KR20100054911A - The ac power led illuminating lamp apparatus having power stabilization function - Google Patents

Abstract

PURPOSE: An AC power LED lamp device is provided to reduce power consumption by optimizing power supply to an LED through a PWM(Pulse Width Modulation) circuit. CONSTITUTION: An LED lamp(10) includes a base(30) and a light transmissive cover(40). The base has a heat dissipation function. The light transmissive cover transmits the light emitted from an LED. An LED driving circuit includes a power supply, a constant voltage circuit, a bridge rectification circuit, and a PWM circuit. The power supply receives the AC power from the outside. The bridge rectification circuit rectifies the AC power. The constant voltage circuit stabilizes the power supply to the LED. A PWM circuit controls the amount of currents inputted into the LED.

Description

AC power LED illuminating lamp apparatus having power stabilization function

The present invention relates to an AC power LED lighting device having a power stabilization function. In detail, the present invention is mounted on a socket of a general fluorescent lamp so that it can be applied as a lamp, and implements LED lighting to be driven by alternating current by controlling the rectified circuit and the simplified number of LEDs without going through a dedicated circuit configuration such as a converter product The present invention relates to an AC-powered LED lighting device that can reduce size and reduce manufacturing costs, and simplifies the driving circuit by defining multiple LED arrangements and secures circuit reliability by eliminating electrolytic capacitors. .

In addition, the present invention can be expected to reduce the energy consumption according to the adoption of the pulse width modulation circuit, and to improve the usability of the product by adding a stabilization configuration for the voltage and current of the power supplied to drive the LED The present invention relates to an AC power supply LED lighting device.

The lighting device applied to the interior space lighting of the building using the LED is mainly applied to the main lamp of the room or the office, the table stand, etc., and can further illustrate the lighting tile using the light guide plate in a more advanced form.

Such a lighting device is configured by arranging a plurality of LED modules in which a plurality of LEDs are mounted in a specific arrangement, and installing the LED modules to a ceiling or a wall of a space. In particular, the LED module is accompanied by the A / D converter due to the characteristic that the LED is driven by a DC current of a suitable voltage.

The A / D converter as described above includes a transformer coil for stepping down alternating current, and such a transformer coil is disposed at a considerable size in the LED module, which causes a problem in that a product to which it is applied is enlarged.

In order to solve the above problems, a power supply device called a switching mode power supply (SMPS) is recently applied.

For reference, the SMPS is used by converting an alternating frequency (50 Hz ~ 60 Hz) into a direct current to a high frequency (tens dozens of hundreds ~ hundreds of kHz), according to the technology of high difficulty. In addition, by maximizing the power utilization rate by PWM (Pulse Width Modulation) method that converts frequency, it has high competitiveness and high stability compared to the existing method in terms of efficiency and economic efficiency.

Since the conventional LED lighting device is manufactured in the form of a rectangular box as described above, in order to replace the existing lighting device with the fluorescent lamp with the LED lighting device, it is necessary to remove the fluorescent lighting device and reinstall the equipment suitable for the LED lighting device. There are disadvantageous problems in terms of installation cost or installation time.

In addition, the SMPS applied for power supply of the LED lighting device, despite the advantages described above, the price is very expensive, so the frequency applied to the LED module requiring simple lighting is very low. In addition, since the SMPS itself is also quite large compared to the size of the LED module, there is a problem in miniaturization of the LED module, which makes it difficult to miniaturize the product itself.

In particular, since the LED lighting device is configured by arranging a plurality of LEDs, the overall current capacity is increased, so that the electrolytic capacitor is essentially used as a component. While such electrolytic capacitors are suitable for circuits with large capacitances, they have a problem in that the reliability of the circuit is lowered because of poor frequency characteristics and relatively high deterioration. In particular, in the circuit in which the plurality of LEDs are arranged, there is a problem in that the design of the exterior is limited as the inductor and the capacitor are increased in volume.

On the other hand, the LED lighting device as described above, if the over-power of the over-voltage, over-current is supplied due to the inevitable factor of the power source for supplying power or the overload on the LED driving circuit due to receiving an external AC power, the corresponding configuration This problem is caused by the failure of the product is exposed. In this case, such a problem causes a serious problem of economic loss due to the replacement of the product and the nature of the LED circuit configuration vulnerable to heat up to the risk of fire.

The present invention has been invented to solve the above problems.

