TWI477188B - LED tube - Google Patents

Description

LED tube

The present invention relates to the design of a lighting device, and more particularly to the design of an LED lamp.

In the case of existing daylight lamps, a ballast must be installed on the lamp holder, and the lamp tube is mounted on the lamp holder and electrically connected to the ballast to convert the external power source into high frequency and high voltage power by the ballast. , to start the fluorescent tube, and after the fluorescent tube is lit, continuously provide a steady current to the fluorescent tube, so that the fluorescent tube can provide illumination.

However, the life of fluorescent lamps is not long, especially in places where frequency of opening and closing is frequent, and the loss is very fast. Moreover, since the fluorescent tube system receives the alternating current signal, it may cause flicker when the light is emitted, causing the user's eyes to be uncomfortable.

Since the development of the Light Emitting Diode (LED), due to its own luminous characteristics, it has been applied to directional lighting from the beginning, for example, status indicators of machinery and equipment in factories, or traffic such as traffic lights. The use of the logo. However, LEDs have the advantages of high efficiency, low power consumption, long life, high reliability, fast response, and low failure rate. Together with the rise of environmental awareness, LED lamps are gradually changing from traditional directional lighting to Indoor lighting to replace existing daylight fixtures.

Although LEDs have all of the above advantages, the existing fluorescent lamps have a high penetration rate, and the LED lamps and fluorescent lamps are different in structure design and circuit. Therefore, if the LED lights are used to replace the existing days, In the case of light, it is necessary to remove the entire set of daylight lamps and replace them with LED lamps, which is time consuming and costly. However, if the LED lamp is directly mounted on an existing fluorescent lamp holder, the LED lamp will be burnt due to the difference in circuit and design structure.

Therefore, how to overcome the problem that the above-mentioned conventional LED lamp cannot be directly mounted on the existing fluorescent lamp holder has become a problem to be solved at present.

In view of the above-mentioned shortcomings of the prior art, the present invention discloses an LED lamp tube to solve the problem that the LED lamp tube cannot be directly mounted on the existing fluorescent lamp holder.

The LED lamp tube provided by the invention is applied to a lamp holder having a ballast, the LED lamp tube comprising a light emitting module, a first controller and a second controller. The illuminating module has a first end and an opposite second end. The first controller is disposed on the first end of the illuminating module, and the second controller is disposed on the second end of the illuminating module. The light emitting module is electrically connected to the ballast by the first controller or the second controller. The first controller or the second controller is configured to adjust a power signal parameter from the ballast and transmit the parameter to the lighting module, so that the lighting module receives the adjusted power signal to emit light.

As can be seen from the above, the LED tube provided by the present invention has a first controller and a second controller in the tube, so that the power signal from the ballast can be adjusted to be converted into the illumination in the LED tube. The power received by the module enables the lighting module to receive the adjusted power signal to emit light, thereby enabling the present invention to directly connect the LED tube without removing the existing fluorescent lamp holder or changing its structure. Installed on existing fluorescent lamps It is not only easy to replace, but also saves unnecessary expenses. Moreover, the present invention is not limited to the type of ballast, and may be either electronic or inductive.

The other embodiments of the present invention will be readily understood by those skilled in the art from this disclosure.

It is to be understood that the structure, the proportions, the size, and the like of the present invention are intended to be used in conjunction with the disclosure of the specification, and are not intended to limit the invention. The conditions are limited, so it is not technically meaningful. Any modification of the structure, change of the proportional relationship or adjustment of the size should remain in this book without affecting the effects and the objectives that can be achieved by the present invention. The technical content disclosed in the invention can be covered. In the meantime, the terms "a", "an", "the" and "the" are used in the description, and are not intended to limit the scope of the invention. Adjustments, where there is no material change, are considered to be within the scope of the invention.

Please refer to FIG. 1 , which is a schematic diagram of the connection between the LED tube and the ballast of the present invention. As shown in the figure, the LED tube 1 of the present invention is electrically connected to the ballast 2 of the fluorescent lamp holder (not shown) to receive the electric power output from the ballast 2 to emit light.

The LED tube 1 of the present invention comprises a lighting module 10, a first controller 11 and a second controller 12. The light emitting module 10 has a first end 101 and a relative The first controller 11 is disposed on the first end 101 of the first end 101 to adjust the power signal of the power from the ballast 2 to enable the light module 10 Receives the adjusted power signal and emits light. The second controller 12 is disposed on the second end 102 of the lighting module 10 for adjusting the power signal of the power from the ballast 2, so that the lighting module 10 receives the adjusted power signal and emits light.

