KR101690275B1 - LED lamp driving device free from electric shock, and operating connected to the ballast for fluorcent lamp, and the LED lamp comprising the device - Google Patents

Abstract

Recently, the importance of green industry for energy saving is emphasized. As a part of this, LED lamps are being widely used, but conventional glass tube fluorescent lamps are not actively being replaced with LED lamps because replacement of existing fluorescent lamps with LED lamps is required in fluorescent lamp fixtures This is because replacing the existing fluorescent ballast and replacing the LED converter is too difficult. Since the LED lamp of the present invention uses the AC power outputted from the fluorescent lamp ballast as it is to drive the LED lamp, the fluorescent lamp including the fluorescent lamp ballast is used as it is, The installation of the lamp is completed. However, at this time, the LED lamp has the function of preventing the electric shock, the safety function such as the fire prevention function, the safety area operation function, and the K10025 electric appliance safety standard, K10025 It should be appropriate. According to the present invention, a substitute fluorescent lamp type LED lamp can satisfy the safety standard K10025 without changing the shape of the conventional fluorescent lamp. Therefore, the present invention will contribute greatly to the spread of the fluorescent lamp replacement type LED lamp.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an LED lamp driving apparatus and a LED lamp using the LED lamp driving apparatus, }

The present invention relates to an LED lamp which can be used by replacing a conventional fluorescent lamp with an efficient LED lamp by replacing a conventional fluorescent lamp with a fluorescent lamp with an electronic fluorescent ballast, The present invention relates to an LED lamp on which a device is mounted.

In recent years, various lighting fixtures including fluorescent lamps have been replaced with LED lamps having similar appearance and capable of sharing sockets and having high efficiency for energy saving. However, since the conventional fluorescent lamp fixture is built in the conventional fluorescent lamp fixture, it is inconvenient to replace the fluorescent lamp stabilizer installed in the existing fluorescent lamp fixture with the LED converter in order to use the general LED lamp, Diffusion is not activated. Therefore, it is required to replace the conventional glass tube fluorescent lamp in a conventional fluorescent lamp and replace it with a fluorescent lamp-type LED lamp, 25th [Notification No. 2013-085 of the Korea Technology Standards Agency] The electric appliance safety standard for K-10025, replacement lamp for fluorescent lamps has been announced. The above K-10025 requires the safety of electric shock, fire safety, and operation stability for a fluorescent lamp replacement type LED lamp as key technical matters. Stability requirements for electric shocks are as follows: "When one cap of the fluorescent lamp is plugged into the luminaire, there is no danger of electric shock even if the human body touches the other cap" and the safety against fire is " The safety requirement for the operation is that the LED lamp should operate stably regardless of the type of fluorescent lamp ballast and if it is out of the safe operating range, There will be.

It is an object of the present invention to provide a fluorescent lamp substitute LED lamp driving apparatus which can be used in connection with an electronic fluorescent lamp ballast and which satisfies safety requirements including an electric current interruption function, And an LED lamp equipped with the driving device. The electronic fluorescent lamp ballast [A] and the general fluorescent lamp [B] constructed as shown in FIG. 1 are connected through a filament formed in both caps of the fluorescent lamp with a coil L and a resonant capacitor C inside the ballast, . 1, when one cap [a ', b' terminal] is plugged into the lamp [a, b] and the other cap [c ', d' No electrocurrent flows. This is because one cap [a ', b' terminal side] of the general fluorescent lamp is electrically separated from the other cap [c ', d' terminal side]. However, when both caps are plugged into the lamp, the coil [L] and the resonant capacitor [C] in the ballast are connected to each other through the filament formed on both caps of the fluorescent lamp, and a voltage of about 550 Vpp As a result, this voltage waveform [550 Vpp, 45 kHz] is caught by both cap terminals of the fluorescent lamp, so that a discharge current flows through the fluorescent lamp. However, even in the case of a fluorescent lamp replacement type LED lamp, it is required that an electric current does not flow to the human body even if one cap of the LED lamp is inserted into a lamp and the human body touches the other cap. The present invention provides such a fluorescent lamp substitute LED lamp driving apparatus and an LED lamp equipped with the driving apparatus.

