LED table lamp
By incorporating guide posts, springs, and microswitches into the LED desk lamp, the brightness switching between the main lighting and the night light section is controlled by varying the angle between the lamp head and the lamp post. This solves the problems of limited functionality and heat accumulation in desk lamps, while also improving aesthetics and heat dissipation.
Patent Information
- Application Number
- CN202520419695.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-11
AI Technical Summary
Existing desk lamps have limited functionality, lack aesthetic appeal, and have not effectively addressed the issue of heat accumulation.
An LED desk lamp was designed, which uses a guide post, spring and micro switch in the lamp post in conjunction with a cam surface to control the brightness of the lighting section and the night light section by changing the angle between the lamp head and the lamp post, so as to switch between dim night light and normal lighting. Heat accumulation is reduced by heat dissipation aluminum plate and copper foil.
It enables flexible control of the lighting section and the night light section, provides a dim light effect at night, reduces heat accumulation, and enhances the functionality and aesthetics of the desk lamp.
Smart Images
Figure CN223924727U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lighting technology, and in particular to an LED desk lamp. Background Technology
[0002] Desk lamps are common household lighting tools, widely used for reading, studying, and writing. Continuous improvement is needed to enhance the functionality and aesthetics of desk lamps.
[0003] Therefore, it is necessary to develop an LED desk lamp to overcome the above-mentioned shortcomings. Summary of the Invention
[0004] The purpose of this utility model is to disclose an LED desk lamp.
[0005] To achieve the above-mentioned objectives, this utility model provides an LED desk lamp, including a lamp post and a long strip lamp head hinged to the lamp post;
[0006] The lamp head includes a first hinge portion, an illumination portion, and a night light portion, wherein the first hinge portion is located between the illumination portion and the night light portion;
[0007] A guide post, a spring, and a micro switch are provided inside the lamp post. The first hinge part is provided with a cam surface, and the cam surface cooperates with the top of the guide post.
[0008] When the angle between the lamp head and the lamp pole is between 0° and 30°, the night light section becomes brighter, or the illumination section becomes dimmer.
[0009] Preferably, the cam surface presses down on the guide post during rotation, and the guide post triggers the micro switch.
[0010] Preferably, the lighting unit includes a lamp housing, a PCB board, and a plurality of LED beads, wherein the LED beads face the ground.
[0011] Preferably, a heat dissipation aluminum plate and copper foil are bonded to the back of the PCB board.
[0012] Preferably, the night light unit includes a night light housing, night light LED beads, and a light guide plate.
[0013] Preferably, the light from the LED beads of the night light is guided by a horizontal light guide plate, and a hollow part is provided on the top of the night light housing, with the light guide plate aligned with the hollow part.
[0014] Preferably, the light guide plate is provided with a plurality of optical dots.
[0015] Preferably, the lighting unit has maximum illumination brightness when the included angle between the lamp head and the lamp post is between 30° and 90°.
[0016] Preferably, a lamp holder is provided at the bottom of the lamp post, and the lamp holder is provided with a touch part.
[0017] Preferably, a second hinge is provided between the lamp post and the lamp holder.
[0018] Compared with the prior art, the beneficial effects of this utility model are:
[0019] The long strip lamp head is divided into an illumination section and a night light section by the first hinge. A guide post, a spring, and a micro switch are installed inside the lamp post. During the folding of the long strip lamp head, the cam surface drives the guide post to gradually descend and trigger the micro switch. When the angle between the lamp head and the lamp post is between 0° and 30°, the micro switch is triggered to control the illumination section and the night light section. The night light section lights up or the brightness of the illumination section changes to 10% of the maximum illumination brightness, achieving a dim lighting effect at night. In addition, after the illumination section dims, its heat generation is greatly reduced, and heat will not accumulate due to the illumination section being close to the lamp post. Attached Figure Description
[0020] Figure 1 This is a three-dimensional structural diagram of the LED desk lamp of this utility model.
[0021] Figure 2 This utility model describes the three-dimensional structure of an LED desk lamp.
[0022] Figure 3 This utility model relates to a three-dimensional structure for an LED desk lamp.
