CN105135266A - Extensible LED table lamp - Google Patents

Abstract

The invention relates to an expandable LED desk lamp, comprising a base with a light pole, at least one LED lighting module is arranged on the top of the light pole, and the LED lighting module includes a heat sink, a PCB board and LED lens, LED chips are evenly distributed on the PCB board, the top of the light pole and the rear of the radiator are provided with interlocking dovetail groove structures, and the side wall of the radiator is provided with an I-shaped fixing frame , the other side wall is provided with an I-shaped fixing groove engaged with the fixing frame. The number of modules of the lamp can be changed to meet different illuminance requirements.

Description

An expandable LED desk lamp

technical field

The invention relates to an expandable LED desk lamp.

Background technique

Traditional LED table lamps only have one lighting module and the length of the lamp pole cannot be changed freely, so they can only meet the use requirements of a certain lighting area at a certain lighting distance. . For example, an LED table lamp that can meet the illumination requirements is used on a lighting surface of 0.5 square meters. When the area of the lighting surface increases to 1 square meter or larger, it cannot be used normally. The lighting effect is greatly weakened and cannot meet the requirements of use. It is necessary to use multiple desk lamps to meet the lighting requirements. At the same time, since the light-emitting angle of the lamp is limited by glare control, it is impossible to increase the illuminated area by changing the light-emitting angle. Therefore, there is an urgent need for a desk lamp that can flexibly expand the lighting module and the length of the lamp pole can be freely transformed.

The application number is: 201310025080.1 "LED desk lamp".

This patent discloses an LED desk lamp. The lamp only includes an LED lighting module. The incident light generated by an LED light source passes through the reflective cup, and then it is reflected on the surface of the inner cavity of the reflective cup and irradiates the diffuser plate. The board shines out of the light fixture. The main problem of this solution is that it is only a single lighting module, which cannot be used in a modular way. There is no benefit in practical use. ①The number of LED lighting modules of the lamp is fixed, which can only meet the illuminance requirements of one lighting area; In this way, the illuminance can meet the demand; ③ It is troublesome to replace the lighting module of the lamp. Once a problem occurs, the whole lamp cannot be used, causing economic losses.

Contents of the invention

The present invention makes improvements to the problems existing in the above-mentioned prior art, that is, the technical problem to be solved by the present invention is to provide an expandable LED desk lamp, so that the number of modules of the lamp can be changed to meet different illumination requirements.

In order to solve the above technical problems, the technical solution of the present invention is: an expandable LED desk lamp, comprising a base with a light pole, at least one LED lighting module is arranged on the top of the light pole, and the LED lighting module includes from The heat sink, PCB board and LED lens are arranged in sequence from top to bottom. LED chips are evenly distributed on the PCB board. The top of the light pole and the rear of the heat sink are all provided with interlocking dovetail groove structures. The heat sink One side wall is provided with an I-shaped fixing frame, and the other side wall is provided with an I-shaped fixing groove engaged with the fixing frame.

Further, the LED lighting module needs secondary optical design so that its lighting effects can meet the requirements of national standards.

Further, the light pole is a telescopic light pole, a metal hose light pole or a foldable light pole.

Further, after the length of the light pole is changed, the illuminance of the target plane is kept constant by adding LED lighting modules.

Further, several pieces of heat dissipation fins are evenly distributed on the top of the heat sink, and the heat dissipation fins are arranged in a high middle and low sides.

Compared with the prior art, the present invention has the following beneficial effects: the device can select the number of modules used according to the specific usage scenarios, realizes the dynamic adjustment of the lighting effect of the lamp, and reduces the difficulty of light distribution design of the lamp; the lighting module of the lamp The maintenance is simple and convenient, which can bring economic benefits to users.

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the embodiment of the present invention with three lighting modules.

Fig. 2 is a schematic diagram of the connection between the lighting module and the light pole in the embodiment of the present invention.

Fig. 3 is a schematic diagram of the structure of the lighting module in the embodiment of the present invention.

In the figure: 1-base, 2-light pole, 21-dovetail groove structure, 3-lighting module, 31-radiator, 32-PCB board, 33-LED lens, 34-fixing frame, 35-fixing slot, 36 - Cooling fins.

Detailed ways

Embodiment 1: As shown in Figures 1 to 3, an expandable LED desk lamp includes a base 1 with a light pole 2, and three LED lighting modules 3 are arranged on the top of the light pole 2, and the LED lighting module 3 includes a heat sink 31, a PCB board 32 and an LED lens 33 arranged sequentially from top to bottom, the PCB board 32 is evenly distributed with LED chips, and the top of the light pole and the rear of the heat sink are provided with interlocking dovetails Groove structure 21 , one side wall of the radiator 31 is provided with an I-shaped fixing frame 34 , and the other side wall is provided with an I-shaped fixing groove 35 engaged with the fixing frame.

In this embodiment, the light pole 2 is a telescopic light pole.

In this embodiment, several pieces of heat dissipation fins 36 are evenly distributed on the top of the heat sink, and the heat dissipation fins are arranged in a high middle and low sides.

When the target lighting surface is small, only a single module is needed, and the height of the light pole is at the lowest state at this time. When the target lighting surface is large, by changing the height of the light pole, the lighting area increases by the square of the height of the light pole, that is, when the height of the light pole is stretched to twice the original height, the lighting area expands to the original Four times, at this time, only need to increase the number of lighting modules of the LED desk lamp to four times the original, to keep the illuminance of the target plane unchanged.

The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the present invention.

Claims (5)

1. An expandable LED desk lamp, characterized in that: it includes a base with a light pole, at least one LED lighting module is arranged on the top of the light pole, and the LED lighting module includes heat dissipation devices arranged sequentially from top to bottom LED chips are evenly distributed on the PCB board, the top of the light pole and the rear of the radiator are provided with interlocking dovetail groove structures, and the side wall of the radiator is provided with working The other side wall of the glyph-shaped fixing frame is provided with an I-shaped fixing groove engaged with the fixing frame. 2. The expandable LED desk lamp according to claim 1, characterized in that: the LED lighting module needs a secondary optical design so that its lighting effect can meet the requirements of national standards. 3. The expandable LED desk lamp according to claim 1, wherein the light pole is a telescopic light pole, a metal hose light pole or a foldable light pole. 4. The expandable LED desk lamp according to claim 1, characterized in that: the top of the radiator is evenly distributed with several pieces of heat dissipation fins, and the heat dissipation fins are arranged in a high middle and low sides. 5. The expandable LED desk lamp according to claim 3, characterized in that, after the length of the light pole is changed, the illuminance of the target plane is kept constant by adding LED lighting modules.