KR200423199Y1 - ??? Lamp - Google Patents

Abstract

The present disclosure relates to a lamp using an LED. The LED lamp of the present invention receives AC 220V single-phase commercial power directly from the outside without using an adapter, rectifies it to the voltage drop and required DC voltage, smoothes it, and applies it to a plurality of series-connected LED elements. It is configured to emit light. In addition, a first PCB substrate into which the elements of the above configuration are inserted and fixed in the rear cover and a second PCB substrate into which a plurality of arranged LEDs are inserted are accommodated to face each other, and diffusion of light emitted from the LEDs arranged on the second PCB substrate. To facilitate this, a front cover engraved with a predetermined pattern is mounted to be detachably attached to the rear cover. Therefore, the present invention has a low power consumption and a long life of the lamp according to the semi-permanent LED characteristics, there is no hassle to replace frequently, very efficient in terms of energy saving and eco-friendly high reliability that is not harmful to the human body is guaranteed. To provide.

LED, lamp

Description

LED lamps

1 is a block diagram showing an LED lamp according to the present invention,

2a-2c is an external view showing an LED lamp according to the present invention,

3A-3C show the structure of the LED lamp of FIG. 2;

<Description of the symbols for the main parts of the drawings>

11 voltage drop 13 rectifier

15: light emitting part R1, R2: resistance

F1: fuse C1, C2: ceramic

C3: Smoothing capacitor LED1 to LED8: Light emitting diode

The present invention relates to a lamp using a light emitting diode (LED), and more particularly to an LED lamp that can reduce the size of the lamp, extend the life and reduce the power consumption by configuring a single lamp with a plurality of LEDs. It is about.

Generally, lamps used in daily life include fluorescent lamps and incandescent lamps. Such lamps are operated by AC power, and have a disadvantage in that the power consumption is high and the brightness is high, but the lifetime and illuminance of the lamp are reduced when the lamp is operated for a long time.

For example, a guide light installed to display emergency exits or the like around stairs and doors of a building is to easily inform people of letters or symbols displayed on the front panel even in a dark place. Letters or symbols are brightly and clearly displayed even in the dark by a lamp mounted inside. Induction lamps are lit for a long time for this purpose. However, since a fluorescent lamp or an incandescent lamp is mounted in the conventional induction lamp, the lamp in the induction lamp must be replaced due to the deterioration of the lifetime and the brightness of the lamp after a certain time.

As such, due to the short lifespan, the lamp has to be replaced after being replaced for less than a year after the lamp is replaced, resulting in huge costs associated with lamp replacement.

Of course, there are lamps using LEDs which have advantages of low operating voltage, fast response speed and small size, and long operating life. However, the conventional LED lamp is limited in the installation space because the power supply for driving using the adapter is supplied. Therefore, it is difficult to install in narrow spaces and enclosures, such as general lighting, equipment lighting, and other special lighting, so that the lighting did not function properly.

Accordingly, an object of the present invention is to provide an LED lamp that is configured to be supplied directly to commercial power directly without using an adapter, making it easy to install anywhere without any restrictions in space.

The LED lamp of the present invention for achieving the above object is, in the lamp using the LED, the input resistance for receiving an AC (commercial power) from the outside, the resistor and a plurality of ceramics are connected in parallel to the input resistance A voltage drop unit for dropping the AC power input through the voltage drop; a fuse connected between the input resistance and the voltage drop unit to protect the circuit from an overvoltage input; And a light emitting unit in which a rectifying unit of a bridge diode for rectifying the light source, a smoothing capacitor for smoothing the rectified voltage, and a plurality of LED elements for emitting light by receiving the smoothed DC voltage are connected in series.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 shows the internal configuration of the LED lamp according to the present invention. The LED lamp illustrated in FIG. 1 includes an input resistor R1 for receiving AC 220V single-phase commercial power supplied from the outside, and a voltage drop unit 11 for dropping the commercial power of the input AC 220V to a predetermined value. And a fuse F1 connected between the input resistor R1 and the voltage drop section 11 to protect the circuit from an instantaneous overvoltage input. The voltage drop unit 11 is composed of a parallel connection of a resistor R2 and a plurality of ceramics C1 and C2. The LED lamp of FIG. 1 also includes a rectifying unit 13 composed of bridge diodes for rectifying the voltage-dropped power source into a direct current (DC) power source required for operation, a smoothing capacitor C3 for smoothing the output of the rectifying unit 13, And a light emitting unit 15 in which a plurality of LED elements LED1 to LED8 are connected in series and emit light in total upon receiving a power supply. The LED lamp of Figure 1 having such a configuration is as shown in Figures 2a-2c.

Figure 2a-2c is an external view of the LED lamp according to the present invention, Figure 2a shows a front view, Figure 2b shows a plan view, respectively.

