LED lamp bead

Abstract

The utility model discloses an LED lamp bead which comprises a base. The light-transmitting cover body is installed on the base, and the light-transmitting cover body and the base form a sealed cavity. And the light-emitting chip is mounted on the base and is arranged in the sealing cavity. And the first radiating fin is mounted on the base, is arranged in the sealing cavity and is used for absorbing heat in the sealing cavity. And the second radiating fin is mounted on the base and is arranged on the outer side of the sealing cavity. And the heat-conducting wire is mounted on the base, one end of the heat-conducting wire is connected with the first radiating fin, and the other end is connected with the second radiating fin. When the LED lamp bead is used and the light-emitting chip generates heat, the first cooling fin absorbs the heat in the light-transmitting cover body, the heat of the first cooling fin is transmitted to the second cooling fin along the heat-conducting wire, and the heat of the second cooling fin is diffused to the outside, so that the cooling in the light-transmitting cover body is realized. When the LED lamp bead is used, the light-transmitting cover body and the packaging base form a sealed cavity, and the first cooling fin, the heat conducting wire and the second cooling fin conduct out heat in the upwind cavity, so that heat dissipation of the light-emitting chip is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of light-emitting devices, in particular to an LED lamp bead. Background Art

[0002] The LED lamp is an electroluminescent semiconductor material chip, which is cured to the bracket with silver glue or white glue, and then connected to the chip and circuit board with silver wire or gold wire. It is sealed with epoxy resin on all sides to protect the internal core wire, and finally the outer shell is installed, so the LED lamp has good earthquake resistance.

[0003] Chinese patent application number: 201920114486.X discloses an LED lamp bead, including a packaging base, a light-transmitting cover, two pins and a light-emitting chip. The light-transmitting cover is covered on the packaging base to form a sealed cavity. The pin includes a contact portion, a spiral portion and a welding portion arranged in sequence, two of the contact portions are arranged inside the cavity, the two spiral portions are rotated and penetrated inside the packaging base without contacting each other, and the two welding portions extend out of the packaging base. The two ends of the light-emitting chip are respectively connected to the contact portions. The utility model provides a waterproof LED lamp bead, which is easy to install.

[0004] With respect to the above-mentioned related technologies, the inventor believes that when the LED lamp bead is used, since the light-transmitting cover and the packaging base form a sealed cavity, it is difficult for the light-emitting chip to dissipate heat. Utility Model Content

[0005] In view of the above technical problems, the utility model provides an LED lamp bead, comprising:

[0006] Base.

[0007] The light-transmitting cover is installed on the base and forms a sealed cavity with the base.

[0008] The light emitting chip is mounted on the base and arranged in the sealed cavity.

[0009] The first heat sink is installed on the base and arranged in the sealed cavity to absorb the heat in the sealed cavity.

[0010] The second heat sink is installed on the base and arranged outside the sealed cavity.

[0011] The heat conducting wire is installed on the base, one end of which is connected to the first heat sink, and the other end of which is connected to the second heat sink.

[0012] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: when using LED lamp beads, when the light-emitting chip generates heat, the first heat sink absorbs the heat in the light-transmitting cover body, the heat of the first heat sink is transferred to the second heat sink along the heat conduction line, and the heat of the second heat sink diffuses to the outside, thereby achieving cooling inside the light-transmitting cover body.

[0013] Compared with the prior art, the utility model has the following advantages: when the LED lamp bead is used, the light-transmitting cover and the packaging base form a sealed cavity, and the first heat sink, the heat conducting wire and the second heat sink conduct the heat in the upwind cavity, thereby realizing the heat dissipation of the light-emitting chip.

[0014] More preferably, it also includes:

[0015] The cooling device is connected to the second heat sink and cools the second heat sink.

[0016] By adopting the above technical solution, the cooling device cools the second heat sink, thereby increasing the temperature difference between the first heat sink and the second heat sink, improving the efficiency of the second heat sink absorbing the first heat sink, and improving the heat dissipation capacity.

[0017] More preferably, the cooling device comprises:

[0018] The fan is rotatably connected to the base and is used for fanning the second heat sink.

[0019] The motor is connected to the fan and is used to provide driving force to the fan to drive the fan to rotate.

[0020] The power supply is connected to the motor and is used to provide power to the power supply.

[0021] With the above technical solution, the power supply provides power to the motor, the motor drives the fan to rotate, and the fan fans the second heat sink, thereby taking away the heat of the second heat sink.

[0022] More preferably, it also includes:

[0023] The control component has one end connected to the power supply and the other end connected to the motor, and is used to control the on and off of the motor and the fan.

[0024] By adopting the above technical solution, the control component can control the on and off of the fan according to the working state of the light-emitting chip, thereby saving electricity.

