Head lamp capable of dynamically dimming based on distance sensing

Abstract

The utility model relates to a head lamp capable of dynamically dimming based on distance induction. The head lamp capable of dynamically dimming based on distance sensing comprises a head lamp main body, a back plate and a braid, the head lamp body comprises a shell, a battery, an LED lamp bead, a distance sensor, a lens, a PCB-A plate and a switch. The back plate is connected with the shell, and a ribbon penetrating hole allowing a ribbon to penetrate is formed in the back plate; the LED lamp beads and the distance sensor are both installed on the same side of the PCB-A board and are both electrically connected with a control circuit on the PCB-A board. The lens is installed on the shell, and the LED lamp bead, the distance sensor and the PCB-A plate are all arranged in an inner space defined by the shell and the lens. The lens comprises a plane mirror, and the transmitting end and the receiving end of the distance sensor face the plane mirror. The head lamp capable of dynamically dimming based on distance induction can automatically switch modes according to the distance between the head lamp and a shielding object in a power-on state, a user does not need to press a key, and mode switching is simple and convenient.

Description

Technical Field

[0001] This utility model relates to the field of lighting equipment technology, specifically to a headlamp based on distance sensing dynamic dimming. Background Technology

[0002] A headlamp is an outdoor lighting tool that typically contains one or more light sources. Headlamps are designed to free the user's hands, providing ample illumination for various activities such as night hiking, camping, fishing, hunting, and work. Traditional multi-source headlamps usually use one or more buttons for control; however, because headlamps have multiple modes, such as low, medium, high, and strobe, some modes require multiple button presses to select, making operation cumbersome and failing to meet the need for convenient switching. Utility Model Content

[0003] In view of the above problems, this utility model is proposed to provide a headlamp based on distance sensing dynamic dimming that overcomes or at least partially solves the above problems.

[0004] The headlamp based on distance-sensing dynamic dimming includes a headlamp body, a back plate, and a webbing. The headlamp body includes a housing, a battery, LED beads, a distance sensor, a lens, a PCB-A board, and a switch. The back plate is connected to the housing and forms a webbing hole for the webbing to pass through. The LED beads and the distance sensor are both mounted on the same side of the PCB-A board and are electrically connected to the control circuit on the PCB-A board. The lens is mounted on the housing, and the LED beads, the distance sensor, and the PCB-A board are all arranged in the internal space surrounded by the housing and the lens. The lens includes a plane mirror, and the transmitting and receiving ends of the distance sensor face the plane mirror.

[0005] The housing includes a main housing and a lens holder. The lens holder has a first slot, and the lens has a first latch that engages with the first slot. The circumferential edge of the lens abuts against the circumferential edge of a first opening formed in the lens holder. The main housing has a second opening and a second slot. The lens holder has a second latch that engages with the second slot. The lens covers the second opening and has an annular portion extending toward the second opening and abutting against the circumferential edge of the second opening. A sealing ring is provided between the annular portion and the edge of the second opening. The light emitted by the LED can pass through the second opening to reach the lens. The physical signal emitted by the distance sensor can pass through the second opening to reach the lens, or the distance sensor extends out of the second opening.

[0006] In one embodiment, the main housing has a positioning hole, and the lens holder has a positioning post that mates with the positioning hole.

[0007] In one embodiment, the back plate has two oppositely arranged mounting seats, and the inner peripheral walls of the mounting seats have a plurality of positioning grooves formed circumferentially; the main housing is located between the two mounting seats, and two rotating shafts extending into the corresponding mounting seats are formed on two opposite sides of the main housing, and positioning protrusions are formed on the outer periphery of the rotating shafts; the headlamp body also includes two damping rings respectively fitted onto the corresponding rotating shafts, the inner ring of the damping ring has a recess that mates with the positioning protrusions, and the outer ring of the damping ring has a plurality of elongated protrusions that mate with the positioning grooves of the mounting seats; the damping ring also has a plurality of holes that provide space for the elongated protrusions to deform inward in the direction of the inner ring.

[0008] In one embodiment, a threaded hole is formed at the center of the free end of the rotating shaft; the headlamp body also includes a bolt that mates with the threaded hole, the head of the bolt being able to abut against the side of the mounting base facing away from the main housing.

[0009] In one embodiment, the elongated protrusions of the damping ring extend axially and are distributed in a ring array.

[0010] In one embodiment, the edges of the cross-section of the elongated protrusion of the damping ring are arc-shaped and symmetrical from left to right.

