LED classroom eye protection lamp with heat dissipation structure

Abstract

The utility model relates to the technical field of eye protection lamps, discloses an LED classroom eye protection lamp with a heat dissipation structure, and aims to solve the problem that the temperature is too high when the lamp is used for a long time. External airflow is sucked in and blown to the position close to the lamp panel through the cooling cavity, it is guaranteed that high-speed circulating airflow always exists outside in the using process of the lamp panel, the phenomenon that the temperature of the lamp panel is too high is avoided accordingly, and finally the periodic heat dissipation effect is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of eye protection lamps, and in particular to an LED classroom eye protection lamp with a heat dissipation structure. Background Art

[0002] The eye protection lamp is a desk lamp specially designed for lighting and eye protection. This desk lamp adopts special lighting technology and design to reduce eye fatigue and discomfort, and is particularly suitable for tasks that require long-term concentration, such as reading, writing or using a computer.

[0003] During the use of lamps, the greater the power of the bulb, the more heat it generates, and the temperature rises accordingly. If the heat cannot be dissipated in time, the temperature will continue to rise. The electronic components and materials inside the lamps tend to age faster at high temperatures, resulting in a shortened lamp life. In serious cases, excessively high temperatures may cause safety accidents such as fires, posing a threat to the personal safety of users. Therefore, the heat dissipation of lamps is an indispensable condition for the normal operation of lamps. Utility Model Content

[0004] The present application proposes an LED classroom eye protection lamp with a heat dissipation structure, which has the advantage of periodic heat dissipation and is used to solve the problem of excessive temperature of the lamp when it is used for a long time mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: an LED classroom eye protection lamp with a heat dissipation structure, comprising: a lampshade, a middle conductive column is arranged in the middle, a lamp board is fixedly installed at the bottom end of the middle conductive column, and a mounting column is fixedly connected to the top end of the middle conductive column; a lamp protection sheet, used to protect the lamp board, threadedly connected to the bottom of the lampshade; an exhaust hole, opened on the side wall of the lampshade, to realize the space at the bottom of the lamp board to communicate with the outside; a pressure relief hole, opened on the surface of the lamp board, used to realize rapid heat dissipation of the lamp board; a pressure relief groove, opened at the top end of the side of the lampshade, to realize the space at the top of the light board to communicate with the outside.

[0006] Furthermore, there are multiple exhaust holes, and the multiple exhaust holes are arranged in a circular shape at equal angles.

[0007] Furthermore, a middle partition is movably mounted on the outer side of the middle conductive column, and a cooling chamber is formed by the bottom of the middle partition, the inner side of the lampshade and the top of the lamp board, and a reset spring is arranged between the middle partition and the inner top of the lampshade.

[0008] Furthermore, a lifting magnetic block is fixedly installed at the bottom of the middle partition, and a cooling coil corresponding to the lifting magnetic block is fixedly installed on the surface of the lamp panel. When the cooling coil is energized, a magnetic force that repels the lifting magnetic block is generated.

[0009] Furthermore, a pressure rod is movably installed at the bottom of the middle partition, and a coil switch is fixedly installed at the top of the pressure rod. When the coil switch is turned on, the cooling coil will be energized and generate magnetism.

[0010] Furthermore, the pressure relief hole is set as an elongated hole.

[0011] Furthermore, a voltage contact plate located above the coil switch is movably mounted on the inner side of the middle partition, and a tension spring is arranged between the voltage contact plate and the inner side of the middle partition.

[0012] Furthermore, the lamp panel, the power supply and the main switch are connected in series, and the cooling coil is connected in series with the protection resistor and the coil switch and then connected in parallel with the lamp panel.

[0013] The utility model has the following beneficial effects:

[0014] The present application provides an LED classroom eye protection lamp with a heat dissipation structure, which not only has excellent lighting effects, but also incorporates innovative heat dissipation technology to ensure that the lamp maintains a low temperature during use. The core heat dissipation structure of the lamp includes a lamp panel, a lifting magnetic block, a cooling coil, a middle partition and a lampshade.

[0015] When the light board is powered on, a strong magnetic attraction is generated between the lifting magnet and the cooling coil, and this magnetic attraction changes periodically. This periodic magnetic attraction causes the middle partition to reciprocate inside the lampshade. The movement of the middle partition opens the entrance of the cooling chamber, allowing external air to flow into the cooling chamber. Subsequently, the middle partition moves in the opposite direction, blowing the inhaled external airflow toward the light board, forming a continuous high-speed circulation airflow.