[0025] Further preferably, the control component comprises:

[0026] The first wire has an end connected to the motor.

[0027] The second wire has an end connected to a power source.

[0028] The third wire has one end connected to the motor and the other end connected to the power supply.

[0029] The connecting piece is slidably connected to the base, connected and matched with the end of the first wire away from the motor, and connected and matched with the end of the second wire away from the power supply, and is used to control the connection and disconnection of the first wire and the second wire.

[0030] The through hole passes through the base and is used to connect the interior of the sealed cavity with the external space.

[0031] The piston is connected with the connecting piece and is slidably sleeved with the through hole.

[0032] With the above technical solution, when the light-emitting chip emits light, the heat inside the light-transmitting cover increases, the air inside the light-transmitting cover expands due to the heat, the air pushes the piston to slide in the through hole, the piston drives the connecting piece to move, the connecting piece connects the first wire and the second wire, and the power of the power supply can be transmitted from the first wire, the second wire and the third wire to the motor to provide power for the motor. When the light-emitting chip is turned off, the heat inside the light-transmitting cover decreases, the air inside the light-transmitting cover cools down and contracts, the air pushes the piston to slide in the through hole, the piston drives the connecting piece to move, and the connecting piece disconnects the first wire and the second wire.

[0033] Further preferably, the control component further comprises:

[0034] The sliding block is connected with the connecting piece and is slidably connected with the piston.

[0035] An elastic member has one end connected to the slider and the other end connected to the slider.

[0036] The stopper is fixedly mounted on the base and abuts against the connecting piece to limit the position of the connecting piece.

[0037] By adopting the above technical solution, when the connecting piece contacts the stopper, the piston pushes the slider to move, and the elastic member contracts, thereby preventing the connecting piece from continuously moving and deforming the first wire and the second wire.

[0038] More preferably, it also includes:

[0039] The base is detachably connected to the pedestal.

[0040] The above technical solution is adopted to facilitate the replacement of the light-emitting chip.

[0041] Further preferably, the base is snap-fitted to the chassis.

[0042] More preferably, it also includes:

[0043] The card slot is arranged on the base.

[0044] The boss is arranged on the opening edge of the light-transmitting cover body and is engaged with the card slot.

[0045] The above technical solution is adopted to improve the sealing performance of the connection between the base and the light-transmitting cover body.

[0046] More preferably, the elastic member is a spring.

[0047] In summary, the utility model has the following beneficial effects: when the LED lamp bead is used, when the light-emitting chip generates heat, the first heat sink absorbs the heat in the light-transmitting cover body, the heat of the first heat sink is transferred to the second heat sink along the heat-conducting wire, and the heat of the second heat sink diffuses to the outside, thereby achieving cooling in the light-transmitting cover body. When the LED lamp bead is used, the light-transmitting cover body and the packaging base form a sealed cavity, and the first heat sink, the heat-conducting wire and the second heat sink conduct the heat in the upwind cavity, thereby achieving heat dissipation of the light-emitting chip. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a structural schematic diagram of this embodiment;

[0049] Figure 2 It is a front view of this embodiment;

[0050] Figure 3 for Figure 2 Cross-sectional view in the AA direction;

[0051] Figure 4 for Figure 3 A partial enlarged view of point B in the middle;

[0052] Figure numerals: 1-base; 2-light-transmitting cover; 3-light-emitting chip; 4-first heat sink; 5-second heat sink; 6-heat conducting wire; 7-cooling device; 71-fan; 72-motor; 73-power supply; 74-control component; 741-first wire; 742-second wire; 743-third wire; 744-connecting plate; 745-through hole; 746-piston; 747-slider; 748-elastic member; 749-block; 8-base; 9-slot; 10-boss. DETAILED DESCRIPTION

[0053] The following is combined with Figure 1 , Figure 2 , Figure 3 as well as Figure 4 The utility model is further introduced in detail.

[0054] The LED lamp is an electroluminescent semiconductor material chip, which is cured to the bracket with silver glue or white glue, and then connected to the chip and circuit board with silver wire or gold wire. It is sealed with epoxy resin on all sides to protect the internal core wire, and finally the outer shell is installed, so the LED lamp has good earthquake resistance.

[0055] Chinese patent application number: 201920114486.X discloses an LED lamp bead, including a packaging base, a light-transmitting cover, two pins and a light-emitting chip. The light-transmitting cover is covered on the packaging base to form a sealed cavity. The pin includes a contact portion, a spiral portion and a welding portion arranged in sequence, two of the contact portions are arranged inside the cavity, the two spiral portions are rotated and penetrated inside the packaging base without contacting each other, and the two welding portions extend out of the packaging base. The two ends of the light-emitting chip are respectively connected to the contact portions. The utility model provides a waterproof LED lamp bead, which is easy to install.

