TWM451774U - Lamp tube module - Google Patents

Description

Lamp module

The present invention relates to a lamp module, and more particularly to a lamp module including a power conversion device, which is interposed between a plurality of DC light-emitting elements and a ballast.

Due to the issue of energy and global climate change, the development and promotion of green energy and other alternative energy sources, the application of high-efficiency light sources has received much attention. The replacement of existing fluorescent tubes with light-emitting diodes (LEDs) has also become an important discussion option and application. Since the fluorescent tube power supply is an electronic ballast with a high power factor or a conventional silicon steel ballast that generally requires a starter, the power supply provided by the ballast cannot be Directly used in DC illuminators, for example, light-emitting diodes. Therefore, it is necessary to have a power conversion device that can properly convert the power supplied from the ballast to provide a DC light source such as a light emitting diode.

However, since the ballast outputs alternating current (AC) current, the stabilizer is used to overcome the negative resistance characteristic of the gas discharge type electric light source. Therefore, the ballast cannot be directly connected to the direct current (DC) light emitting diode. Polar body. In other words, it is necessary to use a device to correctly and efficiently supply the AC type electric energy output from the ballast to the light emitting diode of the DC power source.

At present, it is often necessary to remove the ballast and add an AC to DC power module that converts AC (AC) mains to DC power. This method is limited in terms of service life, efficiency and cost. Includes switching components (eg MOSFET), output filter capacitors (eg: electricity) Solving the life of the electrolyte of the capacitor), and the quality and cost of the transformer. Therefore, how to develop a device to be applied to existing lighting devices using ballasts, converting electrical energy into currents that can be directly used for DC light source components, to smoothly integrate with various existing brand types of conventional or electronic stability on the market. It is an important issue for the normal use of the device and the power supply provided by the ballasts of various brands can work normally without causing malfunction.

The purpose of the present invention is to provide a lamp module, which comprises a power conversion device, which is a power conversion device between a DC light-emitting element and a ballast, and is therefore suitable for the existing ballast. The lighting device converts electrical energy into electrical energy that can be directly used for the DC light source component to smoothly match the existing brand-type ballasts on the market.

According to the above and other objects, the present invention provides a lamp module, which includes a plurality of lamps, each of which includes a DC light-emitting element, and the lamps are electrically connected to a power source. And a conversion device disposed between the DC light emitting element and a ballast. The power conversion device includes: a first fluorescent lamp analog module, a second fluorescent lamp analog module, and a rectifying module; wherein the first fluorescent lamp analog module has two current input terminals. The second fluorescent lamp analog module is also electrically connected to the second group of alternating current outputs of the ballast. The two input ends of the rectifier module are electrically connected to the two ends of the first fluorescent lamp simulation module (ie, the first group of AC output terminals of the ballast) and the two ends of the second fluorescent lamp simulation module (ie, One of the output terminals of the second group of alternating current outputs) outputs a rectified direct current to provide the power required for the direct current lighting element.

The above objects, features and advantages of the present invention will become more apparent from the following description.

10‧‧‧Light tube module

11‧‧‧Light tube

101‧‧‧ ballast

1011‧‧‧The first set of AC output

1012‧‧‧Second group of AC output

102‧‧‧Power conversion device

103‧‧‧DC light-emitting elements

110‧‧‧AC power supply

201‧‧‧First fluorescent light simulation module

202‧‧‧Second Fluorescent Light Emulation Module

203‧‧‧Rectifier Module

301‧‧‧Resistors

302‧‧‧Inductors

FIG. 1 shows an embodiment of the lamp unit of the present invention.

FIG. 2 is a schematic diagram showing the use of a power conversion device between a DC light-emitting element and a ballast.

FIG. 3 is a schematic diagram showing the architecture of an embodiment of a power conversion device between a DC light-emitting element and a ballast.

FIG. 4 is a schematic diagram showing an embodiment of an equivalent circuit of the first fluorescent lamp analog module and the second fluorescent lamp analog module.

FIG. 5 is a schematic diagram showing an embodiment of a rectifying module of the present invention.

