Color-changeable LED projection lamp

Abstract

The utility model discloses a color-changeable LED (light-emitting diode) projection lamp, relates to the technical field of projection lamps, and provides the following scheme aiming at the problems that an LED lamp provided by the background technology can generate a large amount of heat, the heat generated by the LED lamp is not dissipated, a large amount of heat is gathered, the LED lamp is damaged and the practicability is low: the color-changeable LED projection lamp comprises a mounting structure, the mounting structure comprises a supporting frame, a mounting frame rotationally mounted on the outer wall of the top of the supporting frame through a connecting rivet, a lampshade with through holes formed in the outer walls of the upper portion and the lower portion, two positioning columns fixedly arranged on the inner walls of the two sides of the lampshade respectively, and a light-transmitting plate embedded in the inner wall of one end of the lampshade. The light source comprises a mounting plate connected to the inner wall of the lampshade through bolts, a plurality of LED lamp beads fixedly arranged on the outer wall of one side of the mounting plate, a fixing block and a PCB. According to the LED projection lamp, heat can be dissipated when the projection lamp operates, damage to the LED lamp beads caused by accumulation of a large amount of heat is prevented, and practicability is improved.

Description

Technical Field

[0001] This utility model relates to the field of floodlight technology, and in particular to a color-changing LED floodlight. Background Technology

[0002] A floodlight is a lighting fixture that provides illumination to a surface higher than the surrounding environment; it is also known as a spotlight. Typically, it can be aimed in any direction and has a structure unaffected by weather conditions. The color-changing principle of an LED color-changing light is achieved by adjusting the current, voltage, and color combination of the LEDs to produce different colors of light. The basic principle of a color-changing light is that when two LEDs of each of the three primary colors are lit, it can emit yellow, purple, and cyan. If red, green, and blue LEDs are lit simultaneously, it will produce white light.

[0003] A search revealed a Chinese patent (application number "201820533980.5") disclosing "a color-variable LED floodlight." This LED floodlight includes a lamp holder and a lamp body connected to the lamp holder. The lamp body includes: a horn-shaped outer shell with a transparent cover mounted on the top; multiple LEDs, a reflector, and a heat sink fixed inside the outer shell; wherein the LEDs include at least two colors; the LEDs face the convex surface of the reflector, and there is a gap between the LEDs and the reflector; multiple LEDs are soldered onto a circuit board, which is inclined along the outer shell; the circuit board is adhered to the heat sink with thermally conductive adhesive and fixed with screws; a control device is located at the bottom of the outer shell; multiple LEDs are electrically connected to the control device; the control device is also connected to a decoder and an audio player in sequence. However, during use, the LEDs in this LED floodlight generate a large amount of heat, and the lack of heat dissipation causes a large accumulation of heat, damaging the LEDs and resulting in low practicality. Utility Model Content

[0004] This utility model provides a color-changing LED floodlight, which solves the problem mentioned in the prior art that LED floodlights generate a lot of heat during use, and the lack of heat dissipation causes a large amount of heat to accumulate and damage the LED light, resulting in low practicality.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A color-changing LED floodlight includes a mounting structure. The mounting structure includes a support frame, a mounting bracket rotatably mounted on the top outer wall of the support frame via connecting rivets, a lampshade with through holes on both its upper and lower outer walls, two positioning posts respectively fixed to the inner walls of both sides of the lampshade, and a light-transmitting plate embedded in the inner wall of one end of the lampshade. A light source is provided inside the lampshade. The light source includes a mounting plate bolted to the inner wall of the lampshade, several LED beads fixed to one side of the outer wall of the mounting plate, a fixing block, and a PCB board bolted to one side of the outer wall of the fixing block. An air guiding mechanism is provided inside the lampshade, including an air guiding ring fixed to the inner wall of the lampshade. The lampshade is equipped with a heat dissipation mechanism, which includes a mounting ring abutting against one outer wall of a mounting plate, several heat dissipation plates respectively fixed to the outer wall of the mounting ring, a fixing ring fixed to one outer wall of one end of the several heat dissipation plates, a first heat-conducting plate fixed to the inner wall of the mounting ring, a second heat-conducting plate fixed to the inner wall of the mounting ring, a fixing plate connected to the inner wall of the lampshade by bolts, and a heat dissipation fan connected to one outer wall of the fixing plate by bolts. One end of the lampshade is equipped with an air outlet mechanism, which includes a sealing cover screwed to the inner wall of the lampshade, a mounting tube fixed to the inner wall of the sealing cover, an air guide cover with several air outlets on its outer wall, and a water-blocking ring fixed to the inner wall of the mounting tube.