[0056] With respect to the above-mentioned related technologies, the inventor believes that when the LED lamp bead is used, since the light-transmitting cover and the packaging base form a sealed cavity, it is difficult for the light-emitting chip to dissipate heat.

[0057] Based on the above technical problems, the applicant has conceived the following technical solutions:

[0058] When using LED lamp beads, when the light-emitting chip generates heat, the first heat sink absorbs the heat in the light-transmitting cover, the heat of the first heat sink is transferred to the second heat sink along the heat conduction line, and the heat of the second heat sink diffuses to the outside, thereby achieving cooling in the light-transmitting cover.

[0059] Based on the above concept, the applicant proposed the technical solution of this application, which is as follows:

[0060] An LED lamp bead, such as Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, it includes: a base 1. A light-transmitting cover body 2 is installed on the base 1 and forms a sealed cavity with the base 1. A light-emitting chip 3 is installed on the base 1 and arranged in the sealed cavity. A first heat sink 4 is installed on the base 1 and arranged in the sealed cavity, and is used to absorb the heat in the sealed cavity. A second heat sink 5 is installed on the base 1 and arranged outside the sealed cavity. A heat conductor 6 is installed on the base 1, one end of which is connected to the first heat sink 4, and the other end is connected to the second heat sink 5. When the LED lamp bead is used, when the light-emitting chip 3 generates heat, the first heat sink 4 absorbs the heat in the light-transmitting cover body 2, and the heat of the first heat sink 4 is transferred to the second heat sink 5 along the heat conductor 6, and the heat of the second heat sink 5 is diffused to the outside, thereby achieving cooling in the light-transmitting cover body 2. When the LED lamp bead is used, the light-transmitting cover body 2 and the packaging base 8 form a sealed cavity, and the first heat sink 4, the heat conductor 6 and the second heat sink 5 extract the heat in the upwind cavity, thereby achieving heat dissipation of the light-emitting chip 3.

[0061] Specifically, it also includes: a cooling device 7 connected to the second heat sink 5 to cool the second heat sink 5. The cooling device 7 cools the second heat sink 5, increases the temperature difference between the first heat sink 4 and the second heat sink 5, improves the efficiency of the second heat sink 5 absorbing the first heat sink 4, and improves the heat dissipation capacity.

[0062] Specifically, the cooling device 7 includes: a fan 71, which is rotatably connected to the base 1 and is used to fan the second heat sink 5. A motor 72, which is connected to the fan 71 and is used to drive the fan 71 to rotate. A power supply 73, which is connected to the motor 72 and is used to provide power to the power supply 73. The power supply 73 provides power to the motor 72, and the motor 72 drives the fan 71 to rotate, and the fan 71 fans the second heat sink 5, thereby taking away the heat of the second heat sink 5.

[0063] Specifically, it also includes: a control component 74, one end of which is connected to the power supply 73 and the other end is connected to the motor 72, for controlling the on and off of the motor 72 and the fan 71. The control component 74 can control the on and off of the fan 71 according to the working state of the light-emitting chip 3 to save power.

[0064] Specifically, the control component 74 includes: a first wire 741, whose end is connected to the motor 72. A second wire 742, whose end is connected to the power supply 73. A third wire 743, whose one end is connected to the motor 72 and whose other end is connected to the power supply 73. A connecting piece 744, which is slidably connected to the base 1, is connected and cooperated with the end of the first wire 741 away from the motor 72, and is connected and cooperated with the end of the second wire 742 away from the power supply 73, and is used to control the connection and disconnection of the first wire 741 and the second wire 742. A through hole 745, which runs through the base 1, is used to connect the inside of the sealed cavity with the outside space. A piston 746, which is connected to the connecting piece 744, is slidably sleeved with the through hole 745. When the light-emitting chip 3 emits light, the heat in the light-transmitting cover 2 increases, the air in the light-transmitting cover 2 expands due to the heat, the air pushes the piston 746 to slide in the through hole 745, the piston 746 drives the connecting piece 744 to move, the connecting piece 744 connects the first wire 741 and the second wire 742, the power of the power supply 73 can be transmitted from the first wire 741, the second wire 742 and the third wire 743 to the motor 72, and provides power for the motor 72. When the light-emitting chip 3 is turned off, the heat in the light-transmitting cover 2 decreases, the air in the light-transmitting cover 2 cools down and contracts, the air pushes the piston 746 to slide in the through hole 745, the piston 746 drives the connecting piece 744 to move, and the connecting piece 744 disconnects the first wire 741 and the second wire 742.

