LED lamp device

Abstract

An LED lamp device comprises a lamp string formed by connecting forward and reverse bi-crystal LED lamp beads in series, an alternating current input end for supplying alternating current to the lamp string and a voltage reduction device arranged at one end of the lamp string, and the voltage reduction device is a polyester film capacitor C1. Due to the fact that the combination of the lamp string formed by connecting the forward and reverse bi-crystal LED lamp beads in series and the voltage reduction device is applied, AC input can be directly used, rectification is not needed, and the effect that a light source does not shake can be achieved; pins of the LED lamp beads cannot be electrolyzed, so that the safety and the service life of the product are improved; the use of elements such as diodes is reduced, so that the production process is simplified, and the product cost is reduced; due to the fact that the LED lamp beads are combined through forward and reverse double crystals, the heat dissipation area of the LED lamp beads is larger, the heat dissipation effect is better, and the service life of the LED lamp beads is prolonged. The positive half wave and the negative half wave of the alternating current are effectively utilized, and the power factor of the product is higher.

Description

Technical Field

[0001] The present invention relates to the technical field of LEDs, in particular to an AC input LED lamp device. Background Art

[0002] like Figure 1 As shown, the existing LED lamp products include a lamp string composed of unidirectional LED lamp beads connected in series, a head plug at one end of the lamp string and a tail plug at the other end of the lamp string. The AC input is rectified by a diode and stepped down by a capacitor, and only the positive half-wave is provided for the lamp string. Since the entire combination is a fixed-direction DC current, the current direction remains unchanged, and the electrolysis requirements are met. The electrolysis products will accumulate steadily, and the accumulation of electrolysis products will lead to safety hazards such as product damage, performance degradation, short circuit, and electrolysis ignition overheating. The existing products need to add diodes because of the need for rectification, so the cost will be higher, and the LED light source will jitter. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an LED lamp device which does not require diode rectification, has lower cost, cannot effectively accumulate electrolysis products, and does not cause jitter in the LED light source.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: an LED lamp device, including a lamp string composed of positive and negative dual-crystal LED lamp beads connected in series, an AC input end for supplying AC power to the lamp string, and a step-down device arranged at one end of the lamp string, wherein the step-down device is a polyester film capacitor C1. Principle of the present invention: Due to the application of the combination of the lamp string composed of positive and negative dual-crystal LED lamp beads connected in series and the step-down device, the AC alternating current input can be used directly without rectification, and the effect of no jitter of the light source can be achieved; the AC alternating current input can be used directly without rectification, and the LED lamp bead pins will not be electrolyzed, thereby improving the safety and service life of the product; the AC alternating current input can be used directly without rectification, reducing the use of components such as diodes, simplifying the production process, and reducing product costs; since the LED lamp beads adopt a positive and negative dual-crystal combination, the heat dissipation area of ​​the LED lamp beads is larger, the heat dissipation effect is better, and the service life of the LED lamp beads is extended; the AC alternating current input can be used directly, the positive half-wave and negative half-wave of the alternating current are effectively utilized, and the product power factor is higher.

[0005] As an improvement, a voltage dropping resistor replaces the polyester film capacitor C1.

[0006] As an improvement, the polyester film capacitor C1 is connected in parallel with the discharge resistor R1.

[0007] As an improvement, the polyester film capacitor C1 is connected in parallel with the discharge resistor R1 and then connected to one end of the light string through the anti-surge resistor R2, and the other end of the light string is connected to the anti-surge resistor R3.

[0008] As an improvement, the AC input end includes a live wire L and a neutral wire N, the live wire L is connected to one end of the light string through a fuse FUSE2, and the neutral wire N is connected to the other end of the light string through a fuse FUSE1.

[0009] As an improvement, the forward and reverse dual-crystal LED lamp bead is composed of two LED chips connected in parallel and arranged in reverse, and the pins of the LED lamp bead are Dumet wires.

[0010] As an improvement, the LED lamp device also includes a head plug arranged at one end of the light string and a tail plug arranged at the other end of the light string, the head plug is provided with an insert, the tail plug is provided with a first socket, the first socket is provided with a first contact, the insert corresponds to the first contact one by one and is electrically connected.

[0011] As an improvement, the voltage reduction device is arranged on the light string, the head plug or the tail plug.

