KR20040081848A - LED lamp for signal light - Google Patents

Abstract

PURPOSE: A light emitting diode signal lamp and a light emitting diode lamp comprised in the same are provided to improve reliability of a product by minimizing the influence from thermal shock, thereby increasing visibility of a signal lamp. CONSTITUTION: The light emitting diode signal lamp includes a printed circuit board and a plurality of light emitting diode lamps(120) installed on the printed circuit board. An orientation maintaining member(200) is installed in front of the printed circuit board, and refracts a light emitted from the light emitting diode lamp. A back case(400) is installed in the back of the printed circuit board. A power supply(500) is installed in the back case and supplies power to the light emitting diode lamp. And a fixing member(600) fixes the orientation maintaining member and the front cover and the back case.

Description

Light emitting diode lamps and the light emitting diode lamps provided thereon {LED lamp for signal light}

The present invention relates to a light emitting diode lamp signal lamp, in particular to increase the visibility of the signal lamp, and to minimize the impact from thermal shock by maintaining a predetermined distance from the epoxy resin portion of the light emitting diode lamp to the printed circuit board, the assembly of the lamp The present invention relates to a light emitting diode lamp signal lamp for a signal lamp, which maintains a constant angle, improves directivity, and improves luminous efficiency.

In general, light emitting lamps used in various electronic devices, electronic signs, traffic lights, vehicle auxiliary stop lamps, etc. are configured by vertically arranging a plurality of LEDs (Light Emitting Diodes).

Particularly, in the traffic light, a light bulb that is currently manufactured as a light source requires not only a large amount of power consumption as an incandescent light bulb, but also has a long maintenance life due to the fact that its life is not long in case of continuous use. There is this.

As such, in order to compensate for incandescent bulbs, which are vulnerable in terms of energy and maintainability, a traffic light using a light emitting diode as a light source has been recently disclosed.

A general light emitting diode lamp traffic light will be described with reference to Figs. 1 and 2. Fig. 1 is a plan sectional view showing the configuration of a general light emitting diode lamp signal light, and Fig. 2 is an exploded view showing the configuration of a general light emitting diode lamp signal light.

As shown in the figure, the conventional LED lamp signal light includes a light emitting diode module 10 is provided with a plurality of, approximately 260 to 432 LED lamps 12 in a circular printed circuit board 11; A front cover (20) installed in front of the light emitting diode module (10), the convex lens shaped front cover for refracting light emitted from the light emitting diode lamp (12) to improve visibility; A rear case 30 installed at a rear side of the light emitting diode module 10 with a concave receiving portion; A power supply device 40 installed in the rear case 30 to supply power to the light emitting diode module 10; And fixing means 50 for connecting and fixing the front cover 20 and the rear case 30.

Here, the connection portion to which the front cover 20 and the rear case 30 are connected by the fixing means 50 may further include a waterproof rubber ring 51 which is opened for waterproofing.

Reference numeral 52 is a power line to provide an external power supply to the power supply 40.

As described above, the configuration of the light emitting diode lamp 12 constituting the light emitting diode module 20 in the light emitting diode lamp signal lamp will be described with reference to FIG. 3.

3 is a configuration diagram showing the configuration of a conventional light emitting diode lamp 12. As shown in FIG.

As shown in the figure, a conventional LED lamp, each of the first end is soldered to the printed circuit board 12, the other end of the first is connected to the light emitting diode chip 61 provided therein by a gold wire 62 And second leads 63 and 64; The chip 61, the gold wire 18, and the dome-type epoxy resin part 65 may be resin-molded with epoxy to a predetermined portion of the first and second leads 63 and 64.

However, the light emitting diode lamp constituting the conventional light emitting diode lamp signal has a problem that the epoxy resin portion of the light emitting diode lamp is in close contact with the printed circuit board may cause the disconnection of the lamp due to lamp soldering or environmental thermal shock.

In addition, since the mounting angle of the light emitting diode lamp is mounted in accordance with the planar state of the epoxy resin portion, there is a problem that causes unevenness of the orientation angle.

Accordingly, the present invention has been made to solve the above problems, by maintaining the epoxy resin portion a predetermined distance from the printed circuit board to minimize the impact from the thermal shock to improve the reliability of the product, increase the visibility of traffic lights The purpose of the present invention is to provide a light emitting diode lamp signal light and a light emitting diode lamp provided therein.

In addition, another object of the present invention is to provide a light emitting diode lamp signal having a light emitting diode lamp that can maintain the assembly angle of the lamp to improve the directivity characteristics, and improve the brightness efficiency.

