LED lamp tube capable of setting power

Abstract

The utility model discloses an LED lamp tube with settable power, which comprises a tube body, an LED light-emitting module and a constant current driving module, the tube body comprises a light-transmitting tube and two lamp holders, the two lamp holders are respectively arranged at two ends of the light-transmitting tube, two metal tube pins are arranged on the end face of one lamp holder, the lamp holder is called as a connecting lamp holder, and the LED light-emitting module is arranged on the connecting lamp holder. Two metal pins are arranged at one end of the constant-current driving module, the two metal pins and the two metal pins are correspondingly inserted in a one-to-one mode, the constant-current driving module is connected with the LED light-emitting module, the constant-current driving module comprises an adjusting switch, the adjusting switch is a dial switch, a dial key of the dial switch faces the end face connected with the lamp holder, and the LED light-emitting module is connected with the lamp holder. The adjusting direction of the dial switch is perpendicular to a connecting line of the two metal pins at the end face of the connecting lamp holder, an adjusting hole is formed in the end face of the connecting lamp holder and located between the two metal pins, and a dial key of the dial switch is exposed at the position of the adjusting hole. The constant-current driving module has the advantages that the cost of the lamp holder is not increased, and the mounting difficulty of the constant-current driving module can be reduced.

Description

Technical Field

[0001] The utility model relates to an LED lamp tube, in particular to an LED lamp tube with adjustable power. Background Art

[0002] like Figure 1 As shown, a traditional LED lamp tube generally includes a tube body, an LED light-emitting module, and a constant current driver module. The tube body includes a cylindrical light-transmitting tube and two lamp holders, which are respectively installed at both ends of the light-transmitting tube. The interiors of the two lamp holders are connected to the interior of the light-transmitting tube. Two hollow metal pins for connecting to the mains voltage are installed on the end face of one lamp holder. The two metal pins are spaced apart up and down. The constant current driver module extends from the interior of the lamp holder into the interior of the light-transmitting tube. The constant current driver module is provided with two metal pins for connecting to its working power supply at one end near the lamp holder. The two metal pins are plugged into the two metal pins one by one. The LED light-emitting module is installed inside the light-transmitting tube, and the constant current driver module is connected to the LED light-emitting module. When the two metal pins are connected to the mains voltage, the constant current driver module converts the mains voltage into a DC current and outputs it to the LED light-emitting module, driving the LED light-emitting module. The power of the LED lamp tube is directly related to the brightness of the LED light-emitting module. The brightness of the LED light-emitting module is determined by the DC current output by the constant current driver module.

[0003] Because different user groups in the market have varying power requirements, LED lamps with adjustable power levels have emerged in recent years to reduce the inventory pressure on LED lamp manufacturers. These adjustable power LED lamps allow the power of the LED lamp to be adjusted based on the user's actual needs, significantly reducing the inventory pressure on LED lamp manufacturers. Existing adjustable power LED lamps add an adjustment switch to the traditional LED lamp's constant current driver module. Setting the adjustment switch to different states changes the DC current output by the constant current driver module. Thus, existing adjustable power LED lamps can meet different power requirements by simply adjusting the state of the adjustment switch.

[0004] In existing LED lamps with adjustable power, the lamp head usually has two parts, one part ( Figure 1 The middle B area is sleeved on the light-transmitting tube and connected to the light-transmitting tube, and the other part is located on one side of the light-transmitting tube ( Figure 1 (A part in the middle). Figure 2As shown, the adjusting switch is located inside the A region part of the lamp holder, and is realized by a multi-step side adjusting toggle switch, the adjusting handle of the multi-step toggle switch faces the side wall of the A region part of the lamp holder, and a adjusting hole is correspondingly arranged on the side wall of the A region part of the lamp holder, so that the adjusting handle of the multi-step toggle switch can pass through the side wall of the lamp holder, and the adjusting handle can be manually operated to set the state of the multi-step toggle switch. In the existing LED lamp tube capable of setting the power size, the multi-step toggle switch usually needs to have three states (corresponding to three powers), the adjusting stroke of the adjusting handle is relatively long, and the adjusting direction is along the length direction of the LED lamp tube, and the length of the traditional A region part of the lamp holder is usually short, therefore, the length of the lamp holder in the A region part of the existing LED lamp tube capable of setting the power size needs to be lengthened on the basis of the traditional lamp holder to meet the operation requirement of the adjusting handle, but this leads to the increase of the cost of the lamp holder. In addition, the adjusting handle of the multi-step toggle switch needs to pass through the side wall of the lamp holder, which leads to the increase of the installation difficulty of the constant current driving module. SUMMARY

[0005] The technical problem to be solved by the utility model is to provide an LED lamp tube capable of setting the power size without leading to the increase of the cost of the lamp holder and reducing the installation difficulty of the constant current driving module.

