An LED lamp capable of freely adjusting color temperature

Abstract

The utility model discloses an LED lamp capable of freely adjusting color temperature, comprising a mounting plate, a switch box, a potentiometer, a plurality of groups of high color temperature lamp beads and a plurality of groups of low color temperature lamp beads, and an explosion-proof lampshade is arranged on the lower wall of the mounting plate. The utility model arranges the potentiometer in a closed switch box, and the knob and the switch box are adsorbed and transmitted by a first strong magnetic block and a second strong magnetic block. There is no dynamic seal on the outer wall of the switch box, which avoids the problem of seal failure caused by friction and wear, and greatly improves the explosion-proof effect. The switch box is filled with an inert gas higher than the atmospheric pressure, which can better play the explosion-proof role. The inert gas pressure can be observed through a barometer. If the pressure decreases, it means that there is damage. The problem can be found in time by daily inspection, and the utility model is highly practical.

Description

Technical Field

[0001] The utility model relates to the technical field of LED lamps, in particular to an LED lamp capable of freely adjusting color temperature. Background Art

[0002] With the continuous promotion and wide application of LED lamps, multi-color temperature LED lamps are gradually beginning to shine in the fields of intelligent lighting and humanized lighting. In today's fierce competition among ordinary LED lamps, LED multi-color temperature lamps have become a unique product in the LED lighting industry. When adjusting the color temperature, LED multi-color temperature lamps usually use potentiometers in combination with high color temperature lamp beads and low color temperature lamp beads. Potentiometers are prone to produce electric sparks during the adjustment process, resulting in the existing LED multi-color temperature lamps being unable to be used in flammable and explosive places such as chemicals, mining areas, natural gas, and gas stations. Therefore, there is an urgent need for an LED color temperature adjustment lamp with explosion-proof function to meet market demand. For this purpose, a technical expert on the market has proposed an explosion-proof LED color temperature adjustment lamp, which includes a lamp holder installed under the top wall mounting plate and a flameproof box installed on the side wall. A lampshade is provided at the bottom of the lamp holder, and an LED lamp board is provided on the lamp holder inside the lampshade. The LED lamp board is provided with multiple rows of high color temperature lamp beads and low color temperature lamp beads. A circuit board is provided in the flameproof box, and a potentiometer is provided on the circuit board. A sealing sleeve is provided on one side of the flameproof box, and a connecting rod is rotatably connected to the sealing sleeve. A sealing member is provided between the connecting rod and the sealing sleeve, and one end of the connecting rod is connected to the rotating rod of the potentiometer, and the other end of the connecting rod is connected to a rotating button. The rotating button is located outside the flameproof box, and the circuit board is electrically connected to the LED lamp board. This technology sets the potentiometer in an explosion-proof box to achieve explosion-proof effect. However, the connecting rod and the sealing sleeve are sealed by multiple seals. There is rotational friction between the connecting rod and the sealing sleeve during adjustment, and the seal will inevitably be worn and not sealed. Therefore, it is necessary to further improve the structure of LED lamps that can freely adjust the color temperature for use in explosion-proof occasions. Utility Model Content

[0003] The purpose of the utility model is to solve the shortcomings of the prior art and to provide an LED lamp capable of freely adjusting the color temperature.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an LED lamp capable of freely adjusting color temperature, comprising a mounting plate, a switch box, a potentiometer, a plurality of groups of high color temperature lamp beads and a plurality of groups of low color temperature lamp beads, the lower wall of the mounting plate is provided with an explosion-proof lampshade, the lower wall of the mounting plate and a lamp board located inside the explosion-proof lampshade is provided, the plurality of groups of high color temperature lamp beads and low color temperature lamp beads are all provided on the lower wall of the lamp board, the switch is composed of a front shell and a rear shell provided on the rear side of the front shell, the front shell and the rear shell are sealed by a sealing strip, the interior of the switch box is filled with protective gas, and the An air inlet connector for injecting protective gas is provided on the upper wall of the front shell, a one-way valve is provided inside the air inlet connector, and the air inlet connector controls the protective gas in the switch box to prevent leakage through the one-way valve. A pressure display structure for observing the internal pressure conditions is provided on the front wall of the front shell near the upper right corner, a fixed column is fixedly connected to the front wall of the front shell at a center position, a knob is rotatably connected to the outer wall of the fixed column through a bearing, a damping structure for controlling the rotation resistance of the knob is provided between the knob and the fixed column, and a transmission structure for transmission is provided between the knob and the potentiometer.