[0007] Preferably, connecting shafts are fixed on both outer walls of the lampshade, and the two connecting shafts pass through and are rotatably mounted on both outer walls of the mounting frame.

[0008] Preferably, the outer wall of the mounting plate has several ventilation openings, and four connecting rods are bolted to one side of the outer wall of the mounting plate, and the fixing blocks are respectively bolted to the outer wall of one end of the four connecting rods.

[0009] Preferably, the outer wall of the air guide ring has an annular groove, and the position of the annular groove is adapted to the position of the two through holes. The bottom inner wall of the air guide ring has an installation groove, and a dustproof net is embedded in the installation groove. Several air inlets are opened in the installation groove. Two slots are opened on one side of the outer wall of the air guide ring, and two positioning posts are respectively slidably engaged with the two slots. One end of the two positioning posts abuts against the inner wall of one side of the air guide ring.

[0010] Preferably, the first heat-conducting plate is slidably sleeved on the outer wall of the four connecting rods, and the first heat-conducting plate abuts against one side of the outer wall of the mounting plate; the second heat-conducting plate is slidably sleeved on the outer wall of the four connecting rods, and the second heat-conducting plate abuts against one side of the outer wall of the fixing block.

[0011] Preferably, the bottom of the mounting pipe has a water outlet on the outer wall near the water baffle ring, and the air guide cover is embedded in the inner wall of the mounting pipe.

[0012] The above scheme draws cool air from outside the lampshade into the air guide ring by the operation of the cooling fan. The cool air then enters the lampshade through the air inlet at the bottom of the air guide ring. As the cool air passes through the ventilation holes on the mounting plate, it carries away the heat generated by the LED beads. The first heat-conducting plate exchanges heat with the mounting plate, and the second heat-conducting plate exchanges heat with the fixing block. The first and second heat-conducting plates transfer heat to the heat sink. Outside air comes into contact with multiple heat sinks, carrying the heat generated by the LED beads and the heat on the heat sink to the air guide. The hot air is discharged from the air outlet on the air guide. When there is rain outside, the rainwater passes through the through hole on the top of the lampshade and enters the air guide ring. The rainwater is discharged from the through hole at the bottom of the lampshade along the air guide ring. When the rainwater enters the mounting tube along the air guide, the water-blocking ring blocks the rainwater and allows it to be discharged from the drain at the bottom of the mounting tube.

[0013] The beneficial effects of this utility model are as follows:

[0014] The cooling fan draws cool air from outside the lampshade into the air guide ring. The cool air then enters the lampshade through the air inlet at the bottom of the air guide ring. As the cool air passes through the ventilation holes on the mounting plate, it carries away the heat generated by the LED beads. The first heat-conducting plate exchanges heat with the mounting plate, and the second heat-conducting plate exchanges heat with the fixing block. The first and second heat-conducting plates transfer heat to the heat sink. Outside air comes into contact with multiple heat sinks, carrying the heat generated by the LED beads and the heat from the heat sinks to the air guide cover. The hot air is then exhausted from the air outlet on the air guide cover. When rainwater is present, it passes through the through-hole at the top of the lampshade and enters the air guide ring. The rainwater then flows along the air guide ring and exits through the through-hole at the bottom of the lampshade. When rainwater enters the mounting tube along the air guide cover, the water-blocking ring prevents the rainwater from flowing out through the drain at the bottom of the mounting tube. This system effectively dissipates heat during the operation of the floodlight, preventing excessive heat buildup that could damage the LED beads and improving practicality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall main structure of a color-changing LED floodlight proposed in this utility model.

[0016] Figure 2 This is a front view cross-sectional structural diagram of a color-changing LED floodlight proposed in this utility model.

[0017] Figure 3 This is a front view schematic diagram of the installation structure of a color-changing LED floodlight proposed in this utility model.

[0018] Figure 4 This is a schematic diagram of the main structure of the light source of a color-changing LED floodlight proposed in this utility model.

[0019] Figure 5This is a side view of the light source structure of a color-changing LED floodlight proposed in this utility model.

[0020] Figure 6 This is a front view schematic diagram of the air guide mechanism of a color-changing LED floodlight proposed in this utility model.

[0021] Figure 7 This is a front view cross-sectional structural diagram of the heat dissipation mechanism of a color-changing LED floodlight proposed in this utility model.

[0022] Figure 8 This is a front view cross-sectional structural diagram of the air outlet mechanism of a color-changing LED floodlight proposed in this utility model.

