Color-changing flashlight

Abstract

The utility model relates to a color-changing flashlight. The color-changing flashlight comprises a light-emitting heat dissipation assembly, a light source conversion assembly, a front cover optical assembly and a power supply assembly. The light-emitting heat dissipation assembly comprises LEDs and switches, and the number of the LEDs and the number of the switches are the same and are both larger than or equal to two. The light-emitting and heat-dissipating assembly is fixedly installed at one end of the cylinder body of the power supply assembly. The light source conversion assembly comprises a trigger element, and the trigger element can respectively trigger each switch to connect or disconnect a circuit where the corresponding LED is located; the front cover optical assembly comprises a front cover assembly and a Fresnel reflection cup; the Fresnel reflection cup is fixed on the front cover assembly; the position of the front cover assembly can be changed relative to the LEDs, so that the LEDs can be located on the virtual central axis of the Fresnel reflection cup, and the distance between the Fresnel reflection cup and the LEDs is changed when the corresponding LEDs are located on the virtual central axis of the Fresnel reflection cup. The color-changing flashlight can emit light of at least two colors, and zoom can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of lighting appliances, specifically to a color-changing flashlight. Background Technology

[0002] In daily life, flashlights are often used for various scenarios such as emergency lighting during power outages, lighting for nighttime outdoor activities (such as camping and hiking), and lighting when inspecting narrow spaces (such as pipes and corners).

[0003] Traditional outdoor flashlights emit only white light. However, with societal development, single-color flashlights can no longer meet diverse user needs. For example, in emergencies, red light is often used as a danger or distress signal, easily attracting attention; green light is more conspicuous at long distances and can be used for communication or marking specific locations within a certain range; in foggy, rainy, or dusty weather, yellow light has relatively good penetration, providing clearer illumination in adverse weather conditions, helping users see the road or targets ahead; and different colors of light can be used to convey specific instructions.

[0004] To address these needs, the common solution is to carry multiple flashlights or light filters with different colors of light. However, this method has drawbacks such as inconvenience in carrying, easy loss, and cumbersome replacement. Utility Model Content

[0005] In view of the above problems, this utility model is proposed to provide a color-changing flashlight that overcomes or at least partially solves the above problems, the color-changing flashlight being able to emit light of at least two colors and to achieve focus adjustment.

[0006] The color-changing flashlight includes a light-emitting and heat-dissipating component, a light source conversion component, a front cover optical component, and a power supply component. The light-emitting and heat-dissipating component includes LEDs and switches. The number of LEDs is the same as the number of switches, and both are greater than or equal to two. At least two LEDs emit light of different colors. Each switch is used to control the on / off state of the circuit where the corresponding LED is located. The light-emitting and heat-dissipating component is fixedly installed at one end of the body of the power supply component. The light source conversion component includes a trigger element, which can trigger each switch to connect or disconnect the circuit where the corresponding LED is located. The front cover optical component includes a front cover assembly and a Fresnel reflector. The Fresnel reflector is fixed to the front cover of the front cover assembly. The front cover assembly can change the position relative to the LEDs so that each LED can be located on the virtual central axis of the Fresnel reflector, and can change the distance between the Fresnel reflector and the LED when the corresponding LED is located on the virtual central axis of the Fresnel reflector.

[0007] In one embodiment, each of the LEDs is located on the same virtual circle, the virtual plane of which is parallel to the virtual plane of the cross-section of the cylinder and perpendicular to the virtual central axis of the Fresnel reflector; the front cover assembly is rotatable relative to the cylinder so that each LED can be located on the virtual central axis of the Fresnel reflector.

[0008] In one embodiment, the light source conversion assembly further includes a movable cylindrical section sleeved on the cylinder body, the front cover assembly being sleeved on the movable cylindrical section and capable of rotating relative to the cylinder body with the movable cylindrical section; the trigger element is mounted on the movable cylindrical section, and when the trigger element is in the position where the trigger switch connects the circuit, the corresponding LED is located on the virtual central axis of the Fresnel reflector.

[0009] In one embodiment, each of the switches is located on the same virtual circle, and the virtual plane in which the virtual circle is located is parallel to the virtual plane in which the virtual circles of the LEDs are located; the switches are Hall switches, and the triggering element is a magnet.

[0010] In one embodiment, the movable cylindrical section is provided with a positioning bead, and the cylindrical body or light-emitting heat dissipation component is formed with a plurality of positioning holes into which the positioning bead extends. When the positioning bead extends into the positioning hole, the triggering element is in the position where the trigger switch connects the circuit.