Therefore, the present invention is mounted on a socket of a general fluorescent lamp, so that it can be applied as a lamp, and the configuration for implementing the LED lighting can be driven by alternating current by adjusting the rectifier circuit and the number of LEDs simplified, miniaturization of product size And to reduce the manufacturing cost, and to improve the configuration of a plurality of LED to simplify the driving circuit to provide an LED lamp device to ensure the reliability of the circuit by eliminating the electrolytic capacitor.

In addition, the present invention is expected to reduce the energy consumption according to the adoption of the pulse width modulation circuit, and at the same time, by adding a response configuration to the external over-power to significantly reduce the failure rate of the product and the safety concerns such as fire according to the LED Another object is to provide a lighting device.

In order to achieve the above object, the present invention has the following configuration.

The present invention, the LED is disposed in one direction, the light is emitted by an external power source, the tube-shaped light transmission cover is installed to the outside of the light emitted from the LED, and is coupled to the socket of the fluorescent lamp on both sides of the light transmission cover A fluorescent light-type LED luminaire equipped with a terminal for applying power; After receiving the AC power which is the driving source of the LED from the outside, rectifying it by the bridge rectifier circuit, and applying the rectified power to a plurality of LEDs and voltage drop devices connected in series, the applied power drops to each LED. An LED driving circuit for driving the LED as the power is applied to the LED; And a constant voltage circuit installed before the rectified power is applied to the plurality of LEDs to supply only a power of a desired voltage to have a stable power supply function.

In addition, the present invention, the LED is disposed in one direction, the light is emitted by an external power source, the tube-shaped light transmission cover is installed to the outside of the light emitted from the LED, and the socket of the fluorescent lamp on both sides of the light transmission cover A fluorescent lamp type LED luminaire having a terminal coupled thereto for applying power; After receiving the AC power which is the driving source of the LED from the outside, rectifying it by the bridge rectifier circuit, and applying the rectified power to a plurality of LEDs and voltage drop devices connected in series, the applied power drops to each LED. An LED driving circuit for driving the LED as the power is applied to the LED; A plurality of LEDs arranged in the device is divided into a plurality of LED groups, and each LED group is connected with LED driving circuits, and a plurality of LEDs in a single LED group are connected in series, and each LED with the LED driving circuits installed therein. The group is configured to include a LED array configuration formed in parallel to each other; is configured before, the rectified power is installed before being applied to a plurality of LEDs to supply only the power of the desired voltage constant voltage having a stable power supply function The circuit is further configured to include.

In the above configuration, the constant voltage circuit is a circuit in which a zener diode or varistor element is electrically connected. The LED driving circuit may further include a constant current circuit installed before the rectified power is applied to the plurality of LEDs to supply only a power of a desired current to have a stable power supply function. In particular, the LED driving circuit further comprises a smoothing circuit for removing the noise signal of the power supply passing through the bridge rectifier circuit.

In order to achieve the above another object, the present invention further comprises a PWM circuit 66 for the LED driving circuit 60 to maintain an optimal power supply state with respect to the power input value on the circuit.

As described above, the present invention can be applied to the existing fluorescent lamp socket without a separate lighting construction by manufacturing the LED luminaire in the form of a general fluorescent lamp, there is an effect that can obtain the production cost and the benefit of time. In particular, the present invention does not require a configuration such as a trans coil or a dedicated SMPS, so that the product can be further miniaturized, and the production cost is reduced by a more simplified circuit configuration, thereby improving consumer satisfaction. There is an effect that can increase the productivity by faster production.

In addition, the present invention has the effect of improving the reliability of the circuit configuration by improving the configuration of a large number of LEDs to simplify the driving circuit and to exclude the electrolytic capacitors that negatively affect the circuit and to configure the circuit. At the same time, the present invention enables the supply of power to be supplied under optimum conditions by the pulse width modulation circuit, thereby maximizing the energy saving effect when using the product.

In particular, the present invention is to ensure that the power supply of the voltage, current supplied from the outside can always be input in a stable state, to solve the failure of the product caused by the supply of over-power to prevent economic loss, thereby preventing overheating in the circuit It is effective to prevent safety accidents such as fire.

Embodiments of the present invention as described above will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a lighting device according to the present invention, Figure 2 is an enlarged cross-sectional view of the lighting device according to the present invention, Figure 3 is a circuit block diagram of the lighting device according to the present invention, Figure 4 is a lighting device according to the present invention Fig. 5 is a block diagram of the LED driving circuit, and Fig. 5 is a LED driving circuit diagram of the lamp device according to the present invention.

