes inconvenience; when the face of the end cap 112 of the first member 11 facing away from the lamp tube side of the operating member 1413 is in a raised state, it is more convenient to control the operating member 1413; when the operating member 1413 is opposite to the first member When the surface of the end cap 112 of 11 that is away from the lamp tube is in a recessed state, it can more effectively prevent misoperation caused by accidentally touching the operation member 1413 , thereby preventing unnecessary rotation of the lamp cap 1 .
  • the operating member 1413 can be in a convex state or in a concave state relative to the surface of the end cap 112 of the first member 11 away from the lamp tube.
  • the operating member 1413 may be a rough surface, and the surface may also have a structure for increasing resistance, so that it is easier to complete the operation of the control member 141 by operating the operating member 1413 .
  • the positioning member 142 moves in a direction perpendicular or substantially perpendicular to the axis of the lamp tube, that is, the moving direction is parallel or substantially parallel to the longitudinal section of the lamp cap 1 .
  • the elastic member 143 can be disposed at an end of the positioning member 142 opposite to the contact position of the second positioning portion 123 . Because the shape and size of the first accommodating space 1134 is larger than the size of the operating member 1413 in the moving direction of the operating member 1413, the positioning member 142 can face the lamp head in the direction perpendicular to the axis of the lamp head 1 after receiving the linkage action of the control member 141. 1 axis to move.
  • the positioning member moves in a direction parallel or substantially parallel to the axis of the lamp tube, that is, the moving direction is perpendicular or substantially perpendicular to the cross-section of the lamp cap.
  • the elastic member can be sleeved on the end of the positioning member close to the lamp tube.
  • the shape and size of the first accommodating space are larger than the size of the operating member in the moving direction of the operating member.
  • the first member 11 may include a plurality of first marks 116 , and the first marks 116 may be used to mark the rotation span, that is, the relative rotation angle of the first member 11 relative to the second member 12 .
  • the first marks 116 can be used to mark a rotation span of one unit. The distance between two adjacent first marks 116 is equal.
  • the central angles of the two adjacent first marks 116 relative to the lamp cap 1 are the same or substantially the same as the central angles of the two adjacent second positioning portions 123 .
  • the second member 12 may include a second mark 127 . The first mark 116 and the second mark 127 work together to indicate the rotation of the first member 11 relative to the second member 12 .
  • the first mark 116 may be an Arabic numeral mark, a Roman mark, an English letter mark, a dot mark, and the like.
  • the arcs where any two adjacent second positioning parts 123 are located have the same central angle relative to the center of the circle. It is 20° ⁇ 40°. That is, after the lamp cap 1 rotates an adjacent first mark 116, it rotates 20°-40°; preferably, after the lamp cap 1 rotates one unit, it rotates 25°-35°; more preferably, the lamp cap 1 rotates an adjacent After the unit, turn 30°. Specifically, the distances between any two adjacent second positioning portions 123 are the same or approximately the same, and at least except for the two outermost second positioning portions 123, the other second positioning portions 123 have the same or approximately the same size.
  • the two outermost second positioning portions 123 are the same or different in size from the other second positioning portions 123 . Further, except for the two outermost second positioning portions 123 , the distance between one side of any second positioning portion 123 for positioning the positioning structure 142 and the same side of its adjacent second positioning portion 123 is the same or substantially the same.
  • any second positioning part 123 is used to define a central angle of an arc formed by one side of the positioning structure 142 and a point on the same side of the adjacent second positioning portion 123 as 20° ⁇ 40°. That is, after the lamp cap 1 rotates an adjacent first mark 116, it rotates 20°-40°; preferably, after the lamp cap 1 rotates one unit, it rotates 25°-35°; more preferably, the lamp cap 1 rotates an adjacent After the unit, turn 30°.
  • the first member 11 may include a third accommodating space 1132 for accommodating the positioning unit 1421 of the positioning member 142 .
  • the first member 11 may include a third rotating member 115 .
  • the third rotating member 115 cooperates with the second positioning portion 123 of the second member 12 .
  • the third rotating member 115 is disposed inside the second positioning portion 123 for rotation.
  • the positioning member 142 may further include a positioning unit 1421 .
  • the positioning unit 1421 may include a first positioning portion 14211 . After assembly, at least a part of the positioning unit 1421 is exposed to the third rotating member 115 under no external force, and the exposed part is the first positioning portion 14211 .
  • the positioning member 142 moves, and the first positioning portion 14211 is placed inside the third rotating member 115 and is not exposed to the third member 115 . That is, the first positioning portion 14211 is hidden in the third rotating member 115 , so that the rotation of the rotating member 114 is not hindered, so that the lamp head 1 can be rotated.
  • the length L 1 of the first positioning portion 14211 is less than/equal to the absolute value of the difference between the distance r 1 from the edge of the second positioning portion 123 near the edge of the lamp cap 1 to the center of the lamp cap 1 and the radius r 2 of the end cap 112, namely: L 1 ⁇
  • the material of the first positioning portion 14211 can be a material with certain strength, such as plastic. If the control member 141 of the self-locking unit 14 is not adjusted, if the lamp head 1 is turned forcibly, bending stress will be generated at the contact portion between the first positioning portion 14211 and the second positioning portion 123 . The side of the first positioning part 14211 in contact with the second positioning part 123 generates compressive stress, and the other side of the first positioning part 14211 generates tensile stress. Because the first positioning part 14211 has a certain strength, the first positioning The part 14211 is less prone to bending deformation.
  • the critical force of the first positioning part 14211 is related to the length. Due to the principle of leverage, under the same external force, the longer the first positioning portion 14211 is, the easier it is to bend, deform, or even break. Therefore, in order to maintain the stability of the first positioning part 14211, the length L 1 of the first positioning part 14211 is less than/equal to half of the total length of the positioning unit 1421, that is, L 1 ⁇ L 2 /2; preferably, L 1 ⁇ L 2 /3; better L 1 ⁇ L 2 /4.
  • the critical size of the first positioning part 14211 is related to the cross-sectional shape and dimension.
  • the first member 11 may include a second accommodating space 1131 for accommodating the elastic member 143 .
  • the shape of the second accommodation space 1131 corresponds to the shape of the elastic member 143 .
  • the second accommodating space 1131 can be in the shape of a groove, in which at least part of the elastic member 143 is accommodated; or in the shape of a hole, in which at least a part of the elastic member 143 is accommodated.
  • a part of the elastic member 143 can be placed in the second accommodating space 1131 , and a part can be placed outside the second accommodating space 1131 ; or it can be completely placed in the second accommodating space 1131 .
  • the second accommodating space 1131 is groove-shaped, the opening distance on the longitudinal section of the lamp cap 1 is smaller than the diameter of the elastic member 143 so that the elastic member 143 will not slip out of the second accommodating space 1131 .
  • the control member 141 may include a first connection member 1411
  • the positioning member 142 may include a second connection member 1422
  • the first member 11 may include a fourth accommodating space 1133 .
