A heat dissipation type LED downlight with variable light effect

Abstract

The present invention discloses a heat-dissipating LED downlight with variable light effects, comprising an aluminum substrate for mounting a lamp board and an LED lamp holder for mounting the aluminum substrate, wherein the downlight also comprises a ventilation mechanism, wherein the ventilation mechanism comprises air holes opened in the LED lamp holder and passing through from left to right, and also comprises an opening opened at the inner ring wall of the outer panel, the opening being connected to the perforation opened at the back of the outer panel through the inner hollow of the outer panel, and the perforation is located in the space between the LED lamp holder and the protective vertical tube. The heat-dissipating LED downlight with variable light effects redesigns the supporting structure that matches the LED light source and the circuit board in the downlight, significantly improves its overall heat dissipation and cooling effect, and does not require a highly centralized electric control unit for corresponding control, is energy-saving and environmentally friendly, and has stable functions, and reduces the accumulation of internal and external dust caused by ventilation while ensuring the cooling effect by using ventilation and heat exchange.

Description

Technical Field

[0001] The invention relates to the technical field of LED lamps, in particular to a heat-dissipating LED downlight with changeable light effects. Background Art

[0002] A color-changeable LED downlight refers to a downlight that controls the current and voltage of the lamp beads and uses a common cathode or common anode method to enable a single LED lamp to emit different colors, or uses a combination of multiple groups of LED lamps of different colors in a downlight mechanism to switch the lighting effect by controlling different lights. For example, the prior art discloses an LED downlight with announcement number CN201680195U, which includes a driver, a lamp cup, an LED light source, inner and outer rings, the driver is installed in the lamp cup, the lamp cup and the inner ring are connected, the LED light source and the driver are connected, a light-transmitting sheet is provided at the bottom of the lamp cup, and the inner and outer rings fix the lamp cup and the light-transmitting sheet; the LED light source is composed of LED lamp beads, which are installed in the lamp cup and connected to the driver. The application has a simple structure. It adopts a point light source, i.e., LED lamp beads, as the light source of the lamp, and directly installs the LED lamp beads on the PCB and connects them to the driver. The PCB light source and the driver are integrated to facilitate installation. In addition, due to the advantages of the LED lamp beads, such as small size, centralized arrangement, and low power consumption, the utility model has sufficient light source, uniform and soft light, is not easy to dazzle, consumes less power, is easy to dissipate heat, is easy to assemble, and has a longer life.

[0003] Another example is a LED downlight with remote control dimming and color adjustment, which is disclosed in the prior art with the publication number CN102518969A. The technical problem to be solved is to provide an LED energy-saving lamp with remote control function and dimmable color adjustment to increase the variability of light color. Its structure includes: an LED downlight main body, a LED light source color group with different colors installed in the downlight, so that the downlight emits different colors of light, a lamp remote control receiving terminal ID code setting receiving device and a current regulator are provided at the lamp head, and the current size can be adjusted to change the brightness of the lamp, the power supply installation line: divided into live wire a, ground wire b, neutral wire c, downlight installation shrapnel and downlight remote control. The present invention uses LED light source to emit light, which can save electric energy, and uses remote control operation to adjust the brightness of the light through the current regulator, and can be adjusted to different colors of colored light. The light color is variable, which improves people's life interest and saves energy.

[0004] The improvement direction of the above-mentioned existing technologies is generally focused on reducing energy consumption and more convenient color regulation. However, since downlights involve more electronic control components and the operating load of lamp bead semiconductors is higher, the internal structure of traditional downlights cannot meet the cooling requirements of such multi-lighting effect LED lamps and their circuit boards, and the design needs to be strengthened and improved. Summary of the invention