[0006] The utility model adopts the technical scheme that a LED lamp tube capable of setting the power size, including the pipe body, LED light emitting module and constant current driving module, the pipe body includes the cylindrical light transmission pipe and two lamp holders, two lamp holders are installed at both ends of the light transmission pipe respectively, the inside of two lamp holders is communicated with the inside of the light transmission pipe, the end face of a lamp holder is installed with two hollow metal pins for connecting the mains voltage, the two metal pins are distributed at intervals, the constant current driving module extends from the inside of the connecting lamp holder to the inside of the light transmission pipe, the one end of the constant current driving module near the connecting lamp holder is equipped with two metal pins for connecting the working power supply, two metal pins are inserted on two metal pins one by one, the LED light emitting module is installed in the inside of the light transmission pipe, the constant current driving module is connected with the LED light emitting module, the constant current driving module includes the adjusting switch for setting the output of the direct current, the adjusting switch is the dial switch, the dial switch dial key faces the end face of the connecting lamp holder, and its adjusting direction is perpendicular to the connecting line of two metal pins at the end face of the connecting lamp holder, the end face of the connecting lamp holder is provided with the adjusting hole, the adjusting hole is located between two metal pins, and the dial key of the dial switch is exposed at the adjusting hole.

[0007] Compared with the prior art, the advantages of the utility model lie in that the adjusting switch is realized through the code switch, the dial key of the code switch faces the end surface of the connecting lamp holder, and the adjusting direction thereof is perpendicular to the connection line of the two metal pins at the end surface of the connecting lamp holder, the end surface of the connecting lamp holder is provided with an adjusting hole, the adjusting hole is located between the two metal pins, and the dial key of the code switch is exposed at the adjusting hole, because the adjusting stroke of the code switch is short, the size of the end surface of the connecting lamp holder perpendicular to the connection line direction of the two metal pins at the end surface of the connecting lamp holder can generally meet the opening requirement of the adjusting hole, so that the length of the lamp holder does not need to be additionally increased, in addition, the dial key of the code switch faces the end surface of the connecting lamp holder, when the constant current driving module is installed, the dial key of the code switch will not cause obstruction, and the installation difficulty of the constant current driving module is reduced, so that the utility model will not cause the increase of the cost of the lamp holder, and the installation difficulty of the constant current driving module can be reduced.

[0008] Further, the constant current driving module comprises a rectifier circuit and a constant current conversion circuit, the rectifier circuit has two input ends, a positive output end and a negative output end, the two input ends of the rectifier circuit are connected with the two metal pins one by one, the rectifier circuit is used for converting the alternating voltage inputted by the two input ends into a direct current voltage and outputting between the positive output end and the negative output end; the constant current conversion circuit comprises the code switch, has a positive pole, a negative pole, a positive output end and a negative output end, the positive pole of the constant current conversion circuit is connected with the positive output end of the rectifier circuit, the negative pole of the constant current conversion circuit is connected with the negative output end of the rectifier circuit, the constant current conversion circuit is used for converting the direct current voltage inputted between the positive pole and the negative pole into a direct current and outputting between the positive output end and the negative output end, the size of the direct current outputted between the positive output end and the negative output end of the constant current conversion circuit can be changed by dialing the dial key of the code switch, the positive pole of the LED light emitting module is connected with the positive output end of the constant current conversion circuit, and the negative pole of the LED light emitting module is connected with the negative output end of the constant current conversion circuit.