Referring to FIG. 1 and FIG. 2, FIG. 1 shows an embodiment of a lamp module of the present invention, and FIG. 2 shows a structure of a power conversion device between a DC light-emitting element and a ballast. schematic diagram. Referring first to FIG. 1, the lamp module 10 includes a plurality of lamps 11 in which a DC light-emitting element 103 as shown in FIG. 2 is disposed. Moreover, the size and size of these lamps 11 are, for example, in accordance with the specifications of existing fluorescent tubes on the market. As shown in FIG. 2, the power conversion device 102 is placed between a ballast 101 and a plurality of DC light-emitting elements 103. In FIG. 2, each of the direct current light-emitting elements 103 corresponds to one of the lamps 11, that is, each of the direct-current light-emitting elements 103 is disposed in one of the tubes 11. In the present embodiment, the number of the lamps 11 is three, but those skilled in the art may increase the number of the lamps 11 as required, for example, to four.

The ballast 101 is connected to an AC power source 110 and has a first group of alternating current output terminals 1011 and a second group of alternating current power output terminals 1012 for outputting an alternating current power source. It is worth noting that since the output AC power supply has two output terminals (ie, two connection lines) for each group of alternating current outputs, respectively, to provide electrical connection with a load, wherein the load is in the present embodiment. In the example, it is a light source. The power conversion device 102 is electrically connected to the first group of alternating current output terminals 1011 of the ballast 101, respectively. The second set of alternating current outputs 1012 are converted to a direct current power output (as indicated by L+ and L-) to drive the electrically coupled direct current illuminating elements 103. In the present embodiment, the DC light-emitting element 103 is an illuminant composed of at least one light-emitting diode (LED), for example, an LED light strip, and the LED light strip is provided with a plurality of LED chips on a substrate.

FIG. 3 is a schematic diagram showing the architecture of an embodiment of a power conversion device between a DC light-emitting element and a ballast. As shown in FIG. 3, the power conversion device between the DC light-emitting device and the ballast comprises: a first fluorescent lamp simulation module 201, a second fluorescent lamp simulation module 202, and a a rectifier module 203; wherein the first fluorescent lamp analog module 201 has two current input terminals electrically connected to the first group of alternating current output terminals 1011 of the ballast 101; the second fluorescent lamp The analog module 202 also has two current input terminals electrically connected to the second set of alternating current output terminals 1012 of the ballast 101. The two input ends of the rectifier module 203 are electrically connected to the ballast 101. One of the first set of alternating current output terminals 1011 and the second alternating current output terminal 1012 outputs a rectified direct current to provide the power required by the direct current light emitting element 103. It is to be noted that, in the illustration, the two input ends of the rectifier module 203 are electrically connected to the first group of the alternating current output terminal 1011 and the second alternating current output terminal 1012 of the ballast 101 respectively. The output end is not limited thereto; the rectifying module 203 is electrically connected to each of the first set of alternating current output terminals 1011 and the second alternating current output end 1012.

It is worth noting that since the ballast 101 is designed for the negative resistance characteristic of a conventional gas discharge type electric light source (for example, a fluorescent lamp), the first group of alternating current output ends and the second alternating current output end are outputted by the alternating current output terminal. The power source is not the power source required for the DC light-emitting element 103. Therefore, the first fluorescent lamp simulation module 201 and the second fluorescent lamp simulation module 202 simulate the negative resistance characteristic of a gas discharge type electric light source (for example, a fluorescent lamp) in an equivalent circuit manner. The electrical characteristics of the gas discharge type electric light source are further input by the rectifier module 203 to the first group of alternating current output terminals and the second alternating current output terminal The AC power source is converted into a rectified DC power source to output the power required to supply the DC light-emitting element 103. In other words, from the viewpoint of the ballast 101, the load formed by the power conversion device 102 and the DC light-emitting element 103 between the DC light-emitting element and the ballast of the present invention is the same as the conventional gas discharge type electric light source. The electrical characteristics can therefore directly replace the conventional gas discharge type electric light source for the existing lighting device using the ballast, so as to smoothly cooperate with the existing various types of ballasts on the market.