[0005] As a further description of the above technical solution:

[0006] The protective gas is an inert gas, and the pressure of the inert gas in the switch box is higher than the external air pressure.

[0007] As a further description of the above technical solution:

[0008] The pressure display structure is a barometer, which is fixedly connected to the front wall of the front shell. The rear end of the barometer passes through the front wall of the front shell and extends into the interior of the front shell. The barometer and the front shell are sealed by a sealing ring.

[0009] As a further description of the above technical solution:

[0010] The damping structure is a damping ring, and the damping ring is arranged between the fixing column and the knob.

[0011] As a further description of the above technical solution:

[0012] The transmission structure includes a first strong magnetic block and a second strong magnetic block. The input end of the potentiometer is fixedly connected to a connecting shaft. The first strong magnetic block is fixedly connected to the end of the connecting shaft away from the potentiometer. The front wall of the first strong magnetic block is slidably connected to the inner rear wall of the front shell. The second strong magnetic block is arranged on the rear wall of the knob and is located on the outside of the fixed column. The second strong magnetic block is opposite to the first strong magnetic block in front and back.

[0013] As a further description of the above technical solution:

[0014] The multiple groups of high color temperature lamp beads and low color temperature lamp beads are equally distributed in a circle on the lower wall of the lamp board.

[0015] The utility model has the following beneficial effects:

[0016] 1. Compared with the prior art, the LED lamp capable of freely adjusting the color temperature has the potentiometer arranged in a closed switch box. The knob and the switch box are adsorbed and transmitted by the first strong magnetic block and the second strong magnetic block. There is no dynamic seal on the outer wall of the switch box, thus avoiding the problem of seal failure caused by friction and wear, and greatly improving the explosion-proof effect.

[0017] 2. Compared with the existing technology, the LED lamp that can freely adjust the color temperature has an inert gas higher than the atmospheric pressure filled in the switch box, which can better play an explosion-proof role. The inert gas pressure can be observed through the barometer. If the pressure drops, it means there is damage. Daily inspections can promptly detect problems, and it is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of an LED lamp capable of freely adjusting color temperature proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the mounting plate and lamp panel connection structure of an LED lamp capable of freely adjusting color temperature proposed by the utility model;

[0020] Figure 3 The utility model provides a partial sectional view of the internal structure of a switch box of an LED lamp capable of freely adjusting color temperature.

[0021] Legend:

[0022] 1. Mounting plate; 2. Explosion-proof lampshade; 3. Back shell; 4. Front shell; 5. Air inlet connector; 6. Barometer; 7. Knob; 8. Lamp board; 9. High color temperature lamp beads; 10. Low color temperature lamp beads; 11. Potentiometer; 12. Connecting shaft; 13. First strong magnetic block; 14. Inert gas; 15. Second strong magnetic block; 16. Damping ring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Reference Figures 1 to 3The utility model provides an LED lamp with freely adjustable color temperature: comprising a mounting plate 1, a switch box, a potentiometer 11, a plurality of groups of high color temperature lamp beads 9 and a plurality of groups of low color temperature lamp beads 10, an explosion-proof lampshade 2 is arranged on the lower wall of the mounting plate 1, a lamp board 8 is arranged on the lower wall of the mounting plate 1 and located inside the explosion-proof lampshade 2, a plurality of groups of high color temperature lamp beads 9 and a plurality of low color temperature lamp beads 10 are arranged on the lower wall of the lamp board 8, a plurality of groups of high color temperature lamp beads 9 and a plurality of low color temperature lamp beads 10 are distributed in a circular shape on the lower wall of the lamp board 8 in sequence, a thyristor is arranged in the potentiometer 11, the brightness of the high color temperature lamp beads 9 and the low color temperature lamp beads 10 can be adjusted by adjusting the output power amplitude of the thyristor, and light of different color temperatures can be realized by high color temperature lamp beads 9 and low color temperature lamp beads 10 of different brightness, so as to achieve the effect of free adjustment, and the lamp board 8 and the potentiometer 11 are connected in an explosion-proof manner through the existing technology on the market;