  • the fourth accommodating space 1133 can be in an open shape, so that the first connecting member 1411 can pass through the first member 11 and be connected with the second connecting member 1422 .
  • the control member 141 is connected to the positioning member 142 through the connection of the first connection member 1411 and the second connection member 1422 . Further, the first connecting member 1411 can protrude in a direction away from the end cover 112 of the lamp cap 1 .
  • the second connection member 1422 may further have a second connection unit 14221 .
  • the second connection unit 14221 may be an opening. When connected, the first connecting member 1411 is inserted into the second connecting unit 14221 of the second connecting member 1422 to connect the control member 141 with the positioning member 142 .
  • the first connecting member 1411 may include an elastic arm 14111 .
  • the connection between the control member 141 and the positioning member 142 is more convenient and firm. Specifically, there is a gap between the elastic arms 14111 , and when assembled, the elastic arms 14111 are close to each other due to the force of extrusion, and are snapped into the positioning member 142 . Afterwards, the external force is eliminated, and the elastic arm is reset due to the elastic action, so that the control member is not easy to fall out from the positioning member 142 .
  • the end of the first connecting member 1411 may further include a fixing member 1412 , through the fixing function of the fixing member 1412 , the control member 141 is not easy to slip out of the positioning member 142 .
  • the edge of the fixing member 1412 may have a third fitting portion 14121 . Through the function of the third fitting portion 14121 , when the control member 141 is assembled with the positioning member 142 , the control member 141 is more easily snapped into the positioning member 142 .
  • the third fitting portion 14121 may have a chamfered surface or an arc surface, or any other structure that is easy to buckle.
  • the first connecting member may have a connecting unit, and further, the connecting unit may have an opening.
  • the second connection member may protrude toward a direction away from the lamp tube.
  • the end of the second connecting member may also include a fixing member, and through the fixing function of the fixing member, the positioning member is not easy to slip out of the control member.
  • the edge of the fixing member may have a third fitting portion. Through the function of the third fitting part, when the control component and the positioning component are assembled, the positioning component is more easily snapped into the control component.
  • the third fitting portion may have a chamfered surface or an arc surface, or any other structure that is easy to buckle.
  • the positioning member 142 may further include a third connecting member 1423 .
  • the diameter of the tail end of the third connecting member 1423 may be smaller than the inner diameter of the portion close to the second connecting member 1422 , so as to facilitate the sheathing of the elastic member 143 .
  • the first member 11 may further include a blocking portion 114 , and the blocking portion 114 may be made of non-metallic material, such as plastic, plastic, and the like.
  • the blocking portion 114 is located on a side of the first member 11 close to the lamp tube. Specifically, the blocking portion 114 is located between the two holes of the two hollow conductive needles 2 .
  • the height of the blocking portion 114 in the axial direction of the lamp tube is equal to or smaller than the thickness of the third rotating member 115 in the axial direction of the lamp tube.
  • the blocking portion 114 extends toward the center of the lamp cap 1 in a direction perpendicular to the axis of the lamp tube.
  • the blocking part 114 is made of non-metallic material, has no conductivity, and has a certain width and thickness, it is in a raised shape relative to the end cover 112, has a height difference with the end cover 112, and is located between the two hollow conductive pins 2 Between the holes, the creepage distance between the two hollow conductive pins 2 can be increased to prevent a short circuit caused by insufficient creepage distance. At the same time, the effect of strengthening the hole of the hollow conductive needle 2 and the structural strength of the entire first member 11 can be achieved.
  • the lamp cap can be a plastic lamp cap
  • the lamp cap can be an all-metal lamp cap
  • an insulating member is provided inside
  • the first positioning The unit includes several continuous or discontinuous positioning positions
  • severeal positioning positions are evenly distributed along the circumference of the second component
  • the second component contains a plurality of first stopper parts
  • the second component contains a fixed part
  • the second structure may include one or more supporting parts
  • “the first fixed unit and the second rotating member may be in point contact
  • the first fixing unit and the second rotating member may be in line contact contact
  • the first fixed unit and the second rotating member can be contacted in the form of surface contact
  • the radius of the shape is the same or roughly the same”
  • the edge of the first limiting member can have
  • the lamp cap can be a plastic lamp cap, or it can be all metal, and an insulating member is provided inside.
  • the size of the lamp caps can be the same or different.
  • the first positioning unit includes several continuous or discontinuous positioning positions.
  • the first fixing unit may be in contact with the second rotating member in a form of point contact.
  • the first fixing unit may be in contact with the second rotating member in a form of line contact.
  • first fixing unit and the second rotating member may be in surface contact.
  • the distance from the first surface of the first fixing unit of the first member to the axis of the lamp cap is the same or substantially the same as the radius of the circle of the second rotating member.
  • the edge of the first limiting member may have a first fitting portion, and the first limiting unit matches the second limiting member to form a limiting position for the first positioning unit.
  • the first limiting unit is parallel or approximately parallel to the end face of the lamp cap.
  • the second rotating member of the second member further includes a fitting portion, and the shape of the fitting portion is the same or substantially the same as that of the first limiting unit.
  • the first limiting unit may snap into the fitting portion, and the edge of the first limiting unit may include the second fitting portion.
  • the first component includes an end cap
  • the second component includes a first stopper portion
  • the relative positions of the first component and the second component are fixed through cooperation between the end cap and the first stopper portion.
  • the lamp head can also include a positioning unit, the positioning unit includes a first positioning unit and a second positioning unit, through the cooperation of the first positioning unit and the second positioning unit, the positioning of the first component and the second component can be realized
  • the first component is disposed at the end of the second component, and the first component does not exceed the range defined by the second component in the length direction of the lamp cap.
  • the protective film covers the radially outer side of the base and a part of the end surface of the base, but does not cover the first member. Furthermore, the protective film covers the outer side in the radial direction of the base, a part of the end surface of the base, and a part of the end surface of the first member.
  • the above-mentioned features can be arranged and combined in any way, and used to improve the lamp holder of the LED straight tube lamp.