[0011] In one embodiment, the holes of the damping ring are arranged in a ring array, and the radius of the virtual circle in which all the holes are located is smaller than the radius of the virtual circle in which all the elongated protrusions are located.

[0012] This invention relates to a headlamp based on distance-sensing dynamic dimming. When powered on, it can automatically switch modes according to the distance to obstructions without requiring the user to press a button, making mode switching simple and convenient. Attached Figure Description

[0013] The accompanying drawings, which form part of the specification, are used to provide a further understanding of the embodiments of this application and illustrate the implementation methods of this application, together with the textual description, to explain the principles of this application. Obviously, the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0014] Figure 1 The diagram schematically illustrates a headlamp based on distance-sensing dynamic dimming according to one embodiment of the present invention.

[0015] Figure 2 schematically shown Figure 1 An exploded view of a headlamp with distance-sensing dynamic dimming;

[0016] Figure 3schematically shown Figure 1 A sectional view of the headlamp body;

[0017] Figure 4 schematically shown Figure 3 The main shell in the middle;

[0018] Figure 5 schematically shown Figure 3 Lens mounting base in the middle;

[0019] Figure 6 schematically shown Figure 3 The lens in the middle;

[0020] Figure 7 schematically shown Figure 1 Another state of the headlight based on distance sensing dynamic dimming;

[0021] Figure 8 schematically shown Figure 7 An exploded view of a headlamp with distance-sensing dynamic dimming;

[0022] Figure 9 schematically shown Figure 8 Enlarged view of section A in the middle;

[0023] Figure 10 schematically shown Figure 1 A sectional view of the headlamp body and back panel;

[0024] Figure 11 schematically shown Figure 8 The damping ring in the middle;

[0025] Figure 12 schematically shown Figure 8 Rear view of the damping ring.

[0026] Explanation of reference numerals in the attached drawings: 1. Headlamp body; 2. Back plate; 3. Webbing; 4. Housing; 5. Battery; 6. LED bulb; 7. Distance sensor; 8. Lens; 9. PCB-A board; 10. Switch; 11. Strap hole; 12. Plane mirror; 13. Main housing; 14. Lens mounting base; 15. First slot; 16. First buckle; 17. First opening; 18. Second slot; 19. Second buckle; 20. Second opening; 21. Annular part; 22. Sealing ring; 23. Positioning hole; 24. Positioning post; 25. Mounting base; 26. Positioning groove; 27. Rotating shaft part; 28. Positioning protrusion; 29. ​​Damping ring; 30. Recess; 31. Long strip protrusion; 32. Hole; 33. Threaded hole; 34. Bolt. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below, with examples of the embodiments shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. Those skilled in the art can make various changes, modifications, substitutions, and alterations to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the claims and their equivalents.

[0028] The terms “center,” “longitudinal,” “transverse,” “length,” “upper,” “lower,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “axial,” “radial,” and “circumferential,” mentioned or possibly mentioned in the description of this utility model, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Additionally, the terms "comprising," "including," and any variations thereof are intended to cover non-exclusive inclusion.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] The following description, with reference to the accompanying drawings, describes a headlamp based on distance-sensing dynamic dimming according to an embodiment of the present invention.

[0032] See Figures 1 to 3 A headlamp based on distance sensing dynamic dimming according to an embodiment of the present invention includes a headlamp body 1, a back plate 2, and a webbing 3. The headlamp body 1 includes a housing 4, a battery 5, LED beads 6, a distance sensor 7, a lens 8, a PCB-A board 9, and a switch 10. The back plate 2 is connected to the housing 4, and the back plate 2 forms a webbing hole 11 for the webbing 3 to pass through.

[0033] The LED beads 6 and the distance sensor 7 are both mounted on the same side of the PCB-A board 9 and are electrically connected to the control circuit on the PCB-A board 9. The lens 8 is mounted on the housing 4, and the LED beads 6, the distance sensor 7, and the PCB-A board 9 are all arranged in the internal space surrounded by the housing 4 and the lens 8. The lens 8 includes a plane mirror 12, and the emitting and receiving ends of the distance sensor 7 face the plane mirror 12. The control circuit can control the operation of the LED beads 6 according to the distance information transmitted by the distance sensor 7. For example, the headlamp has modes such as low brightness, medium brightness, and high brightness. When the distance between the headlamp and the obstruction is less than or equal to 50cm, the control circuit controls the LED beads 6 to emit low brightness light (low brightness mode); when the distance between the headlamp and the obstruction is greater than 50cm and less than or equal to 1m, the control circuit controls the LED beads 6 to emit medium brightness light (medium brightness mode); when the distance between the headlamp and the obstruction is greater than 1m and less than or equal to 3m, the control circuit controls the LED beads 6 to emit high brightness light (high brightness mode). When powered on, the headlamp can automatically switch modes based on the distance to obstructions without requiring the user to press a button, making mode switching simple and convenient.