Referring to the drawings, the lighting apparatus according to the present invention is composed of a LED lighting device 10 and a circuit configuration unit 50 for driving the LED (L) of the LED lighting device (10). Here, the LED luminaire 10 is a mechanical configuration for implementing the lighting by driving the LED (L), the circuit configuration unit 50 is divided into LED driving circuit 60, LED array configuration 70 It is configured.

The LED luminaire 10 is formed in the same configuration as the shape of the "fluorescent lamp" the overall appearance is similar to that can be mounted to the socket of the ordinary fluorescent lamp installed in the interior, exterior of the building can be applied to the interior lighting.

Specifically, the LED lamp 10 is composed of a base 30 having a heat dissipation function, and a light transmission cover 40 for diffusing and transmitting the emitted light. In addition, the circuit configuration unit 50 is mounted on the printed circuit board (S) the LED (L) in the interior of the LED luminaire 10 to mount a number of electronic, electrical elements for driving the LED (L) Configuration.

The base 30 provides a space for the circuit component 50 to be installed, and the light transmission cover 40 is mounted on the printed circuit board S of the circuit component 50 as described above. The light emitted from the plurality of LEDs (L) is transmitted and diffused to implement the lighting.

In particular, the base 30 is a configuration of a beam (beam) having a longitudinal direction. The base 30 has the electronic and electrical components of the LED (L) and the circuit component 50 on the back surface of the printed circuit board S, that is, the surface of the light transmission cover 40 to be described later. A heat dissipation unit 31 for dissipating heat emitted from the device to the outside is formed. At this time, the base 30 is made of aluminum material having high heat dissipation efficiency to form the heat dissipation part 31, and the heat dissipation part 31 is naturally formed to project a plurality of heat dissipation fins to increase the heat dissipation area. Do.

In addition, the base 30 is a printed circuit board (S) and the heat dissipation unit 31 to transfer heat generated from the LED (L) and the circuit configuration unit 50 to the heat dissipation unit 31 through a larger area. The thermal conductive resin 32 is filled between the intervals. At this time, the thermally conductive resin is filled with a high thermal conductivity of epoxy, silicon, etc., such a resin also serves to mitigate the physical shock transmitted from the outer surface of the base (11).

The light transmissive cover 40 is the light transmissive cover 40 is an acrylic (PC, PMMA, ABS, PS, such as acrylic or other light-transmissive resin and a light diffusing agent mixed (hereinafter referred to as a light diffusion resin) LED (L) The light emitted from) is transmitted and diffused to implement lighting over a wider section.

Such a light transmission cover 40 is generally to maintain the overall shape of the LED light fixture 10 in the form of a circular tube, as shown in the figure, in addition, it may be configured in the form of a polygonal tube. At this time, the light transmission cover 40 is preferably arranged to be wrapped around the outside of the LED (L) is configured so that the light of the LED (L) can be transmitted over the entire section. In addition, such a light transmission cover 40 is produced by a process such as injection, extrusion of the light-diffusion resin as described above.

In particular, both sides of the light transmission cover 40 as described above is coupled to the socket of a general fluorescent lamp is configured to be equipped with a terminal 41 for applying power. At this time, it is obvious that the terminal 41 is configured to be electrically connected to the above-described circuit configuration unit 50 to supply external power.

Such a terminal 41 is configured to be able to fit the lamp device according to the present invention without additional construction or socket modification to the socket of a fluorescent lamp or a halogen lamp of a building generally installed.

The circuit configuration unit 50 includes a LED array circuit in which the LED driving circuit 60 and each LED group 71 configured by arranging a plurality of LEDs L in these LED driving circuits 60 in parallel form. Comprised of the voice portion 70 is as described above. Here, the plurality of LED groups 71 may be configured to emit light of a single color or a different color for each group.

The LED driving circuit 60 includes a power supply 61, a constant voltage circuit 62, a bridge rectification circuit 63, a constant current circuit 64, a smoothing circuit 65, and a PWM circuit 66.

The power supply unit 61 is configured to receive an AC power source to drive the device from the outside. At this time, the external AC power source is a 220V power source used as a Korean standard in the present embodiment and accordingly the number of LEDs (L) in the LED group 71 to be described later is specified. In particular, the power supply unit 61 as described above includes a fuse (61a) for shutting off the external power in a specific situation. Here, the specific situation refers to a situation in which excessive AC power exceeding a rating is input from the outside due to an unforeseen factor such as a short circuit.

The constant voltage circuit 62 is installed before the supplied power is applied to the plurality of LEDs (L). The constant voltage circuit 62 is a configuration for supplying a stable power supply by supplying only the power of the desired voltage as shown in the graph of FIG.