[0012] As an improvement, a second socket is provided at the rear end of the head plug, and a second contact piece electrically connected to the plug piece is provided in the second socket.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. Due to the combination of the forward and reverse dual-crystal LED lamp beads connected in series and the step-down device, the AC input can be used directly without rectification, so that the light source does not shake; 2. AC input can be used directly without rectification, and the LED lamp bead pins will not be electrolyzed, which improves product safety and service life; 3. AC input can be used directly without rectification, reducing the use of diodes and other components, simplifying the production process and reducing product costs; 4. Since the LED lamp beads adopt a positive and negative dual crystal combination, the heat dissipation area of ​​the LED lamp beads is larger and the heat dissipation effect is better, thereby extending the life of the LED lamp beads; 5. AC input can be used directly, the positive and negative half-waves of AC are effectively utilized, the product power factor is higher, and the power factor is close to 1; 6. Use polyester film capacitors as voltage-reducing components. Compared with resistor voltage reduction, polyester film capacitors generate less heat; 7. The LED lamp bead pins are made of Dumet wire, and the pins will not be electrolyzed or oxidized. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a circuit diagram of the prior art.

[0015] Figure 2 This is the circuit diagram of Example 1.

[0016] Figure 3This is the circuit diagram of Example 2.

[0017] Figure 4 This is the circuit diagram of Example 3.

[0018] Figure 5 This is the circuit diagram of Example 4.

[0019] Figure 6 This is the circuit diagram of Example 5. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings. Example 1

[0021] like Figure 2 As shown, an LED lamp device can be used for holiday lighting, which includes a light string, a head plug arranged at one end of the light string, and a tail plug arranged at the other end of the light string.

[0022] The light string is composed of forward and reverse dual-crystal LED lamp beads connected in series, and the forward and reverse dual-crystal LED lamp beads are composed of two LED chips connected in parallel and arranged in reverse. In each half cycle of the alternating current, only one LED chip works, and the two LED chips work alternately. The positive half-wave and negative half-wave of the alternating current are effectively utilized, and the product power factor is higher, and the power factor is close to 1; no rectification is required, and the effect of no jitter of the light source can be achieved; the alternating current changes periodically, and the switching of electrodes will cause the electrolysis reaction to be unstable, and the pins of the LED lamp beads will not be electrolyzed, thereby improving product safety and service life; reducing the use of components such as diodes, the production process can be simplified and the product cost can be reduced; because the LED lamp beads adopt a forward and reverse dual-crystal combination, the heat dissipation area of ​​the LED lamp beads is larger, which is twice the effective heat dissipation area of ​​traditional single-crystal LED lamp beads, and the heat dissipation effect is better, thereby extending the service life of the LED lamp beads; the pins of the LED lamp beads are Dumet wires, and the pins will not be electrolyzed and oxidized.

[0023] A voltage-reducing device is provided at one end of the light string. The voltage-reducing device in this embodiment is a polyester film capacitor C1. The polyester film capacitor C1 is connected in parallel with the discharge resistor R1 and is arranged on the same PCB board. The voltage-reducing device is arranged in the head plug. The polyester film capacitor C1 achieves voltage reduction by generating resistance through capacitive reactance. The polyester film capacitor is used as a voltage-reducing element. Compared with the voltage reduction by resistance, the polyester film capacitor generates less heat. The discharge resistor R1 discharges the polyester film capacitor C1.

[0024] The light string has an AC input end, and the AC power is stepped down by a step-down device for use in the light string. The AC input end includes a live wire L and a neutral wire N. The live wire L is connected to one end of the light string through a fuse FUSE2 and a step-down device, and the neutral wire N is connected to the other end of the light string through a fuse FUSE1.

[0025] The front end of the head plug is provided with two plug-ins, corresponding to the live wire L and the neutral wire N respectively. The tail plug is provided with two first sockets, and the first sockets are provided with first contacts. The plug-ins correspond to the first contacts one by one and are electrically connected. The LED lamp device can be used alone, or two LED lamp devices can be used in series by plugging the head plug and the tail plug. Example 2

[0026] like Figure 3 As shown, an LED lamp device can be used for holiday lighting, which includes a light string, a head plug arranged at one end of the light string, and a tail plug arranged at the other end of the light string.