[0023] Figure 4 This utility model Figure 3 A magnified structural diagram at point A.
[0024] Figure 5 This is the main visual structure of the LED desk lamp of this utility model.
[0025] Figure 6 This utility model Figure 5 Schematic diagram of section AA.
[0026] Figure 7 This is a schematic diagram of the LED desk lamp of this utility model in an exploded state.
[0027] Figure 8 This is a schematic diagram of the folded state of the LED desk lamp of this utility model.
[0028] Figure 9 This is a schematic diagram of the micro switch control principle of this utility model.
[0029] Among them, 1. Lamp post; 2. Lamp head; 21. First hinge part; 211. Cam surface; 22. Lighting part; 221. Lamp housing; 222. PCB board; 223. LED lamp beads; 224. Heat dissipation aluminum plate; 225. Copper foil; 23. Night light part; 231. Night light housing; 232. Night light LED lamp beads; 233. Light guide plate; 234. Hollow part; 3. Guide post; 4. Spring; 5. Micro switch; 6. Lamp holder; 61. Touch part; 7. Second hinge part. Detailed Implementation
[0030] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent transformations or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the protection scope of the present invention.
[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0032] The specific implementation process of this utility model will be described below through several embodiments.
[0033] Example 1
[0034] See Figures 1 to 8 This embodiment discloses a specific implementation of an LED desk lamp.
[0035] See Figures 1 to 8 An LED desk lamp includes a lamp post 1 and a long, narrow lamp head 2 hinged to the lamp post 1. The lamp head 2 includes a first hinge portion 21, an illumination portion 22, and a night light portion 23. The first hinge portion 21 is located between the illumination portion 22 and the night light portion 23. A guide post 3, a spring 4, and a micro switch 5 are provided inside the lamp post 1. The first hinge portion 21 is provided with a cam surface 211. The cam surface 211 engages with the top of the guide post 3. During rotation, the cam surface 211 presses down on the guide post 3, and the guide post 3 triggers the micro switch 5. When the angle between the lamp head 2 and the lamp post 1 is between 0° and 30°, the night light portion 23 brightens, or the illumination portion 22 dims.
[0036] Specifically, see Figure 1 , Figure 1 The angle between the lamp head 2 and the lamp post 1 is between 0° and 30°. In this state, the guide post 3 is pressed down by the cam surface 211, causing the micro switch 5 to open. The micro switch 5 then controls the night light section 23 to brighten, activating the night light mode. A lamp holder 6 is provided at the bottom of the lamp post 1, and a touch part 61 is provided on the lamp holder 6. By pressing the touch part 61 for a long time, the touch part 61 can drive the lighting section 22 to open, but its brightness can only be 10% of the maximum lighting brightness. Continuing to press the touch part 61 can switch between the lighting section 22 and the night light section 23. During the switching process, the brightness of the lighting section 2 can only be 10% of the maximum brightness, achieving a dim lighting effect at night to prevent excessive brightness from causing heat to accumulate between the lamp head 2 and the lamp post 1; see also Figure 2 , Figure 2 The angle between the lamp head 2 and the lamp post 1 is between 30° and 90°. In this state, the guide post 3 is lifted by the spring 4, the micro switch 5 is not triggered, and the lighting unit 22 can be turned on in normal lighting mode, which has maximum lighting brightness. In this state, the heat emitted by the lighting unit 22 can be fully dissipated through the air; see also Figure 8 A second hinge 7 is provided between the lamp post 1 and the lamp holder 6, so that both the lamp head 2 and the lamp post 1 are in a shielded state. This state facilitates packaging and transportation and results in a compact structure.
