KR101438730B1 - Tube type led lamp - Google Patents

Abstract

The present invention provides a tube-type LED lamp. The tube-type LED lamp includes: an LED module which includes a substrate and a plurality of LED devices connected in series on the substrate, wherein the LED arrays of the LED devices connected in series are connected in parallel in the longitudinal direction; a heat radiation unit which is in contact with the substrate of the LED module and radiates the heat generated by the LED module; a pipe-shaped light penetrating cover to which the heat radiation unit with the LED module is inserted and of which both ends are open; a terminal cap which includes a terminal pin inserted to the terminal insertion groove of a fluorescent light and is inserted and combined to the both ends of the light penetrating cover to cover the both ends; a power supply connection unit which is connected to the terminal pin and receives power; and a bridge circuit unit which is connected between the power supply connection unit and the LED module, switches the current (+,-) or (-,+) applied from the terminal pin, and applies power to the LED module. At each of both ends of the substrate, a connection terminal for the bridge circuit unit and a connection terminal for the power supply connection unit are formed. The terminal of a wire connecting the LED arrays in parallel and the connection terminal for the bridge circuit unit are not electrically connected but become electrically connected when the bridge circuit unit is combined. The connection terminal for the bridge circuit unit and the connection terminal for the power supply connection unit are not electrically connected but become electrically connected when the power supply connection unit is combined.

Description

Intuitive LED lamp {TUBE TYPE LED LAMP}

The present invention relates to an intuitive LED lamp replacing a fluorescent lamp.

Conventionally, a fluorescent lamp is mainly used as an indoor lighting device. A fluorescent lamp is a hot cathode discharge lamp that encloses a sealed glass tube with a small amount of mercury vapor and argon gas to seal it, and then applies a voltage through both ends to generate light by discharging the gas. Fluorescent lamps generally have high efficiency, high color rendering, long life, and low brightness.

On the other hand, fluorescent lamps have a disadvantage that barium (Ba) and calcium (Ca), which are electron emitting materials coated on the filaments, protrude from the filament and blacken the lamp to lower the illuminance because the positive ions have high energy and collide with the cathode surface during discharging. In case of using for a long time, consumption of cathode material causes loss of electron emitting ability and shortens life span. Therefore, a lighting device using a fluorescent lamp requires a long maintenance period because of a short replacement period of the fluorescent lamp. In addition, the fluorescent lamp has a problem that the inside of the glass tube is completely sealed, so that it is difficult to manufacture the fluorescent lamp, and a lot of power consumption is required due to repetitive and frequent switching operation.

In recent years, various lighting devices using semi-permanent lifetime LEDs with very low power consumption have been introduced. LED is a kind of diode that emits light when current flows, and it is made by bonding p-type semiconductor and n-type semiconductor to each other. When a forward voltage is applied to the electrode of the LED, holes, which are p-type multi-carriers, are diffused into the n-region and electrons, which are n-type multi-carriers, are diffused into the p- region. When electrons and holes recombine with each other near the junctions, Light having a wavelength corresponding to the wavelength of the light is generated. At this time, the wavelength of the emitted light differs depending on the material used, and generally, the direct emission type semiconductor has excellent luminous efficiency.

LEDs are more stable and reliable than other thermal conversion light emitting devices, have low power consumption, and have a long life span. Currently, the LED technology is developing rapidly, and LEDs of various colors, high efficiency and high brightness are being released. One LED serves as a point light source, but when a plurality of LEDs are gathered, a light source or a planar light source can be formed and used as an illumination device.

LED lighting lamps are more energy efficient because of their low power consumption. In addition, it has an effect of reducing environmental pollution by replacing existing electric lamps containing various harmful substances and having a short life span.

In recent years, a so-called straight tube type LED lamp which is manufactured by arranging a plurality of LEDs on a substrate and manufactured in the same manner as a conventional fluorescent lamp is being released. Such an intuitive LED lighting lamp has a structure in which a plurality of LEDs are mounted on a substrate and an LED module is disposed in a transparent tube or a translucent tube, and terminals for power supply are provided at both ends thereof.