[0023] In the diagram: 1. Installation structure; 101. Support frame; 102. Mounting bracket; 103. Lampshade; 104. Connecting shaft; 105. Positioning post; 106. Light-transmitting plate; 2. Light source; 201. Mounting plate; 202. LED beads; 203. Connecting rod; 204. Fixing block; 205. PCB board; 3. Air guiding mechanism; 301. Air guiding ring; 302. Dustproof net; 4. Heat dissipation mechanism; 401. Mounting ring; 402. Heat dissipation plate; 403. Fixing ring; 404. First heat-conducting plate; 405. Second heat-conducting plate; 406. Fixing plate; 407. Cooling fan; 5. Air outlet mechanism; 501. Sealing cover; 502. Mounting pipe; 503. Air guide cover; 504. Water baffle ring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1, referring to Figure 1-5A color-changing LED floodlight includes a mounting structure 1, which comprises a support frame 101, a mounting bracket 102 rotatably mounted on the top outer wall of the support frame 101 via connecting rivets, a lampshade 103 with through holes on both the upper and lower outer walls, two positioning posts 105 respectively fixed on the inner walls of both sides of the lampshade 103, and a light-transmitting plate 106 embedded in the inner wall of one end of the lampshade 103. Connecting shafts 104 are fixed on both outer walls of the lampshade 103, and the two connecting shafts 104 pass through and rotatably mount to the outer walls of both sides of the mounting bracket 102. A light source 2 is provided inside the lampshade 103, and the light source 2 includes a mounting plate 201 connected to the inner wall of the lampshade 103 via bolts, and several... LED beads 202, fixing blocks 204, and PCB board 205 are fixed to the outer wall of one side of the mounting plate 201 and bolted to the outer wall of one side of the fixing blocks 204. Several ventilation holes are opened on the outer wall of the mounting plate 201. Four connecting rods 203 are bolted to the outer wall of one side of the mounting plate 201. The fixing blocks 204 are bolted to the outer wall of one end of the four connecting rods 203 respectively. The PCB board 205 is equipped with electronic components and corresponding control programs for controlling the color change of LED beads 202 (which are fully controllable by existing technology and will not be elaborated here). Furthermore, a light-concentrating structure can be set inside the lampshade so that the light emitted by the LED beads 202 is focused and does not diffuse.

[0026] Example 2, refer to Figure 6-8A color-changing LED floodlight also includes an air guide mechanism 3. The air guide mechanism 3 includes an air guide ring 301 fixed to the inner wall of the lamp cover 103. An annular groove is formed on the outer wall of the air guide ring 301, and the position of the annular groove is adapted to the position of two through holes. An installation groove is formed on the bottom inner wall of the air guide ring 301, and a dustproof net 302 is embedded in the installation groove. Several air inlets are formed in the installation groove. Two slots are formed on one outer wall of the air guide ring 301, and two positioning posts 105 are respectively positioned with two... The slots form a sliding fit, and one end of each of the two positioning posts 105 abuts against the inner wall of one side of the air guide ring 301. A heat dissipation mechanism 4 is provided inside the lampshade 103. The heat dissipation mechanism 4 includes a mounting ring 401 abutting against the outer wall of one side of the mounting plate 201, several heat dissipation plates 402 respectively fixed to the outer wall of the mounting ring 401, a fixing ring 403 fixed to the outer wall of one end of each heat dissipation plate 402, a first heat-conducting plate 404 fixed to the inner wall of the mounting ring 401, and a fixing ring 403 fixed to the inner wall of the mounting ring 401. The second heat-conducting plate 405 is mounted on the inner wall of the mounting ring 401, the fixing plate 406 is bolted to the inner wall of the lampshade 103, and the cooling fan 407 is bolted to one side of the outer wall of the fixing plate 406. The first heat-conducting plate 404 is slidably sleeved on the outer wall of the four connecting rods 203 and abuts against one side of the outer wall of the mounting plate 201. The second heat-conducting plate 405 is slidably sleeved on the outer wall of the four connecting rods 203 and abuts against one side of the outer wall of the mounting plate 201. On one side of the outer wall of the fixed block 204, one end of the lamp cover 103 is provided with an air outlet mechanism 5. The air outlet mechanism 5 includes a sealing cover 501 screwed to the inner wall of the lamp cover 103, an installation tube 502 fixed to the inner wall of the sealing cover 501, an air guide cover 503 with several air outlets on the outer wall, and a water baffle ring 504 fixed to the inner wall of the installation tube 502. A water outlet is opened on the outer wall of the bottom of the installation tube 502 near the water baffle ring 504, and the air guide cover 503 is embedded in the inner wall of the installation tube 502.