Abstract

一种 LED 直管灯灯头（1），包括:灯头（1）；灯头（1）上设有用于连接外部电源的空心导电针（2）；灯头（1）包括第一构件（11）、第二构件（12）及定位单元（13），第一构件（11）上设置第一旋转构件（111），第二构件（12）上设置第二旋转构件（121），第一旋转构件（111）与第二旋转构件（121）匹配；定位单元包括第一定位单元（131）和第二定位单元（132），其中，第一定位单元（131）设置于第一构件（11）上，第二定位单元（132）设置于第二构件（12）上，第一定位单元（131）和第二定位单元（132）配合而使第一构件（11）及第二构件（12）的相对位置固定。

Description

一种LED直管灯灯头 技术领域
本发明属于LED照明装置的技术领域，具体地说是涉及一种LED直管灯灯头。
背景技术
LED照明因为具有节能、寿命长等优点而被广泛采用。其中的LED日光灯，俗称直管灯，一般包括灯管、设于灯管内且带有光源的灯板，以及设于灯管两端的灯头，灯头内设有电源，光源与电源之间通过灯板电气连接。其中，光源为多个排布于灯板上的LED直管灯，多个LED直管灯依次沿灯管长度方向排布。
现有技术中的LED直管灯通常包括灯管、灯头、灯板、空心导电针和电源，其中，灯头与灯管固定，电源设于灯头内且与灯板电性电性连接，空心导电针固定在灯头的端面上并用于与外部的灯座连接，灯板粘结固定在灯管的内周面。此种LED直管灯存在以下缺点：灯板粘接固定在灯管内，且灯头与灯管固定，此时，灯板与空心导电针的位置便相对固定，灯头固定到灯座时，则直管灯的出光方向也是固定的。如果灯座、灯头和灯板任一一个的位置具有偏差，则会影响到直管灯的出光方向；现有技术中的LED直管灯的出光方向无法调节，导致其适用范围较小。
现在技术中已经出现了可旋转式灯头，以用于调节出光方向。但现有技术中的可旋转灯头一般在灯的长度方向上，灯头可分为2部分，其中一部分跟灯管固定、一部分可旋转。该种形式的灯头，在需要覆膜的情况时，如果只采用灯管部分覆膜，而不将灯头覆膜，相比整灯覆膜的LED直管灯，该灯管的灯头与灯管之间连接后容易存在缝隙，因而灯管可能存在防潮性差的问题。如果将灯头与灯管一起进行整灯覆膜，灯头可旋转部分也会一起被覆膜，从而导致灯头无法旋转，因此该旋转灯头存在无法整灯覆膜的问题。
综上所述，鉴于现有技术的LED直管灯灯头存在的不足和缺陷，如何设计LED直管灯灯头，来解决LED直管灯整灯覆膜、防潮性差等问题，是亟待本领域技术人员解决的技术问题。
发明内容
在此摘要描述关于本发明的许多实施例。然而所述词汇本发明仅仅用来描述在 此说明书中揭露的某些实施例(不管是否已在权利要求项中)，而不是所有可能的实施例的完整描述。以上被描述为本发明的各个特征或方面的某些实施例可以不同方式合并以形成LED灯或其中一部分。
本发明实施例提供一种新的LED直管灯灯头，以及各个方面的特征，以解决上述问题。
本发明实施例提供一种LED直管灯灯头，包括：
灯头；
所述灯头上设有用于连接外部电源的空心导电针；
所述灯头包括第一构件、第二构件及定位单元，所述第一构件上设置第一旋转构件，所述第二构件上设置第二旋转构件，所述第一旋转构件与所述第二旋转构件匹配；
所述定位单元包括第一定位单元和第二定位单元，其中，所述第一定位单元设置于所述第一构件上，所述第二定位单元设置于所述第二构件上，所述第一定位单元和所述第二定位单元配合而使所述第一构件及所述第二构件的相对位置固定。
附图说明
图1是一立体图，显示本发明一实施例的LED灯灯头；
图2是一示意图，显示本发明一实施例的LED灯灯头；
图3是一截面图，显示本发明一实施例的LED灯灯头的截面结构；
图4是一立体图，显示本发明一实施例的LED灯灯头的第二构件结构；
图5是一截面图，显示本发明一实施例的LED灯灯头的第二构件结构；
图6是一立体图，显示本发明一实施例的LED灯灯头的第一构件结构；
图7是一立体图，显示本发明一实施例的LED灯灯头的第一构件结构；
图8是一立体图，显示本发明一实施例的LED灯灯头的第一构件结构；
图9是一截面图，显示本发明一实施例的LED灯灯头的截面结构；
图10是一立体图，显示本发明一实施例的LED灯灯头；
图11是一立体图，显示本发明一实施例的LED灯灯头的自锁单元的控制构件；
图12是一截面图，显示本发明一实施例的LED灯灯头的截面结构；
图13是一立体图，显示本发明一实施例的LED灯灯头的第二构件结构；
图14是一立体图，显示本发明一实施例的LED灯灯头的第一构件结构和自锁单元；
图15是一立体图，显示本发明一实施例的LED灯灯头的第一构件结构和自锁单元；
图16是一立体图，显示本发明一实施例的LED灯灯头的第一构件结构；
图17是一立体图，显示本发明一实施例的LED灯灯头的第一构件结构；
图18是一立体图，显示本发明一实施例的LED灯灯头的第一构件结构。
具体实施方式
为了便于理解本发明，下面将参照相关附图对本发明进行更全面的描述。附图中给出了本发明的较佳实施例。但是，本发明可以通过许多不同的形式来实现，并不限于下面所描述的实施例。相反地，提供这些实施例的目的是使对本发明的公开内容理解的更加透彻全面。下文中关于方向如“轴向方向”、“上方”、“下方”等均是为了更清楚的表明结构位置关系，并非对本发明的限制。在本发明中，所述“垂直”、“水平”、“平行”定义为：包括在标准定义的基础上±10％的情形。例如，垂直通常指相对基准线夹角为90度，但在本发明中，垂直指的是包括80度至100度以内的情形。
如图1、2所示，本发明在一实施例中提供一种LED直管灯灯头组件，该LED直管灯灯头组件包括：灯头1和导电针2。导电针2设置于灯头1上，用于连接外部电源。
灯头1(灯头的主体部分)可以是全金属的，并且可以在金属灯头的内部设置绝缘装置(图未示)，以避免金属灯头1与电源造成电性连接。为达到绝缘效果，灯头1(灯头的主体部分)亦可采用绝缘材料，如塑料。
如图1至3所示，灯头1包括第一构件11和第二构件12。第一构件11包括第一旋转构件111。第一旋转构件111可为1个或多个。第二构件12包括第二旋转构件121。第一旋转构件111与第二旋转构件121相接触，第一构件11和第二构件12通过第一旋转构件111和第二旋转构件121得以连接，并实现第一构件11与第二构件12的可旋转式连接。具体的，第一旋转构件111至少一部分设置于第二旋转构件121的内侧(靠近灯管的一侧)，设置在第二旋转构件121内侧的第一旋转构件111可相对第二旋转构件121发生转动，从而实现第一构件11与第二构件12的相对转动。进一步，第一旋转构件111可卡设在第二旋转构件121上，并在第二旋转构件121的周侧上发生移动。第一旋转构件111可与第二旋转构件121贴合设置，从而使得旋转更加顺畅。