The fluorescent lamp replacement LED lamp driving apparatus of the present invention, like the conventional conventional fluorescent lamp, is provided with an LED lamp, in which both side caps of the LED lamp are electrically and completely So that no electric current is allowed to flow through the human body even if the other cap is in contact with the other one of the caps. When both the caps of the LED lamp are connected to the fluorescent lamp, the LED A closed circuit is formed between the two side caps of the lamp to receive the electric energy supplied between the two side caps of the LED lamp in the fluorescent ballast [A], and the LED lamp is driven by the electric energy.

The fluorescent lamp replacement lamp driving apparatus and the LED lamp equipped with the driving apparatus of the present invention cut off the electric current by the same method as that of the conventional general fluorescent lamp, The LED lamp of the present invention, which has the same structure as a general fluorescent lamp and is stably installed in a conventional fluorescent lamp, is improved in energy efficiency by 35% to 40% compared to a conventional fluorescent lamp. It is expected to contribute greatly.

; 접지단자BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing the interconnection and operation relationship between an electronic fluorescent lamp ballast and a glass tube type general fluorescent lamp; Fig.
FIG. 2 is a circuit diagram of a conventional fluorescent lamp replacement type LED lamp having no electric current interruption function. [Registration No. 10-0891740]
FIG. 3 is a view showing the configuration of a conventional LED lamp cap with a built-in switch for preventing an electric current from being interrupted. [Registration No. 10-1373216]
4 is a circuit diagram and block diagram of a fluorescent lamp replacement LED lamp driving apparatus having an electric current cutoff function according to an embodiment of the present invention and an LED lamp [B] equipped with the driving apparatus.
5 is a circuit diagram and block diagram of a fluorescent lamp substitute LED lamp driving apparatus having an electric current cutoff function according to still another embodiment of the present invention and an LED lamp [B] equipped with the driving apparatus.
Description of the Related Art
A; Electronic fluorescent ballast
B; Glass tube type fluorescent lamp [Fig. 1]
B; LED lamp. [Figure 4], [Figure 5]
a, b; Resonance output terminal of fluorescent ballast
c, d; Resonant feedback terminal of fluorescent ballast
a ', b'; Power input terminal of fluorescent [LED] lamp
c ', d'; Power Feedback Terminal for Fluorescent [LED] Lamp
B ₁ : LED lamp driving device
B ₂ : LED matrix array
1. Redundancy bridge rectifier circuit block of LED lamp [Fig. 4]
Bridge rectifying circuit block of LED lamp [Figure 5]
1.1 First Redundancy Bridge rectifier circuit block [Figure 4]
First bridge rectifier circuit block [Figure 5]
1.2 Second Redundancy Bridge rectifier circuit block [Fig. 4]
Second bridge rectifier circuit block [Figure 5]
2. Current limit relay drive circuit block
2.1 Current Limiting Circuit Block
3. LED array control circuit block
4. Energy charge / discharge circuit block
5. Overcurrent blocking circuit block
U1; High Frequency Oscillation and Current Control IC
U2; Comparator for Overcurrent Protection
D1 to D12; The first to twelfth diodes
D11, D21, D31, D41, D51, D61, D71, D81: Redundancy diode
C1-C10; The first to tenth capacitors
R1 to R12; The first to twelfth resistors
Rcs; Current detection resistor
L1; The first coil
ZD1 to ZD2; The first and second zener diodes
RY1; 2 Circuit C Type Relay
Q1; NPN type transistor
CN1; Input power connector
CN2; Connector for LED current supply
+; Bridge rectification + terminal

