A flashlight with a switchable LED core

Abstract

The utility model discloses a kind of flashlight of switchable LED core, belong to flashlight technical field, including shell and the LED core of being located in shell, further include: rotary drive mechanism, it includes rotatable setting on the rotary knob of shell;Lamp bead carrier plate, it is driving lamp bead carrier plate rotation around an axis with rotary knob transmission connection and drive, at least two different LED cores are fixedly installed on lamp bead carrier plate in the mode of around axis;Positioning mechanism, it is located between shell and lamp bead carrier plate or rotary knob;Switching switch mechanism, it includes one with rotary knob linkage and can rotate with it rotor, and one stator fixed in shell, contact point is equipped on rotor, and stator is equipped with several groups and different LED core one-to-one corresponding conductive area.The utility model example flashlight, LED core is switched mechanically by rotary knob, and automatic identification and adaptive drive current using contact point coding are utilized, multiple LED core quick, reliable switching is realized.

Description

Technical Field

[0001] This utility model relates to the field of flashlight technology, and in particular to a flashlight with a switchable LED core. Background Technology

[0002] Flashlights are a common lighting tool with diverse applications. For example, floodlights are needed for close-range repairs, while focused lighting is required for long-distance searches. Sometimes, high color rendering white light is needed, while in rainy or foggy weather, more penetrating yellow light is required. To adapt to different scenarios, users usually need to carry multiple flashlights equipped with different LED cores (such as different light colors and different wattages), which causes inconvenience and financial burden.

[0003] Several solutions exist in the existing technology that attempt to address this problem. For example, some flashlights allow users to unscrew the entire head and manually replace individual LED modules. However, this approach is cumbersome, lacks quick switching capabilities, and is difficult to operate in outdoor or low-light conditions. Furthermore, replacement requires readjusting the focus, disrupting the continuity of use.

[0004] Another approach is to use multiple fixed LED cores, selectively lit via a switching circuit. However, this method is limited by the limited physical space in the flashlight head, which cannot accommodate too many LED cores, thus restricting its functional expandability. More importantly, different types of LED cores (such as cool white light and warm white light) often have different optimal operating currents and voltages. A simple on / off switch cannot provide precise and suitable driving parameters for different LEDs, which may lead to reduced LED luminous efficacy, shortened lifespan, or even damage. Utility Model Content

[0005] To address the shortcomings of the existing technology, the purpose of this invention is to provide a flashlight with switchable LED cores. This flashlight mechanically switches LED cores by rotating a lever and automatically identifies and adapts the drive current using contact coding, thus achieving fast and reliable switching between multiple LED cores.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A flashlight with a switchable LED core is provided, including a housing and an LED core disposed within the housing, and further comprising: A rotary drive mechanism, comprising a rotary lever rotatably mounted on the housing; The LED bead carrier disk is connected to the rotating lever and drives the LED bead carrier disk to rotate around an axis. At least two different LED cores are fixedly mounted on the LED bead carrier disk in a manner around the axis. A positioning mechanism is provided between the housing and the LED bead carrier plate or the rotating lever, for providing a positioning feel and locking it when the LED bead carrier plate is rotated to make any LED core reach the working position; The switching mechanism includes a mover that is linked to and rotates with the rotary lever, and a stator fixed inside the housing. The mover has contacts, and the stator has several sets of conductive areas corresponding to different LED cores. When the rotary lever drives the mover to different positions, the electrical contacts on the mover contact different conductive areas on the stator, thereby selectively lighting the corresponding LED core.

[0007] Furthermore, the positioning mechanism includes a positioning bead disposed on a rotating lever, and the housing is provided with multiple positioning grooves.

[0008] Furthermore, the lamp bead carrier plate has a circular structure.

[0009] Furthermore, the different conductive areas on the stator are insulated from each other and are each connected to an independent power supply circuit.

[0010] Furthermore, the independent power supply circuits are configured to provide different drive currents to different LED cores.

