LED lamp without distinguishing positive and negative polarities of power supply

Abstract

The LED lamp without distinguishing the positive polarity and the negative polarity of the power source is characterized in that the LED lamp comprises an LED driving power source and an LED light source plate, the LED light source plate comprises an LED lamp set, a first diode and a second diode, the LED lamp set comprises a plurality of LED lamps which are sequentially connected in series, the output end of the LED driving power source is connected with the two ends of the LED lamp set, and the output end of the LED driving power source is connected with the two ends of the LED lamp set. The first diode and the second diode are connected with the LED lamp set in parallel, the negative electrode of the first diode and the negative electrode of the second diode are connected with the positive electrode of the LED lamp set, and the positive electrode of the first diode and the positive electrode of the second diode are connected with the negative electrode of the LED lamp set. According to the utility model, the forward conduction and reverse cut-off characteristics of the diode are utilized, the problem that the LED light source is damaged due to reverse connection of the power supply is avoided, and the reject ratio and the reworking time of the LED light source production process are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of LED lamps, and in particular to an LED lamp which does not distinguish between positive and negative polarities of a power supply. Background Art

[0002] During the lamp assembly process, the degree of automated welding is not high, and most of the welding is done manually. It is easy for the positive and negative polarities of the power output terminal and the positive and negative polarities of the light source board to be reversed, which not only increases the cost of manual rework, but also causes damage to the LED light source board. Summary of the invention

[0003] The utility model aims to provide an LED lamp which does not distinguish between the positive and negative polarities of a power supply.

[0004] In order to achieve the above purpose, the technical solution of the utility model is:

[0005] An LED lamp that does not distinguish between the positive and negative polarities of a power supply, characterized in that the LED lamp comprises an LED driving power supply and an LED light source board, the LED light source board comprises an LED lamp group, a first diode and a second diode, the LED lamp group comprises a plurality of LED lamps connected in series in sequence, the output end of the LED driving power supply is connected to the two ends of the LED lamp group, the first diode and the second diode are connected in parallel with the LED lamp group, the cathode of the first diode and the cathode of the second diode are connected to the anode of the LED lamp group, and the anode of the first diode and the anode of the second diode are connected to the cathode of the LED lamp group.

[0006] Furthermore, the LED driving power supply includes an AC-DC converter.

[0007] Furthermore, the LED lamp comprises a heat dissipation shell, and the LED driving power supply and the LED light source board are installed in the heat dissipation shell.

[0008] The utility model utilizes the characteristics of a diode that it conducts in the forward direction and cuts off in the reverse direction, thereby avoiding the problem of damaging the LED light source due to reverse connection of the power supply, and reducing the defect rate of the LED light source production process and the rework time. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the circuit structure of the LED light source board of the utility model;

[0010] Figure 2 It is a schematic diagram of the system structure of the utility model.

[0011] Reference numerals:

[0012] 1 heat dissipation shell, 2 LED driver power supply, 3 LED light source board,

[0013] D1 is the first diode, D2 is the second diode. DETAILED DESCRIPTION

[0014] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] The utility model discloses an LED lamp which does not distinguish between positive and negative polarity of power supply, such as Figure 1 and Figure 2 As shown, the LED lamp includes an LED driving power supply 2 and an LED light source board 3. The LED light source board 3 includes an LED lamp group, a first diode D1 and a second diode D2. The LED lamp group includes a plurality of LED lamps connected in series in sequence.

[0016] The LED driving power supply 2 includes an AC-DC converter. The input end of the LED driving power supply 2 is connected to AC 220V. The output end of the LED driving power supply 2 outputs a DC voltage for powering the LED lamp group. The output end of the LED driving power supply 2 is connected to both ends of the LED lamp group.

[0017] like Figure 1 As shown, the first diode D1 and the second diode D2 are connected in parallel with the LED lamp group, the cathode of the first diode D1 and the cathode of the second diode D2 are connected to the anode of the LED lamp group, and the anode of the first diode D1 and the anode of the second diode D2 are connected to the cathode of the LED lamp group.

[0018] When the LED driving power supply 2 is supplying power normally, the positive electrode of the LED driving power supply 2 is connected to the negative electrode of the first diode D1, the negative electrode of the second diode D2 is connected to the positive electrode of the LED lamp group, the negative electrode of the LED driving power supply 2 is connected to the negative electrode of the first diode D1, the positive electrode of the second diode D2 is connected to the negative electrode of the LED lamp group, the first diode D1 and the second diode D2 are cut off, the LED lamp group is turned on, and all LED lamps work normally.

[0019] When the positive and negative poles of the LED driving power supply 2 are reversed, the positive pole of the LED driving power supply 2 is connected to the positive pole of the first diode D1, the positive pole of the second diode D2 is connected to the negative pole of the LED lamp group, the negative pole of the LED driving power supply 2 is connected to the negative pole of the first diode D1, the negative pole of the second diode D2 is connected to the positive pole of the LED lamp group, the first diode D1 and the second diode D2 are turned on, the LED lamp group has no voltage and does not work, and the LED lamp group is protected by the first diode D1 and the second diode D2.

[0020] like Figure 2As shown, the LED lamp further includes a heat dissipation housing 1 , in which an LED driving power supply 2 and an LED light source board 3 are installed.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An LED lamp that does not distinguish between positive and negative polarity of the power supply, characterized in that: The LED lamp includes an LED driving power supply and an LED light source board, the LED light source board includes an LED lamp group, a first diode and a second diode, the LED lamp group includes a plurality of LED lamps connected in series in sequence, the output end of the LED driving power supply is connected to the two ends of the LED lamp group, the first diode and the second diode are connected to the LED lamp group in parallel, the cathode of the first diode and the cathode of the second diode are connected to the anode of the LED lamp group, and the anode of the first diode and the anode of the second diode are connected to the cathode of the LED lamp group.

2. The LED lamp that does not distinguish between positive and negative polarity of the power supply according to claim 1, characterized in that: The LED driving power supply includes an AC-DC converter.

3. The LED lamp that does not distinguish between positive and negative polarity of the power supply according to claim 1, characterized in that: The LED lamp comprises a heat dissipation shell, and the LED driving power supply and the LED light source board are installed in the heat dissipation shell.

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