The constant voltage circuit 62 is configured by selecting a varistor element 62a or a Zener diode electrically connected to each other to maintain a constant voltage value when biasing in the forward / reverse direction. At this time, when the zener diode is applied, the AC power before rectification should be composed of two sets by having the alternating characteristics of the forward and reverse directions, and the varistor element itself functions when biasing in the forward / reverse direction. It can be configured as a single device by performing.

The bridge rectifier circuit 63 is a configuration of a diode circuit for rectifying the input power, it is preferable to apply a device configured in the form of a one chip in order to simplify the circuit.

The constant current circuit 64 is installed before the rectified power is applied to the plurality of LEDs (L). The constant current circuit 64 is a configuration for supplying a stable power supply by supplying only power of a desired current, and is preferably selected as a transistor circuit having an amplifier function. Such a constant current circuit 64 also has a one-chip type. It can be applied as an IC element.

The smoothing circuit 65 is for removing the RIPPLE voltage which is a noise factor after the input power is rectified by the bridge rectifying circuit 63. In the drawing, the smoothing circuit 65 illustrates a circuit formed by an inductor and a capacitor.

The PWM circuit 66 is configured to control the driving brightness of the LED (L) by controlling the input amount of current through the PWM control. That is, the PWM control optimizes the input amount (already optimized amount) of the current input to the LED group 71 through the pulse width modulation to prevent the power consumption more than necessary.

As described above, the LED arrangement unit 70 divides a plurality of LEDs (L) into a plurality of LED groups (71), and each LED group (71) is connected to the LED driving circuit 60 is installed in a single Multiple LEDs L in the LED group 71 are connected in series. When the plurality of LED groups 71 having a plurality of LED (L) array configuration connected in series as described above are connected in parallel to each other, the configuration is completed.

At this time, the LED (L) of the LED group 71 is composed of a plurality of LED (L) and the inductor (71a) or a resistor in series corresponding to the 220V power of the above-described power supply unit 61. The LED group 71 is configured to drive the LED L to a desired voltage by receiving the rectified power from the bridge rectifier circuit 63.

For more detailed description, for example, when the external AC voltage is input as 220V and the driving voltage of the LED L is 3.2V, the driving voltage is reduced when 18 to 60 LEDs L are connected in series. When divided into each LED (L) is applied to drop the voltage, and the rest of the voltage is applied to the inductor (71a) or the resistor in series with these LED (L) it is possible to obtain a stable circuit. In this case, the inductor 71a or the resistor is a device for voltage drop, and thus the number of the LEDs L can be changed by changing the value thereof.

The LED arrangement unit 70 divides the entire LED (L) arranged in the desired lighting device into a plurality of LED groups 71, the LED drive circuit 60 described above for each LED group 71 It is possible to divide the high capacitance by connecting. Therefore, such a configuration enables a circuit configuration without configuring a large capacity electrolytic capacitor.

Additional Example 1

7 is an exemplary view of a further embodiment 1 of the present invention.

Referring to the drawings, in the first embodiment, a configuration in which the sensor unit 67 and the remote controller 68 are added in connection with the PWM circuit 66 in the original embodiment is shown.

At this time, the PWM circuit 66 can control the driving brightness of the LED (L) because the input amount of current is controlled through the PWM control. Due to this, the PWM circuit 66 may be further provided with a sensor unit 67 for detecting a signal for adjusting the illumination brightness according to the surrounding environment factors such as the brightness or noise level of the interior, exterior.

In addition, the PWM circuit 66 may be further equipped with a configuration of the remote controller 68 to be able to adjust the brightness of the lighting by the user's intention at the same time with the automatic brightness adjustment function by the sensor unit 67. Here, the remote controller 68 may be applied by wire or wirelessly.

Additional Example 2

8 is an exemplary view of a second embodiment of the present invention.

Referring to the drawings, in the second embodiment, the voltage detecting circuit unit 80 is added to the configuration of the first embodiment.

The voltage detection circuit unit 80 is installed at each or the same time before or after the input power is rectified to detect the voltage input to the LED group 71, so that it can be output by various display devices Configuration.

For example, the detected voltage value may be configured by applying at least one of numerical display by 7-segment or the like, level form display such as level meter, numerical display and display by LCD liquid crystal, acoustic display by buzzer, speaker and the like. Can be.

Additional Example 3

9 is an exemplary view of a third embodiment of the present invention.

Referring to the drawings, in the third embodiment, the current detection circuit unit 90 is added to the original embodiment and the first and second embodiments.