In addition, please refer to FIG. 1 and FIG. 2 at the same time. According to the technical features disclosed in FIG. 2 and FIG. 3, since the size and size of the lamp tube 11 in the lamp tube module 10 are in accordance with the existing fluorescent tube on the market. In size, the lamp module 10 can also be installed in an existing lamp holder without the need to retrofit or redesign the existing lamp holder. In addition, even if three lamp tubes 11 are installed in the lamp tube module 10, only one set of the ballast 101 and the power conversion device 102 are needed, and there is no need to install a plurality of groups instead of the conventional fluorescent lamps. Like a tube, each fluorescent tube requires a ballast.

In addition, those skilled in the art should understand that the technology disclosed in the present invention can also be applied to other lamp modules, such as a bulb module composed of a plurality of bulbs, and is not limited to only the bulb module.

FIG. 4 is a schematic diagram showing an embodiment of an equivalent circuit of the first fluorescent lamp analog module and the second fluorescent lamp analog module. As shown in FIG. 4, the first fluorescent lamp analog module and the second fluorescent lamp analog module may be respectively formed by a resistor 301, an inductor 302, or a resistor 301 connected in series with an inductor 302. It is characterized by having a low resistance value. FIG. 4 shows a circuit in which a resistor 301 is connected in series with an inductor 302 to simulate the electrical characteristics of the fluorescent lamp. The fluorescent lamp analog module simulates the filament electrode piece in the fluorescent tube. Therefore, the first fluorescent lamp analog module and the second fluorescent lamp analog module can have the same electrical characteristic specifications.

The principle of the first fluorescent lamp analog module and the second fluorescent lamp analog module of the present invention is as follows. This creation uses an electrical model composed of a resistor 301 and an inductor 302 (ie, a first fluorescent lamp). The analog module 201 and the second fluorescent lamp simulation module 202) lead the output power of the ballast, and the original fluorescent lamp internally uses the output power to illuminate the lamp. In the case of an electronic ballast, the power supply is an AC high frequency (generally about 40K Hz, or up to 50K Hz or higher) high voltage (generally about 300V, or up to 600V or more), and it must be imported immediately. end. Therefore, when the LED load in the present embodiment replaces the internal load of the original fluorescent lamp, the output end of the ballast (four lines) is input to the two ends of the fluorescent lamp (four lines) by using the foregoing electrical model, and both ends are utilized. Each lead line is to introduce the four-wire architecture into a two-wire architecture, and the two-wire architecture (the two lines are AC high-frequency high-voltage power supply at this time) is introduced into the bridge rectifier to DC power supply type (such as L+, L- ) Supply LED load. Among them, the electrical model of resistance and inductance is low resistance, and its resistance is about 1 ohm or less. Due to the low resistance of this resistor and inductive electrical model, this creation can also be applied to ballasts of other types of architecture. For example, an electronic ballast with only three-wire output, when using an electronic ballast with only three-wire output, will usually Both ends of the fluorescent tube are short-circuited.

FIG. 5 is a schematic diagram showing an embodiment of a rectifying module of the present invention. As shown in FIG. 5, the rectification module of the present invention can be realized by a full-wave bridge rectifier circuit which is bridged by four rectifying diodes. The two input ends of the full-wave bridge rectifier circuit are electrically connected to any one of the first fluorescent lamp analog module and the second fluorescent lamp analog module. It is worth noting that, at this time, the AC power output from either end of the first fluorescent lamp analog module and the second fluorescent lamp analog module is a high-frequency high-voltage AC power source. Since the two ends of the first fluorescent lamp analog module and the second fluorescent lamp analog module are respectively connected to the first group of alternating current output ends and the second alternating current output end of the ballast 101, the full wave bridge rectifier The two input ends of the circuit are also equivalent to being connected to each end of each of the first set of alternating current output terminals and the second alternating current output end of the ballast 101 to convert the alternating current from the ballast 101 into a direct current to provide direct current illumination. Element 103 is used.