[0027] The light string is composed of forward and reverse dual-crystal LED lamp beads connected in series, and the forward and reverse dual-crystal LED lamp beads are composed of two LED chips connected in parallel and arranged in reverse. In each half cycle of the alternating current, only one LED chip works, and the two LED chips work alternately. The positive half-wave and negative half-wave of the alternating current are effectively utilized, and the product power factor is higher, and the power factor is close to 1; no rectification is required, and the effect of no jitter of the light source can be achieved; the alternating current changes periodically, and the switching of electrodes will cause the electrolysis reaction to be unstable, and the pins of the LED lamp beads will not be electrolyzed, thereby improving product safety and service life; reducing the use of components such as diodes, the production process can be simplified and the product cost can be reduced; because the LED lamp beads adopt a forward and reverse dual-crystal combination, the heat dissipation area of ​​the LED lamp beads is larger, which is twice the effective heat dissipation area of ​​traditional single-crystal LED lamp beads, and the heat dissipation effect is better, thereby extending the service life of the LED lamp beads; the pins of the LED lamp beads are Dumet wires, and the pins will not be electrolyzed and oxidized.

[0028] A voltage-reducing device is provided at one end of the light string. The voltage-reducing device in this embodiment is a polyester film capacitor C1. The polyester film capacitor C1 is connected in parallel with the discharge resistor R1 and is arranged on the same PCB board. The voltage-reducing device is arranged in the tail plug. The polyester film capacitor C1 achieves voltage reduction by generating resistance through capacitive reactance. The polyester film capacitor is used as a voltage-reducing element. Compared with the voltage reduction by resistance, the polyester film capacitor generates less heat. The discharge resistor R1 discharges the polyester film capacitor C1.

[0029] The light string has an AC input end, and the AC power is stepped down by a step-down device for use in the light string. The AC input end includes a live wire L and a neutral wire N. The live wire L is connected to one end of the light string through a fuse FUSE2 and a step-down device, and the neutral wire N is connected to the other end of the light string through a fuse FUSE1.

[0030] The front end of the head plug is provided with two inserts, corresponding to the live wire L and the neutral wire N respectively. The tail plug is provided with two first sockets, and the first contacts are provided in the first sockets. The inserts correspond to the first contacts one by one and are electrically connected. The LED lamp device can be used alone, or two LED lamp devices can be used in series by plugging the head plug and the tail plug. The rear end of the head plug is provided with a second socket, and the second contacts are provided in the second socket to be electrically connected to the inserts, that is, the live wire L is connected to a insert, a first contact, a second contact and a step-down device; the neutral wire N is connected to a insert, a first contact and a second contact.

[0031] The neutral line N at the head plug is led out of the connector through a wire, and the connector outputs two wires that are respectively connected to one end of the light string and the first contact piece of the tail plug. Example 3

[0032] like Figure 4 As shown, an LED lamp device can be used for holiday lighting, which includes a light string, a head plug arranged at one end of the light string, and a tail plug arranged at the other end of the light string.

[0033] The light string is composed of forward and reverse dual-crystal LED lamp beads connected in series, and the forward and reverse dual-crystal LED lamp beads are composed of two LED chips connected in parallel and arranged in reverse. In each half cycle of the alternating current, only one LED chip works, and the two LED chips work alternately. The positive half-wave and negative half-wave of the alternating current are effectively utilized, and the product power factor is higher, and the power factor is close to 1; no rectification is required, and the effect of no jitter of the light source can be achieved; the alternating current changes periodically, and the switching of electrodes will cause the electrolysis reaction to be unstable, and the pins of the LED lamp beads will not be electrolyzed, thereby improving product safety and service life; reducing the use of components such as diodes, the production process can be simplified and the product cost can be reduced; because the LED lamp beads adopt a forward and reverse dual-crystal combination, the heat dissipation area of ​​the LED lamp beads is larger, which is twice the effective heat dissipation area of ​​traditional single-crystal LED lamp beads, and the heat dissipation effect is better, thereby extending the service life of the LED lamp beads; the pins of the LED lamp beads are Dumet wires, and the pins will not be electrolyzed and oxidized.

[0034] A voltage-reducing device is provided at one end of the light string. The voltage-reducing device in this embodiment is a polyester film capacitor C1. The voltage-reducing device is provided at one end of the light string close to the head plug. The voltage-reducing device is wrapped by an insulating package. The polyester film capacitor C1 achieves voltage reduction by generating resistance through capacitive reactance. By using the polyester film capacitor as a voltage-reducing element, the polyester film capacitor generates less heat than voltage reduction by resistance.