; Grounding terminal

In order to achieve the above object, an operation principle of a fluorescent lamp substitute LED lamp driving apparatus [B ₁ ] and an LED lamp [B] equipped with the driving apparatus according to the present invention having an electric current shutoff function will be described in detail with reference to the drawings . The conventional glass tube type general fluorescent lamp constructed as shown in FIG. 1 has been described in the above item for the problem to be solved. However, in the conventional fluorescent lamp replacement type LED lamp as in the configuration of FIG. 2, the two caps of the LED lamp are connected through C _RES1 to _RES4 and are also connected through D _{121 to} D ₁₂₈ , There is no blocking function. In order to have a function of blocking the electric current in the conventional fluorescent lamp replacement type LED lamp having the configuration as shown in FIG. 2, a base cap having the structure of FIG. 3 (configuration number 10-1373216) is used between both cap terminals and circuit components, It should be electrically disconnected. However, as shown in FIG. 3, the base cap having the structure of Registration No. 10-1373216 has a complicated structure and is expensive, and is likely to malfunction due to a contact error due to a mechanical error of a fluorescent lamp. . On the other hand, in the fluorescent lamp substitute LED lamp driving apparatus [B1] and the LED lamp [B] equipped with the driving apparatus according to the present invention having the electrostatic current cutoff function of the present invention as shown in Fig. 4, 2] Circuit 3 of C type relay [RY1] is attached to terminal 2, and terminal 8 of relay is attached to terminal 9. As a result, the 2 [c ', d'] terminals of one cap of the LED lamp are, as shown in the circuit diagram of FIG. 4,

c 'terminal → relay terminal 3 → relay terminal 2 → relay terminal 9 → relay terminal 8 → terminal d'

The reason for this is that since the c-terminal and the d-terminal are connected to each other at the initial start time, the relay coil is closed so that the current can flow, Is not connected and is completely electrically separated from the 2 [a ', b'] terminals of the other cap of the LED lamp. Therefore, in the LED lamp driving apparatus and the LED lamp equipped with the driving apparatus of the present invention, the cap is placed in the fluorescent lamp, and the other cap is brought into contact with the human body The electric current does not flow. However, if both caps on both sides of the LED lamp are plugged into the fluorescent lamp,

a → a '

b → b '

c → c '

d → d '

The terminal a is connected to the a 'terminal, the terminal b to the terminal b', the terminal c to the terminal c 'and the terminal d to the terminal d'

)→ D₃₁→ D₃ → F₂ → b' → b → C→ c → c' → 릴레이 3 번 단자 → 릴레이 2 번 단자 → 릴레이 9 번 단자 → 릴레이 8 번 단자 d'단자 → d 단자L ₁ → a → a '→ F ₁ → D ₁ → D ₁₁ → R ₄ → C ₅ → GND (

) → D ₃₁ → D ₃ → F ₂ → b → b → C → c → c → relay 3 terminal → relay 2 terminal → relay 9 terminal → relay 8 terminal d 'terminal → d terminal

, A fifth rectifier C5 is charged with a positive (+) voltage and a relay RY1 is connected to the positive (+) terminal of the bridge, so that a current flows through the relay RY1 . Meanwhile, since the relay [RY1] shown in Fig. 4 of the present invention is a C type relay in two circuits, when a current flows between the coil [relay 1 and terminal 10] of relay [RY1]

Terminal No. 3 → Terminal No. 4 (It is separated from Terminal No. 2 and attached to Terminal No. 4)

Terminal 8 → Terminal 7 (It is separated from terminal 9 and attached to terminal 7)

, Terminal 3 is connected to terminal 4, terminal 8 is connected to terminal 7, and as a result,

c terminal → c '→ relay terminal 3 → relay terminal 4

d terminal → d '→ relay terminal 8 → relay terminal 7

, The c 'terminal and the d' terminal of the LED lamp are connected to the second redundancy bridge rectifier circuit block of the LED lamp.