如图3、5至7所示，本实施例中包括2个第一旋转构件111。进一步，第一旋转构件111 可包含第一固定单元1111。第一固定单元1111与第二旋转构件121配合，用于转动。进一步，第一旋转构件111还可包含一第一限位结构1112。通过第一限位结构1112与第二旋转结构121的配合，使第一旋转构件111与第二旋转构件121连接，并使两者不易发生脱落、分离。
本实施例中，第一旋转构件111向远离导电针2的方向凸起，形成第一固定单元1111。第二构件12的第二旋转构件121可呈孔状或大致孔状。进一步，第二旋转构件121可呈一圆形的孔或大致圆形的孔。第一固定单元1111至第二旋转构件121的圆心的距离与第二旋转构件121的半径相同或大致相同。在装配时，第一固定单元1111与第二旋转构件121相接触，从而使第一固定单元1111与第二旋转构件121的位置固定，并达到可以进行相对转动的效果。
一些实施例中，第一固定单元1111与第二旋转构件121可采用点接触的形式进行接触。一些实施例中，第一固定单元1111与第二旋转构件121可采用线接触的形式进行接触，以增加第一固定单元1111与第二旋转构件121的接触，从而提高第一固定单元1111与第二旋转构件121之间的稳定性。一些实施例中，第一固定单元1111与第二旋转构件121可采用面接触的形式进行接触，进一步增加第一固定单元1111与第二旋转构件121的接触，提高第一固定单元1111与第二旋转构件121之间的稳定性。
本实施例中，第一固定单元1111与第二旋转构件121可采用面接触的形式进行接触。具体的，第一固定单元包括第一面11111和第二面11112。第一面11111为远离灯头1轴心的面，第二面11112为靠近灯头1轴心的面。第一面11111与第二旋转构件121配合并相接触，具有接触面。具体的，第一面11111可为一圆弧面，弧面的弧度与第二旋转构件121的弧度相同或大致相同，使第一固定单元1111与第二旋转构件121具有较大的接触面积，从而提高第一固定单元1111与第二旋转构件121之间的稳定性。
进一步，从灯头1的横截面方向看，第一构件11的第一固定单元1111的第一面11111到其灯头1轴心的距离与第二旋转构件121的圆形的半径相同或大致相同，从而使第一旋转构件111卡进第二旋转构件121中，并且使第一固定单元1111与第二旋转构件121具有接触面，从而让第一构件11与第二构件12可以进行相对转动。
如图3至7所示，第一旋转构件111还包括第一限位构件1112。第一限位结构1112与第二旋转结构121配合，用于使第一构件11与第二构件12相对固定，并使第一构件11不易与第二构件12脱落、分离。具体的，在将第一构件11和第二构件12组装后，第一限位构件1112设置于第二构件12的内侧，即相对于第二旋转构件121远离导电针2的一侧。第一限位构件1112可为第一固定单元1111边缘的延伸部分。进一步，第一限位构件1112可为第一 固定单元1111边缘朝向远离第二旋转构件121的圆心方向的延伸部分。具体的，在将第一构件11和第二构件12组装后，第一限位构件1112卡设于第二旋转结构121的内侧，通过第一限位结构1112与第二旋转结构121配合，使第一旋转构件111与第二旋转构件121连接，并不易发生脱落、分离。
一实施例中，第一固定单元1111的边缘的第一限位构件1112垂直于或大致垂直灯头1轴方向，即与灯头1的端面平行或大致平行，以使得第一限位构件1112与第二旋转构件121的连接更为紧密。
进一步，第一限位构件1112的边缘可具有第一嵌合部11121。通过第一嵌合部11121的作用，在第一构件11与第二构件12组装时，使第一构件11更为轻易的卡进第二构件12中。第一嵌合部11121可具有一倒角面或一弧面，亦或其他易卡扣的任意形态的结构。
如图3至8所示，多个第一限位构件1112中的任意一第一限位构件1112包括一第一限位单元11122。第二构件12可包括两个第二限位构件122。通过第一限位单元11122与第二构件12的第二限位构件122的作用，限定第一构件11与第二构件12的相对转动，使其不会发生旋转过度的情况。具体的，当第一构件11和所述第二构件12在发生相对转动时，第一限位单元11122在两个第二限位构件122之间转动。因当旋转角度小于160°时，会使出光角度的调整相对局限；当旋转角度大于200°时，会导致制造成本的浪费。优选的，通过第一限位单元11122与第二构件12的第二限位构件121的作用，第一构件11与第二构件12的相对旋转范围为160°～200°；更优的，第一构件11与第二构件12的相对旋转范围为170°～190°。
进一步，第一限位单元11122可为第一限位构件1112的延伸部分。第二构件12可包括两个第二限位构件122，即第一构件11的转动的范围被限定在两个第二限位构件122之间。第一限位单元11122与第二限位构件122匹配，并对第一定位单元11122形成限位，从而起到限位作用，以防止第一构件11相对第二构件12过度旋转而导致导线缠绕或被拉断。具体的，2个第二限位构件122设置在第二构件12远离导电针2的一侧。2个第二限位构件122对向设置。在第一旋转构件111相对第二旋转构件121转动时，第一限位单元11122的移动范围在2个第二限位构件之间的一圆弧上，其圆弧的圆心与第二旋转构件121的圆心相同或大致相同。进一步，从第一限位单元11122的其中一侧与一第二限位构件122的接触点至第一限位单元11122的其中另一侧与另一第二限位构件122的接触点的弧，即第一限位单元11122的最大移动路径。在第一限位单元11122经过最大移动路径时，第一限位单元11122的其中一侧，可旋转160°～200°；优选的，可旋转170°～190°。假设，第一限位单元11122 在灯头1的横截面方向上，远离圆心方向上的长度为a；第一限位构件1112在灯头1的横截面方向上的长度为b；第二限位构件122距离第二旋转构件121的最短距离为c，则a+b＞c，从而能使第二限位构件与第一限位单元11122作用，起到阻挡效果。同时b＜c，从而能使第一构件31与第二构件12在发生相对转动时，不因第二限位构件122的限制作用，而导致无法进行相对转动。即，a、b、c之间始终满足b＜c＜a+b的关系。第一限位单元11122平行或大致平行于灯头1的端面。以灯头1端面的中心点为圆心，第一限位单元11122在周方向的长度与第一限位构件1112在周方向的长度相同或不相同。优选的，第一限位单元11122在周方向的长度小于第一限位构件1112在周方向的长度，从而在节约材料成本的同时，起到限位作用。
如图3至8所示，第二构件12的第二旋转构件121还包含一嵌合部1211。第一限位单元11122能卡进嵌合部1211中，从而使得第一构件11卡进第二构件12中。
嵌合部1211的形状与第一限位单元11122的形状相同或大致相同。因此，在组装时，第一限位单元11122可以卡进嵌合部1211中。第一限位单元11122的边缘可包括第二嵌合部11123，使第一限位单元11122更容易的卡入嵌合部1211中。一实施例中，嵌合部1211还可具有一凸起部12111，通过凸起部12111的限制作用，从而能保证第一限位单元11122移动时，不易从嵌入部1211处滑出脱落。在其他实施例中，凸起部12111位于第一限位单元11122上，通过凸起部12111的限制作用，从而能保证第一限位单元11122旋转移动时，不易从嵌入部1211处滑出脱落。