[0035] The light string has an AC input end, and the AC power is stepped down by a step-down device for use in the light string. The AC input end includes a live wire L and a neutral wire N. The live wire L is connected to one end of the light string through a fuse FUSE2, and the neutral wire N is connected to the other end of the light string through a fuse FUSE1 and a step-down device.

[0036] The front end of the head plug is provided with two inserts, corresponding to the live wire L and the neutral wire N respectively. The tail plug is provided with two first sockets, and the first contacts are provided in the first sockets. The inserts correspond to the first contacts one by one and are electrically connected. The LED lamp device can be used alone, or two LED lamp devices can be used in series by plugging the head plug and the tail plug. The rear end of the head plug is provided with a second socket, and the second contacts are provided in the second socket to be electrically connected to the inserts, that is, the live wire L is connected to a insert, a first contact, a second contact and a step-down device; the neutral wire N is connected to a insert, a first contact and a second contact. Example 4

[0037] like Figure 5 As shown, an LED lamp device can be used for holiday lighting, which includes a light string, a head plug arranged at one end of the light string, and a tail plug arranged at the other end of the light string.

[0038] The light string is composed of forward and reverse dual-crystal LED lamp beads connected in series, and the forward and reverse dual-crystal LED lamp beads are composed of two LED chips connected in parallel and arranged in reverse. In each half cycle of the alternating current, only one LED chip works, and the two LED chips work alternately. The positive half-wave and negative half-wave of the alternating current are effectively utilized, and the product power factor is higher, and the power factor is close to 1; no rectification is required, and the effect of no jitter of the light source can be achieved; the alternating current changes periodically, and the switching of electrodes will cause the electrolysis reaction to be unstable, and the pins of the LED lamp beads will not be electrolyzed, thereby improving product safety and service life; reducing the use of components such as diodes, the production process can be simplified and the product cost can be reduced; because the LED lamp beads adopt a forward and reverse dual-crystal combination, the heat dissipation area of ​​the LED lamp beads is larger, which is twice the effective heat dissipation area of ​​traditional single-crystal LED lamp beads, and the heat dissipation effect is better, thereby extending the service life of the LED lamp beads; the pins of the LED lamp beads are Dumet wires, and the pins will not be electrolyzed and oxidized.

[0039] A step-down device is provided at one end of the light string. The step-down device in this embodiment is a polyester film capacitor C1. The step-down device is provided at one end of the light string close to the tail plug. The step-down device is wrapped by an insulating package. The polyester film capacitor C1 achieves voltage reduction by generating resistance through capacitive reactance. By using the polyester film capacitor as a step-down element, the polyester film capacitor generates less heat than voltage reduction by resistance.

[0040] The light string has an AC input end, and the AC power is stepped down by a step-down device for use in the light string. The AC input end includes a live wire L and a neutral wire N. The live wire L is connected to one end of the light string through a fuse FUSE2 and a step-down device, and the neutral wire N is connected to the other end of the light string through a fuse FUSE1.

[0041] The front end of the head plug is provided with two inserts, corresponding to the live wire L and the neutral wire N respectively. The tail plug is provided with two first sockets, and the first contacts are provided in the first sockets. The inserts correspond to the first contacts one by one and are electrically connected. The LED lamp device can be used alone, or two LED lamp devices can be used in series by plugging the head plug and the tail plug. The rear end of the head plug is provided with a second socket, and the second contacts are provided in the second socket to be electrically connected to the inserts, that is, the live wire L is connected to a insert, a first contact, a second contact and a step-down device; the neutral wire N is connected to a insert, a first contact and a second contact. Example 5

[0042] like Figure 6 As shown, an LED lamp device can be used for holiday lighting, which includes a light string, a head plug arranged at one end of the light string, and a tail plug arranged at the other end of the light string.