Since such a LED lighting lamp uses a DC power source, it requires a stabilizer for rectifying a commercial power source of 220 V or 110 V to DC and converting the rectified DC power to a size required for lighting. The ballast can be installed inside an LED lighting fixture, or it can be installed in an LED lighting fixture that is combined with an LED lighting fixture. The LED lighting device using LED lighting is built-in which uses only LED lighting lamp with built-in stabilizer, the external stabilizer is installed in LED lighting fixture, it uses only LED lighting, and LED lighting with built-in ballast and LED lighting without ballast It can be divided into usable compatible types.

 In the case of LED lamps, in case of replacing incandescent lamps, E26 base compatible type lamps can be replaced as they are. However, when replacing fluorescent lamps, which are mainstream of general lighting, lamps must be replaced or dedicated ballasts must be installed separately. Therefore, there is a difficulty in changing the wiring inside the luminaire, so that a fluorescent lamp lamp is not widely available.

Conventional fluorescent lamp type LED lighting lamps have a structure in which a circuit module in which a plurality of LEDs are mounted is built in a housing of the same type as a conventional fluorescent lamp. A power terminal for supplying power to the circuit module is connected to a lamp Light is made to be irradiated. In order to avoid the inconvenience of newly designing and using a power source device connected to the conventional luminaire lamp, the LED lighting lamp may be formed in the form of a housing and a power source terminal in the same shape as a fluorescent lamp so that a conventional fluorescent lamp can be utilized Is being developed.

Korean Patent No. 10-0923982 (published on October 21, 2009) Korean Patent Publication No. 10-2010-0049981 (published on May 13, 2010) Korean Utility Model Application No. 20-2010-0011123 (Published on November 16, 2010)

An object of the present invention is to provide an intuitive LED lamp which can be installed directly to a fluorescent lamp lighting device and which can stably switch the current of + or - to apply power to the LED module.

According to an aspect of the present invention, there is provided an LED lamp including a substrate, a plurality of LED elements connected in series to the substrate, An LED module in which LED arrays of the LED elements connected in parallel are connected in a longitudinal direction; A heat dissipation unit contacting the substrate of the LED module to dissipate heat generated in the LED module; A tubular light-transmitting cover having a heat-radiating portion fitted with the LED module and having both open ends; A terminal cap including a terminal pin inserted into a terminal insertion groove of the fluorescent lamp socket, the terminal cap being fitted to both ends of the transparent cover to surround the both ends; A power supply connection unit connected to the terminal pins to receive power; And a bridge circuit part connected between the power supply connection part and the LED module for switching a current (+, -) or (-, +) applied from the terminal pin and applying power to the LED module, Wherein the bridge circuit portion connection terminal and the power supply connection portion connection terminal are formed at both ends of the substrate, the terminal of the LED parallel connection wiring connecting the LED arrays in parallel and the bridge circuit portion connection terminal are not electrically connected, And the bridge circuit portion connection terminal and the power supply connection portion connection terminal are not electrically connected to each other and are electrically connected when the power supply connection portion is coupled.

According to an aspect of the present invention, the power supply connection portion and the bridge circuit portion select one side of both ends of the substrate in the + and - directions of the LED array coupled to the substrate, And the bridge circuit unit connection terminal, respectively.

According to the LED lamp of the present invention, the direction of the current applied to the LED module can be stably rectified and applied with a simple structure, and LEDs whose polarities are not the same due to different manufacturers can be assembled .

1 is an exploded perspective view of an intaglio type LED lamp according to an embodiment of the present invention,
2 is a view illustrating a PCB pattern of an LED lamp according to an embodiment of the present invention,
3 is a partial photograph of one side of a substrate of an LED module of an intaglio lamp according to an embodiment of the present invention,
Fig. 4 is a partial photograph of the other side of the substrate of the LED module of Fig. 3,
5 is a photograph showing one side of a heat dissipation unit in which the LED module using the substrate of FIG. 3 is fitted,
Fig. 6 is a photograph showing the other side of Fig. 5,
FIG. 7 is a circuit diagram of an LED module of an intuitive LED lamp according to an embodiment of the present invention,
8 is a circuit diagram of an LED module of an intuitive LED lamp according to another embodiment of the present invention, and Fig.
9 is a photograph of an LED module and a terminal cap of an intaglio lamp according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of LED lighting lamps according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view showing an assembled state of an intuitive LED lamp according to the present invention, FIG. 2 is a view showing a substrate PCB pattern of an intaglio LED lamp, FIGS. 3 and 4 are cross- Figs. 5 and 6 are respectively a side view and a side view of the PCB substrate of Fig. 3 and Fig. 4, in which a rectifying circuit, a power supply terminal, and LEDs are installed, Figs. 7 and 8 are circuit diagrams of the LED module, and Fig. 9 is a photograph of the LED module and the terminal cap of the straight tube lamp.