一实施例中，嵌合部1211远离圆心方向上的长度小于第一限位单元11122远离圆心方向上的长度，从而能保证第一限位单元11122移动时，不易从嵌入部1211处滑出脱落。
如图3至9所示，第一构件11还包含一端盖112。第二构件12包含第一止挡部123。通过端盖112和第一止挡部123的配合，以固定第一构件11与第二构件12的相对位置。具体的，在第一构件11与第二构件12连接时，将第一构件11的端盖112盖设于第二构件12的第一止挡部123处，通过端盖112与第一止挡部123的配合，控制端盖112的位置，以防止端盖112被过度的塞进第二构件12内。一实施例中，第二构件12可包括4个第一止挡部123，并且每两个相邻的第一止挡部123相隔的距离相同或大致相同，从而使盖板312与第一止挡部123接触配合时，保持平衡状态。
如图3至8所示，灯头1还可包含一定位单元13。定位单元13包含第一定位单元131和第二定位单元132。通过第一定位单元131和第二定位单元132的配合，从而实现第一构件11和第二构件12的定位。具体的，在第一构件11与第二构件12组装后，第一定位单元 131和第二定位单元132可通过卡接的方式进行连接配合。其中第一定位单元131位于所述第一构件31上，第二定位构件132位于所述第二构件12上。此时，第二定位单元132可卡在第一定位单元131中，从而起到定位作用。其他实施例中，第一定位单元331也可设置于所述第二构件12上，而第二定位单元132设置于所述第一构件11上。此时，第一定位单元131可卡在第二定位单元132中，从而起到定位作用。通过第一定位单元131和第二定位单元132配合，可实现第一构件11和第二构件12的相对固定，可防止因外力作用，而改变第一构件11及第二构件12的相对位置，从而影响出光的方向。
如图4、6～9所示，第一定位单元131包括若干连续或者不连续的定位位置，第二定位单元132卡于所述定位位置时，限制第一构件11与第二构件12的相对转动。若干定位位置沿第二构件12周向均匀分布，相邻的定位位置之间的旋转角度为5～15度。也就是说，当第一定位单元131与一定位位置配合的位置，转动至与另一相邻的定位位置配合的位置时，第一构件11相对第二构件32转动角度为5～15度。优选的，相邻的定位位置之间的旋转角度为7～12度。本实施例中，第二定位单元132包括若干齿部1211，相邻的齿部1321之间形成所述定位位置(相邻的齿部1311之间形成槽部1312)，第二定位单元132包括定位凸部1321，定位凸部1321可卡设于所述定位位置(槽部1312)，从而完成定位。定位凸部1321可设置在第一止档部123上。上述的定位方式，结构简单，组装方便，定位可靠性高。
如图5、6所示，第二构件12还可包含固定部125。通过固定部125的作用，使电源板卡在固定部125的凹槽内，不易发生移位。具体的，第二构件12可包含2个或多个固定部125。第二构件12还可包含第二止挡部124。通过第二止挡部124的作用，使电源板不会过度插入灯头内。具体的，第二构件12可包含2个或多个第二止挡部124。第二止挡部124的数量可与固定部325的数量相同或不同。第二止挡部124靠近第二旋转构件121的一端至第二旋转构件121的距离大于第一旋转构件111的凸起厚度，使得第一旋转构件111旋转时，第一限位构件不会接触到电源板，而不会被电源板限制旋转范围。
如图5所示，第二结构12还可包含一个或多个支撑部126。通过支撑部126的作用，能使灯头的强度增强。
如图9所示，第一构件11设置于第二构件12的端部，且第一构件11在灯头1的长度方向上不超出第二构件12所限定的范围。因此，在LED直管灯整灯覆膜时，保护膜可完全包覆灯头1的径向的外侧，并覆盖灯头1与灯管的连接处，以提升防潮性能。一些实施例中，保护膜仅覆盖灯头1的径向的外侧。一些实施例中，保护膜覆盖灯头1的径向的外侧及灯头1的端面的一部分，但不覆盖第一构件11。一些实施例中，保护膜覆盖灯头1的径向的外侧、 灯头1的端面的一部分及第一构件11的端面的一部分，此时，第一构件11相对第二构件12转动时，仅需克服较小的因保护膜对第一构件11造成的阻力。
一实施例中，灯头1适用于LED直管灯(图未示)。灯头1内设有电源(电源至少一部分在LED直管灯的径向的投影与灯头1重叠)，电源和光源通过灯板电性连接，优选的，本实施例中的电源在灯管长度延伸方向的长度不大于灯头1内。电源可以是一个整体的单一单元(例如，电源模组皆集中在一个部件中，并设于其中一个灯头1内)。或者电源也可以分为两部分，称为双个体(即所有电源模组分别设置在两个部件中)，并将两部分分别设于灯管两端的灯头1中。一实施例中，电源包括载有电源模组的电源电路板，电源和导电针2通过导线连接。
一实施例中(图未示)，第一定位单元可位于第二构件的第二旋转构件的周围，并处于靠近/远离灯管方向的一侧。第二定位单元可位于第一旋转构件上。通过第一定位单元和第二定位单元配合，起到定位效果。
如图10～18所示，一实施例中，灯头1的第二构件12可包括多个第二定位部123。灯头1可包括自锁单元14，自锁单元14连接第一构件11与第二构件12。自锁单元14与第二定位部123相接触，通过第二定位部123和自锁单元14的相互作用，使灯头1的第一构件11相对第二构件12旋转一定角度后，可进行定位固定，且不会轻易发生转动、偏移。
自锁单元14可包括控制构件141、定位构件142、弹性构件143。控制构件141与定位构件142相连接。控制构件141的一部分露出于灯头1的外部，可用于操作。定位构件142与弹性构件143相连接。通过控制构件141的移动，联动定位构件142进行移动。定位构件142与弹性构件143接触，因弹性构件143的弹性作用，在外力消除后，能使定位构件142复位。进一步，控制构件141的一部分可穿过第一构件11，与定位构件142进行连接。弹性构件143可套设于定位构件142的一端，以使得连接更为紧密，不易脱落。
第二定位部123与定位构件141配合，起到定位作用。根据控制构件141的作用，定位构件142可具有第一状态和第二状态。具体的，当定位构件142处于第一状态时，控制构件141受力，联动定位构件142；当定位构件142处于第二状态时，控制构件141不受力，定位构件142不受到控制构件141联动，并因为弹性构件143的弹性作用，使定位构件142弹回。当定位构件142处于第二状态时，控制构件141与定位构件141定位配合。当定位构件142处于第一状态时，定位构件142可在第二定位部123之间移动，并且能够跨越一个或者多个第二定位部123，从而起到使灯头1转动的效果。当定位构件142处于第二状态时，定位构件142与第二定位部123相配合(具体可通过卡扣、嵌合等方式进行限位)，从而起到限制灯头1转动的效果。具体的，第 二定位部123可为一凹槽部，凹槽部能容置定位构件142的至少一部分，从而使定位构件142固定，起到限位作用。在其他实施例中，第二定位部123可为一凸起，定位构件142可带有一凹槽，凹槽部能容置定第二定位部123或第二定位部123的至少一部分，从而起到固定、限位的作用。