[0043] The light string is composed of forward and reverse dual-crystal LED lamp beads connected in series, and the forward and reverse dual-crystal LED lamp beads are composed of two LED chips connected in parallel and arranged in reverse. In each half cycle of the alternating current, only one LED chip works, and the two LED chips work alternately. The positive half-wave and negative half-wave of the alternating current are effectively utilized, and the product power factor is higher, and the power factor is close to 1; no rectification is required, and the effect of no jitter of the light source can be achieved; the alternating current changes periodically, and the switching of electrodes will cause the electrolysis reaction to be unstable, and the pins of the LED lamp beads will not be electrolyzed, thereby improving product safety and service life; reducing the use of components such as diodes, the production process can be simplified and the product cost can be reduced; because the LED lamp beads adopt a forward and reverse dual-crystal combination, the heat dissipation area of ​​the LED lamp beads is larger, which is twice the effective heat dissipation area of ​​traditional single-crystal LED lamp beads, and the heat dissipation effect is better, thereby extending the service life of the LED lamp beads; the pins of the LED lamp beads are Dumet wires, and the pins will not be electrolyzed and oxidized.

[0044] A step-down device is provided at one end of the light string. The step-down device in this embodiment is a polyester film capacitor C1. The polyester film capacitor C1 is connected in parallel with the discharge resistor R1 and then connected to one end of the light string through the anti-surge resistor R2, and the other end of the light string is connected to the anti-surge resistor R3; the polyester film capacitor C1, the discharge resistor R1 and the anti-surge resistor R2 share the same PCB board, the step-down device is arranged in the head plug, and the anti-surge resistor R3 is arranged in the tail plug; the polyester film capacitor C1 achieves voltage reduction by generating resistance through capacitive reactance, and the polyester film capacitor is used as a step-down element. Compared with the voltage reduction by resistance, the polyester film capacitor generates less heat, and the discharge resistor R1 is the discharge of the polyester film capacitor C1, and the anti-surge resistors R2 and R3 can protect the LED lamp beads.

[0045] The light string has an AC input end, and the AC power is used by the light string after being stepped down by a step-down device. The AC input end includes a live wire L and a neutral wire N. The live wire L is connected to one end of the light string through a fuse FUSE2, a step-down device and an anti-surge resistor R2, and the neutral wire N is connected to the other end of the light string through a fuse FUSE1 and an anti-surge resistor R3.

[0046] The front end of the head plug is provided with two plug-ins, corresponding to the live wire L and the neutral wire N respectively. The tail plug is provided with two first sockets, and the first sockets are provided with first contacts. The plug-ins correspond to the first contacts one by one and are electrically connected. The LED lamp device can be used alone, or two LED lamp devices can be used in series by plugging the head plug and the tail plug.

Claims

1. An LED lamp device, characterized in that: The invention comprises a lamp string composed of positive and negative dual-crystal LED lamp beads connected in series, an AC input end for supplying AC power to the lamp string, and a voltage reducing device arranged at one end of the lamp string, wherein the voltage reducing device is a polyester film capacitor C1.

2. The LED lamp device according to claim 1, characterized in that: The voltage dropping resistor replaces the polyester film capacitor C1.

3. The LED lamp device according to claim 1, characterized in that: The polyester film capacitor C1 is connected in parallel with the discharge resistor R1.

4. The LED lamp device according to claim 2, characterized in that: The polyester film capacitor C1 is connected in parallel with the discharge resistor R1 and connected to one end of the light string through the anti-surge resistor R2, and the other end of the light string is connected to the anti-surge resistor R3.

5. The LED lamp device according to claim 1, characterized in that: The AC input end includes a live wire L and a neutral wire N. The live wire L is connected to one end of the light string through a fuse FUSE2, and the neutral wire N is connected to the other end of the light string through a fuse FUSE1.

6. The LED lamp device according to claim 1, characterized in that: The forward and reverse dual-crystal LED lamp bead is composed of two LED chips connected in parallel and arranged in reverse, and the pins of the LED lamp bead are Dumet wires.

7. The LED lamp device according to claim 1, characterized in that: The LED lamp device also includes a head plug arranged at one end of the light string and a tail plug arranged at the other end of the light string, the head plug is provided with an insert, the tail plug is provided with a first socket, the first socket is provided with a first contact, the insert corresponds to the first contact one by one and is electrically connected.

8. The LED lamp device according to claim 7, characterized in that: The voltage reduction device is arranged on the light string, the head plug or the tail plug.

9. The LED lamp device according to claim 7, characterized in that: A second socket is disposed at the rear end of the head plug, and a second contact piece electrically connected to the plug piece is disposed in the second socket.

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