[0025] like Figure 1 , Figure 3 As shown, in order to isolate the potentiometer 11 from the outside, the switch is composed of a front shell 4 and a rear shell 3 arranged at the rear side of the front shell 4, the front shell 4 and the rear shell 3 are sealed by a sealing strip, the switch box is filled with protective gas, the upper wall of the front shell 4 is provided with an air inlet joint 5 for injecting protective gas, a one-way valve is arranged inside the air inlet joint 5, and the air inlet joint 5 controls the protective gas in the switch box to prevent leakage through the one-way valve, the protective gas is an inert gas 14, the pressure of the inert gas 14 in the switch box is higher than the external air pressure, the potentiometer 11 is arranged inside the switch box, and the switch box is all statically sealed, there is no situation where the seal fails due to wear, and the filling of the inert gas 14 can play a better explosion-proof role for the potentiometer 11;

[0026] like Figure 1 As shown, in order to conveniently check whether the pressure of the internal inert gas 14 changes, a pressure display structure for observing the internal pressure is provided on the front wall of the front shell 4 and near the upper right corner. The pressure display structure is a barometer 6. The barometer 6 is fixedly connected to the front wall of the front shell 4. The rear end of the barometer 6 penetrates the front wall of the front shell 4 and extends into the interior of the front shell 4. The barometer 6 and the front shell 4 are sealed by a sealing ring. The pressure of the inert gas 14 is higher than the external air pressure, which can be seen more intuitively on the barometer 6. When the pressure value of the barometer 6 drops, it can be judged that an accidental damage has occurred somewhere in the switch box, and the use can be stopped immediately and repairs can be reported, which plays a good preventive role.

[0027] like Figure 1 , Figure 3As shown, in order for the knob 7 to drive the potentiometer 11 remotely, a fixed column is fixedly connected to the front wall and the center position of the front shell 4, and the outer wall of the fixed column is rotatably connected to the knob 7 through a bearing, a damping structure for controlling the rotation resistance of the knob 7 is provided between the knob 7 and the fixed column, and a transmission structure for transmission is provided between the knob 7 and the potentiometer 11, and the damping structure is a damping ring 16, which is provided between the fixed column and the knob 7, and the transmission structure includes a first strong magnetic block 13 and a second strong magnetic block 15, and the input end of the potentiometer 11 is fixedly connected to the connecting shaft 12, and the first strong magnetic block 13 is fixedly connected to the end of the connecting shaft 12 away from the potentiometer 11, The front wall of the first strong magnetic block 13 is slidably connected to the inner rear wall of the front shell 4, and the second strong magnetic block 15 is arranged on the rear wall of the knob 7 and is located on the outside of the fixed column. The second strong magnetic block 15 and the first strong magnetic block 13 are opposite to each other front and back. When the knob 7 rotates, the potentiometer 11 is driven to rotate through the mutual adsorption between the second strong magnetic block 15 and the first strong magnetic block 13 to achieve the purpose of adjustment. The damping ring 16 is a common rubber sleeve with a certain hardness on the market, which plays a damping role. When no force is applied or the force applied is less than the resistance of the damping ring 16, the knob 7 does not rotate, thereby avoiding malfunction. When the force is greater than the resistance of the damping ring 16 when rotating the knob 7, the knob 7 can be rotated.