如图13至17所示，通过该自锁单元14与第二定位部123的配合的转动方式，因第三旋转构件115无齿结构，第一构件11与第二构件12组装时，第一构件11的第三旋转构件115与第二结构12的接触面增多，减少了第一构件11与第二构件12之间的缝隙间隔，所以防潮效果会更好。
如图11、16所示，控制构件141还可具有操作构件1413。第一构件11可具有第一容置空间1134，用于容置操作构件1413。第一容置空间1134的容置空间大于操作构件1413的大小，以使得操作构件1413能在第一容置空间1134内移动。进一步，第一容置空间1134的形状大小在操作构件1413的移动方向上大于操作构件1413的大小，以使得操作构件1413能在其移动方向上移动。在灯头1整体组装后，操作构件1413卡进第一容置空间1134。操作构件1413的端面露出于灯头1的外侧，与第一构件11的端盖112的远离灯管一侧的面处于一平面或不处于一平面。当操作构件1413与第一构件11的端盖112的远离灯管一侧的面处于一平面时，灯头的长度总长度不会因操作构件1413而变长，以导致灯管在安装时因灯头长度变长而产生不便；当操作构件1413相对第一构件11的端盖112的远离灯管一侧的面处于凸起状态时，控制操作构件1413更为方便；当操作构件1413相对第一构件11的端盖112的远离灯管一侧的面处于凹陷状态时，可以更有效的防止误触碰到操作构件1413而导致误操作，从而能防止灯头1发生不必要的转动。操作构件1413相对第一构件11的端盖112的远离灯管一侧的面，可呈凸起状态，也可呈凹陷状态。操作构件1413可为一粗糙的面，其表面上也可具有用于增加阻力的结构，以使得更容易的通过操作操作构件1413，来完成控制构件141的操作。
如图11～15所示，一实施例中，定位构件142在垂直或大致垂直灯管轴方向的方向上进行移动，即移动方向平行或大致平行灯头1的纵截面。弹性构件143可设置于定位构件142与第二定位部123接触部位反向的一端。因第一容置空间1134的形状大小在操作构件1413的移动方向上大于操作构件1413的大小，定位构件142在受到控制构件141的联动作用后，于垂直灯头1的轴方向上，可朝向灯头1的轴方向移动。
一实施例中(图未示)，定位构件在与灯管轴方向平行或大致平行的方向上进行移动，即移动方向垂直或大致垂直灯头的截面。弹性构件可套设于定位构件靠近灯管一端。第一容置空间的形状大小在操作构件的移动方向上大于操作构件的大小，在朝向灯管方向，按压控 制构件后，定位构件会产生联动，并随之朝向灯管的方向移动。每个第二定位部在靠近灯管方向有一间隙，用以在控制构件受到外力按压，并转动灯头1时，因产生联动，定位构件能在第二定位部靠近灯管方向的间隙内移动。
如图10、13所示，第一构件11可包括多个第一标记116，第一标记116可用于标记旋转跨度，即第一构件11相对第二构件12的相对转动的角度。具体的，两个相邻第一标记116可用于标记一个单位的旋转跨度。两个相邻的第一标记116之间的距离相等。进一步，两个相邻的第一标记116相对于灯头1的圆心角与两个相邻的第二定位部123的圆心角相同或大致相同。第二构件12可包括一第二标记127。第一标记116与第二标记127共同作用，以示第一构件11相对第二构件12的转动情况。将灯头1一端转动一定的单位跨度，再将灯头1的另一端的转动相同的单位跨度，通过第一标记116和第二标记127的标识作用，以确保两侧的灯头1旋转了相同的角度，从而保证两侧灯头1上的空心导电针2的保持一致，以使得LED灯的安装得以顺利进行。具体的，当LED灯呈水平状态时，第一标记116的中标记水平的点与第二标记127对齐，且因两个相邻的第一标记116之间的距离相等，从而使得每转动一个单位的旋转跨度后，多个第一标记116中始终有一个第一标记116与第二标记127对齐。第一标记116可以为阿拉伯数字标记、罗马字标记、英文字母标记、点标记等。
如图10、12、13所示，从灯头1的纵切面方向看，以灯头1的中心为圆心，任意两个相邻的第二定位部123所在的弧相对圆心的圆心角相等，圆心角为20°～40°。即，灯头1转动一个相邻的第一标记116后，转动20°～40°；优选的，灯头1转动一个单位后，转动25°～35°；更优的，灯头1转动一个相邻的单位后，转动30°。具体的，任意两个相邻的第二定位部123相隔的距离相同或大致相同，且至少除最外侧的两个第二定位部123以外，其他的第二定位部123的大小相同或大致相同，以使得定位构件142转动任意一个相邻的单位后，灯头1转动的角度相同或大致相同。最外侧的两个第二定位部123与其他第二定位部123的大小相同或不同。进一步，除最外侧的两个第二定位部123外，任意一第二定位部123用于定位定位结构142的一侧与其相邻的第二定位部123的相同侧的距离相同或大致相同。从灯头1的纵切面方向看，以灯头1的中心为圆心，灯头1的中心点到任意第二定位部123用于限定定位结构142的一侧的距离为半径，则任意一第二定位部123用于限定定位结构142的一侧与其相邻的第二定位部123的相同侧的点所形成的弧的圆心角为20°～40°。即，灯头1转动一个相邻的第一标记116后，转动20°～40°；优选的，灯头1转动一个单位后，转动25°～35°；更优的，灯头1转动一个相邻的单位后，转动30°。
如图13、14、15、17、18所示，第一构件11可包括一第三容置空间1132，第三容置空间1132用于容置定位构件142的定位单元1421。第一构件11可包括一第三旋转构件115。第三旋转构件115与第二构件12的第二定位部123相配合。具体的，第三旋转构件115设置于第二定位部123的内侧，用于旋转。定位构件142可进一步包括定位单元1421。定位单元1421可包括一第一定位部14211。在组装后，在无外力的作用下，定位单元1421至少一部分露出于第三旋转构件115，露出部分即第一定位部14211。通过第一定位部14211与第二定位部123相作用，起到定位效果。在受到外力作用时，定位构件142发生移动，第一定位部14211置于第三旋转构件115的内部，不露出于第三构件115。即第一定位部14211会隐藏在第三旋转构件115中，从而使旋转构件114的旋转无阻碍，得以使灯头1发生旋转。
第一定位部14211的长度L 1小于/等于第二定位部123靠近灯头1边缘一侧至灯头1圆心的距离r 1与端盖112半径r 2差值的绝对值，即：L 1≤|r 2-r 1|，从而使得第一定位部14211内卡进第二结构12中，以达到旋转/定位效果。