[0011] Furthermore, it also includes a control unit, which identifies the type of LED core currently in the working position based on the circuit state formed by the contact between the mover and the stator, and drives the power supply circuit to output a working current that matches the type of LED core.

[0012] Furthermore, the circuit state is a combination of on / off states between different contacts on the mover.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The flashlight with switchable LED cores of this utility model drives the LED bead carrier plate to rotate by rotating the lever. Combined with the positioning mechanism, the user can quickly and accurately switch between different LED cores by simply flicking the lever with one hand. The operation is clear and the positioning is accurate, which completely solves the cumbersome problem of disassembling the lamp head and manually replacing the LED beads required by the traditional solution. 2. The switchable LED core flashlight of this utility model integrates multiple LED cores on a rotatable lamp bead carrier plate and switches the circuit through an integrated mover and stator structure, which greatly simplifies the internal structure, saves space, and allows the flashlight head to be designed to be smaller. The mechanical switching and positioning method is more durable and environmentally adaptable than electronic switches or complex linkage mechanisms. 3. The flashlight with switchable LED cores in this utility model achieves physical circuit switching through the contact between different conductive areas on the mover and the stator. This structure can connect different LED cores to their own preset power supply circuits, thereby automatically and accurately providing them with the best working current, effectively avoiding problems such as reduced LED luminous efficacy, poor color rendering, or shortened lifespan caused by mismatched drive current. 4. The switchable LED core flashlight of this utility model has a large-area planar or arc-shaped surface contact between the mover and the stator. Compared with traditional plug-in connectors, it has lower contact resistance and higher connection stability, which can reduce energy loss and heat generation. Attached Figure Description

[0014] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the shell; Figure 3 This is a schematic diagram of the positioning mechanism. Figure 4 This is a schematic diagram of the switching mechanism.

[0015] In the diagram: 1-Housing, 2-LED core, 3-Rotating lever, 4-LED bead carrier plate, 5-Motor, 6-Stator, 7-Positioning bead, 8-Positioning groove. Detailed Implementation

[0016] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] Example 1: like Figure 1-4As shown, this embodiment provides a flashlight with switchable LED cores. The flashlight includes a cylindrical housing 1. Inside the head of the housing 1, a rotating lever 3 is rotatably mounted, with a portion of the rotating lever 3 extending out of the housing 1 for user operation. A circular LED bead carrier plate 4 is fixedly connected to the inner end of the rotating lever 3 by snap-fit ​​or screw. Three different LED cores 2 are evenly mounted on the LED bead carrier plate 4 around its rotation axis, namely a cool white LED, a warm white LED, and a red LED.

[0019] A positioning bead 7 is provided at the bottom of the rotating lever 3, and three positioning grooves 8 distributed along an arc are provided on the housing 1, forming a positioning mechanism. In this embodiment, the positioning bead 7 has a built-in spring. When the user rotates the rotating lever 3, the positioning bead 7 rotates accordingly. Whenever an LED core 2 rotates to the lighting position directly in front, the positioning bead 7 engages with a corresponding positioning groove 8, completing the switching of the LED core 2.

[0020] The core switching mechanism is located at the rear of the LED bead carrier plate 4. It includes an insulated rotating disk serving as a mover 5, which rotates synchronously with the rotating lever 3. Three mutually insulated arc-shaped metal plates are fixed on this insulated rotating disk, serving as electrical contacts for the mover 5. Opposite the mover 5 is a stator 6 substrate fixed within the housing 1. On this stator 6 substrate, three sets of concentric annular conductive areas are fabricated using printed circuit technology. These three sets of conductive areas are insulated from each other and are connected to the output terminals of three independent constant current drive chips on the drive circuit board via wires. These three constant current drive chips are preset to provide operating currents suitable for cool white, warm white, and red LED cores 2, respectively.