[0016] The design concept of this heat dissipation structure is to use the principle of natural convection to draw the external cold air into the cooling chamber, and then blow the cold air to the light board through the reciprocating motion of the middle partition to take away the heat generated by the light board. This heat dissipation method is not only efficient, but also low in noise and will not interfere with students' study or work. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which constitute a part of the specification, illustrate embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application.

[0018] The present application can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure;

[0020] Figure 2 It is a schematic diagram of the overall internal three-dimensional structure;

[0021] Figure 3 for Figure 2 The enlarged structural diagram at E in the middle;

[0022] Figure 4 This is the overall front internal section plan;

[0023] Figure 5 This is a simplified diagram of the overall circuit control.

[0024] In the figure: 1. lampshade; 100. cooling chamber; 2. mounting column; 3. pressure relief groove; 4. exhaust hole; 5. lamp guard; 6. reset spring; 7. middle partition; 8. pressure relief hole; 9. lamp board; 10. middle conductive column; 11. lifting magnet; 12. cooling coil; 13. tension spring; 14. contact voltage plate; 15. coil switch; 16. pressure rod; 17. protection resistor; 18. main switch; 19. power supply. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] Embodiment 1

[0027] See also Figure 1 and Figure 2 It can be seen that the lampshade 1 in the present application is no different from the lamps currently on the market, including, an intermediate conductive column 10 arranged in the middle of the lampshade 1 for supporting and transmitting electric energy, a lamp board 9 located inside the lampshade 1 is fixedly installed at the bottom end of the intermediate conductive column 10, the lamp board 9 is used for emitting light, and is the core component of the lampshade 1, and the bottom of the lampshade 1 is threadedly connected with a lamp guard 5 for protecting the lamp board 9, and the top of the intermediate conductive column 10 is fixedly connected with a mounting clamp 2 for fixing the lampshade 1, and the mounting clamp 2 is screwed into the corresponding position to realize the supply of electric energy to the lampshade 1 and fixation.

[0028] The side wall of the lampshade 1 is provided with an exhaust hole 4. Figure 1 As can be seen from the figure, there are multiple exhaust holes 4, and the multiple exhaust holes 4 are arranged in a circular shape with equal angles, so that the space at the bottom of the lamp board 9 is connected to the outside to achieve heat dissipation.

[0029] Combination Figure 2 It can be seen that a pressure relief hole 8 is provided on the surface of the lamp board 9, and a pressure relief groove 3 is provided on the top of the side of the lamp cover 1, so that the space at the top of the lamp board 9 is communicated with the outside through the pressure relief groove 3.

[0030] According to common sense, when gas is heated, its density decreases, which causes the hot air flow to move upward. According to the content of this application, it can be known that during the application, when the lamp board 9 is heated, the hot air flow generated will flow upward and overflow from the pressure relief groove 3, while the cold air flow will be poured in from the exhaust hole 4, so that the lamp board 9 can be cooled down through the autonomous circulation of the air flow.

[0031] Embodiment 2

[0032] Further improvement on the basis of the first embodiment, although the first embodiment can be cooled autonomously, but as the temperature of the lamp board 9 continues to rise, the cooling intensity is obviously insufficient. In order to solve this problem, please refer to Figure 2-Figure 4 It can be seen that the outer movable sleeve of the middle conductive column 10 is provided with a middle partition 7 located above the lamp board 9, and the bottom of the middle partition 7, the inner side of the lamp cover 1 and the top of the lamp board 9 constitute a cooling chamber 100, and a reset spring 6 is arranged between the middle partition 7 and the inner top of the lamp cover 1, so that under the elastic force of the reset spring 6, the middle partition 7 is pushed downward, so that the air flow in the cooling chamber 100 is blown out from the cooling chamber 100 through the pressure relief hole 8 to the exhaust hole 4, so that the air flow with a certain pressure is blown out from the vicinity of the lamp board 9 through the middle partition 7, thereby enhancing the air flow rate near the lamp board 9, thereby enhancing the intensity of cooling.