[0011] In one embodiment, the outer peripheral wall of the movable cylinder is formed with an external thread; the front cover assembly includes a front cover, a front cover connecting sleeve, and a drive ring; the front end of the front cover connecting sleeve is fixedly connected to the front cover; the inner wall of the drive ring is formed with an internal thread that mates with the external thread of the movable cylinder, and the drive ring can rotate helically relative to the movable cylinder under the drive of an external force; the drive ring forms an annular groove, and the front cover connecting sleeve forms a sliding part that extends into and mates with the annular groove; the movable cylinder provides a constraint on the front cover connecting sleeve to prevent the front cover connecting sleeve from rotating relative to the movable cylinder.

[0012] In one embodiment, the drive ring consists of a threaded sleeve and a rotating ring. The inner wall of the threaded sleeve has an internal thread that mates with the external thread of the movable cylinder. The rotating ring is sleeved and fixed on the threaded sleeve, and the front end of the threaded sleeve and the front end of the rotating ring together form the annular groove.

[0013] In one embodiment, the sliding portion is annular.

[0014] In one embodiment, the front cover optical assembly further includes a reflector cup retainer ring, which abuts against a Fresnel reflector cup and is fixedly connected to the front cover via a connector; the inner wall of the movable cylindrical section is formed with an axially extending strip groove, and the reflector cup retainer ring forms a sliding part that extends into and cooperates with the strip groove.

[0015] In one embodiment, when the Fresnel reflector is in a position away from the LED, the drive ring abuts against the retaining ring at the front end of the movable cylindrical section; when the Fresnel reflector is in a position close to the LED, the front end of the movable cylindrical section abuts against the reflector pressure ring.

[0016] The color-changing flashlight can emit light of at least two colors and can adjust the focus. Attached Figure Description

[0017] 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:

[0018] Figure 1 This is a schematic diagram of an exemplary embodiment of a color-changing flashlight according to the present invention;

[0019] Figure 2 for Figure 1 A cross-sectional view of the color-changing flashlight in overfocus mode;

[0020] Figure 3 for Figure 1 A cross-sectional view of the color-changing flashlight in focus.

[0021] Figure 4 for Figure 1 An exploded view of the color-changing flashlight shown;

[0022] Figure 5 This is an exploded view of the light-emitting and heat-dissipating component;

[0023] Figure 6 This is a schematic diagram of the light source conversion component;

[0024] Figure 7 A schematic diagram of the light source conversion component from another perspective;

[0025] Figure 8 This is an exploded view of the front cover optical components.

[0026] Explanation of reference numerals in the attached drawings: 1. Light-emitting and heat-dissipating assembly; 2. Light source conversion assembly; 3. Front cover optical assembly; 4. Power supply assembly; 5. LED; 6. Switch; 7. Body; 8. PCB board; 9. Trigger element; 10. Front cover assembly; 11. Fresnel reflector; 12. Front cover; 13. Movable cylinder section; 14. First mark; 15. Second mark; 16. Positioning bead; 17. Positioning hole; 18. Heat sink; 19. Front cover connecting sleeve; 20. Drive ring; 21. Sliding part; 22. Threaded sleeve; 23. Rotating ring; 24. Reflector pressure ring; 25. Lens; 26. Strip groove; 27. Sliding part; 28. Retaining ring. 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] A color-changing flashlight according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0032] See Figures 1 to 4 According to an embodiment of the present invention, a color-changing flashlight includes a light-emitting and heat-dissipating component 1, a light source conversion component 2, a front cover optical component 3, and a power supply component 4.

[0033] See now Figure 3 and Figure 5 The light-emitting and heat-dissipating component 1 includes LEDs 5 and switches 6. The number of LEDs 5 and the number of switches 6 are the same and both are greater than or equal to two. At least two LEDs 5 emit light of different colors. Each switch 6 is used to control the on / off state of the circuit containing the corresponding LED 5. The light-emitting and heat-dissipating component 1 is fixedly installed at one end of the body 7 of the power supply component 4. An LED (light emitting diode) is a solid-state semiconductor device that can convert electrical energy into visible light. The colors of the light emitted by each of the LEDs 5 can be different. For example, if there are four LEDs 5, they can emit white light, red light, blue light, and green light respectively when powered on. Or, if there are four LEDs 5, they can emit white light, red light, white light, and blue light respectively when powered on. The number of LEDs 5 in the color-changing flashlight can be set according to actual needs, and the color of the light emitted by each LED 5 when powered on can also be set according to actual needs. This embodiment does not limit this.