[0065] Specifically, the control assembly 74 further includes: a slider 747, which is connected to the connecting piece 744 and is slidably connected to the piston 746. An elastic member 748, one end of which is connected to the slider 747, and the other end of which is connected to the slider 747. A stopper 749, which is fixedly mounted on the base 1, is in abutment with the connecting piece 744 and is used to limit the position of the connecting piece 744. When the connecting piece 744 abuts against the stopper 749, the piston 746 pushes the slider 747 to move, and the elastic member 748 contracts, so as to prevent the connecting piece 744 from continuously moving and pushing the first wire 741 and the second wire 742 to deform.

[0066] Specifically, it also includes: a base 8, which is detachably connected to the base 1, so as to facilitate the replacement of the light emitting chip 3.

[0067] Specifically, the base 8 is snap-fitted with the base 1 .

[0068] Specifically, it also includes: a card slot 9, which is provided on the base 1. A boss 10, which is provided on the opening edge of the light-transmitting cover 2, and is engaged with the card slot 9. The sealing performance of the connection between the base 1 and the light-transmitting cover 2 is improved. The elastic member 748 is a spring.

[0069] In summary, when the LED lamp bead is used, when the light emitting chip 3 generates heat, the first heat sink 4 absorbs the heat in the light-transmitting cover 2, and the heat of the first heat sink 4 is transferred to the second heat sink 5 along the heat conducting wire 6, and the heat of the second heat sink 5 diffuses to the outside, thereby achieving the cooling in the light-transmitting cover 2. When the LED lamp bead is used, the light-transmitting cover 2 and the packaging base 8 form a sealed cavity, and the first heat sink 4, the heat conducting wire 6 and the second heat sink 5 guide the heat in the upwind cavity, thereby achieving the heat dissipation of the light emitting chip 3.

[0070] This specific embodiment is merely an explanation of the utility model, and it is not a limitation of the utility model. After reading this specification, those skilled in the art can make non-creative modifications to the embodiment as needed, but as long as it is within the protection scope of the utility model, it is protected by the patent law.

Claims

1. An LED lamp bead, characterized in that: include: Base (1); A light-transmitting cover body (2) is mounted on the base (1) and forms a sealed cavity with the base (1); A light emitting chip (3) is mounted on the base (1) and is disposed in the sealed cavity; A first heat sink (4) is mounted on the base (1), disposed in the sealed cavity, and used to absorb heat in the sealed cavity; A second heat sink (5) is mounted on the base (1) and is disposed outside the sealed cavity; A heat conducting wire (6) is mounted on the base (1), one end of which is connected to the first heat sink (4) and the other end of which is connected to the second heat sink (5).

2. The LED lamp bead according to claim 1, characterized in that: Also includes: A cooling device (7) is connected to the second heat sink (5) and cools the second heat sink (5).

3. The LED lamp bead according to claim 2, characterized in that: The temperature reduction device (7) comprises: a fan (71) rotatably connected to the base (1) and used to fan the second heat sink (5); a motor (72), connected to the fan (71), and used to provide driving force to the fan (71), so as to drive the fan (71) to rotate; A power source (73) is connected to the motor (72) and is used to provide power to the power source (73).

4. The LED lamp bead according to claim 3, characterized in that: Also includes: A control component (74) has one end connected to the power source (73) and the other end connected to the motor (72), and is used to control the on and off of the motor (72) and the fan (71).

5. The LED lamp bead according to claim 4, characterized in that: The control component (74) comprises: A first conducting wire (741), an end of which is connected to the motor (72); A second wire (742), an end of which is connected to the power source (73); A third wire (743), one end of which is connected to the motor (72) and the other end of which is connected to the power source (73); A connecting piece (744) is slidably connected to the base (1), connected and matched with an end of the first wire (741) away from the motor (72), and connected and matched with an end of the second wire (742) away from the power source (73), and is used to control the connection and disconnection of the first wire (741) and the second wire (742); A through hole (745) passes through the base (1) and is used to connect the interior of the sealed cavity with the external space; The piston (746) is connected to the connecting piece (744) and is slidably sleeved with the through hole (745).

6. The LED lamp bead according to claim 5, characterized in that: The control component (74) further comprises: A slider (747) connected to the connecting piece (744) and slidably connected to the piston (746); An elastic member (748), one end of which is connected to the slider (747), and the other end of which is connected to the slider (747); A stopper (749) is fixedly mounted on the base (1) and abuts against the connecting piece (744) to limit the position of the connecting piece (744).

7. The LED lamp bead according to claim 1, characterized in that: Also includes: A base (8) is detachably connected to the base (1).

8. The LED lamp bead according to claim 7, characterized in that: The base (8) is snap-fitted to the pedestal (1).

9. The LED lamp bead according to claim 1, characterized in that: Also includes: A card slot (9) provided on the base (1); A boss (10) is arranged on the opening edge of the light-transmitting cover body (2) and is engaged with the engagement groove (9).

10. The LED lamp bead according to claim 6, characterized in that: The elastic member (748) is a spring.

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