The ballast 2 shown in Figure 1 is a ballast for a general fluorescent lamp holder for receiving AC power from the mains and outputting a high-power voltage to activate the fluorescent tube, and outputting a stable voltage to the fluorescent tube after the fluorescent tube is activated. , the fluorescent tube continuously receives the electric power from the ballast 2 to emit light, and since the two ends of the general fluorescent tube respectively have two pins, the ballast 2 has four contacts 20a, 20b, 20c, 20d to For the fluorescent tube to be electrically connected.

The first controller 11 has a first pin 111, a second pin 112, and a third pin 113. The first pin 111 of the first controller 11 is electrically connected to the first end 101 of the light emitting module 10 and The second controller 12, the second pin 112 and the third pin 113 are electrically connected to the contacts 20a, 20b of the ballast 2 to adjust the power signal output by the ballast 2, so that the lighting module 10 receives the adjusted signal. The power signal glows.

The second controller 12 has a fourth pin 121, a fifth pin 122, and a sixth pin 123. The fourth pin 121 of the second controller 12 is electrically connected to the second end 102 of the light emitting module 10 and The first controller 11, the fifth pin 122 and the sixth pin 123 are electrically connected to the contacts 20c, 20d of the ballast 2 to adjust the power signal output by the ballast 2, so that the lighting module 10 receives the adjusted signal. Power signal Light.

The illuminating module 10 has an illuminating body 103. The illuminating body 103 is formed by connecting a plurality of illuminating diodes (LEDs) in series, and the plurality of illuminating diodes are connected in series to match the ballast and the lamp holder. Moreover, the number of the light-emitting diodes connected in series by the illuminant 103 can be determined according to the voltage value. In other words, the number of LEDs connected in series can be determined by the voltage value of the illuminator 103. For example, if the first controller 11 or the second controller 12 adjusts the power signal, the power output is The DC power is 7 volts, and the rated power of each LED is 0.7 volts, and the number of LEDs connected in series by the illuminant 103 is 10. In addition, the number of the illuminants 103 in the LED tube 1 is not fixed, and more than one illuminator 103 may be disposed according to the brightness requirement of different lighting environments or the specifications of the daylight luminaire. When the number of illuminants 103 is larger, The brightness of the light-emitting module 10 is higher, and the respective light-emitting bodies 103 are connected to each other in parallel, as shown in FIG. 1 to avoid the failure of the light-emitting module 10 when any of the light-emitting bodies 103 is damaged. The situation of illuminating. The series connection of the light-emitting diodes and the parallel connection of the light-emitting bodies 103 are matched to the specifications of the daylight lamps. Although the two illuminators 103 are shown in parallel with each other in Fig. 1, the number of illuminants 103 is merely illustrative of the embodiments, and should not be construed as limiting the scope of the invention.

It should be noted that, although the LED tube 1 of the present invention has the first controller 11 and the second controller 12, the first controller 11 and the second controller 12 can adjust the power signal of the ballast 2, and The adjusted power signal is transmitted to the light emitting module 10, that is, the power output by the ballast 2 can be adjusted by one of the first controller 11 or the second controller 12. The signal can cause the illumination module 10 to receive the adjusted power signal to emit light. Therefore, even if one of the first controller 11 or the second controller 12 is damaged, the power signal can be adjusted by another one, wherein the power signal includes Voltage, current, and AC to DC.

Please refer to FIG. 2, which is a schematic diagram of the internal structure of the first controller. The first controller 11 includes a capacitor unit 114, a rectifying unit 115, and a current limiting unit 116. The rectifying unit 115 is electrically connected between the capacitor unit 114 and the current limiting unit 116. The rectifying unit 115 is connected in parallel with the capacitor unit 114 and is connected in series with the current limiting unit 16. The capacitor unit 114 can be an electrolytic capacitor, a ceramic capacitor, a semiconductor capacitor, a MOS capacitor or a tantalum capacitor, etc., and can be regarded as a short-circuit state when operating in a high-frequency alternating current, and can be regarded as an open circuit in a low-frequency alternating current, The high voltage and high frequency oscillation generated by the ballast 2 are filtered out.

The rectifying unit 115 can be a bridge rectifier or a semiconductor connected in parallel with the capacitor unit 114 for rectifying the AC voltage outputted by the ballast to a DC voltage.

The current limiting unit 116 is connected in series with the rectifying unit 115 for generating a DC current correspondingly according to the DC voltage outputted by the rectifying unit 115 to reduce the current value output by the first controller 11, wherein the current limiting unit 116 It can be a resistor, a photoresistor, a thermistor or a variable resistor.