[0034] See now Figures 3 to 6 The housing 4 includes a main housing 13 and a lens mounting base 14. The lens mounting base 14 has a first slot 15, and the lens 8 has a first latch 16 that engages with the first slot 15. The circumferential edge of the lens 8 abuts against the circumferential edge of the first opening 17 formed in the lens mounting base 14. The main housing 13 has a second slot 18, and the lens mounting base 14 has a second latch 19 that engages with the second slot 18. In this embodiment, the number of the first latch 16, the first slot 15, the second latch 19, and the second slot 18 are all two. Figure 3 From the perspective, the two first buckles 16 are located at the lower edges of the left and right ends of the lens 8, the two second buckles 19 are located on the inner sides of the lower edges of the left and right ends of the lens mounting base 14, the two first slots 15 are located on the inner edges of the left and right sides of the first opening 17 of the lens mounting base 14, and the two second slots 18 are located on the left and right outer sides of the main housing 13.

[0035] The main housing 13 also has a second opening 20, which is covered by the lens 8. The lens 8 has an annular portion 21 extending towards the second opening 20 and abutting against the circumferential edge of the second opening 20. A sealing ring 22 is provided between the annular portion 21 and the edge of the second opening 20 to effectively prevent rainwater from entering the main housing 13 through the second opening 20. The light emitted by the LED bead 6 can pass through the second opening 20 to reach the lens 8; the physical signal emitted by the distance sensor 7 can pass through the second opening 20 to reach the lens 8, or the distance sensor 7 can extend out of the second opening 20. Depending on the specific parameters and data of the LED bead 6, the lens 8 can also be equipped with a corresponding reflector, convex lens 8, etc.

[0036] The assembly process of the main housing 13, lens holder 14, and lens 8 is as follows: first, the lens 8 is fastened to the lens holder 14, and then the lens holder 14 is fastened to the main housing 13. The lens holder 14 reduces wear and tear on the lens 8 during assembly. Specifically, the lens holder 14 can be made of low-cost materials such as plastic, with a cost far lower than the manufacturing cost of the lens 8. During the process of fastening the lens 8 into the lens holder 14, because the structural strength of the lens holder 14 is less than that of the main housing 13, the lens holder 14 is more prone to deformation than the main housing 13, making it easier for the lens 8 to be fastened into the lens holder 14 and reducing the probability of physical damage to the lens 8. Furthermore, if the lens holder 14 is damaged due to operator error during the process of fastening it into the main housing 13, the lens holder 14 can be replaced, resulting in low wear and tear costs.

[0037] In this embodiment, the main housing 13 has a positioning hole 23, and the lens mounting base 14 has a positioning post 24 that mates with the positioning hole 23. The number of positioning holes 23 can be set according to actual conditions.

[0038] See now Figures 7 to 10In this embodiment, the back plate 2 has two oppositely arranged mounting seats 25, and the inner peripheral wall of the mounting seats 25 has a plurality of positioning grooves 26 formed circumferentially. The main housing 13 is located between the two mounting seats 25, and two rotating shaft portions 27 are formed on two opposite sides of the main housing 13, which respectively extend into the corresponding mounting seats 25. The outer periphery of the rotating shaft portion 27 has positioning protrusions 28. The headlamp body 14 also includes two damping rings 29 respectively fitted onto the corresponding rotating shaft portions 27. The inner ring of the damping ring 29 has a recess 30 that mates with the positioning protrusions 28, and the outer ring of the damping ring 29 has a plurality of elongated protrusions 31 that mate with each positioning groove 26 of the mounting seat 25. The damping ring 29 also has a plurality of holes 32 that provide space for each elongated protrusion 31 to deform inward in the direction of the inner ring. During the rotation of the main housing 13 relative to the back plate 2, the damping ring 29 does not rotate relative to the pivot 27, but rotates relative to the mounting base 25. The elongated protrusions 31 deform inwards under external force, separating from their corresponding positioning grooves 26 that were in place before rotation. After rotating to the corresponding angle, each elongated protrusion 31 engages with its corresponding positioning groove 26 to "lock" the angle between the main housing 13 and the back plate 2, thereby "locking" the direction of the light emitted by the LED beads 6. Therefore, the headlight emission direction adjustment based on distance-sensing dynamic dimming in this embodiment is simple and convenient.