[0028] Working principle: The potentiometer 11 is provided with a thyristor. By adjusting the output power amplitude of the thyristor, the brightness of the high color temperature lamp beads 9 and the low color temperature lamp beads 10 can be adjusted. The high color temperature lamp beads 9 and the low color temperature lamp beads 10 with different brightness can realize light of different color temperatures, so as to achieve the effect of free adjustment. The potentiometer 11 is arranged inside the switch box. The switch box is statically sealed, and there is no situation that the seal fails due to wear. Filling with inert gas 14 can play a better explosion-proof role for the potentiometer 11. The pressure of the inert gas 14 is higher than the external air pressure. It can be seen more intuitively on the barometer 6. When the explosion If the pressure value of the barometer 6 drops, it can be determined that an accidental damage has occurred somewhere in the switch box. The switch box can be stopped from use immediately and repaired, which plays a good preventive role. When the knob 7 is rotated, the second strong magnetic block 15 and the first strong magnetic block 13 are attracted to each other, driving the potentiometer 11 to rotate, thereby achieving the purpose of adjustment. The damping ring 16 is a common rubber sleeve with a certain hardness on the market, which plays a damping role. When no force is applied or the force applied is less than the resistance of the damping ring 16, the knob 7 does not rotate, thereby avoiding malfunction. When the force is greater than the resistance of the damping ring 16 when rotating the knob 7, the knob 7 can be rotated.

[0029] Finally, it should be noted that the above are only preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the previous embodiments, those skilled in the art can still modify the technical solutions recorded in the previous embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An LED lamp capable of freely adjusting color temperature, characterized in that: The invention comprises a mounting plate (1), a switch box, a potentiometer (11), a plurality of groups of high color temperature lamp beads (9) and a plurality of groups of low color temperature lamp beads (10); the lower wall of the mounting plate (1) is provided with an explosion-proof lampshade (2); the lower wall of the mounting plate (1) and inside the explosion-proof lampshade (2) is provided with a lamp board (8); the plurality of groups of high color temperature lamp beads (9) and low color temperature lamp beads (10) are all provided on the lower wall of the lamp board (8); the switch comprises a front shell (4) and a rear shell (3) provided on the rear side of the front shell (4); the front shell (4) and the rear shell (3) are sealed by a sealing strip; the interior of the switch box is filled with protective gas; the upper wall of the front shell (4) is provided with a An air inlet connector (5) is provided for injecting protective gas, a one-way valve is provided inside the air inlet connector (5), and the air inlet connector (5) controls the protective gas in the switch box to prevent leakage through the one-way valve. A pressure display structure for observing the internal pressure is provided on the front wall of the front shell (4) near the upper right corner. A fixed column is fixedly connected to the front wall of the front shell (4) and at the center. A knob (7) is rotatably connected to the outer wall of the fixed column through a bearing. A damping structure for controlling the rotational resistance of the knob (7) is provided between the knob (7) and the fixed column. A transmission structure for transmission is provided between the knob (7) and the potentiometer (11).

2. The LED lamp capable of freely adjusting color temperature according to claim 1, characterized in that: The protective gas is an inert gas (14), and the pressure of the inert gas (14) in the switch box is higher than the external air pressure.

3. The LED lamp capable of freely adjusting color temperature according to claim 2, characterized in that: The pressure display structure is a barometer (6), which is fixedly connected to the front wall of the front shell (4), and the rear end of the barometer (6) penetrates the front wall of the front shell (4) and extends into the interior of the front shell (4), and the barometer (6) and the front shell (4) are sealed by a sealing ring.

4. The LED lamp capable of freely adjusting color temperature according to claim 3, characterized in that: The damping structure is a damping ring (16), and the damping ring (16) is arranged between the fixing column and the knob (7).

5. The LED lamp capable of freely adjusting color temperature according to claim 4, characterized in that: The transmission structure comprises a first strong magnetic block (13) and a second strong magnetic block (15); the input end of the potentiometer (11) is fixedly connected to a connecting shaft (12); the first strong magnetic block (13) is fixedly connected to an end of the connecting shaft (12) away from the potentiometer (11); the front wall of the first strong magnetic block (13) is slidably connected to the inner rear wall of the front shell (4); the second strong magnetic block (15) is arranged on the rear wall of the knob (7) and is located outside the fixed column; the second strong magnetic block (15) and the first strong magnetic block (13) are opposite to each other front and back.

6. The LED lamp capable of freely adjusting color temperature according to claim 5, characterized in that: The plurality of groups of high color temperature lamp beads (9) and low color temperature lamp beads (10) are distributed in sequence on the lower wall of the lamp board (8) in a circular and equally divided manner.

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