TWM493634U - LED lamp compatible with electronic stabilizer - Google Patents

Description

LED tube compatible with electronic ballast

The present invention relates to an LED tube, and more particularly to an inventor of an innovative structure of an LED tube that is compatible with an electronic ballast.

According to the conventional lamp holder design, it is used to illuminate a traditional lamp such as a T5 or T8 lamp. The lamp holder is usually provided with an electronic ballast for lighting a conventional lamp such as T5 or T8. Conventional lamps based on T5 or T8 must pass through a momentary high voltage to heat their filaments and ionize the gas inside the tube, so that the lamp can be smoothly illuminated.

As described above, if an LED lamp tube is inserted into a conventional lamp holder, when the electronic ballast is activated, since the LED lamp tube structure is completely different from that of the conventional lamp tube, the electronic ballast and the LED lamp tube will be subjected to When it is turned on, it is burned by high voltage and high current shock. Therefore, the lamp holder is not compatible with today's LED tubes.

In view of the inconvenience caused by the above-mentioned conventional lamp holders being incompatible with the current LED lamps, a follow-up manufacturer has developed an LED lamp which is compatible with the electronic ballast, such as the announcement No. M482233 The new patent case "Improved for the improvement of the LED lamp of the T5 / T8 electronic ballast" is disclosed; however, the above-mentioned prior art technology has the advantages of ensuring the complete start of the LED lamp and shortening the lighting time, but The conventional case is still because the circuit is too complicated and the integrated circuit is installed in the internal structure, etc., and there is a drawback that the manufacturing cost of the industry is increased and the economic benefits of the industry are not satisfactory. Moreover, the electronic ballast is turned on. It will be affected by instantaneous high voltage and surge current. This part will also increase the probability and risk of LED lamp product failure.

Therefore, in view of the problems existing in the above-mentioned conventional LED tube structure, how to develop an innovative structure with more ideal and practicality, the relevant industry must further strive to develop the goal and direction of breakthrough.

In view of this, the creator has been engaged in the manufacturing development and design experience of related products for many years. After the detailed design and careful evaluation of the above objectives, the creator will have a practical and practical creation.

The main purpose of this creation is to provide an LED lamp that is compatible with an electronic ballast. The technical problem to be solved is to develop a new type of LED lamp structure that is more ideal and practical. Innovate breakthroughs.

The technical feature of the present invention is mainly that the LED lamp tube system comprises: a tube body, two electrodes respectively disposed at two ends, and the inside of the tube body comprises: two pre-starting circuits, and one of the pre-starting circuits is respectively electrically Connected to the electrode provided at the two ends of the tube; a rectifier circuit comprising a bridge rectifier circuit formed by a plurality of fast diodes, one end of the rectifier circuit being electrically connected to one end of the pre-start circuit; The detecting circuit has one end electrically connected to the other end of the rectifying circuit; at least one LED string is formed by connecting a plurality of LED elements in series, one end of the LED string is electrically connected to the rectifying circuit; and a protection circuit includes The utility model is composed of a plurality of negative temperature coefficient resistors, and the protection circuit is electrically connected to the other end of the LED light string in a series mode.

With this innovative and unique design, this creation can effectively prevent the burning of LED components to improve the practical use of LED lamp products in comparison with the prior art, and omitting the setting of the integrated circuit can simplify the LED lamp circuit. Structure to achieve better industrial economic benefits that reduce manufacturing costs in the industry.

Please refer to Figures 1, 2 and 3 for a preferred embodiment of the LED lamp which is compatible with the electronic ballast. However, these embodiments are for illustrative purposes only and are not applicable to the patent application. Structural limitations. The LED lamp tube A includes the following components: a tube body 10, two electrodes 20 are respectively disposed at the two ends, and the inside of the tube body 10 includes: two pre-starting circuits 30, and one of the pre-starting circuits 30 is electrically connected. An electrode 20 is disposed at the two ends of the tube body 10; a rectifier circuit 40 includes a bridge rectifier circuit type formed by a plurality of fast diodes 41, and one end of the rectifier circuit 40 is electrically connected to the pre-start circuits One end of the voltage detecting circuit 50 is electrically connected to the other end of the rectifying circuit 40; at least one LED string 60 is formed by connecting a plurality of LED elements 61 in series, and one end of the LED string 60 is electrically connected. The protection circuit 70 is composed of a plurality of negative temperature coefficient (NTC) resistors 71. The protection circuit 70 is electrically connected to the other end of the LED string 60 in a series connection. The negative temperature coefficient resistor 71 can suppress the high voltage and the surge current generated when the electronic ballast 81 is activated to prevent the LED element 61 from being burnt.

Wherein, the negative temperature coefficient resistor 71 can be made of a metal oxide ceramic material, and the use characteristic of the negative temperature coefficient resistor 71 is that the temperature rises and the resistance decreases, so that it can be used to suppress the surge current without being on the circuit. The total current causes too much impact.

As shown in FIG. 2, the pre-start circuit 30 can include a positive temperature coefficient resistor 31 that is connected in parallel between the two electrodes 20 of the tube 10.

As shown in FIG. 2, the complex negative temperature coefficient resistor 71 of the protection circuit 70 can be either a series connection type or a parallel connection type.

In addition, the plurality of negative temperature coefficient resistors 71 of the protection circuit 70, the serial connection or the parallel connection position may be located at any end of the LED element 61 of the LED string 60 in series, or in a series array of LED elements 61, and the like. .