1 is a cross-sectional view showing the configuration of a general light emitting diode lamp traffic light.

2 is an exploded view showing the configuration of a general LED lamp.

Figure 3 is a block diagram showing a conventional light emitting diode lamp provided in a general light emitting diode lamp traffic light.

4 is an exploded view showing a light emitting diode lamp traffic light according to the present invention;

5 is a longitudinal sectional view showing a directional holding member of a light emitting diode lamp signal light according to the present invention;

Figure 6 is a block diagram showing a light emitting diode lamp according to the present invention.

* Explanation of symbols for main parts of the drawings

100: light emitting diode module 110: printed circuit board

121: light emitting diode chip 122, 123: lead wire

124: epoxy resin portion 125: holder

125c: mounting portion 125a, 125b: lead wire insertion hole

126: reflecting surface 125d: extension

200: orientation holding member 210: concave groove

The present invention to achieve the object of the present invention, a printed circuit board; A plurality of light emitting diode lamps mounted on the printed circuit board; A directivity holding member installed in front of the printed circuit board and refracting light emitted from the light emitting diode lamp in a predetermined direction; A rear case installed behind the printed circuit board; A power supply unit installed in the rear case and supplying power to the light emitting diode lamp; And it provides a light emitting diode lamp signal comprising a fixing member for connecting and fixing the directivity holding member, the front cover and the rear case.

The directional holding member is formed with concave grooves on the side opposite to the light emitting diode lamp so as to refract the light emitted from the light emitting diode lamp.

The concave groove of the directional holding member has a semicircular cross section when viewed in a plan view, and has a "∠" shape in which the open side faces the light emitting diode lamp side when viewed in the longitudinal direction.

The light emitting diode lamp may include a light emitting diode chip; First and second lead wires having one end connected to the light emitting diode chip, respectively; An epoxy resin part for molding an epoxy resin to a predetermined portion of the light emitting diode chip and the first and second lead wires; And a holder accommodating the epoxy resin portion and into which the first and second lead wires are inserted and extended.

A mounting portion having a lower surface attached to an upper surface of the printed circuit board and having lead wire insertion holes through which the first and second lead wires pass; And an extension part integrally formed on an upper surface of the mounting part, and having an accommodation space in which the epoxy resin part is accommodated in a central part, and a lead wire insertion hole communicating with a lead wire insertion hole of the mounting part.

Round grooves are formed on an upper surface of the extension part, and a constant surface of the groove is provided with a coating reflection surface coated to increase reflectance of light emission of the light emitting diode chip.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

Figure 4 is an exploded view showing the configuration of the LED lamp signal light according to the present invention, Figure 5 is a longitudinal sectional view showing the directional holding member constituting the LED lamp signal light according to the present invention.

As shown in the drawings, the LED lamp according to the present invention includes a light emitting diode module 100 in which a plurality of light emitting diode lamps 120 are installed on a circular printed circuit board 110; The directivity holding member 200 is installed in front of the light emitting diode module 100 to refract the light emitted from the light emitting diode lamp 120 to improve visibility and directivity in a predetermined direction, that is, in a straight direction and a downward direction. )Wow; A front cover (300) installed in front of the directivity holding member (200), the convex lens type front cover (300) for further refraction of light emitted from the directivity holding member (200) to improve visibility; A rear case 400 installed at a rear side of the light emitting diode module 100 with a concave receiving portion; A power supply device 500 installed in the rear case 400 to supply power to the light emitting diode module 100; And a fixing member 600 which connects and fixes the directional holding member 200, the front cover 300, and the rear case 400.

The directional holding member 200 is formed in a plate shape having a predetermined thickness to refract the light emitted from the light emitting diode lamp 200, and the concave groove 210 is continuously formed on the side opposite to the light emitting diode lamp 120. Is formed. At this time, when the concave groove 210 is viewed in a plane as shown in Figure 4, the cross-sectional shape is made of a semi-circle, when viewed in the longitudinal side as shown in Figure 5, the inclined side is directed downward, that is, the open side On the left side of this figure, more specifically, it has a "∠" shape toward the light emitting diode lamp 120 side. Here, the side shape of the concave groove 210 may be formed round rather than acute angle.

The configuration of the light emitting diode lamp 120 constituting the light emitting diode module 100 will be described with reference to FIG. 6. 6 is a configuration diagram showing a light emitting diode lamp according to the present invention.