Referring to FIG. 1, the LED lamp of the present invention includes a pipe-shaped straight tube-type translucent cover 110, a heat dissipation unit 120 inserted into the translucency cover 110, a heat dissipation unit 120, The LED module 130 inserted in the cover 110, the terminal cap 140 coupled to both ends of the transparent cover 110, and the positive + current of the current applied to the LED module 130 are rectified and applied to the LED module 130 And a bridge unit 150 which is connected to the bridge unit.

As shown in FIG. 1, the light-transmitting cover 110 has a pipe shape similar to a general fluorescent lamp, and the heat-radiating portion 120 is fitted into the inside thereof. The light-transmitting cover 110 diffuses the light from the internal LED to the outside. The light-transmitting cover 110 may be formed of a light diffusion polycarbonate (PC) material. The polycarbonate is characterized by being easily processed into a specific group of thermoplastic plastic polymers, injection molded, and thermoformed.

1, the heat dissipating unit 120 includes a heat dissipating plate 121 for contacting the back surface of the substrate 131 and absorbing heat emitted from the LED 132, a heat sink 121 for inserting and fixing the substrate 131, A substrate joining jaw 122 formed in a longitudinal direction in a shape of "┏" and "┓" at both longitudinal ends of the one surface of the heat sink 121, a plurality of protrusions formed at the back surface of the heat sink 121, And a screw coupling hole 124 through which the screw 160 is inserted and coupled to the terminal cap 140 so as to securely fasten the radiating fin 123 and the terminal cap 140 to radiate. The heat dissipating unit 120 is formed by extrusion-molding a material having excellent heat radiation effect. The heat dissipation unit 120 may be made of a metal such as aluminum or aluminum alloy, which is preferably excellent in thermal conductivity. A thermally conductive polymer composite material may also be used. The length of the heat dissipation unit 120 is preferably smaller than the length of the transparent cover 110.

The terminal cap 140 is coupled to both ends of the transparent cover 110 to protect the LED module 130 and the like inside the transparent cover 110. The terminal cap 140 is inserted into the terminal insertion grooves of the pipe- And an insertion portion 143 formed adjacent to an inner wall of the body 141 in a tubular shape having a diameter smaller than the inner diameter of the transparent cover 110. [ The gap between the inserting portion 143 and the inner wall of the body 141 is determined in accordance with the thickness of the material of the transparent cover 110 so that when the terminal cap 140 is coupled to both ends of the transparent cover 110, And the end of the transparent cover 110 is fitted in a space between the inner wall of the body 141 and the inner wall of the body 141. It is preferable that the heat dissipating unit 120 in the light transmitting cover 110 is as short as twice the length of the inserting unit 143 so that the inserting unit 143 can be inserted at both ends of the light transmitting cover 110. [

When a rubber packing (not shown in the drawing) is inserted into a space between the insertion portion 143 and the inner wall of the body 141, moisture is penetrated into the transparent cover 110 and the LED module 130 ) Can be prevented from being damaged. A screw hole 144 is formed in the terminal cap 140 at a position corresponding to the screw coupling hole 124 of the heat dissipating unit 120 when the heat dissipating unit 120 is inserted into the light transmitting cover 110, The terminal cap 140 and the heat dissipating unit 120 can be tightly coupled with each other using the screw.

The LED module 130 includes a substrate 131 and one or more LED elements 132 coupled to the substrate 131. On the substrate 131, a PCB wiring pattern layer for applying a current to the LED element 132 is formed.

3 is a photograph showing one side end of a substrate on which a PCB wiring pattern is formed, FIG. 4 is a photograph showing the other end, and FIGS. 5 and 6 are photographs showing an example of a PCB wiring pattern And a power supply connection portion 180. The LED chip 132 includes a first substrate 131 and a second substrate 132. The first substrate 132 and the second substrate 150 are electrically connected to each other through the LEDs 132. [ Reference numeral 132 denotes a parallel connection wiring for connecting the LED arrays 132a connected in series to each other in parallel, and reference numerals 151 and 151 'denote connection wiring lines for connecting the LED arrays 132a and 132b in series. And 181 and 181 'are power supply connection connecting terminals to which the power supply connection portion 180 is provided.