2 [a ', b'] terminals of one cap of the present invention are configured to be connected to the first redundant bridge rectifying circuit block from the beginning. In this way, 2 [c ', d' 2 redundant bridge rectifying circuit block to drive the LED lamp with electric energy supplied from the fluorescent ballast [A] through the a 'terminal or the b' terminal and the c 'terminal or the d' terminal. However, in such a configuration, a current does not flow through the resonant capacitor [C] in the fluorescent ballast [A], so that a capacitor capable of serving as a resonant capacitor must be mounted on the outside. In the conventional LED lamp, There are four capacitors [C _RES1 , C _RES2 , C _RES3 , C _RES4 ] between the caps. In the present invention, in FIG. 4, the two resonance auxiliary capacitors C1 and C2 formed in the first redundancy bridge rectifying circuit block serve to stably resonate the fluorescent lamp ballast. As shown in Fig. 4 (1), a redundant bridge rectifier circuit block is constructed and used in the present invention because, when a general bridge rectifier circuit block is used as shown in Fig. 5, any one of the bridge rectifier diodes If a short circuit occurs, the output of the fluorescent ballast is short-circuited and there is a risk of fire due to overcurrent.

When the redundant bridge rectifier circuit is constructed and used as in the present invention, even if a failure occurs in which one of the diodes is short-circuited, the fluorescent ballast output terminal operates normally without being influenced. In the case of a product using normal commercial power supply, if a failure occurs in which one of the bridge rectifier diodes is short-circuited, the fuse is opened because the power is an infinite power source. However, a fluorescent lamp compatible with the fluorescent lamp Type LED lamp, the fuse is not opened. In the fluorescent lamp replacement type LED lamp of the present invention, the electric signals supplied through the a 'or b' terminal and the c 'or d' terminal from the fluorescent lamp ballast are D ₁ , D ₁₁ , D ₂ , D ₂₁ and D ₃ , D ₃₁ , D ₄ , D ₄₁ The bridge rectification is performed by a second redundant bridge rectifying circuit block composed of the first redundant bridge rectifying circuit block and D ₅ , D ₅₁ , D ₆ , D ₆₁ , D ₇ , D ₇₁ , D ₈ and D ₈₁ to form an LED matrix array [B ₂ ] To drive the LED lamp. In the fluorescent lamp replacement type LED lamp of the present invention, in FIG. 4, the voltage of the bridge rectified (+) terminal is supplied to the LED matrix array [B ₂ ] through the CN ₂ terminal and is supplied through the first coil [L ₁ ] Is supplied to the switching element incorporated in the high-frequency oscillation and current control IC [U ₁ ] of block [3], which repeats the ON [ON] and [OFF] operations at a frequency of about 50 kHz, The energy stored in the first coil of the energy charging and discharging circuit block 4 is supplied to the LED matrix array B ₂ through the twelfth diode D ₁₂ in off time so as to maintain a constant current The flickering of the LED lamp is also removed.

Wherein U ₁ is so that the LED matrix array [B2], the constant current to flow, because the control current in such a manner as to open when the current value is more than the reference current value by detecting the LED current through the resistance R _CS. However, if the LED current exceeds the specified value due to the occurrence of abnormal phenomenon or aging of other parts, the overcurrent shut-off circuit block [5] operates to turn off the switching device built in U ₁ . When the normal greater than 30% of the reference current is set in the U ₁ in the over-current blocking circuit block [5] a judgment of over-current. This comparator for overcurrent blocking through the twelfth resistor [R _12] Resistance after integration of the voltage detected in the resistance for the current detecting [R _CS] in a seventh resistance [R _7] and the eighth capacitor [C _8] [U ₁ ] terminal of the comparator U _{2 when} the second terminal voltage of the comparator U ₂ becomes higher than the reference voltage applied to the third [+] terminal by the second [-] terminal of the comparator U ₂ , The switching element built in the U ₂ is turned off by applying a low voltage to the gate terminal of the switching element incorporated in the U ₂ through the tenth diode D ₁₀ , ] To block the overcurrent.