As shown in the figure, the light emitting diode lamp 120 includes a light emitting diode chip 121; First and second lead wires 122 and 123 having one end connected to the light emitting diode chip 121, respectively; Dome-type epoxy resin portion 124 and the epoxy resin portion 124 for epoxy resin molding to a predetermined portion of the chip 121 and the first and second lead wires 122 and 123 are accommodated. The second lead wires 122 and 123 include a holder 125 through which the second lead wires 122 and 123 are inserted.

The holder 125 has lead wire insertion holes 125a and 125b through which the first and second lead wires 122 and 123 penetrate, and a pillar having a lower surface attached to an upper surface of the printed circuit board 110. The mounting portion 125c of the form, and is formed integrally extending on the upper surface of the mounting portion 125c is formed to be paper so as to extend in the extension direction, the receiving space (not shown) in which the epoxy resin portion 124 is accommodated in the center ) Is provided, and is made of a hemispherical expansion part 125d having lead wire insertion holes (not shown) communicating with the lead wire insertion holes 151a and 151b of the mounting portion 125c.

Round grooves are formed on the upper surface of the expansion part 125d, and the groove surfaces are provided with a coating reflection surface 126 coated with a reflection member to increase the reflectance of light emission of the LED chip 121.

The reflecting member is made of a material having a high reflectance. For example, the reflecting member forms a reflecting surface to increase the luminous efficiency of the lamp by coating chromium plating.

It is preferable that the extension length of the extension portion 125d extends to 2/3 of the epoxy resin portion 124, and the upper portion of the groove of the light emitting diode chip 121 is formed according to the formation of the round groove. It is preferred to be located on the side.

Meanwhile, end portions of the first and second lead wires 122 and 123 extending through the communication hole of the extension part 125 and the lead wire insertion holes 125a and 125b of the mounting part 125c are printed circuit boards 110. Is connected to.

The connection part to which the front cover 300 and the rear case 400 are connected by the fixing means 600 may further include a waterproof rubber ring 610 which is opened for waterproofing, and the front cover 300 is May be omitted.

Reference numeral 620 is a power line for providing an external power supply to the power supply 500.

Referring to the assembly operation of the LED lamp signal according to the present invention configured as described above are as follows.

First, the directivity holding member 200 is positioned on the upper portion of the light emitting diode module 100, the upper cover 300 is positioned on the directing holding member 200, and power is supplied to the lower portion of the light emitting diode module 100. The rear cover 600 is positioned with the device 500 interposed therebetween to couple the light emitting diode module 100, the directivity holding member 200, and the rear cover 600 through the coupling member 600. At this time, the waterproof member 610 is interposed between the light emitting diode module 100 and the rear cover 400.

Next, the operation of assembling the LED lamp of the present invention will be described.

The first and second lead wires 122 and 123 integrally provided under the epoxy resin part 124 are inserted into the lead wire insertion hole (not shown) of the holder 125 and the extension part 125d, and the extension part ( The epoxy resin part 124 is coupled to the holder 125 by being inserted into the lead wire insertion holes 125a and 125b of the mounting part 125c formed integrally with 125d).

Thereafter, the mounting portion 125c of the holder 125 is soldered and welded on the bottom surface of the printed circuit board 110. At this time, the mounting portion 125c maintains a close contact with the top surface of the printed circuit board 110.

When external power is supplied to the LED lamp signal lamp assembled according to the present invention through the power line 610, the LED lamp 120 of each LED module 120 of the LED module 100 is supplied through the power supply device 500. Current is supplied to the lead wires 122 and 123.

When current is supplied through the lead wires 122 and 123, the light emitting diode chip 121 emits light. The light emitting diode chip 121 emits light by primary light emission and reflection of the reflecting surface 126. Secondary light emission improves luminous efficiency.

The light emitted by the reflection of the light emitting diode chip 121 and the reflecting surface 126 of the light emitting diode lamp 120 is mostly refracted forward and downward in the directivity holding member 200 through the front cover 200. It is emitted to the outside.

Here, the light passing through the directional holding member 200 is refracted by the predetermined shape of the concave groove 210 of the directional holding member 200 shown in FIG. 5, the opening side of which is directed to the left in the drawing. 5, the light passing through the upper side of the concave groove 210 is linearly transmitted to the lower side of the concave groove 210 when the concave groove 210 is viewed. It is transmitted with an angle of refraction that is relatively refracted downward. Thus, it is possible to further improve the directivity of the driver and the visibility of the driver located relatively below the traffic light.