[0039] Specifically, a threaded hole 33 may be formed at the center of the free end of the pivot 27. The headlamp body 14 may also include a bolt 34 that mates with the threaded hole 33, the head of which can abut against the side of the mounting base 25 facing away from the main housing 13. Preferably, the diameter of the bolt head is larger than the diameter of the inner ring of the damping ring 29. This bolt 34 effectively prevents the main housing 13 and the damping ring 29 from accidentally detaching from the back plate 2.

[0040] See now Figure 11 and Figure 12 The elongated protrusions 31 of the damping ring 29 extend axially and are distributed in a ring array. The edges of the cross-section of the elongated protrusions 31 of the damping ring 29 are arc-shaped and symmetrical from left to right. The holes 32 of the damping ring 29 are also distributed in a ring array, and the radius of the virtual circle in which all holes 32 are located is slightly smaller than the radius of the virtual circle in which all elongated protrusions 31 are located, that is, each hole is located close to the elongated protrusions 31.

Claims

1. A headlamp based on distance sensing dynamic dimming, characterized in that: The headlamp comprises a headlamp body, a back plate and a strap; the headlamp body comprises a shell, a battery, an LED lamp bead, a distance sensor, a lens, a PCB-A board and a switch; the back plate is connected with the shell, and the back plate forms a strap passing hole for the strap to pass through; the LED lamp bead and the distance sensor are both installed on the same side of the PCB-A board and are both electrically connected with a control circuit on the PCB-A board; the lens is installed on the shell, and the LED lamp bead, the distance sensor and the PCB-A board are all arranged in an internal space surrounded by the shell and the lens; the lens comprises a plane mirror, and the emitting end and the receiving end of the distance sensor both face the plane mirror; The shell comprises a main shell and a lens fixing seat, the lens fixing seat is formed with a first clamping groove, and the lens is formed with a first clamping buckle matched with the first clamping groove; the circumferential edge of the lens abuts against the circumferential edge of a first opening formed in the lens fixing seat; the main shell is formed with a second opening and a second clamping groove; the lens fixing seat is formed with a second clamping buckle matched with the second clamping groove, the lens covers the second opening, the lens is formed with an annular part extending to the direction of the second opening and abutting against the circumferential edge of the second opening, and a sealing ring is arranged between the annular part and the edge of the second opening; the light emitted by the LED lamp bead can pass through the second opening to reach the lens; the physical signal emitted by the distance sensor can pass through the second opening to reach the lens, or the distance sensor extends out of the second opening.

2. The distance-sensing dynamically dimmed headlamp of claim 1, wherein: The main shell is formed with a positioning hole, and the lens fixing seat is formed with a positioning column matched with the positioning hole.

3. The distance-sensing dynamically dimmed headlamp of claim 1, wherein: The back plate is formed with two oppositely arranged mounting seats, the inner circumferential wall of the mounting seat is formed with a plurality of positioning grooves in the circumferential direction; the main shell is located between the two mounting seats, and the two opposite sides of the main shell are formed with two rotating shaft parts respectively extending into the corresponding mounting seats, and the outer circumferences of the rotating shaft parts are formed with positioning protrusions; the headlamp body further comprises two damping rings respectively sleeved on the corresponding rotating shaft parts, the inner ring of the damping ring is formed with a recess matched with the positioning protrusion, and the outer ring of the damping ring is formed with a plurality of long strip-shaped protrusions matched with the positioning grooves of the mounting seat; the damping ring is further formed with a plurality of holes providing space for the deformation of the long strip-shaped protrusions to the inner ring.

4. The distance-sensing dynamically dimmed headlamp of claim 3, wherein: A threaded hole is formed at the center of the free end of the rotating shaft part; the headlamp body further comprises a screw matched with the threaded hole, and the head of the screw can abut against the side of the mounting seat facing away from the main shell.

5. The distance-sensing dynamically dimmed headlamp of claim 4, wherein: The long strip-shaped protrusions of the damping ring extend in the axial direction and are arranged in an annular array.

6. The distance-sensing dynamically dimmed headlamp of claim 5, wherein: The edges of the cross section of the long strip-shaped protrusions of the damping ring are arc-shaped and left-right symmetrical.

7. The distance-sensing dynamically dimmed headlamp of claim 6, wherein: The holes of the damping ring are arranged in an annular array, and the radius of the virtual circle shared by the holes is smaller than the radius of the virtual circle shared by the long strip-shaped protrusions.

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