[0037] See Figure 9 , Figure 9 This is a schematic diagram of the microswitch controlling the night light section 23. When the microswitch is not triggered, the microswitch output voltage Vtest is 0, the NPN transistor Q1 is cut off, and the voltage at the output terminal SENCE of the NPN transistor Q1 is VCC voltage (3.3V), making pin 4 of the HF-LPT270 chip high, thereby controlling the night light section 23 to remain in the off state. The angle between the lamp head 2 and the lamp post 1 is between 0° and 30°. The guide post 3 is pressed down by the cam surface 211, causing the microswitch 5 to open. The microswitch output voltage Vtest is about 300V. After being divided by R16, R17 and R29, When the input terminal of NPN transistor Q1 is at a high level of 3-5V, NPN transistor Q1 is turned on. The voltage of the output terminal SENCE of NPN transistor Q1 is grounded and is at a low level, making pin 4 of HF-LPT270 chip low, thereby controlling the night light section 23 to light up. When pin 9 of HF-LPT270 chip receives a continuous touch signal, the program controls the switching between the night light section 23 and the lighting section 22. During the switching process, the brightness of the lighting section 22 can only be 10% of the maximum brightness, so as to achieve a dim lighting effect at night, so as to prevent the heat from accumulating between the lamp head 2 and the lamp post 1 due to excessive brightness.
[0038] See Figures 5 to 7The lighting unit 22 includes a lamp housing 221, a PCB board 222, and a number of LED beads 223. The LED beads 223 face the ground, and there is no light above the lamp housing 221, which is conducive to illuminating the reading area. In order to dissipate the heat emitted by the LED beads 223 as quickly as possible, a heat dissipation aluminum plate 224 and copper foil 225 are attached to the back of the PCB board 222. The night light unit 23 includes a night light housing 231, night light LED beads 232, and a light guide plate 233. The light from the night light LED beads 232 is guided by the horizontal light guide plate 233. The light guide plate 233 is provided with a number of optical dots, which are evenly distributed to make the night light emitted by the night light unit 23 soft and uniform. The top of the night light housing 231 is provided with a hollow part 234, and the light guide plate 233 is aligned with the hollow part 234 and emits light upwards.
[0039] In this embodiment, the elongated lamp head 2 is divided into an illumination section 22 and a night light section 23, with the first hinge section 21 as the boundary. During the folding process of the elongated lamp head 2, the cam surface 211 drives the guide post 3 to gradually descend and trigger the micro switch 5. When the angle between the lamp head and the lamp post is between 0° and 30°, the micro switch is triggered to control the illumination section and the night light section. The night light section lights up or the brightness of the illumination section changes to 10% of the maximum illumination brightness, achieving two different effects of dim lighting at night.
Claims
1. LED desk lamp, characterized in that The lamp post and the long strip-shaped lamp head hinged to the lamp post; The lamp head comprises a first hinge part, a lighting part and a night light part, and the first hinge part is located between the lighting part and the night light part; A guide column, a spring and a micro switch are arranged in the lamp post, the first hinge part is provided with a cam surface, and the cam surface cooperates with the top of the guide column; When the included angle between the lamp head and the lamp post is between 0° and 30°, the night light part becomes bright, or the lighting part becomes dark.
2. The LED desk lamp of claim 1, wherein, The cam surface presses the guide column downward in the rotating process, and the guide column touches the micro switch.
3. The LED desk lamp of claim 1, wherein, The lighting part comprises a lamp shell, a PCB board and a plurality of LED lamp beads, and the LED lamp beads are directed to the ground.
4. The LED desk lamp of claim 3, wherein, The back of the PCB board is attached to a heat dissipation aluminum plate and a copper foil.
5. The LED desk lamp according to any one of claims 1-4, wherein, The night light part comprises a night light shell, night light LED lamp beads and a light guide plate.
6. The LED desk lamp of claim 5, wherein, The light of the night light LED lamp beads is guided by the horizontal light guide plate, the top of the night light shell is provided with a hollow part, and the light guide plate is aligned with the hollow part.
7. The LED desk lamp of claim 6, wherein, The light guide plate is provided with a plurality of optical dots.
8. The LED desk lamp of claim 5, wherein, When the included angle between the lamp head and the lamp post is between 30° and 90°, the lighting part has the maximum lighting brightness.
9. The LED desk lamp of claim 5, wherein, The lamp post is provided with a lamp holder at the bottom, and the lamp holder is provided with a touch part.
10. The LED desk lamp of claim 9, wherein, The second hinge part is arranged between the lamp post and the lamp holder.