The tenth capacitor [C ₁₀ ] connected in parallel with the first resistor [R ₁ ] in FIG. 4 and the third capacitor [C ₃ ] connected in parallel with the second resistor are connected in series to the relay [RY ₁ ] . The current flowing through the relay coil during the initial start-up flows through the first resistor and the second resistor and also flows through the tenth capacitor [C ₁₀ ] and the third capacitor [C ₃ ]. When the capacitor is charged once, the relay coil current flows only through the resistance [R1, R2] resistance. In this case, the relay keeps ON even if only 50% of the start current flows.

It has three resistors [R ₁ , R ₂ , R ₃ ], two capacitors [C ₃ , C ₁₀ ], two zener diodes [Z _D1 and Z _D2 ], one trandizer [Q1] The operation principle of the current limiting relay drive circuit block composed of the relay [RY ₁ ] will be described. If the rated current of the relay coil is 8mA and the rated voltage is 24V, the resistance value of the relay coil is 3kΩ. 4,

Zener voltage of Z _D1 = V _ZD1 = 24V

Resistance value of R ₂ = r ₂ = 3 _kΩ

Assuming that the current flowing through the second resistor through the emitter terminal of the first transistor [Q ₁ ] is ir ₂

The result is that the current flowing through the coil of the relay [RY ₁ ], which is connected to the collector terminal of the transistor [Q ₁ ], is kept constant at about 7.77 mA. This is kept constant regardless of the variation of the bridge rectifier (+) terminal voltage. In the fluorescent lamp replacement type LED lamp of the present invention, the driving power of the high frequency oscillation and current control IC [U ₁ ] of the LED array control circuit block [3] is supplied from the current limiting relay driving circuit block [2] Speaking of a rated voltage of 12V _DC U ₁ and la, the rated current of 3mA, the second zener diode _[D2 Z] Zener voltage in FIG. 4 is a 12V _DC assuming a zener diode. In this case, 3mA of the 7.77 mA current flowing through the relay coil flows to the power input terminal of the U ₁ , and about 1 mA of the remaining 4.77 mA flows to the power input terminal of the overcurrent shutoff comparator U _2, And consumes itself at the second Zener diode [Z _D2 ]. In this way, in the fluorescent lamp replacement type LED lamp of the present invention, the relay coil driving current is used as driving power for the LED array control circuit block [3] and the overcurrent shutoff circuit block [5].

Claims (6)