Compared with the prior art, the present invention has the following advantages: 1. It can directly replace the conventional fluorescent tube and directly applied to the lighting device of the existing ballast. To avoid the cost of re-establishing the lighting equipment; 2. Simple structure, low manufacturing cost, and market competitiveness; 3. As shown in FIG. 1 and FIG. 2, even if a plurality of lamps 11 are used in the lamp module 10, It is also possible to use only one ballast 101 and one power conversion device 102 without using multiple sets of ballast 101 and power conversion device 102.

The present invention is described above by way of example, but it is not intended to limit the scope of patent rights claimed herein. The scope of patent protection is subject to the scope of the patent application and its equivalent fields. Any changes or modifications made by those skilled in the art without departing from the spirit or scope of this patent are subject to the equivalent changes or designs made in the spirit of the present disclosure and should be included in the scope of the patent application below. Inside.

201‧‧‧First fluorescent light simulation module

202‧‧‧Second Fluorescent Light Emulation Module

203‧‧‧Rectifier Module

1011‧‧‧The first set of AC output

1012‧‧‧Second group of AC output

Claims (12)

A lamp tube module comprising a plurality of lamps, each of the lamps comprising a direct current illuminating element, wherein the lamps are electrically connected to a power conversion device, and the power conversion device is disposed at The power conversion device includes: a first fluorescent lamp analog module having two current input terminals electrically connected to the first group of alternating currents of the ballast An output terminal; a second fluorescent lamp analog module having two current input terminals electrically connected to one of the second set of alternating current output terminals of the ballast; and a rectifier module having two input ends The two input ends are electrically connected to one end of the first fluorescent lamp analog module and one of the two ends of the second fluorescent lamp analog module, and output a rectified DC current to provide The power supply required for the DC light-emitting component; wherein the power conversion device is electrically connected to and provides power to other lamps in the lamp module to cause the DC light-emitting elements in the other lamps to emit light. The lamp module of claim 1, wherein the DC light-emitting element is an LED light source. The lamp module of claim 1 or 2, wherein the first fluorescent lamp analog module and the second fluorescent lamp analog module are negative for a gas discharge type electric light source. The resistance characteristic is realized by an analog equivalent circuit simulating the electrical characteristics of the gas discharge type electric light source. The lamp module of claim 3, wherein the first fluorescent lamp analog module and the second fluorescent lamp analog module simulate a filament electrode chip. The analog equivalent circuit is a resistor, An inductor or a resistor is connected in series with an inductor and has low resistance characteristics. The lamp module of claim 3, wherein the analog equivalent circuit of the first fluorescent lamp analog module and the second fluorescent lamp analog module simulates a filament electrode in a fluorescent tube sheet, And the first fluorescent lamp analog module has the same electrical characteristic specifications as the second fluorescent lamp analog module. The lamp module of claim 3, wherein the analog equivalent circuit of the first fluorescent lamp analog module and the second fluorescent lamp analog module simulates a filament electrode in a fluorescent tube And the first fluorescent lamp analog module and the second fluorescent lamp analog module have different electrical characteristics. The lamp module of claim 3, wherein the power conversion device is connected in series with the load formed by the DC light-emitting element, and the ballast exhibits the same electrical characteristics as a fluorescent tube. The lamp tube module of claim 1 or 2, wherein the power conversion device first extracts the four-wire output end of the ballast into two wires, and then introduces the two wires into the rectifier module. Rectification to DC power. The lamp module of claim 8, wherein the two wires form an alternating high frequency high voltage power source. The lamp module of claim 1 or 2, wherein the rectifier module is a full-wave bridge rectifier circuit, and the full-wave bridge rectifier circuit is bridged by four rectifier diodes. The rectifier diode has electrical characteristics of low resistance on-resistance and low on-voltage. The lamp module of claim 2, wherein the LED light source is an LED light bar. The lamp tube module of claim 1 or 2, wherein the lamp tube in the lamp module is sized and sized to conform to the specifications of the existing fluorescent tube on the market.