Figs. 2 (a), 3, and 5 show one end of the substrate, and Figs. 2 (b), 4 and 6 show the other end of the substrate. The omitted portion consists of a series connection of the LED elements 132 and a parallel connection of the LED arrays 132a in which the wiring 132 'and the LED elements 132 are connected in series and the wiring 132' , The board of the present invention is provided with a bridge circuit connection terminal 151 and a power supply connection port connection terminal 181 at one end and a bridge circuit connection terminal 151 'and a power supply connection port connection terminal 181' Both ends of the parallel connection wiring 132 "and the bridge circuit connection terminals 151 and 151 'are not electrically connected to each other, and the bridge circuit connection terminals 151 and 151' and the power supply connection part full speed terminals 181 and 181 ' They are not electrically connected to each other.

When the LED element 132, the bridge circuit part 150 and the power supply connection part 180 are provided on the substrate 131 on which the wiring pattern layer is formed as described above, The bridge circuit portion 150 is provided on the left or right side bridge circuit connection terminal 151 or 151 'of the LED array 132 and the parallel connection wiring 132' 'of the LED array 132a and the bridge circuit connection terminal 151 or 151' The power supply connection portion 180 is provided to the power supply connection portion connection terminal 181 or 181 'connected to the bridge circuit portion 150. Both terminals of the parallel connection wiring 132 "are connected to the bridge circuit connection terminals 151 or 151 And the bridge circuit connection terminal 151 or 151 'is electrically connected to the power supply connection portion 180 by the power supply connection portion 180 so that the bridge circuit portion 150 is electrically connected to the power supply connection portion 180, As shown in Fig. 9, in the terminal insertion groove of the fluorescent lamp socket The terminal pin 142 to be inserted and the wiring are connected to receive a current from the outside.

The LED element 132 is connected to the LED element serial connection terminal 132 'of FIGS. 3 and 4. As shown in the figure, the LED element 132 has three terminals and is formed differently from (+, +, -) or (-, -, + The polarity of +, - can be arranged differently according to the LED element as shown in Figs. The LED module according to the present invention may be configured such that LED elements having different polarities are arranged on the substrate and then connected to the bridge circuit connection terminals 151 and 151 'and the power supply connection terminal connection terminals 181 and 181' Since the bridge circuit unit 150 and the power supply connection unit 180 can be provided on one side, the LED devices having different polarities due to different manufacturers can be manufactured in the same line without changing the PCB. In other words, the power supply connection unit 180 and the bridge circuit unit 150 select one side of both ends of the substrate according to the + and - directions of the LED array 132a coupled to the substrate, (181 ') and the bridge circuit unit connection terminal (151'), respectively. Therefore, it is possible to solve the problem of forming the PCB boards differently according to the LED elements.

The bridge circuit unit 150 is connected between the power supply connection unit 180 and the array of the LED arrays 132a. The bridge circuit unit 150 is connected between the power supply connection terminal 180 and the LED module 130 and switches the current direction (+, -) or (-, +) applied from the terminal pin 142, 130). That is, when the LED + terminal of the power supply connection unit 180 is applied and the + terminal is applied to the LED-terminal, the bridge circuit unit 150 is connected to the LED array (not shown) along the second diode D2 of the four diodes of the bridge circuit unit 150 (Anode side) of the array of LED arrays 132a along the third one of the four diodes of the four diodes of the bridge circuit part 150 to the + side of the arrangement of the LED arrays 132a + Power is applied to drive the LED module. In the present invention, even if the + and - currents are inputted to the terminal pins of the fluorescent lamp socket to be connected, they can be switched through the bridge circuit unit 150 to apply power to the LED module 130.