[0034] Each switch 6 controls the on / off state of the circuit containing one LED 5. Normally, only one switch 6 is connected to the circuit containing the corresponding LED 5 at any given time, so only one LED 5 illuminates at that moment. In this embodiment, the switch 6 is a Hall switch. The working principle of a Hall switch is based on the Hall effect. When a magnetic object approaches the Hall switch or the surrounding magnetic field changes, the Hall element inside generates a Hall potential. The Hall switch is connected to the circuit containing the LED 5, enabling on / off control of the circuit. The switch 6 is mounted on the PCB board 8. It should be understood that the switch 6 can also be a mechanical switch or other suitable switches.

[0035] See now Figure 3 and Figure 6The light source conversion component 2 includes a trigger element 9, which can trigger each switch 6 to connect or disconnect the circuit containing the corresponding LED 5. In this embodiment, since the switch 6 is a Hall switch, the trigger element 9 can be a magnet. When the distance between the trigger element 9 and the corresponding switch 6 is less than the trigger distance, the Hall element inside the switch 6 generates a Hall potential, causing the switch 6 to connect the circuit containing the corresponding LED 5, and the LED 5 emits light; when the distance between the trigger element 9 and the switch 6 is greater than the trigger distance, the switch 6 disconnects the circuit containing the LED 5. It should be understood that if the switch 6 is a mechanical switch or other suitable switch, the trigger element 9 will have a corresponding structure capable of triggering each switch 6 to connect or disconnect the circuit.

[0036] See now Figure 3 and Figure 8 The front cover optical assembly 3 includes a front cover assembly 10 and a Fresnel reflector 11, the Fresnel reflector 11 being fixed to the front cover 12 of the front cover assembly 10. The front cover assembly 10 can change its position relative to the LEDs 5, so that each LED 5 can be located on the virtual central axis of the Fresnel reflector 11, and can change the distance between the Fresnel reflector 11 and the LED 5 when the corresponding LED 5 is located on the virtual central axis of the Fresnel reflector 11.

[0037] To improve the light collection and control of the Fresnel reflector 11, the LEDs 5 need to be arranged on the virtual central axis of the Fresnel reflector. Since the color-changing flashlight has at least two LEDs 5, the position of the front cover assembly 10 relative to the LEDs 5 needs to be changed during actual use so that each LED 5 can be located on the virtual central axis of the Fresnel reflector 11. For example, when an LED 5 of a certain color is emitting light, the position of the front cover assembly 10 relative to the LED 5 needs to be changed so that the LED 5 is located on the virtual central axis of the Fresnel reflector 11.

[0038] To achieve the focusing function, while ensuring that the corresponding LED 5 is located on the virtual central axis of the Fresnel reflector 11, it is also necessary to change the distance between the Fresnel reflector 11 and the LED 5. For example, Figure 2 As shown, the Fresnel reflector 11 is positioned close to the LED 5, at which point the color-changing flashlight is in a pan-focused state. For example, Figure 3 As shown, the Fresnel reflector 11 is positioned away from the LED 5, at which point the color-changing flashlight is in focus. Of course, the Fresnel reflector 11 can also be positioned between "closer to the LED 5" and "away from the LED 5".

[0039] See now Figure 2 and Figure 5In this embodiment, each LED 5 is located on the same virtual circle. The virtual plane containing this virtual circle is parallel to the virtual plane containing the cross-section of the tube body 7 and perpendicular to the virtual central axis of the Fresnel reflector 11. The front cover assembly 10 can rotate relative to the tube body 7, allowing each LED 5 to be located on the virtual central axis of the Fresnel reflector 11. This arrangement ensures that when the front cover assembly 10 rotates only relative to the tube body 7 without longitudinal movement, the distance between the LED 5 and the Fresnel reflector 11 remains constant. This facilitates the process of changing the color of the light emitted by the color-changing flashlight, i.e., changing the luminous LED 5, without changing the focal length.

[0040] See now Figure 2 and Figure 6 In this embodiment, the light source conversion assembly 2 further includes a movable cylindrical section 13 sleeved on the body 7. The front cover assembly 10 is sleeved on the movable cylindrical section 13 and can rotate relative to the body 7 with the movable cylindrical section 13. The trigger element 9 is installed on the movable cylindrical section 13. When the trigger element 9 is in the position where the trigger switch 6 connects the circuit, the corresponding LED 5 is located on the virtual central axis of the Fresnel reflector 11. Rotating the movable cylindrical section 13 can realize the conversion of the color of the light emitted by the color-changing flashlight, that is, the conversion of the emitting LED 5, without changing the focal length. Optionally, the outer peripheral wall of the movable cylindrical section 13 is provided with a first mark 14 corresponding to the position of the trigger element 9, and the outer peripheral wall of the cylindrical body 7 is provided with a plurality of second marks 15. The number of second marks 15 is the same as the number of LEDs 5. When the first mark 14 is located near a certain second mark 15, a corresponding LED 5 is energized and emits light. For example, the number of LEDs 5 is four, namely LEDs emitting white light, LEDs emitting red light, LEDs emitting blue light, and LEDs emitting yellow light. When the first mark 14 is located near different second marks 15, the energized LEDs 5 are different, and the colors of the emitted light are different.