[0009] Further, the constant current conversion circuit further comprises a first integrated circuit of KP126X type, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first capacitor, a second capacitor, a first diode and a first inductor, the dial switch is a two-way dial switch, having a first end, a second end, a third end, a fourth end and two dial keys, one of the dial keys is used to realize the on-off between the first end and the second end, and the other dial key is used to realize the on-off between the third end and the fourth end, the second capacitor is an electrolytic capacitor, one end of the first capacitor, the fourth pin of the first integrated circuit, the negative electrode of the first diode, one end of the first resistor and the positive electrode of the second capacitor are connected, and the connection end is both the positive electrode of the constant current conversion circuit and the positive output end of the constant current conversion circuit, the negative electrode of the second capacitor, the other end of the first resistor and one end of the first inductor are connected, and the connection end is the negative output end of the constant current conversion circuit, the other end of the first inductor, the positive electrode of the first diode and the fifth pin and the sixth pin of the first integrated circuit are connected, the first pin of the first integrated circuit and one end of the second resistor are connected, one end of the third resistor, one end of the fourth resistor, one end of the fifth resistor and the seventh pin of the first integrated circuit are connected, the other end of the fourth resistor and the first end of the dial switch are connected, the other end of the fifth resistor and the third end of the dial switch are connected, the second end and the fourth end of the dial switch, the other end of the second resistor, the other end of the third resistor, the third pin of the first integrated circuit and the other end of the first capacitor are connected, and the connection end is the negative electrode of the constant current conversion circuit. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a structure schematic view of a traditional LED lamp tube;

[0011] Figure 2 It is an installation position schematic view of a multi-grade dial switch of an existing LED lamp tube with power size setting;

[0012] Figure 3 It is an installation position schematic view of a dial switch of an LED lamp tube with power size setting according to the present application;

[0013] Figure 4 It is a lamp cap end surface schematic view of an LED lamp tube with power size setting according to the present application;

[0014] Figure 5 It is a circuit diagram of a constant current driving module of an LED lamp tube with power size setting according to the present application. DETAILED DESCRIPTION

[0015] The utility model is further described in detail below with reference to the drawings.

[0016] Embodiment one: as Figure 3 and Figure 4 A LED lamp tube with adjustable power size is shown in the drawings, which comprises a tube body, an LED light-emitting module and a constant current driving module. The tube body comprises a cylindrical light-transmitting tube and two lamp holders. The two lamp holders are respectively installed at the two ends of the light-transmitting tube, and the interiors of the two lamp holders and the interior of the light-transmitting tube are communicated. A hollow metal pin 1 for connecting the mains voltage is installed on the end face of one lamp holder, and the lamp holder is called a connecting lamp holder 2. The two metal pins 1 are distributed at intervals. The constant current driving module extends from the interior of the connecting lamp holder 2 to the interior of the light-transmitting tube. Two metal pins 4 for connecting the working power source of the constant current driving module are arranged at the end of the constant current driving module close to the connecting lamp holder 2. The two metal pins 4 are respectively inserted into the two metal pins 1. The LED light-emitting module is installed in the interior of the light-transmitting tube. The constant current driving module is connected with the LED light-emitting module. The constant current driving module comprises an adjusting switch for setting the size of the output direct current. The adjusting switch is a DIP switch S1. The DIP switch S1 is arranged on the end face of the connecting lamp holder 2, and the adjusting direction of the DIP switch S1 is perpendicular to the connecting line of the two metal pins 1 at the end face of the connecting lamp holder 2. An adjusting hole 3 is arranged on the end face of the connecting lamp holder 2. The adjusting hole 3 is located between the two metal pins 1. The DIP switch S1 is exposed at the adjusting hole 3.

[0017] In the embodiment, the adjusting stroke of the DIP switch S1 is short. The size of the end face of the connecting lamp holder 2 perpendicular to the connecting line of the two metal pins 1 at the end face of the connecting lamp holder 2 can meet the opening requirement of the adjusting hole 3, so that the length of the lamp holder does not need to be additionally increased. In addition, the DIP switch S1 is arranged on the end face of the connecting lamp holder 2. When the constant current driving module is installed, the DIP switch S1 will not hinder the installation, and the installation difficulty of the constant current driving module is reduced.