[0005] The purpose of the present invention is to provide a heat-dissipating LED downlight with variable light effects, so as to solve the problem that the improvement direction of the prior art proposed in the above background technology generally focuses on reducing energy consumption and more convenient color regulation, but because the downlight involves more electronic control components and the operating load of the lamp bead semiconductor is higher, the internal structure of the traditional downlight cannot meet the cooling requirements of this type of multi-lighting effect LED lamp and its circuit board, and the design needs to be strengthened and improved.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a heat-dissipating LED downlight with variable lighting effects, comprising an aluminum base plate for mounting a lamp board and an LED lamp holder for mounting the aluminum base plate, the LED lamp holder being wrapped by a protective vertical cylinder, and the bottom end of the protective vertical cylinder being fixed to the back of an outer panel, wherein a reflective bowl mounted on the outer panel and a light-transmitting plate at its bottom are used to reflect and soften the light emitted by the lamp board, the downlight also comprises a ventilation mechanism, wherein the ventilation mechanism comprises air holes opened in the LED lamp holder and passing through left and right, and also comprises an opening opened at the inner ring wall of the outer panel, the opening is connected with a through hole opened on the back of the outer panel through the internal hollow of the outer panel, and the through hole is located in the space between the LED lamp holder and the protective vertical cylinder.

[0007] As a further feature, an opening and closing mechanism is also installed in the LED lamp holder, and the opening and closing mechanism automatically opens or closes the air hole according to the temperature change in the downlight.

[0008] As a further feature, the opening and closing mechanism comprises a first metal sheet made of a memory alloy, and the first metal sheet completely covers the air hole from the outer wall of the LED lamp holder.

[0009] Furthermore, the middle section of the first metal sheet is deformed to bulge outward after being heated.

[0010] As a further feature, the outer wall of the first metal sheet is also connected to a heat-conducting member, wherein the rear end of the heat-conducting member passes through to the outside of the protective vertical cylinder.

[0011] As a further feature, the heat-conducting member includes a horizontal cylinder penetrating and fixed on the protective vertical cylinder and a horizontal rod fixed on the first metal sheet, and the horizontal rod is horizontally slidably and telescopically installed in the horizontal cylinder.

[0012] As a further feature, the inner diameter of the cross tube increases from the inner end to the outer end, and a baffle is provided at the narrow inner diameter portion and is vertically distributed and fixed to the outer end of the cross bar.

[0013] As a further feature, the opening and closing mechanism comprises a ring body and a second metal sheet which is also a memory alloy, wherein the ring body is vertically slidably installed in the space between the protective vertical tube and the outer wall of the LED lamp holder.

[0014] Furthermore, the inner wall of the ring body in the initial state covers the lower half opening area of ​​the pore.

[0015] As a further feature, the inner end of the second metal sheet is mounted on the outer wall of the LED lamp holder in a manner that does not completely cover the upper opening area of ​​the air hole, while the middle section of the second metal sheet is connected to the upper end surface of the ring body.

[0016] As a further feature, the rear end of the second metal sheet passes through the protective vertical cylinder and is attached to the outer side wall of the protective vertical cylinder.

[0017] As a further feature, a vertical through-channel is provided in the ring body, which is initially blocked by a vertical rod fixed in the protective vertical cylinder, and after the ring body is completely moved downward, the blocking of the channel by the vertical rod is released.

[0018] As a further feature, the lower end surface of the ring body is also connected to a transverse plate via an elastic rope body. In an initial state, the transverse plate blocks below the through hole, and the transverse plate follows the movement of the ring body to release the blockage of the through hole.

[0019] Compared with the prior art, the beneficial effects of the present invention are: the heat-dissipating LED downlight with variable light effects has a redesigned supporting structure that matches the LED light source and circuit board in the downlight, which significantly improves its overall heat dissipation and cooling effect, and does not require a highly centralized electronic control unit for corresponding control. It is energy-saving, environmentally friendly and has stable functions. It also utilizes ventilation and heat exchange to ensure the cooling effect while reducing the accumulation of internal and external dust caused by ventilation, as shown in the following content.

[0020] 1. The design of hole structures such as pores and perforations, and the unique position distribution of pores, allow the heat generated and transferred by the circuit board and the substrate to be evenly dissipated through the pores, thus achieving better ventilation and cooling effects compared to traditional technologies.

[0021] 2. The use of the first metal sheet can, on the one hand, utilize the blocking of the pores in the normal state to achieve the effect of preventing dust from invading the interior, and on the other hand, utilize the characteristics of the temperature-sensitive deformation effect of the memory alloy to generate high temperature after the downlight is running and guide the deformation of the first metal sheet to release the blocking of the pores and achieve the cooling effect;

[0022] Furthermore, the use of the heat conducting member can utilize the connection between the metal sheet and the heat conducting member to achieve further heat conduction, thereby increasing the heat dissipation and cooling path and improving the cooling effect;

[0023] Furthermore, the structural combination of the horizontal cylinder and the horizontal rod in combination with the baffle can not only have the heat conduction function, but also guide the movement of the baffle and open up new air flow exchange channels after the metal sheet is deformed, thereby realizing multi-channel ventilation and cooling.