An LED lamp used in connection with an electronic fluorescent ballast is a fluorescent lamp replacement type including a LED lamp driving device [B1] and an LED matrix array [B2] and including four terminals externally exposed to two terminals in one cap D ₁ , D ₁₁ , D ₂ , D ₂₁ , D ₃ , D ₃₁ , D ₄ , and D ₄₁ are the power supplied to the two terminals [a ', b'] of any one of the four terminals first redundancy bridge rectifier circuit block [1.1] to the bridge, the rectifier, and two-terminal [c ', d'] of the other _{cap, D 5, D 51, D} 6, D 61, D 7, D 71 is configured to, D _8, D ₈₁ second redundancy bridge rectifier circuit block [1.2] and the second circuit, but the configuration of C-type relay [RY], normal [when no current flows in the second circuit C type relay coil] is, the c consisting of Terminal is short-circuited through the contact terminal of the two-circuit type C-type relay, and is electrically disconnected completely from the second redundant bridge rectifying circuit block [1.2] Type relay coil, the c 'terminal and the d' terminal are separated from each other, and the c 'terminal is connected to the second redundancy circuit through the contact of the two-circuit type C relay when the current flows through the two- connected to the cathode terminal of the anode terminal of the bridge rectifier D ₅ constituting the block and D ₈ and the d 'terminals are configured to be connected to a cathode terminal of the anode terminal of the D ₆ D ₇
Fluorescent lamp replacement LED lamp. In an LED lamp driving apparatus incorporated in a fluorescent lamp substitute LED lamp including a total of four terminals exposed to the outside by two terminals in one cap, the LED lamp driving apparatus connected to the electronic fluorescent ballast The first redundant bridge rectifying circuit block composed of D ₁ , D ₁₁ , D ₂ , D ₂₁ , D ₃ , D ₃₁ , D ₄ , and D ₄₁ supplies the power supplied to the two terminals [a ', b' [1.1] a bridge rectifier, and the second terminal of the other cap [c ', d'] _{include, D 5, D 51, D} 6, D 61, D 7, D 71, D 8, the second consisting of D ₈₁ Type relay coil, the c'-terminal and the d'-terminal are connected to the second 2-phase relay circuit [1.2] and the second circuit C-type relay [RY] Is short-circuited through the contact terminal of the circuit C type relay and is completely separated (isolated) from the second redundancy bridge rectifying circuit block [1.2] When the current flows through the C-type relay coil, the c 'terminal and the d' terminal are separated from each other, and the c 'terminal is connected to the second redundant bridge rectifier circuit block through the contact of the two- connected to the D ₅ of the anode terminal and the cathode terminal of the D ₈ which is the d 'terminals are configured to be connected to a cathode terminal of the anode terminal of the D ₆ D ₇
Fluorescent lamp replacement type LED lamp driving device. 3. The method of claim 2,
The [1] terminal of the two-circuit C-type relay [RY1] coil is connected to the first resistor [R ₁ ] through the first resistor [R ₁ ] Is connected to the (+) output terminal of the first redundant bridge rectifying circuit block [1.1] and the other terminal [10] of the relay coil is connected to the collector terminal of the transter [Q ₁ ] emitter terminal of the second resistance [R _2] a first zener diode [ZD _1] of the base terminal of the first Zener diode configured to connect to the anode terminal, and the tran register [Q _1] through [ZD _1] cathode And the cathode terminal of the first zener diode ZD ₁ is connected to the (+) output terminal of the first redundancy bridge rectifying circuit block [1.1] through a third resistor R ₃ The anode terminal of the first zener diode is again connected to the second zener diode ZD ₂ , And the anode terminal of the second Zener diode ZD ₂ is connected to the ground terminal
Fluorescent lamp replacement type LED lamp driving device. 3. The method of claim 2,
D11, D2, D3, D4, D5, D6, D7 and D8 of the first redundant bridge rectifying circuit block [1.1] and the second redundant bridge rectifying circuit block [1.2] Further comprising a first redundancy bridge rectification circuit block [1.1] and a second redundancy bridge rectification circuit block [1.2] which are formed by adding the first redundancy bridge rectification circuit block [D21, D31, D41, D51, D61, D71, D81]
Fluorescent lamp replacement type LED lamp driving device. The method of claim 3,
A third capacitor [C ₃ ] is connected in parallel to both ends of a second resistor [R ₂ ] connected to the emitter terminal of the trandizer [Q ₁ ], and a tenth capacitor [C ₁₀ ] Connected in parallel,
Fluorescent lamp replacement type LED lamp driving device. 3. The method of claim 2,
The voltage detected in the LED current detection resistor Rcs is connected to the second (-) terminal of the overcurrent shutoff comparator U ₂ through the integrating circuit composed of R ₇ and C ₈ and the twelfth resistor R ₁₂ configured to, LED after the current is configured and if it exceeds a predetermined value, the output [1] terminal of the comparator [U _2] to output a Low the output of the [U _2] [terminal # 1] 10 diode [D ₁₀ - a through by applying to the gate of the switching device built-in LED array control circuit block to the [3] the high-frequency oscillation and the current control IC [U _1] of when the LED current exceeds a predetermined value to turn OFF the switching elements incorporated in the U ₁ Method to block LED over current
Fluorescent lamp replacement type LED lamp driving device.

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