[0018] Embodiment two: the embodiment is basically same as embodiment one, the difference is that: in this embodiment, the constant current drive module includes rectifier circuit and constant current conversion circuit, the rectifier circuit has two input terminals, positive output terminal and negative output terminal, the two input terminals of the rectifier circuit are connected with the two metal pins 4 one by one, the rectifier circuit is used for converting the alternating voltage connected with its two input terminals into direct current voltage and outputting between its positive output terminal and negative output terminal; the constant current conversion circuit includes the code switch S1, has the positive pole, the negative pole, the positive output terminal and the negative output terminal, the positive pole of the constant current conversion circuit is connected with the positive output terminal of the rectifier circuit, the negative pole of the constant current conversion circuit is connected with the negative output terminal of the rectifier circuit, the constant current conversion circuit is used for converting the direct current voltage connected between its positive pole and negative pole into direct current and outputting between its positive output terminal and negative output terminal, by turning the code switch S1, the size of the direct current output between the positive output terminal and negative output terminal of the constant current conversion circuit can be changed, the positive pole of the LED light emitting module is connected with the positive output terminal of the constant current conversion circuit, the negative pole of the LED light emitting module is connected with the negative output terminal of the constant current conversion circuit.

[0019] Embodiment three: the embodiment is basically same as embodiment two, the difference is that: in this embodiment, as shown in Figure 5 the constant current conversion circuit further includes the first integrated circuit U1 of KP126X type, the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, the fifth resistor R5, the first capacitor C1, the second capacitor C2, the first diode D1 and the first inductor L1, the code switch S1 is two-way code switch, has the first end, the second end, the third end, the fourth end and two keys, one of the keys is used to realize the on-off between its first end and second end, the other key is used to realize the on-off between its third end and fourth end, the second capacitor C2 is electrolytic capacitor, one end of the first capacitor C1, the fourth pin of the first integrated circuit U1, the negative pole of the first diode D1, one end of the first resistor R1 and the positive pole of the second capacitor C2 are connected, and the connection end is both the positive pole of the constant current conversion circuit and the positive output terminal of the constant current conversion circuit, the negative pole of the second capacitor C2, the other end of the first resistor R1 and one end of the first inductor L1 are connected, and the connection end is the negative output terminal of the constant current conversion circuit, the other end of the first inductor L1, the positive pole of the first diode D1 and the fifth pin and sixth pin of the first integrated circuit U1 are connected, the first pin of the first integrated circuit U1 and one end of the second resistor R2 are connected, one end of the third resistor R3, one end of the fourth resistor R4, one end of the fifth resistor R5 and the seventh pin of the first integrated circuit U1 are connected, the other end of the fourth resistor R4 and the first end of the code switch S1 are connected, the other end of the fifth resistor R5 and the third end of the code switch S1 are connected, the second end and fourth end of the code switch S1, the other end of the second resistor R2, the other end of the third resistor R3, the third pin of the first integrated circuit U1 and the other end of the first capacitor C1 are connected, and the connection end is the negative pole of the constant current conversion circuit.

[0020] In the embodiment, the dial switch S1 is a two-way dial switch, has four states, the resistance values of the fourth resistor R4 and the fifth resistor R5 are different, the resistance value of the parallel connection of the fourth resistor R4 and the fifth resistor R5 is also different from the resistance values of the fourth resistor R4 and the fifth resistor R5, by setting the connection and disconnection states between the first end and the second end, the third end and the fourth end of the dial switch S1, the resistance value between the seventh pin and the third pin of the first integrated circuit U1 can be changed, thereby setting the output DC current size between the positive output end and the negative output end of the constant current conversion circuit, the resistance value between the seventh pin and the third pin of the first integrated circuit U1 can be set to four different resistance values, the output DC current between the positive output end and the negative output end of the constant current conversion circuit has four different sizes, thereby realizing the setting of four power sizes of the LED lamp tube.

[0021] In conclusion, the LED lamp tube with the settable power size of the utility model realizes the adjustment switch by adopting the dial switch S1 with a short adjustment stroke, and the dial key of the dial switch S1 is directed to the end surface of the connecting lamp holder 2, so that the adjustment direction is perpendicular to the connection line of the two metal pins 1 at the end surface of the connecting lamp holder 2, thereby exposing the dial key of the dial switch S1 by opening the adjustment hole 3 on the end surface of the connecting lamp holder 2, and the dial key of the dial switch S1 can be adjusted at the adjustment hole 3, the size of the end surface of the connecting lamp holder 2 perpendicular to the connection line direction of the two metal pins 1 at the end surface of the connecting lamp holder 2 can generally meet the opening requirement of the adjustment hole 3, so that the length of the lamp holder does not need to be additionally increased, since the dial key of the dial switch S1 is directed to the end surface of the connecting lamp holder 2, the dial key of the dial switch S1 does not need to be worn out from the side wall of the lamp holder, and the dial key of the dial switch S1 does not hinder the installation of the constant current driving module, thereby reducing the installation difficulty of the constant current driving module.