[0024] 3. The structural design of the second metal sheet and the ring body can, on the one hand, also utilize the high-temperature deformation of the memory alloy metal sheet to drive the ring body to move and release the blockage of the pores to achieve a ventilation effect; on the other hand, the ring body and the second metal sheet can also utilize the incomplete coverage and blockage of the pores in the initial state to achieve auxiliary cooling inside the LED lamp holder;

[0025] Furthermore, the movement of the ring body can also change the air pressure in the internal space of the protective vertical cylinder below it, guide the internal gas to actively pass through the perforations and spray out from the openings, thereby achieving auxiliary dust airflow cleaning on the outer surface of the light-transmitting plate in the lampshade. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0027] Figure 2 This is a schematic diagram of the internal structure of the protective vertical cylinder of the present invention;

[0028] Figure 3 It is a schematic diagram of the cross-sectional structure of the outer panel of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of an LED lamp holder according to the second embodiment of the present invention;

[0030] Figure 5 is a schematic diagram of the structure of the first metal sheet after deformation of the present invention;

[0031] Figure 6 This is a schematic diagram of the structure of an LED lamp holder according to Embodiment 3 of the present invention;

[0032] Figure 7 It is a schematic diagram of the cross-section structure of the horizontal cylinder of the present invention;

[0033] Figure 8 This is a schematic diagram of the overall structure of Embodiment 4 of the present invention;

[0034] Fig. 9 For the present invention Figure 8 Schematic diagram of the internal structure of the middle protective vertical cylinder;

[0035] Fig.10 This is a schematic diagram of the second metal sheet distribution structure of the present invention;

[0036] Fig.11 It is a schematic diagram of the structure after the ring body of the present invention moves downward.

[0037] In the figure: 1. LED lamp holder; 2. protective vertical cylinder; 3. outer panel; 4. lamp board; 5. light-transmitting plate; 6. air hole; 7. perforation; 8. opening; 9. first metal sheet; 10. cross bar; 11. baffle; 12. cross cylinder; 13. second metal sheet; 14. ring body; 15. channel; 16. vertical rod; 17. cross plate. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figure 1-Figure 11 , the present invention provides the following technical solutions:

[0040] Embodiment 1: The solution disclosed in this embodiment is mainly to solve the problems existing in the prior art, such as Figure 1-Figure 3 As shown, it includes an aluminum substrate for installing a lamp board 4 and an LED lamp holder 1 for installing the aluminum substrate, the LED lamp holder 1 is wrapped by a protective vertical tube 2, and the bottom end of the protective vertical tube 2 is fixed to the back of an outer panel 3, wherein a reflective bowl installed on the outer panel 3 and a light-transmitting plate 5 at its bottom are used to reflect and soften the light emitted by the lamp board 4, and the downlight also includes a ventilation mechanism, wherein the ventilation mechanism includes an air hole 6 opened in the LED lamp holder 1 and passing through the left and right sides, and also includes an opening 8 opened at the inner ring wall of the outer panel 3, the opening 8 is connected with a through hole 7 opened on the back of the outer panel 3 through the internal hollow part of the outer panel 3, and the through hole 7 is located in the space between the LED lamp holder 1 and the protective vertical tube 2. Compared with the relatively closed structural design in the traditional scheme, when the circuit board and the lamp beads in the LED lamp holder 1 generate high heat during long-term operation, the airflow inside and outside the downlight will flow through the air hole 6, the through hole 7 and the opening 8, thereby increasing the heat dissipation and cooling effect on the inside of the downlight.