In addition, the present invention has higher luminous efficiency than the light emitting diode lamp without the reflective surface 126, so that the number of light emitting diode lamps can be reduced, resulting in cost reduction and power saving.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

As described above, the light emitting diode lamp according to the present invention has the effect of minimizing the influence from thermal shock by maintaining the epoxy resin portion at a predetermined distance from the printed circuit board to prevent disconnection of the lamp, thereby improving product reliability. .

In addition, the present invention has the effect of improving the directivity by maintaining a constant assembly angle of the lamp by a stable mounting of the holder and the printed circuit board.

In addition, according to the present invention, light emission by the light emitting diode chip is primarily performed, and in addition to the secondary light emission by reflection of the reflective surface, the light efficiency is improved, and the number of light emitting diode lamps can be reduced. In addition, the cost and power can be reduced.

In addition, the present invention has the effect of increasing sufficient visibility to the driver.

Claims (12)

Printed circuit board; A plurality of light emitting diode lamps mounted on the printed circuit board; A directivity holding member installed in front of the printed circuit board and refracting light emitted from the light emitting diode lamp in a predetermined direction; A rear case installed behind the printed circuit board; A power supply unit installed in the rear case and supplying power to the light emitting diode lamp; And Fixing member for connecting and fixing the directional holding member, the front cover and the rear case Light emitting diode lamp traffic light comprising a. The method of claim 1, The directional holding member It is formed in a plate shape having a predetermined thickness, and concave grooves are continuously formed on the side opposite to the light emitting diode lamp so as to refract the light emitted from the light emitting diode lamp in a straight line and downward direction. LED lamp traffic light. The method of claim 2, The concave groove of the directional holding member When viewed in a plan, the cross-sectional shape is formed in a semicircle, and when viewed in the longitudinal direction, the open side is formed in a "∠" shape directed toward the light emitting diode lamp side. LED lamp traffic light. The method according to any one of claims 1 to 3, The light emitting diode lamp Light emitting diode chip; First and second lead wires having one end connected to the light emitting diode chip, respectively; An epoxy resin part for molding an epoxy resin to a predetermined portion of the light emitting diode chip and the first and second lead wires; And Holder for accommodating the epoxy resin portion and the first and second lead wires are extended Light emitting diode lamp traffic light comprising a. The method of claim 4, wherein The holder is A mounting portion having a lower surface attached to an upper surface of the printed circuit board and having a lead wire insertion hole through which the first and second lead wires pass; And It is formed integrally extending on the upper surface of the mounting portion, consisting of an extension portion is formed extending the lead wire insertion hole in communication with the lead wire insertion hole LED lamp traffic light. The method of claim 4, wherein The holder is A mounting portion having a lower surface attached to an upper surface of the printed circuit board and having a lead wire insertion hole through which the first and second lead wires pass; And It is formed integrally extending on the upper surface of the mounting portion, the center is provided with a receiving space for accommodating the epoxy resin portion, the extension portion formed with a lead wire insertion hole communicating with the lead wire insertion hole of the mounting portion LED lamp traffic light. The method according to claim 5 or 6, The mounting portion is formed in a cylindrical shape, The expansion portion is made of a hemispherical shape is formed to be paper to expand in the extending direction LED lamp traffic light. The method according to claim 5 or 6, Round grooves are formed on the upper surface of the extension part, and regular groove surfaces are provided with a coating reflection surface coated to increase reflectance of light emission of the light emitting diode chip. LED lamp traffic light. The method of claim 8, The coating reflection surface is formed of a chromium plating coating LED lamp traffic light. The method of claim 1, It is installed in front of the orientation holding member to cover the orientation holding member, further comprising a front cover of the convex lens type for refracting the light emitted from the orientation holding member. LED lamp traffic light. A light emitting diode lamp provided in a light emitting diode lamp signal light, The light emitting diode lamp Light emitting diode chip; First and second lead wires having one end connected to the light emitting diode chip, respectively; An epoxy resin part for molding an epoxy resin to a predetermined portion of the light emitting diode chip and the first and second lead wires; And The epoxy resin portion accommodates the lower surface is attached to the upper surface of the printed circuit board, the mounting portion formed with lead wire insertion hole through which the first and second lead wires are formed, and integrally extending on the upper surface of the mounting portion, The holder is provided with an accommodating space accommodating the epoxy resin portion, the extension portion formed with a lead wire insertion hole communicating with the lead wire insertion hole of the mounting portion Light emitting diode lamp comprising a. The method of claim 11, Round grooves are formed on an upper surface of the extension part, and a constant surface of the grooves is formed with a coated reflective surface to increase reflectance of the light emitting diode chip. LED lamp.