The assembly of the LED module having the above-described structure is as follows. The LED elements 132 are arranged on the substrate 131 on both ends of which the bridge circuit portion connection terminals 151 and 151 'and the current connection portion connection terminals 181 and 181' are respectively formed and the connection direction of the LED array 132a is 7, the bridge circuit unit 150 and the power supply connection unit 180 are connected to the left side and the bridge circuit unit 150 and the power supply connection unit 180 are connected to the right side as shown in FIG. FIG. 5 shows a state in which the bridge circuit unit 150 and the power supply connection unit 180 are coupled to one end, and FIG. 6 shows a state in which the bridge circuit unit 150 and the power supply connection unit 180 are not coupled to the terminal at the other end. As shown in FIG. 9, the power supply connection portion 180 at one side of the substrate shown in FIG. 5 is connected to the terminal pin 142 by electric wires to receive power. Since the other end of the substrate shown in FIG. 6 is not connected to the bridge circuit part 150 and the current applying connection part 180 to the bridge circuit part connection terminal 151 'and the current application part connection terminal 181' And is not electrically connected to the terminal pin 142 of the connector 140.

The assembly of the LED lamp having the above-described structure is as follows. First, the LED module 130 is inserted between the substrate holding protrusions 122 of the heat dissipating unit 120, and the heat dissipating unit 120 having the LED module 130 inserted therein is inserted into the light transmitting cover 110. A power supply connection terminal 180 and a terminal pin 142 are connected to the LED module 130 and the terminal cap 140 is connected to both ends of the light transmission cover 110. The combination of the terminal cap 140 and the transparent cover 110 is as described above. The screw holes of the heat dissipating unit 120 and the terminal cap 140 are fitted together and the screws 160 are inserted through the screw holes and the screw holes 124. Accordingly, both the terminal cap 140, the heat dissipating unit 120, and the light-transmitting cover 110 can be tightly coupled.

110: light-transmitting cover 120: heat-
130: LED module 132: LED device
132a: LED array 132 ': serial connection wiring
132 ": Parallel connection wiring 140: Terminal cap
141: Body 142: Terminal pin
143: insertion portion 144: screw insertion hole
150: bridge circuit unit 180: power supply connection unit
151 ': Bridge circuit part connection terminal 180': Power supply connection part connection terminal

Claims (7)

An intuitive LED lamp provided between fluorescent lamp sockets for emitting light,
An LED module comprising: a substrate; a plurality of LED elements connected in series to the substrate, the LED arrays of the LED elements connected in series and arranged in a longitudinal direction;
A heat dissipation unit contacting the substrate of the LED module to dissipate heat generated in the LED module;
A tubular light-transmitting cover having a heat-radiating portion fitted with the LED module and having both open ends;
A pair of terminal caps including terminal fins inserted into terminal insertion grooves of the fluorescent lamp socket and fitted to both ends of the transparent cover to surround the both ends, respectively;
A power supply connection part connected to the terminal pin of one of the pair of terminal caps to receive power; And
And a bridge circuit part connected between the power supply connection part and the LED module for switching a current (+, -) or (-, +) applied from the terminal pin and applying power to the LED module,
Wherein the bridge circuit portion connection terminal and the power supply connection portion connection terminal are formed at both ends of the substrate, and the terminals of the LED parallel connection wirings connecting the LED arrays in parallel are not electrically connected to the bridge circuit portion connection terminals, The bridge circuit portion connection terminal and the power supply connection portion connection terminal are not electrically connected and are electrically connected when the power supply connection portion is coupled,
The power supply connection portion and the bridge circuit portion select one side of both ends of the substrate along the +, - direction of the LED array coupled to the substrate, and connect the power supply connection portion connection terminal and the bridge circuit portion connection terminal An intuitive LED lamp connected. The method according to claim 1,
Wherein the terminal cap includes a tubular body having an inner diameter larger than the outer diameter of the transparent cover and one end opened and the other end closed and an insertion portion formed adjacent to the inner wall of the body in a tubular shape having a diameter smaller than an inner diameter of the transparent cover Intuitive LED lamp. 3. The method of claim 2,
And the inserting portion is inserted inward from both ends of the light-transmitting cover. 3. The method of claim 2,
Wherein the terminal cap has a rubber ring interposed between the inner wall of the body and the insertion portion, The method according to claim 1,
Wherein the transparent cover is transparent or semitransparent polycarbonate. 3. The method of claim 2,
Wherein the heat releasing portion is shorter than the height of the insertion portion by at least twice the length of the light-transmitting cover. delete

Images