[0041] Embodiment 2: The problem to be solved in this embodiment is still heat dissipation. However, on the basis of heat dissipation, it is also necessary to ensure that dust enters the interior of the lamp body through the heat dissipation mechanism after long-term use. Therefore, this embodiment discloses the following solution to solve the above problem, such as Figure 4-Figure 5As shown, an opening and closing mechanism is also installed in the LED lamp holder 1, and the opening and closing mechanism automatically opens or closes the air hole 6 according to the temperature change in the tube lamp. The opening and closing mechanism includes a first metal sheet 9 made of a memory alloy. The first metal sheet 9 completely covers the air hole 6 from the outer wall of the LED lamp holder 1, and the middle section of the first metal sheet 9 is deformed to bulge outward after being heated. Under normal temperature conditions, the first metal sheet 9 is used to seal the air hole 6. Therefore, when there is no need to cool down, the metal sheet can be used to seal and prevent dust. At the same time, since the air hole 6 and the first metal sheet 9 are both located in the vertical direction close to the circuit board and the lamp board 4, the heat generated when the two are powered on for a long time can better affect the first metal sheet 9. After the metal sheet is heated, it will bend and deform due to the thermal deformation effect of the memory alloy, so that the air hole 6 is opened, thereby producing a good heat exchange effect.

[0042] Embodiment 3: The solution disclosed in this embodiment discloses another method for cooling down the temperature, specifically, Figure 6-Figure 7 As shown, the outer wall of the first metal sheet 9 is also connected to the heat-conducting member, wherein the tail end of the heat-conducting member passes through the outside of the protective vertical cylinder 2, and the heat-conducting member includes a horizontal cylinder 12 that passes through and is fixed on the protective vertical cylinder 2 and a cross bar 10 that is fixed on the first metal sheet 9. The cross bar 10 is horizontally slidably and telescopically installed in the cross cylinder 12, wherein the inner diameter of the cross cylinder 12 increases from the inner end to the outer end, and a baffle 11 that is vertically distributed and fixed to the outer end of the cross bar 10 is provided at the narrow inner diameter. On the one hand, the temperature generated by the circuit board and the substrate inside the LED lamp holder 1 will directly act on the internal space of the LED lamp holder 1, so under the effect of heat conduction, the heat will be transmitted through the first metal At the same time, the heat conduction mechanism formed by the horizontal cylinder 12 and the cross bar 10 can also form a new heat conduction channel, so that the heat is dissipated to the outside of the tube light through the conduction of the heat conduction mechanism. On the other hand, when the internal temperature of the LED lamp holder 1 is too high and causes the first metal sheet 9 to deform, the bent and deformed first metal sheet 9 will guide the cross bar 10 and drive the baffle 11 at its end to move toward the direction close to the outer end of the horizontal cylinder 12. Since the inner end of the horizontal cylinder 12 is connected to the internal space of the protective vertical cylinder 2, and the air hole 6 is in an open state, a new airflow exchange path will be generated, thereby more efficiently achieving the cooling purpose under high-temperature operation.

[0043] Embodiment 4: In this embodiment, another opening and closing control scheme is disclosed. The same as the above embodiment is that the metal sheet material of the memory alloy is still used to complete the basic logic of the opening and closing control, and the difference is reflected in Figure 8-Figure 10In the content shown, the opening and closing mechanism includes a ring body 14 and a second metal sheet 13 which is also a memory alloy, wherein the ring body 14 is vertically slidably installed in the space between the protective vertical cylinder 2 and the outer wall of the LED lamp holder 1, and the inner wall of the ring body 14 in the initial state covers the lower half opening area of ​​the air hole 6, and the inner end of the second metal sheet 13 is installed on the outer wall of the LED lamp holder 1 in the form of not completely covering the upper half opening area of ​​the air hole 6, and the middle section of the second metal sheet 13 is connected to the upper end surface of the ring body 14, and the tail end of the second metal sheet 13 passes through the protective vertical cylinder 2 and fits on the outer side wall of the protective vertical cylinder 2. The installation method of the second metal sheet 13, on the one hand, can utilize the method of its head end fitting in the LED lamp holder 1 to fully absorb heat, and utilize the design of its tail end fitting in the protective vertical cylinder 2 to fully discharge heat, and on the other hand, can utilize its high-temperature deformation characteristics to control the movement of the ring body 14 and release the blockage of the air hole 6.