As shown in Figure 2a, the LED lamp is made of a rectangular rear cover 20 and the front cover (30). Of course, the shape of the lamp is not limited to the square can be produced in various forms. On one side of the rear cover 20, a power line for receiving commercial power is drawn out. The front cover 30 is detachably mounted to the rear cover 20, and to facilitate diffusion of light emitted from the LED elements LED1 to LED8 of the light emitting unit 15, as shown in FIG. 2B. The predetermined pattern is engraved.

2C is a state in which the front cover 30 is detached from the rear cover 20. The detailed structure is shown in FIGS. 3A to 3C.

As shown in FIG. 3A, the rear cover 20 has grooves 21A and 21B formed on both inner side surfaces thereof, and protrusions 22A to 22D are formed at both inner edges thereof. In the rear cover 20, a plurality of PCB boards 40A and 40B as shown in FIG. 3B are accommodated to face each other. That is, among the plurality of PCB substrates 40A and 40B, the first PCB 40A is placed below and the second PCB 40B is placed thereon.

Elements of the internal configuration shown in FIG. 1 are arranged on the first PCB substrate 40A, and a plurality of LED elements are arranged on the second PCB substrate 40B. Up to 16 LEDs may be arranged on the second PCB 40B, but embodiments are not limited thereto. In this embodiment, eight LEDs (LED1 to LED8) were used, and four were arranged alternately on two lines. Of course, the number and arrangement of LEDs can be variously modified. Grooves 41 and 42 are formed at both corners of the PCB boards 40A and 40B, and projections 22A to 22D formed at both inner corners of the rear cover 20 are inserted into the grooves 41 and 42, respectively. The 40A and 40B are fixed so as not to shake in the rear cover 20.

Meanwhile, as shown in FIG. 3C, the front cover 30 has locking jaws 31A and 31B formed at both sides thereof, and the locking jaws 31A and 31B are formed at both inner side surfaces of the rear cover 20. The connection between the rear cover 20 and the front cover 30 is fastened so as to be caught by 21A and 21B.

The LED lamp having such a structure receives AC 220V single-phase commercial power directly from the outside through a power line provided on one side of the rear cover 20. The AC 220V commercial power input from the outside is input to the voltage drop section 11 through the input resistor R1 and the fuse F1 arranged in the first PCB 40A. Here, the fuse F1 serves to protect the circuit from an instantaneous overvoltage input. The voltage drop unit 11 drops the input AC 220V power supply below a predetermined voltage by the values of the plurality of ceramics C1 and C2 and the resistor R2. The voltage drop is rectified to a direct current (DC) voltage via a rectifier 13 made of a bridge diode, and smoothed by a smoothing capacitor C3. The smoothed DC voltage is applied to the LED elements LED1 to LED8 of the light emitting unit 15 arranged on the second PCB substrate 40B to emit light as a whole. Light emitted from the LED elements LED1 to LED8 of the light emitting unit 15 is diffused to the outside through the front cover 30.

LEDs have a long life, small size and light weight. In addition, it has a feature that sufficient luminance can be obtained with a voltage of 1.8 to 2V and a current of 20 mA.

Therefore, the LED lamp of the present invention is easy to install and operate in a small space such as a terminal box of a vending machine, a repeater, or a telephone line, and is easy to operate and maintain. It is possible.

As described above, since the LED lamp of the present invention receives AC commercial power directly from the outside without using an adapter, the LED lamp can be reduced in size, so it is easy to install in a narrow space, and has a long life and low power consumption, thereby saving energy. Efficient in, has the effect of ensuring a high degree of environmentally friendly reliability that is not harmful to the human body.

Claims (4)

In the lamp using the LED, An input resistor for receiving an AC commercial power from the outside; A voltage drop unit for connecting a resistor and a plurality of ceramics in parallel to drop the AC power input through the input resistor; A fuse connected between the input resistor and the voltage drop unit to protect a circuit from an overvoltage input; A rectifying unit formed of a bridge diode for rectifying the voltage drop AC power to a DC voltage; A smoothing capacitor for smoothing the rectified voltage; And LED lamp including a light emitting unit connected in series with a plurality of LED elements for emitting light by applying the smoothed DC voltage. The front cover according to claim 1, wherein the LED lamp has a rear cover, which fixes the LED lamp components to the first PCB board, inserts and locks a plurality of LEDs arranged on the second PCB board, and removes the inside of the back cover. LED lamp, characterized in that configured to cover. The method of claim 2, wherein the protrusions are formed at both corners of the rear cover, and grooves are formed at both sides of the rear cover. LED lamp, characterized in that the locking jaw is formed on both sides of the front cover so that the locking jaw is caught in the groove of the rear cover. 3. The LED lamp of claim 2, wherein the second PCB substrate is capable of inserting up to 16 LEDs and arranges 8 LEDs in two lines alternately with each other.

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