[0041] Each of the switches 6 can be located on the same virtual circle, and the virtual plane containing this virtual circle is parallel to the virtual plane containing the virtual circles of the LEDs 5. When the switches 6 are Hall effect switches and the trigger element 9 is a magnet, having each switch 6 located on the same virtual circle, and the virtual plane containing this virtual circle being parallel to the virtual plane containing the cross-section of the cylinder 7, improves the accuracy of the trigger element 9 in triggering the switches 6 to perform the on / off circuit operation when the trigger element 9 rotates relative to the cylinder 7 with the movable cylinder section 13.

[0042] The movable cylindrical section 13 may be provided with positioning beads 16, and the cylindrical body 7 or the light-emitting and heat-dissipating assembly 1 has a plurality of positioning holes 17 into which the positioning beads 16 extend. When the positioning beads 16 extend into the positioning holes 17, the trigger element 9 is in the position where the trigger switch 6 is connected to the circuit, that is, the positioning beads 16 enable the trigger element 9 to remain in the position where the trigger switch 6 is connected to the circuit. In this embodiment, the heat sink 18 of the light-emitting and heat-dissipating assembly 1 has the positioning holes 17, and the number of positioning holes 17 can be the same as the number of LEDs 5, or it can be two or several times the number of LEDs 5.

[0043] The outer peripheral wall of the movable cylindrical section 13 is formed with external threads. See now. Figure 2 and Figure 8 The front cover assembly 10 includes a front cover 12, a front cover connecting sleeve 19, and a drive ring 20. The front end of the front cover connecting sleeve 19 is fixedly connected to the front cover 12. The inner wall of the drive ring 20 has an internal thread that engages with the external thread of the movable cylinder 13, allowing the drive ring 20 to rotate helically relative to the movable cylinder 13 under external force. The drive ring 20 forms an annular groove, and the front cover connecting sleeve 19 has a sliding portion 21 that extends into and engages with the annular groove. The sliding portion 21 is preferably annular. The movable cylinder 13 provides a constraint on the front cover connecting sleeve 19, preventing it from rotating relative to the movable cylinder 13. During the rotation of the drive ring 20, the drive ring 20 causes the front cover connecting sleeve 19 to move axially, thereby causing the entire front cover optical assembly 3 (including the Fresnel reflector cup 11) to move axially, thus achieving focusing. Of course, during this process, the friction between the drive ring 20 and the movable cylinder 13 is insufficient to cause the movable cylinder 13 to rotate relative to the cylinder body 7, so as to avoid accidentally changing the LED5 of the circuit during focusing.

[0044] Specifically, the drive ring 20 may consist of a threaded sleeve 22 and a rotating ring 23. The inner wall of the threaded sleeve 22 has an internal thread that mates with the external thread of the movable cylindrical section 13. The rotating ring 23 is sleeved and fixed on the threaded sleeve 22, and the front end of the threaded sleeve 22 and the front end of the rotating ring 23 together form the annular groove.

[0045] The front cover optical assembly 3 also includes a reflector cup retaining ring 24 and a lens 25. The reflector cup retaining ring 24 abuts against the Fresnel reflector cup 11 and is fixedly connected to the front cover 12 via a connector, which can be a bolt. The inner wall of the movable cylindrical section 13 has an axially extending strip groove 26, and the reflector cup retaining ring 24 has a sliding part 27 that extends into and cooperates with the strip groove 26. The cooperation between the strip groove 26 and the sliding part 27 prevents the front cover connecting sleeve 19 from rotating relative to the movable cylindrical section 13.

[0046] See now Figure 2 and Figure 3 When the Fresnel reflector 11 is positioned away from the LED 5, the drive ring 20 abuts against the retaining ring 28 located at the front end of the movable cylindrical section 13; when the Fresnel reflector 11 is positioned close to the LED 5, the front end of the movable cylindrical section 13 abuts against the reflector pressure ring 24. This configuration allows for easy adjustment of the color-changing flashlight (i.e., rotating the drive ring 20) to switch between pan-focus and focused states.