[0044] The solution disclosed in this embodiment is a further expansion of the above solution. Figure 10-11 As shown, a vertical through channel 15 is opened in the ring body 14, and the channel 15 is blocked by the vertical rod 16 fixed in the protective vertical cylinder 2 in the initial state, and the vertical rod 16 blocks the channel 15 after the ring body 14 is completely moved down, and the lower end surface of the ring body 14 is also connected to a horizontal plate 17 through an elastic rope body. The horizontal plate 17 in the initial state blocks below the through hole 7, and the horizontal plate 17 follows the movement of the ring body 14 to release the blockage of the through hole 7. In the process of the second metal sheet 13 deforming and guiding the ring body 14 to move downward, the vertical rod 16 in the channel 15 will also slide relative to the ring body 14. When the vertical rod 16 is in a state of blocking the channel 15, the downward movement of the ring body 14 will cause the airflow in the space below it to be correspondingly compressed / the space above it will not be completely compressed The closed state will make the downward movement of the ring body 14 unaffected, and it will enter the internal cavity of the outer panel 3 through the perforation 7, and finally blow out from the opening 8 and act on the light-transmitting plate 5, thereby performing auxiliary airflow cleaning on the light-transmitting plate 3. When the ring body 14 moves down to the maximum distance, the channel 15 will be opened accordingly, so that the internal and external gases can circulate and exchange accordingly, thereby producing a cooling effect. The use of the cross plate 17 is to perform dust protection from the opening 8 at the outer panel 3, and to release the blockage by moving synchronously with the ring body 14 to ensure normal gas exchange. At the same time, in this solution, the second metal sheet 13 can also be replaced by other electric drive devices to more stably control the movement of the ring body 14, thereby meeting the use requirements of larger volume downlights.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat-dissipating LED downlight with variable light effects, comprising an aluminum substrate for mounting a light panel (4) and an LED lamp holder (1) for mounting the aluminum substrate, the LED lamp holder (1) being wrapped by a protective vertical cylinder (2), and the bottom end of the protective vertical cylinder (2) being fixed to the back of an outer panel (3), wherein a reflective bowl mounted on the outer panel (3) and a light-transmitting plate (5) at the bottom end thereof are used to reflect and soften the light emitted by the light panel (4), characterized in that: The downlight further comprises a ventilation mechanism, wherein the ventilation mechanism comprises an air hole (6) provided in the LED lamp holder (1) and extending through the left and right sides, and also comprises an opening (8) provided at the inner ring wall of the outer panel (3), the opening (8) being connected to a through hole (7) provided at the back side of the outer panel (3) through the inner hollow of the outer panel (3), and the through hole (7) being located in the space between the LED lamp holder (1) and the protective vertical cylinder (2); The LED lamp holder (1) is also provided with an opening and closing mechanism, which automatically opens or closes the air hole (6) according to the temperature change in the downlight; The opening and closing mechanism comprises a ring body (14) and a second metal sheet (13) also made of a memory alloy, wherein the ring body (14) is vertically slidably mounted in the space between the protective vertical cylinder (2) and the outer wall of the LED lamp holder (1), and the inner wall of the ring body (14) in an initial state covers the lower half opening area of ​​the air hole (6), and the inner end of the second metal sheet (13) is mounted on the outer wall of the LED lamp holder (1) in a form of not completely covering the upper half opening area of ​​the air hole (6), and the middle section of the second metal sheet (13) is connected to the upper end surface of the ring body (14).

2. According to claim 1, a heat dissipation LED downlight with variable light effect, characterized in that: The tail end of the second metal sheet (13) passes through the protective vertical cylinder (2) and is attached to the outer side wall of the protective vertical cylinder (2).

3. The heat dissipation LED downlight with variable light effect according to claim 2, characterized in that: A vertically penetrating passage (15) is provided in the ring body (14). The passage (15) is initially blocked by a vertical rod (16) fixed in the protective vertical cylinder (2). After the ring body (14) is completely moved downward, the blocking of the passage (15) by the vertical rod (16) is released.

4. The heat dissipation LED downlight with variable light effect according to claim 3, characterized in that: The lower end surface of the ring body (14) is also connected to a transverse plate (17) via an elastic rope body. In an initial state, the transverse plate (17) blocks below the through hole (7), and the transverse plate (17) follows the movement of the ring body (14) to release the blockage of the through hole (7).

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