[0033] In order to enable the middle partition 7 to periodically cool the lamp board 9 with airflow, a lifting magnetic block 11 is fixedly installed at the bottom of the middle partition 7, and a cooling coil 12 corresponding to the lifting magnetic block 11 is fixedly installed on the surface of the lamp board 9. When the cooling coil 12 is energized, a magnetic force that repels the lifting magnetic block 11 is generated, thereby realizing the upward movement of the middle partition 7 and squeezing the reset spring 6, thereby ensuring that sufficient airflow is accumulated in the cooling chamber 100.

[0034] A pressure rod 16 is movably installed at the bottom of the middle partition 7, and the pressure rod 16 can only reciprocate up and down along the bottom of the middle partition 7. A coil switch 15 is fixedly installed at the top of the pressure rod 16. When the coil switch 15 is turned on, the cooling coil 12 will be energized and generate magnetism.

[0035] During actual application, when the middle partition 7 is moved downward by the return spring 6, the air flow in the cooling chamber 100 is transported outward from the pressure-relieving hole 8 and finally flows to the outside through the exhaust hole 4. When the middle partition 7 is about to move to the top of the lamp board 9, the pressure rod 16 contacts the surface of the lamp board 9 in advance, so that the pressure rod 16 restricts the coil switch 15 from moving downward. As the middle partition 7 continues to move downward until the coil switch 15 is turned on, magnetic repulsion is generated between the cooling coil 12 and the lifting magnetic block 11, thereby pushing the middle partition 7 upward and causing the air flow to be sucked into the cooling chamber 100. At the same time, after the middle partition 7 drives the pressure rod 16 upward, the pressure rod 16 drags the coil switch 15 downward under its own gravity, so that the coil switch 15 releases the contact with the middle partition 7, thereby cutting off the power to the cooling coil 12, and repeats over and over again. As the cooling coil 12 is periodically energized, the middle partition 7 is periodically moved up and down, so that there is always a high-speed airflow near the lamp board 9.

[0036] Embodiment 3

[0037] A further improvement is made on the basis of the second embodiment, in which the pressure relief hole 8 is set as an elongated hole, so that when the airflow in the cooling chamber 100 passes through the pressure relief hole 8, on the one hand, the flow speed can be increased through the hole, and on the other hand, the middle partition 7 is prevented from descending too fast, thereby causing the middle partition 7 to move too frequently.

[0038] Combination Figure 3 and Figure 4 It can be seen that a contact voltage plate 14 located above the coil switch 15 is movably installed on the inner side of the middle partition 7, and a tension spring 13 is provided between the contact voltage plate 14 and the inner side of the middle partition 7, so that the contact voltage plate 14 is pulled upward and away from the coil switch 15 by the tension spring 13, so that the contact voltage plate 14 presses the coil switch 15.

[0039] For circuit layout, refer to Figure 5 It can be seen that the lamp board 9, the power supply 19 and the main switch 18 are connected in series to ensure that when the main switch 18 is started, the lamp board 9 can emit light normally, and the cooling coil 12 is connected in series with the protection resistor 17 and the coil switch 15 and then connected in parallel with the lamp board 9 to ensure that when the lamp board 9 is working, the coil switch 15 is periodically turned on, so that the cooling coil 12 works periodically, thereby ensuring that the lamp board 9 can continue to cool down during operation.

[0040] In actual application, when the middle partition 7 is moved downward by the reset spring 6, the pressure-relieving hole 8 is an elongated hole, which reduces the downward speed of the middle partition 7 and accumulates a certain pressure in the cooling chamber 100. At the same time, the pressure rod 16 moves outward under its own gravity, and the contact voltage plate 14 is further away from the coil switch 15 due to the increased pressure in the cooling chamber 100 and the pulling of the tension spring 13, thereby ensuring that the coil switch 15 will not be turned on during the downward movement of the middle partition 7.

[0041] When the middle partition 7 moves downward and makes the pressure rod 16 contact the light board 9, the pressure rod 16 limits the movement of the coil switch 15. As the middle partition 7 moves downward again, the contact voltage plate 14 contacts the coil switch 15. The coil switch 15 energizes the cooling coil 12, so that the middle partition 7 is quickly lifted upward by the magnetic repulsion between the cooling coil 12 and the lifting magnetic block 11. Since the pressure-relieving hole 8 is an elongated hole, when the middle partition 7 moves upward, the pressure in the cooling chamber 100 decreases rapidly, thereby forcing the contact voltage plate 14 to move downward, so that the contact voltage plate 14 is always pressed on the coil switch 15, ensuring that the coil switch 15 is continuously turned on. As the middle partition 7 quickly moves upward due to the magnetic repulsion between the cooling coil 12 and the lifting magnetic block 11, the pressure in the cooling chamber 100 is also continuously reduced, further enhancing the strength of the contact voltage plate 14 pressing on the coil switch 15.