[0047] This embodiment of the color-changing flashlight can emit light of at least two colors and can adjust the focus.

Claims

1. A color changing flashlight, characterized by: The application relates to a light-emitting device, which comprises a light-emitting and radiating assembly, a light source transforming assembly, a front cover optical assembly and a power supply assembly; the light-emitting and radiating assembly comprises LEDs and switches, the number of the LEDs is the same as that of the switches and is greater than or equal to two, the colors of the light emitted by the at least two LEDs are different, and each switch is used for controlling the on-off of the circuit in which the corresponding LED is located; the light-emitting and radiating assembly is fixedly installed at one end of the barrel body of the power supply assembly; the light source transforming assembly comprises a triggering element, the triggering element can trigger each switch to turn on or turn off the circuit in which the corresponding LED is located; the front cover optical assembly comprises a front cover assembly and a Fresnel reflecting cup; the Fresnel reflecting cup is fixed on the front cover of the front cover assembly; the front cover assembly can be transformed in position relative to the LED, so that each LED can be located on the virtual central axis of the Fresnel reflecting cup, and the distance between the Fresnel reflecting cup and the corresponding LED located on the virtual central axis of the Fresnel reflecting cup can be changed.

2. The changing color flashlight of claim 1, wherein: Each LED is located on the same virtual circle, the virtual plane in which the virtual circle is located is parallel to the virtual plane in which the cross section of the barrel body is located, and is perpendicular to the virtual central axis of the Fresnel reflecting cup; the front cover assembly can rotate relative to the barrel body, so that each LED can be located on the virtual central axis of the Fresnel reflecting cup.

3. The changing color flashlight of claim 2, wherein: The light source transforming assembly further comprises a movable barrel section sleeved on the barrel body, the front cover assembly is sleeved on the movable barrel section and can rotate relative to the barrel body along with the movable barrel section; the triggering element is installed on the movable barrel section, and when the triggering element is located at a position for triggering the switch to turn on the circuit, the corresponding LED is located on the virtual central axis of the Fresnel reflecting cup.

4. The changing color flashlight of claim 3, wherein: Each switch is located on the same virtual circle, the virtual plane in which the virtual circle is located is parallel to the virtual plane in which each LED is located; the switch is a Hall switch, and the triggering element is a magnet.

5. The changing color flashlight of claim 3, wherein: The movable barrel section is provided with a positioning bead, the barrel body or the light-emitting and radiating assembly is formed with a plurality of positioning holes into which the positioning bead extends, and when the positioning bead extends into the positioning hole, the triggering element is located at the position for triggering the switch to turn on the circuit.

6. A colour change flashlight according to any one of claims 3 to 5, characterised in that: The outer peripheral wall of the movable barrel section is formed with external threads; the front cover assembly comprises a front cover, a front cover connecting sleeve and a driving ring; the front end of the front cover connecting sleeve is fixedly connected with the front cover; the inner wall of the driving ring is formed with internal threads matched with the external threads of the movable barrel section, and the driving ring can rotate spirally relative to the movable barrel section under the driving of external force; the driving ring is formed with an annular groove, the front cover connecting sleeve is formed with a sliding part extending into the annular groove and matched with the annular groove; and the movable barrel section restricts the rotation of the front cover connecting sleeve relative to the movable barrel section.

7. The changing color flashlight of claim 6, wherein: The driving ring is composed of a screw sleeve and a rotating ring, the inner wall of the screw sleeve is formed with internal threads matched with the external threads of the movable barrel section; and the rotating ring is sleeved and fixed on the screw sleeve, and the front end of the screw sleeve and the front end of the rotating ring sleeve jointly form the annular groove.

8. The changing color flashlight of claim 6, wherein: The sliding part is annular.

9. The changing color flashlight of claim 6, wherein: The front cover optical assembly further comprises a Fresnel reflector cup pressing ring abutting against the Fresnel reflector cup and fixedly connected with the front cover through a connecting piece; an inner wall of the movable cylinder section is formed with an axially extending strip-shaped groove, and the Fresnel reflector cup pressing ring is formed with a sliding part extending into the strip-shaped groove and matched with the strip-shaped groove.

10. The changing color flashlight of claim 9, wherein: When the Fresnel reflector cup is away from the LED, the driving ring abuts against the stop ring part at the front end of the movable cylinder section; when the Fresnel reflector cup is close to the LED, the front end of the movable cylinder section abuts against the Fresnel reflector cup pressing ring.

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