Claims

1. An LED lamp tube with adjustable power, comprising a tube body, an LED light-emitting module and a constant current drive module, the tube body comprising a cylindrical light-transmitting tube and two lamp holders, the two lamp holders being respectively mounted at both ends of the light-transmitting tube, the interiors of the two lamp holders being communicated with the interior of the light-transmitting tube, two hollow metal pins for accessing the mains voltage being mounted on the end face of one lamp holder, the lamp holder being referred to as a connecting lamp holder, the two metal pins being spaced apart up and down, the constant current drive module extending from the interior of the connecting lamp holder into the light-transmitting tube, the constant current drive module being provided with two metal pins for accessing its working power supply at one end close to the connecting lamp holder, the two metal pins being plugged into the two metal pins in a one-to-one correspondence, the LED light-emitting module being mounted inside the light-transmitting tube, the constant current drive module being connected to the LED light-emitting module, the constant current drive module comprising an adjustment switch for setting the size of the DC current output thereof, characterized in that The adjustment switch is a dip switch, the dial key of the dip switch faces the end face of the connection lamp holder, and its adjustment direction is perpendicular to the line connecting the two metal pins at the end face of the connection lamp holder. An adjustment hole is opened on the end face of the connection lamp holder, and the adjustment hole is located between the two metal pins. The dial key of the dip switch is exposed at the adjustment hole.

2. The LED lamp with adjustable power according to claim 1, characterized in that The constant current drive module includes a rectifier circuit and a constant current conversion circuit. The rectifier circuit has two input terminals, a positive output terminal, and a negative output terminal. The two input terminals of the rectifier circuit are connected to the two metal pins in a one-to-one correspondence. The rectifier circuit is used to convert the AC voltage connected to its two input terminals into a DC voltage and output it between its positive output terminal and negative output terminal. The constant current conversion circuit includes the DIP switch, which has a positive pole, a negative pole, a positive output terminal, and a negative output terminal. The positive pole of the constant current conversion circuit is connected to the positive output terminal of the rectifier circuit, and the negative pole of the constant current conversion circuit is connected to the negative output terminal of the rectifier circuit. The constant current conversion circuit is used to convert the DC voltage connected between its positive and negative poles into a DC current and output it between its positive and negative output terminals. By toggling the dial key of the DIP switch, the magnitude of the DC current output between the positive and negative output terminals of the constant current conversion circuit can be changed. The positive pole of the LED light-emitting module is connected to the positive output terminal of the constant current conversion circuit, and the negative pole of the LED light-emitting module is connected to the negative output terminal of the constant current conversion circuit.

3. The LED lamp with adjustable power according to claim 2, characterized in that The constant current conversion circuit also includes a first integrated circuit of model KP126X, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first capacitor, a second capacitor, a first diode and a first inductor. The dip switch is a two-way dip switch having a first end, a second end, a third end, a fourth end and two dial keys, one of which is used to achieve on-off between the first end and the second end, and the other dial key is used to achieve on-off between the third end and the fourth end. The second capacitor is an electrolytic capacitor. One end of the first capacitor, the fourth pin of the first integrated circuit, the negative electrode of the first diode, one end of the first resistor and the positive electrode of the second capacitor are connected, and the connection end is both the positive electrode of the constant current conversion circuit and the positive output end of the constant current conversion circuit. The negative electrode of the second capacitor, the other end of the first resistor and One end of the first inductor is connected, and its connection end is the negative output end of the constant current conversion circuit, the other end of the first inductor, the positive electrode of the first diode are connected to the 5th and 6th pins of the first integrated circuit, the 1st pin of the first integrated circuit is connected to one end of the second resistor, one end of the third resistor, one end of the fourth resistor, and one end of the fifth resistor are connected to the 7th pin of the first integrated circuit, the other end of the fourth resistor is connected to the first end of the dip switch, the other end of the fifth resistor is connected to the third end of the dip switch, the second end and the fourth end of the dip switch, the other end of the second resistor, the other end of the third resistor, the 3rd pin of the first integrated circuit and the other end of the first capacitor are connected, and their connection ends are the negative electrode of the constant current conversion circuit.

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