[0042] Finally, when the middle partition 7 passes over the pressure relief groove 3, the pressure relief groove 3 and the cooling chamber 100 will be quickly connected, and the external airflow will quickly enter the cooling chamber 100, so that the gas pressure in the cooling chamber 100 is relatively equal to the external pressure. Under the pulling of the tension spring 13 on the voltage contact plate 14, the voltage contact plate 14 is moved away from the coil switch 15, and then, as the reset spring 6 pushes the middle partition 7 again, the airflow in the cooling chamber 100 is pressed out to the pressure relief hole 8.

[0043] During the application of this embodiment, on the one hand, the downward speed of the middle partition 7 is slowed down by the pressure-relief hole 8. On the other hand, when the airflow is sucked into the cooling chamber 100, the return flow of the pressure-relief hole 8 is slow, and the middle partition 7 that quickly ascends reaches the height of the pressure relief groove 3, a large amount of external cold airflow will be replenished into the cooling chamber 100, so that the cooling chamber 100 can blow the external cold airflow out of the pressure-relief hole 8, thereby enhancing the cooling efficiency.

Claims

1. An LED classroom eye protection lamp with a heat dissipation structure, characterized in that: include: A lampshade (1) is provided with an intermediate conductive column (10) in the middle, a lamp board (9) is fixedly mounted on the bottom end of the intermediate conductive column (10), and a mounting clamp column (2) is fixedly connected to the top end of the intermediate conductive column (10); A lamp protection sheet (5) is used to protect the lamp panel (9) and is threadedly connected to the bottom of the lampshade (1); An exhaust hole (4) is provided on the side wall of the lampshade (1) so as to enable the space at the bottom of the lamp panel (9) to communicate with the outside; The pressure-relieving holes (8) are provided on the surface of the lamp board (9) and are used to achieve rapid heat dissipation of the lamp board (9); The pressure relief groove (3) is provided at the top end of the side of the lampshade (1) so as to enable the space at the top of the lamp panel (9) to communicate with the outside.

2. The LED classroom eye protection lamp with a heat dissipation structure according to claim 1 is characterized in that: There are a plurality of exhaust holes (4), and the plurality of exhaust holes (4) are arranged in a ring shape at equal angles.

3. The LED classroom eye protection lamp with a heat dissipation structure according to claim 1, characterized in that: The outer side of the middle conductive column (10) is movably sleeved with a middle partition (7), and the bottom of the middle partition (7), the inner side of the lampshade (1) and the top of the lamp board (9) form a cooling chamber (100), and a return spring (6) is arranged between the middle partition (7) and the inner top of the lampshade (1).

4. The LED classroom eye protection lamp with a heat dissipation structure according to claim 3 is characterized in that: A lifting magnetic block (11) is fixedly mounted on the bottom of the middle partition (7), and a cooling coil (12) corresponding to the lifting magnetic block (11) is fixedly mounted on the surface of the lamp panel (9). When the cooling coil (12) is energized, a magnetic force is generated that repels the lifting magnetic block (11).

5. The LED classroom eye protection lamp with a heat dissipation structure according to claim 4 is characterized in that: A pressure rod (16) is movably mounted at the bottom of the middle partition (7), and a coil switch (15) is fixedly mounted at the top of the pressure rod (16). When the coil switch (15) is turned on, the cooling coil (12) is energized and generates magnetism.

6. The LED classroom eye protection lamp with a heat dissipation structure according to claim 5, characterized in that: The pressure relief hole (8) is set as an elongated hole.

7. The LED classroom eye protection lamp with a heat dissipation structure according to claim 5, characterized in that: A voltage contact plate (14) located above the coil switch (15) is movably mounted on the inner side of the middle partition (7), and a tension spring (13) is arranged between the voltage contact plate (14) and the inner side of the middle partition (7).

8. The LED classroom eye protection lamp with a heat dissipation structure according to claim 7, characterized in that: The lamp panel (9), the power supply (19) and the main switch (18) are connected in series, and the cooling coil (12) is connected in series with the protective resistor (17) and the coil switch (15) and then connected in parallel with the lamp panel (9).

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