Regarding the second controller 12 of the present invention, the second controller 12 further includes another set of capacitor units, rectifying units and current limiting units, and another set of capacitor units, rectifying units and limits of the second controller 12 of the present invention Structure, connection relationship and function principle of the flow unit and the capacitance unit of the first controller 11 114, the rectifying unit 115 and the current limiting unit 116 are the same, so no further description is made here.

Please refer to FIG. 3 , which is a schematic diagram of the connection of the LED tube of the present invention. As shown in the figure, the LED tube 1 of the present invention is not connected to the LED tube and the ballast 2 only one to one, or a plurality of LED tubes 1 may be connected to the ballast 2, wherein the plurality of LED lamps The tubes 1 can be connected in series, or can be connected in parallel, and then connected to the ballast 2, and the series or parallel connection between the plurality of LED tubes 1 and the LED tube 1 and the ballast 2 The connection method has been described above, so it will not be described here.

The above embodiments are intended to illustrate the principles of the invention and its effects, and are not intended to limit the invention. Any of the above-described embodiments may be modified by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of protection of the present invention should be as set forth in the appended claims.

1‧‧‧LED tube

10‧‧‧Lighting module

101‧‧‧ first end

102‧‧‧ second end

103‧‧‧Lights

11‧‧‧First controller

111‧‧‧First pin

112‧‧‧second pin

113‧‧‧ third pin

114‧‧‧Capacitor unit

115‧‧‧Rectifier unit

116‧‧‧Restriction unit

12‧‧‧Second controller

121‧‧‧fourth pin

122‧‧‧5th pin

123‧‧‧6th pin

2‧‧‧Stabilizer

20a, 20b, 20c, 20d‧‧‧ joints

1 is a schematic view showing the connection between an LED lamp and a ballast according to the present invention; FIG. 2 is a schematic view showing the internal structure of the first controller and the second controller; and FIG. 3 is a schematic view showing the connection of the LED lamp of the present invention.

1‧‧‧LED tube

10‧‧‧Lighting module

101‧‧‧ first end

102‧‧‧ second end

103‧‧‧Lights

11‧‧‧First controller

111‧‧‧First pin

112‧‧‧second pin

113‧‧‧ third pin

114‧‧‧Capacitor unit

115‧‧‧Rectifier unit

116‧‧‧Restriction unit

12‧‧‧Second controller

121‧‧‧fourth pin

122‧‧‧5th pin

123‧‧‧6th pin

2‧‧‧Stabilizer

20a, 20b, 20c, 20d‧‧‧ joints

Claims (8)

An LED lamp tube is applied to a lamp holder having a ballast, the LED lamp tube comprising: a light-emitting module having a first end and an opposite second end; the first controller is disposed on the first of the light-emitting modules a first capacitor unit, a first rectifying unit, and a first current limiting unit, wherein the first capacitor unit is connected in parallel with the ballast, the first rectifying unit is connected in parallel with the first capacitor unit, the first The current limiting unit is connected in series with the first rectifying unit and generates a direct current according to the DC voltage outputted by the first rectifying unit; and the second controller is disposed on the second end of the lighting module and includes a second capacitor a unit, a second rectifying unit, and a second current limiting unit, wherein the second capacitor unit is connected in parallel with the ballast, the second rectifying unit is connected in parallel with the second capacitor unit, and the second current limiting unit is connected in series with the second The rectifying unit generates a DC current corresponding to the DC voltage outputted by the second rectifying unit, wherein the first controller or the second controller is configured to adjust a power signal from the ballast to enable the illuminating mode After adjusting the power of the received signal to emit light. The LED lamp of claim 1, wherein the first rectifying unit is connected between the first capacitor unit and the first current limiting unit. The LED tube of claim 1, wherein the first controller has a first pin, a second pin, and a third pin, the first A pin is electrically connected to the first end of the light emitting module, and the second pin and the third pin are electrically connected to the ballast. The LED lamp of claim 1, wherein the first rectifying unit is one of a bridge rectifier or a semiconductor. The LED lamp of claim 1, wherein the second rectifying unit is connected between the second capacitor unit and the second current limiting unit. The LED lamp of claim 1, wherein the second controller has a fourth pin, a fifth pin and a sixth pin, wherein the fourth pin is electrically connected to the light emitting module The second end of the second pin is electrically connected to the ballast. The LED lamp of claim 1, wherein the illuminating module has an illuminant, and the illuminating system is composed of a plurality of illuminating diodes connected in series with each other. The LED lamp of claim 7, wherein the plurality of light-emitting diodes are connected in series to each other to match the ballast and the lamp holder.