The current detection circuit unit 90 is configured to detect and display a current value output after being applied to the LED group 71 to drive the LED (L). At this time, it is preferable that the current detection circuit unit 90 is mainly merged with the configuration of the PWM circuit 16 of the first embodiment so that the current detection value can be displayed on the wired / wireless remote controller 68.

In addition, the display means of the current detection circuit unit 90 also has a numerical display such as 7-segment or the like, as well as a level form display such as a level meter, a numerical display and a character display by an LCD liquid crystal, a buzzer, a speaker and the like as in the second embodiment. It may be configured by applying at least one or more sound display.

1 is a perspective view of a lighting device according to the present invention.

Figure 2 is an enlarged cross-sectional view of the lighting device according to the present invention.

Figure 3 is a block diagram of the circuit configuration of the lighting device according to the present invention.

Figure 4 is a block diagram of the LED driving circuit of the lamp device according to the present invention.

5 is a LED driving circuit diagram of the lighting device according to the present invention.

Figure 6 is a constant voltage waveform graph of the lighting device according to the present invention.

7 is a block diagram of a further embodiment 1 of the present invention;

8 is a block diagram of a further embodiment 2 of the present invention;

Figure 9 is a block diagram of a further third embodiment of the present invention.

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

10: LED luminaire 30: base

40: light transmission cover 50: circuit configuration

60: LED driving circuit 61: power supply

62: constant voltage circuit 62a: varistor element

63: bridge rectification circuit 64: constant current circuit

65: smoothing circuit 66: PWM circuit

70: LED array configuration 71: LED group

Claims (7)

LED (L) is disposed in one direction to emit light by an external power source, the tube-shaped light transmission cover 40 is installed to the outside of the light emitted from the LED (L), the light transmission cover 40 A fluorescent lamp type LED luminaire 10 coupled to sockets of fluorescent lamps on both sides thereof and equipped with a terminal 41 for applying power; Receiving AC power to be the driving source of the LED (L) from the outside, rectified by the bridge rectifier circuit 63, and then applying the rectified power to a plurality of LED (L) and voltage drop device connected in series An LED driving circuit 60 for driving the LED L as the applied power is dropped and power is applied to each LED L; A constant voltage circuit 62 installed before the rectified power is applied to the plurality of LEDs L and supplying only a power of a desired voltage to have a stable power supply function; AC power LED lighting device having a power stabilization function comprising a. LED (L) is disposed in one direction to emit light by an external power source, the tube-shaped light transmission cover 40 is installed to the outside of the light emitted from the LED (L), the light transmission cover 40 A fluorescent lamp type LED luminaire 10 coupled to sockets of fluorescent lamps on both sides thereof and equipped with a terminal 41 for applying power; Receiving AC power to be the driving source of the LED (L) from the outside, rectified by the bridge rectifier circuit 63, and then applying the rectified power to a plurality of LED (L) and voltage drop device connected in series An LED driving circuit 60 for driving the LED L as the applied power is dropped and power is applied to each LED L; The plurality of LEDs (L) arranged in the device is divided into a plurality of LED groups 71, each LED group 71 is connected to the LED drive circuit 60 is installed in a plurality of LED group 71 in a single LED group 71 (L) is connected in series, each LED group 71 is provided with the LED driving circuit 60 is connected to each other in parallel LED array configuration 70 formed; AC power LED lighting device having a power stabilization function comprising a. The method of claim 2, And a constant voltage circuit 62 installed before the rectified power is applied to the plurality of LEDs L and supplying only a power of a desired voltage to have a stable power supply function. Having AC power LED lighting device. 4. The constant voltage circuit of claim 1 or 3, wherein An alternating current power LED lighting device having a power stabilization function, characterized in that the circuit is electrically connected to the zener diode or varistor element. The LED driving circuit 60 according to any one of claims 1 to 3, wherein AC power LED lighting device having a power stabilization function, characterized in that it further comprises a PWM circuit (66) for maintaining an optimal power supply state for the power input value on the circuit. The LED driving circuit 60 according to any one of claims 1 to 3, wherein Power supply stabilization function further comprises; a constant current circuit 64 is installed before the rectified power is applied to a plurality of LED (L) to supply only the power of the desired current has a stable power supply function; Having AC power LED lighting device. The LED driving circuit 60 according to any one of claims 1 to 3, wherein AC power supply LED lighting device having a power stabilization function further comprising; smoothing circuit (65) for removing the noise signal of the power supply that passed through the bridge rectifier circuit (63).

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