第一定位部14211的材质可为具有一定强度的材质，如：塑料。在未调节自锁单元14的控制构件141的情况下，如果强行转动灯头1，第一定位部14211与第二定位部123的接触部位会产生弯曲应力。第一定位部14211与第二定位部123相接触的一侧产生受压应力，第一定位部14211的另一侧产生受拉应力，因第一定位部14211具有一定的强度，因此第一定位部14211不易发生弯曲变形。
使第一定位部14211弯曲变形的临界力大小与第一定位部14211的材料、长度、截面形状尺寸以及第一定位部14211头的约束情况有关，即：P＝π 2EI/L 2。
在第一定位部14211的材料、截面形状尺寸以及第一定位部14211端头的约束情况都为定量的情况下，第一定位部14211的临界力大小与长度有关。在并且由于杠杆原理，在相同的外力下，第一定位部14211的长度越长，则越容易发生弯曲变形，乃至断裂。因此，为了保持第一定位部14211的稳定性，第一定位部14211的长度L 1小于/等于定位单元1421总长度的一半，即，L 1≤L 2/2；优选的,L 1≤L 2/3；更优的L 1≤L 2/4。
在第一定位部14211的材料、长度以及第一定位部14211端头的约束情况都为定量的情况下，第一定位部14211的临界里大小与截面形状尺寸有关。第一定位部14211的横截面S 1越大，惯性矩越大，第一定位部14211的稳定性越好。因此，为了保持第一定位部14211的稳定性，，第一定位部14211的横截面S 1大于/等于第一定位部14211的纵截面S 2的一半，即：S 1≥S 2/2； 优选的，S 1≥S 2；更优的，S 1≥2S 2。
如图12～15、17、18所示，第一构件11可包括第二容置空间1131，用于容置弹性构件143。第二容置空间1131的形状与弹性构件143的形状相对应。第二容置空间1131可呈槽状，至少部分的弹性构件143容置于其中；也可呈孔洞状，至少部分的弹性构件143容置于其中。弹性构件143可以一部分置于第二容置空间1131，一部分位置于第二容置空间1131之外；也可完全置于第二容置空间1131中。第二容置空间1131呈槽状时，在灯头1的纵切面上的开口距离小于弹性构件143的直径，以使得弹性构件143不会从第二容置空间1131中滑落出来。
如图10、11、14～16所示，控制构件141可包括第一连接构件1411，定位构件142可包括第二连接构件1422，第一构件11可包括第四容置空间1133。第四容置空间1133可为开口状，能使第一连接构件1411穿过第一构件11，并与第二连接构件1422进行连接。通过第一连接构件1411与第二连接构件1422的连接，使控制构件141与定位构件142进行连接。进一步，第一连接构件1411可朝向远离灯头1端盖112的方向凸出。第二连接构件1422可进一步具有第二连接单元14221。第二连接单元14221可以为一开孔部。在连接时，第一连接构件1411插入第二连接构件1422的第二连接单元14221中，使控制构件141与定位构件142进行连接。
第一连接构件1411可包含弹性臂14111。通过弹性臂14111的弹性作用，使得控制构件141与定位构件142的连接更为方便且牢固。具体的，弹性臂14111之间具有缝隙，在组装时，由于受到挤压的力，弹性臂14111相互靠近，被卡进定位构件142中。之后，消除外力，弹性臂因受到弹性作用，从而复位，使得控制构件不易从定位构件142中脱落出来。
第一连接构件1411的末端还可包含固定构件1412，通过固定构件1412的固定作用，使控制构件141不易从定位构件142中滑出。进一步，固定构件1412的边缘可具有第三嵌合部14121。通过第三嵌合部14121的作用，在控制构件141与定位构件142组装时，使控制构件141更为轻易的卡进定位构件142中。第三嵌合部14121可具有一倒角面或一弧面，亦或其他易卡扣的任意形态的结构。
一实施例中(图未示)，第一连接构件可具有一连接单元，进一步，连接单元可带有一开孔部。第二连接构件可朝向远离灯管的方向凸出。在连接时，第二连构件插入第一连接构件的连接单元中，使控制构件与定位构件进行连接。第二连接构件的末端还可包含固定构件，通过固定构件的固定作用，使定位构件不易从控制构件中滑出。进一步，固定构件的边缘可具有第三嵌合部。通过第三嵌合部的作用，在控制构件与定位构件组装时，使定位构件更为 轻易的卡进控制构件中。第三嵌合部可具有一倒角面或一弧面，亦或其他易卡扣的任意形态的结构。
如图15所示，定位构件142可进一步包括第三连接构件1423。第三连接构件1423的尾端的径可小于靠近第二连接构件1422的部分的内径，以便于弹性构件143的套设。
如图10、15～18所示，第一构件11还可包括阻断部114，阻断部114可为非金属材质，如：塑料、塑胶等。阻断部114位于第一构件11的靠近灯管的一侧。具体的，阻断部114位于两空心导电针2的两孔之间。阻断部114在灯管轴方向上的高度等于或小于第三旋转构件115在灯管轴方向上的厚度。阻断部114在垂直灯管轴方向上，朝向灯头1的圆心延伸。因阻断部114为非金属材质，不带有导电性，并具有一定的宽度和厚度，相对于端盖112呈一凸起状，与端盖112具有高度差，且位于两空心导电针2的孔洞之间，所以可以增加两空心导电针2之间的爬电距离，防止因爬电距离不够到导致短路的情况。同时能起到加强空心导电针2的孔洞和整个第一构件11的结构强度的效果。
本发明LED灯灯头于各实施例的实现以如前所述。需要提醒注意的是，在各个实施例中，对于同一个LED灯而言，包扩“灯头可以为塑料灯头”、“灯头可为全金属灯头，并在内部设置绝缘构件”、“第一定位单元包括若干连续或者不连续的定位位置”、“若干定位位置沿第二构件周向均匀分布”、“第二构件包含多个第一止挡部”、“第二构件包含固定部”、“第二结构可包含一个或多个支撑部”、“第一固定单元与第二旋转构件可采用点接触的形式进行接触”、“第一固定单元与第二旋转构件可采用线接触的形式进行接触”、“第一固定单元与第二旋转构件可采用面接触的形式进行接触”、“第一构件的第一固定单元的第一面到其灯头轴心的距离与第二旋转构件的圆形的半径相同或大致相同”、“第一限位构件的边缘可具有第一嵌合部”、“第一限位单元与第二限位构件匹配，并对第一定位单元形成限位”、“第一限位单元平行或大致平行于灯头的端面”、“第二构件的第二旋转构件还包含一嵌合部”、“嵌合部的形状与第一限位单元的形状相同或大致相同”、“第一限位单元可以卡进嵌合部中”、“第一限位单元的边缘可包括第二嵌合部”、“第一构件包含一端盖”、“第二构件包含第一止挡部”、“通过端盖和第一止挡部的配合，以固定第一构件与第二构件的相对位置”、“灯头还可包含一定位单元”、“定位单元包含第一定位单元和第二定位单元”、“通过第一定位单元和第二定位单元的配合，从而实现第一构件和第二构件的定位”、“第一构件设置于第二构件的端部”、“第一构件在灯头的长度方向上不超出第二构件所限定的范围”、“保护膜覆盖灯头的径向的外侧及灯头的端面的一部分，但不覆盖第一构件”、“保护膜覆盖灯头的径向的外侧、灯头的端面的一部分及 第一构件的端面的一部分”等的特征，可以只在实践中单个或一体地应用，使得仅实施一个特征或同时实施若干特征。