[0027] Working principle: The cooling fan 402 draws cold air from outside the lamp cover 103 into the air guide ring 301. The cold air then enters the lamp cover 103 through the air inlet at the bottom of the air guide ring 301. As the cold air passes through the ventilation holes on the mounting plate 201, it carries away the heat generated by the LED beads 202. The first heat-conducting plate 404 exchanges heat with the mounting plate 201, and the second heat-conducting plate 405 exchanges heat with the fixing block 204. The first and second heat-conducting plates 404 and 405 transfer heat to the heat sink 402. Outside air comes into contact with multiple heat sinks 402, thus dissipating the heat generated by the LED beads 202. The heat from the heat sink 402 is carried to the air guide shroud 503, and the hot air is discharged from the air outlet on the air guide shroud 503. When there is rain outside, the rainwater passes through the through hole above the lamp cover 103 and enters the air guide ring 301. The rainwater is discharged from the through hole below the lamp cover 103 along the air guide ring 301. When the rainwater enters the mounting tube 502 along the air guide shroud 503, the water baffle ring 504 blocks the rainwater and allows the rainwater to be discharged from the drain outlet below the mounting tube 502. The color of the light emitted by the LED beads 202 is controlled by the program preset on the PCB board 205.

[0028] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A color-changing LED floodlight, comprising a mounting structure (1), characterized in that, The installation structure (1) includes a support frame (101), a mounting frame (102) rotatably mounted on the top outer wall of the support frame (101) by connecting rivets, a lampshade (103) with through holes on both the upper and lower outer walls, two positioning posts (105) respectively fixed on the inner walls of both sides of the lampshade (103), and a light-transmitting plate (106) embedded in the inner wall of one end of the lampshade (103); The lampshade (103) is provided with a light source (2), which includes a mounting plate (201) connected to the inner wall of the lampshade (103) by bolts, a plurality of LED beads (202) fixed on one side of the outer wall of the mounting plate (201), a fixing block (204), and a PCB board (205) connected to one side of the outer wall of the fixing block (204) by bolts; The lampshade (103) is provided with an air guiding mechanism (3), which includes an air guiding ring (301) fixed on the inner wall of the lampshade (103); The lampshade (103) is provided with a heat dissipation mechanism (4), which includes a mounting ring (401) abutting against one side of the outer wall of the mounting plate (201), a plurality of heat dissipation plates (402) respectively fixed on the outer wall of the mounting ring (401), a fixing ring (403) fixed on one end of the outer wall of the plurality of heat dissipation plates (402), a first heat-conducting plate (404) fixed on the inner wall of the mounting ring (401), a second heat-conducting plate (405) fixed on the inner wall of the mounting ring (401), a fixing plate (406) connected to the inner wall of the lampshade (103) by bolts, and a heat dissipation fan (407) connected to one side of the outer wall of the fixing plate (406) by bolts. The lampshade (103) is provided with an air outlet mechanism (5) at one end. The air outlet mechanism (5) includes a sealing cover (501) screwed onto the inner wall of the lampshade (103), an installation tube (502) fixed onto the inner wall of the sealing cover (501), an air guide cover (503) with several air outlets on the outer wall, and a water baffle ring (504) fixed onto the inner wall of the installation tube (502).

2. The color-changing LED floodlight according to claim 1, characterized in that, Connecting shafts (104) are fixed on both outer walls of the lampshade (103), and the two connecting shafts (104) are respectively inserted through and rotatably installed on both outer walls of the mounting bracket (102).

3. A color-changing LED floodlight according to claim 1, characterized in that, The mounting plate (201) has several ventilation openings on its outer wall. Four connecting rods (203) are bolted to one side of the outer wall of the mounting plate (201), and fixing blocks (204) are bolted to the outer wall of one end of the four connecting rods (203).

4. A color-changing LED floodlight according to claim 1, characterized in that, The outer wall of the air guide ring (301) has an annular groove, and the position of the annular groove is adapted to the position of the two through holes. The bottom inner wall of the air guide ring (301) has an installation groove, and a dustproof net (302) is embedded in the installation groove. Several air inlets are opened in the installation groove. Two slots are opened on one side of the outer wall of the air guide ring (301), and two positioning posts (105) are respectively slidably engaged with the two slots. One end of the two positioning posts (105) abuts against one side of the inner wall of the air guide ring (301).

5. A color-changing LED floodlight according to claim 3, characterized in that, The first heat-conducting plate (404) is slidably sleeved on the outer wall of the four connecting rods (203), and the first heat-conducting plate (404) abuts against one side of the outer wall of the mounting plate (201). The second heat-conducting plate (405) is slidably sleeved on the outer wall of the four connecting rods (203), and the second heat-conducting plate (405) abuts against one side of the outer wall of the fixing block (204).

6. A color-changing LED floodlight according to claim 1, characterized in that, The bottom of the installation pipe (502) has a water outlet on the outer wall near the water baffle ring (504), and the air guide cover (503) is embedded in the inner wall of the installation pipe (502).

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