[0021] Workflow: When the user rotates lever 3, causing the cool white LED core 2 to reach the working position, the metal plate on the mover 5 makes full contact with the conductive area on the stator 6 that is connected to the cool white light driving circuit, thus connecting the circuit and illuminating the cool white LED. When the user rotates lever 3 again, switching the warm white LED core 2 to the working position, the mover 5 rotates by an angle, causing the metal plate on it to disconnect from the previous conductive area and rotate to contact the other conductive area corresponding to the warm white light driving circuit, thus automatically switching to warm white lighting mode. The switching process for red LEDs is similar.

[0022] Example 2: This embodiment upgrades the electrical components based on the mechanical structure of Embodiment 1.

[0023] The conductive regions on the stator 6 substrate have several different layouts. Each group of conductive regions is a fan-shaped area with a specific on / off coding pattern. At the same time, the metal plates on the mover 5 are matched with the coding pattern of the stator 6.

[0024] The drive circuit integrates a control unit. The electrical contacts on the mover 5 feed back the encoded signal (i.e., the on / off combination between different contacts) of the currently contacted stator 6 area to the control unit in real time. The control unit pre-stores the LED core 2 types corresponding to different codes. Once the current code is identified, the control unit controls a programmable constant current drive chip through the communication protocol to output the optimal operating current that is perfectly matched to the LED core 2.

[0025] This method enables more refined drive control. Even if a new LED core 2 with different parameters is replaced, only the control unit program needs to be updated, without changing the hardware circuit, thus possessing strong upgradeability and adaptability.

[0026] Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-mentioned technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-mentioned technical features or their equivalent features without departing from the inventive concept. For example, technical solutions formed by substituting the above-mentioned features with technical features disclosed in this application (but not limited to) that have similar functions.

Claims

1. A flashlight with switchable LED cores, characterized in that, Including a housing (1) and an LED core (2) disposed within the housing (1), and further including: A rotary drive mechanism, which includes a rotary lever (3) rotatably mounted on the housing (1). The LED bead carrier plate (4) is connected to the rotating lever (3) and drives the LED bead carrier plate (4) to rotate around an axis. At least two different LED cores (2) are fixedly installed on the LED bead carrier plate (4) around the axis. A positioning mechanism is provided between the housing (1) and the lamp bead carrier plate (4) or the rotating lever (3) to provide a positioning feel and lock it when the lamp bead carrier plate (4) is rotated to make any LED core (2) reach the working position; The switching mechanism includes a mover (5) that is linked to and can rotate with the rotary lever (3), and a stator (6) fixed in the housing (1). The mover (5) is provided with contacts, and the stator (6) is provided with several sets of conductive areas corresponding to different LED cores (2). When the rotary lever (3) drives the mover (5) to rotate to different positions, the electrical contacts on the mover (5) contact different conductive areas on the stator (6), thereby selectively lighting the corresponding LED core (2).

2. A flashlight with a switchable LED core according to claim 1, characterized in that, The positioning mechanism includes a positioning bead (7) disposed on a rotating lever (3), and the housing (1) is provided with a plurality of positioning grooves (8).

3. A flashlight with a switchable LED core according to claim 1, characterized in that, The lamp bead carrier plate (4) has a circular structure.

4. A flashlight with a switchable LED core according to claim 1, characterized in that, The different conductive areas on the stator (6) are insulated from each other and are respectively connected to independent power supply circuits.

5. A flashlight with a switchable LED core according to claim 4, characterized in that, The independent power supply circuits are configured to provide different drive currents for different LED cores (2).

6. A flashlight with a switchable LED core according to claim 1, characterized in that, It also includes a control unit, which identifies the type of LED core (2) currently in operation based on the circuit state formed by the contact between the mover (5) and the stator (6), and drives the power supply circuit to output an operating current that matches the type of LED core (2).

7. A flashlight with a switchable LED core according to claim 6, characterized in that, The circuit state is the combination of on / off states between different contacts on the mover (5).

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