例如，在灯头设计中，灯头可以是塑料灯头，也可以是全金属的，并在在内部设置绝缘构件。灯头的尺寸大小可以相同或不相同。
例如，第一定位单元包括若干连续或者不连续的定位位置。
例如，第一固定单元与第二旋转构件可采用点接触的形式进行接触。
例如，第一固定单元与第二旋转构件可采用线接触的形式进行接触。
例如，第一固定单元与第二旋转构件可采用面接触的形式进行接触。
例如，第一构件的第一固定单元的第一面到其灯头轴心的距离与第二旋转构件的圆形的半径相同或大致相同。
例如，第一限位构件的边缘可具有第一嵌合部，第一限位单元与第二限位构件匹配，并对第一定位单元形成限位。
例如，第一限位单元平行或大致平行于灯头的端面。
例如，第二构件的第二旋转构件还包含一嵌合部，嵌合部的形状与第一限位单元的形状相同或大致相同。
例如，第一限位单元可以卡进嵌合部中，第一限位单元的边缘可包括第二嵌合部。
例如，第一构件包含一端盖，第二构件包含第一止挡部，通过端盖和第一止挡部的配合，以固定第一构件与第二构件的相对位置。
例如，灯头还可包含一定位单元，定位单元包含第一定位单元和第二定位单元，通过第一定位单元和第二定位单元的配合，从而实现第一构件和第二构件的定位
例如，第一构件设置于第二构件的端部，第一构件在灯头的长度方向上不超出第二构件所限定的范围。
例如，保护膜覆盖灯头的径向的外侧及灯头的端面的一部分，但不覆盖第一构件。并且，保护膜覆盖灯头的径向的外侧、灯头的端面的一部分及第一构件的端面的一部分。
也就是说，可以将上述特征作任意的排列组合，并用于LED直管灯灯头的改进。
应该理解，以上描述是为了进行图示说明而不是为了进行限制。通过阅读上述描述，在所提供的示例之外的许多实施方式和许多应用对本领域技术人员来说都将是显而易见的。因此，本教导的范围不应该参照上述描述来确定，而是应该参照所附权利要求以及这些权利要求所拥有的等价物的全部范围来确定。出于全面之目的，所有文章和参考包括专利申请和公告的公开都通过参考结合在本文中。在前述权利要求中省略这里公开的主题的任何方面并不 是为了放弃该主体内容，也不应该认为发明人没有将该主题考虑为所公开的发明主题的一部分。

Claims (26)

  1. 述第一限位单元在所述两个第二限位构件之间转动。
  2. 如权利要求11所述的灯头，其特征在于，所述第一限位单元为所述第一限位构件的延伸部分。
  3. 如权利要求1所述的灯头，其特征在于，包括第一定位单元和第二定位单元，所述第一定位单元位于所述第一构件上，所述第二定位构件位于所述第二构件上，在所述第一构件11与所述第二构件12组装后，所述第二定位单元卡在所述第一定位单元中。
  4. 如权利要求13所述的灯头，其特征在于，所述第一定位单元包括若干定位位置，第二定位单元卡于所述所述定位位置中。
  5. 如权利要求14所述的灯头，其特征在于，所述第一定位单元包括若干连续的定位位置。
  6. 如权利要求1所述的灯头，其特征在于，所述第一构件设置于所述第二构件的端部，且所述第一构件在所述灯头的长度方向上不超出所述第二构件所限定的范围。
  7. 如权利要求1所述的灯头，其特征在于，保护膜仅覆盖所述灯头的径向的外侧。
  8. 如权利要求1所述的灯头，其特征在于，保护膜覆盖所述灯头的径向的外侧及所述灯头的端面的一部分，但不覆盖所述第一构件。
  9. 如权利要求1所述的灯头，其特征在于，包括自锁单元，所述自锁单元连接所述第一构件与所述第二构件。
  10. 如权利要求20所述的灯头，其特征在于，所述第二构件包括多个第二定位部，所述自锁单元与所述第二定位部相接触。
  11. 如权利要求20所述的灯头，其特征在于，所述自锁单元包括控制构件、定位构件、弹性构件，所述控制构件与所述定位构件连接，所述控制构件的一部分露出于所述灯头的外部，所述定位构件与弹性构件相连接。
  12. 如权利要求22所述的灯头，其特征在于，所述控制构件的一部分可穿过所述第一构件，与所述定位构件进行连接，所述弹性构件套设于所述定位构件的一端。
  13. 如权利要求22所述的灯头，其特征在于，根据所述控制构件的作用，所述定位构件可具有第一状态和第二状态，当所述定位构件处于所述第一状态时，所述控制构件受力，联动所述定位构件；当所述定位构件处于所述第二状态时，所述控制构件不受力，所述定位构件不受到所述控制构件联动，并因为所述弹性构件的弹性作用，使所述定位构件弹回。
  14. 如权利要求22所述的灯头，其特征在于，当所述定位构件处于所述第一状态时，所述定位构件在第二定位部123之间移动，并且能够跨越多个所述第二定位部。
  15. 如权利要求22所述的灯头，其特征在于，所述第二定位部为一凹槽部，凹槽部能容置所述定位构件的至少一部分。
  16. 如权利要求22所述的灯头，其特征在于，所述第一构件包括一第三旋转构件，所述第三旋转构件设置于第二定位部的内侧。
  17. 如权利要求27所述的灯头，其特征在于，在无外力的作用下，所述定位单元至少一部分露出于所述第三旋转构件。
  18. 如权利要求27所述的灯头，其特征在于，在受到外力作用时，所述定位构件发生移动，所述第一定位部置于所述第三旋转构件的内部，不露出于所述第三构件。
  19. 如权利要求27所述的灯头，其特征在于，所述第一定位部的长度L 1≤所述第二定位部靠近所述灯头边缘一侧至所述灯头圆心的距离r 1与所述端盖半径r 2差值的绝对值，即：L 1≤|r 2-r 1|。
  20. 如权利要求22所述的灯头，其特征在于，所述第一构件可包括第二容置空间，所述第二容置空间可呈槽状，至少部分的所述弹性构容置于所述第二容置空间。
  21. 如权利要求22所述的灯头，其特征在于，所述第一构件可包括第二容置空间，所述第二容置空间可呈孔洞状，至少部分的所述弹性构容置于所述第二容置空间。
  22. 如权利要求22所述的灯头，其特征在于，所述第一构件包括阻断部，所述阻断部为非金属材质，所述阻断部位于所述第一构件的靠近灯管的一侧
  23. 如权利要求33所述的灯头，其特征在于，所述阻断部位于两所述空心导电针的两孔之间，所述阻断部在垂直灯管轴方向上，朝向所述灯头的圆心延伸。
  24. 如权利要求1所述的灯头，其特征在于，所述灯头为塑料材质。
  25. 如权利要求1所述的灯头，其特征在于，所述灯头为金属材质，并在所述灯头内部设置绝缘装置。
  26. 一种LED直管灯，其特征在于，包括权利要求1至37任一项中所述的灯头。
PCT/CN2023/071724 2022-01-13 2023-01-10 一种led直管灯灯头 WO2023134697A1 (zh)

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