In accordance with the technical characteristics of the above structure, the following is a description of the use of the present invention: The LED tube A of the present invention, as shown in Fig. 1, can be installed on a lamp holder 80 for a T5/T8 lamp; After the power switch is turned on, the electronic ballast 81 in the lamp holder 80 will generate an instantaneous high voltage, and the current generated by the voltage is transmitted to the pre-start circuit 30 via the electrode 20 because of the positive temperature coefficient resistance in the pre-start circuit 30. 31 has a resistance value, so it can replace the filament in the conventional T5/T8 tube, so that the electronic ballast 81 can not be burnt due to short circuit, and the filament of the fluorescent tube can be effectively simulated to help the electronic ballast 81 start properly and The current is abnormally protected, and the current is re-flowed to the rectifier circuit 40, which converts the alternating current into a direct current and then flows to the LED light string 60. At this time, the negative temperature coefficient resistance is set by the protection circuit 70. The 71 can absorb and suppress the high voltage and the surge current generated at this time, thereby preventing the LED element 61 of the LED string 60 from being burnt.

Efficacy Description: The "LED lamp compatible with electronic ballast" disclosed in this work mainly consists of the tube body, pre-start circuit, rectifier circuit, voltage detection circuit, LED string and protection with negative temperature coefficient resistance. The innovative unique structure and technical features of the circuit make the following functions and advantages of the proposed structure in comparison with the prior art structure: 1. Since the creation protection circuit is a negative temperature coefficient The resistor is formed by the resistor, and the negative temperature coefficient resistor can absorb the high voltage and the surge current generated when the LED tube is turned on, thereby effectively preventing the LED component from being burnt, and achieving the practical progress of improving the safety of the LED lamp product. 2. The internal structure of the LED tube of the present invention omits the setting of the conventional integrated circuit, thereby further simplifying the circuit structure of the LED tube and achieving better industrial economic benefits of reducing the manufacturing cost of the industry.

On the other hand, the pre-start circuit of the present invention includes another technical feature of a positive temperature coefficient resistor, which has an equivalent fuse in addition to the functions of replacing the conventional filament, avoiding a short circuit to prevent the electronic ballast from being burnt, and the like. The function can achieve overcurrent protection.

The disclosures of the above embodiments are used to specifically explain the present creation, and although the descriptions are made through specific terms, the scope of patents of the novel creation cannot be limited thereby; those skilled in the art can understand the spirit of the creation. Changes and modifications are made to the equivalent purpose, and such changes and modifications are to be included in the scope defined by the scope of the patent application as described later.

A‧‧‧LED tube 10‧‧‧tube 20‧‧‧electrode 30‧‧‧pre-start circuit 31‧‧‧positive temperature coefficient resistor 40‧‧‧Rectifier circuit 41‧‧‧ fast diode 50‧ ‧ Voltage detection circuit 60‧‧‧LED string 61‧‧‧LED components 70‧‧‧Protection circuit 71‧‧‧Negative temperature coefficient resistor 80‧‧‧ lamp holder 81‧‧‧ Electronic ballast

Figure 1 is a perspective view of a preferred embodiment of the present authoring structure. Figure 2 is a schematic circuit diagram of a preferred embodiment of the present authoring structure. Figure 3 is a block diagram of a preferred embodiment of the present authoring structure.

20‧‧‧ electrodes

30‧‧‧Pre-start circuit

31‧‧‧ Positive temperature coefficient resistor

40‧‧‧Rectifier circuit

41‧‧‧fast diode

50‧‧‧Voltage detection circuit

60‧‧‧LED string lights

61‧‧‧LED components

70‧‧‧Protection circuit

71‧‧‧Negative temperature coefficient resistor

Claims (4)

An LED lamp tube compatible with an electronic ballast, the LED lamp tube system comprises: a tube body, two ends respectively provided with two electrodes, and the inside of the tube body comprises: two pre-starting circuits, one end of each pre-starting circuit Electrically connected to the electrodes provided at the two ends of the tube; a rectifying circuit comprising a bridge rectifier circuit formed by a plurality of fast diodes, one end of the rectifier circuit being electrically connected to one end of the pre-starting circuits a voltage detecting circuit, one end of which is electrically connected to the other end of the rectifying circuit; at least one LED string is formed by connecting a plurality of LED elements in series, and one end of the LED string is electrically connected to the rectifying circuit; The circuit comprises a plurality of negative temperature coefficient resistors, wherein the protection circuit is electrically connected to the other end of the LED string in a series mode; the negative temperature coefficient resistor can suppress the high voltage and the surge current generated when the electronic ballast is started To prevent the LED components from burning out. The LED lamp compatible with an electronic ballast according to claim 1, wherein the pre-starting circuit comprises a positive temperature coefficient resistor, and the positive temperature coefficient resistor is connected in parallel to the two electrodes of the tube body. between. An LED lamp compatible with an electronic ballast according to claim 2, wherein the plurality of negative temperature coefficient resistances of the protection circuit are either a series connection type or a parallel connection type. The LED lamp tube compatible with the electronic ballast according to claim 2, wherein the plurality of negative temperature coefficient resistances of the protection circuit are in a series connection type and a parallel connection type; and the series connection or The parallel position is located at either end of the LED elements of the LED string or in a series array of LED elements.