TWI759919B - Light-emitting device and bulb with the same - Google Patents

Abstract

A light-emitting device and a bulb with the light-emitting device are provided to solve the problem that a transformer of a prior light-emitting device is easily damaged. The light-emitting device includes: a power supply unit having a first electrode and a second electrode and outputting a current signal; an impedance unit having a first end and a second end; and a first light-emitting module forwardly coupled to the first electrode and reversely coupled to the first end; a second light-emitting module is forwardly coupled to the second electrode and reversely coupled to the first end; a third light-emitting module is reversely coupled to the first electrode and forwardly coupled to the second end; and a fourth light-emitting module is reversely coupled to the second electrode and forwardly coupled to the second end. The invention also discloses a bulb with the light-emitting device.

Description

Light-emitting device and light bulb having the same

The present invention relates to an electrical appliance, in particular to a light-emitting device that does not require an AC/DC transformer and a light bulb with the light-emitting device.

Please refer to FIG. 1 , which is a conventional light bulb 9 , the conventional light bulb 9 has a light-emitting portion 91 and a lamp socket 92 , the light-emitting portion 91 is mounted on the lamp socket 92 , and the light-emitting portion 91 has a light-emitting portion 91 . A lampshade 911 and a light-emitting unit 912 , the lampshade 911 is connected to the lamp socket 92 and covers the light-emitting unit 912 , and the light generated by the light-emitting unit 912 can penetrate through the lampshade 911 .

The light-emitting unit 912 used in the conventional light bulb 9 uses a DC power supply as the power source for its operation, but the general commercial power supply is an AC power supply. Therefore, the conventional light bulb 9 needs to be loaded with an AC/DC transformer to convert the AC power supply. Convert to DC power. When the power consumption of the light-emitting unit 912 and the output power of the AC/DC transformer do not match, the light-emitting unit 912 will reduce the current stability and cause the AC/DC transformer to be easily damaged. Moreover, the structure of the conventional light bulb 9 is due to the lampshade 911 The lamp socket 92 cannot be disassembled, so that the AC/DC transformer cannot be replaced. Once the AC/DC transformer is damaged, even if the light emitting unit 912 can still be used, the conventional light bulb 9 will be discarded, resulting in a waste of resources.

In view of this, the conventional light bulbs still need to be improved.

In order to solve the above problems, the purpose of the present invention is to provide a light-emitting device that does not need to load an AC/DC transformer, and can directly use an AC power source as an input source, which can improve the current stability and the service life of the light-emitting device.

Another object of the present invention is to provide a light-emitting device, which can improve the continuity of illumination.

Another object of the present invention is to provide a light-emitting device, which can further improve the stability of illumination.

Another object of the present invention is to provide a light-emitting device, which can improve the softness of the light source.

Another object of the present invention is to provide a light bulb with the light-emitting device, which can improve the convenience of disassembly and assembly.

The use of the quantifier "a" or "an" for the elements and components described throughout the present invention is only for convenience and provides a general meaning of the scope of the present invention; in the present invention, it should be construed as including one or at least one, and a single The concept of also includes the plural case unless it is obvious that it means otherwise.

Similar terms such as "combined", "combined" or "assembled" mentioned in the whole text of the present invention mainly include the components that can be separated without destroying the components after the connection, or the components can not be separated after being connected, which are common knowledge in the field. It can be selected according to the material of the components to be connected or the assembly requirements.

The light-emitting device of the present invention includes: a power supply unit having a first electrode and a second electrode, the first electrode and the second electrode outputting a current signal alternately; an impedance unit having a first end and a The second end, the impedance unit is a photoresistor; a first light emitting module is forward coupled to the first electrode and reversely coupled to the first end; a second light emitting module is forward coupled to the first end Two electrodes are reversely coupled and connected to the first end; a third light-emitting module is reversely coupled the first electrode is coupled and connected to the second end; a fourth light-emitting module is reversely coupled to the second electrode and forwardly coupled to the second end; and the current signal passes through each of the light-emitting When the direction of the module is switched between forward and reverse to change the voltage, the photoresistor reduces the resistance value and increases the current value passing through each of the light-emitting modules to maintain a stable lighting state.

The light-emitting device of the present invention includes: a power supply unit having a first electrode and a second electrode, the first electrode and the second electrode outputting a current signal alternately; an impedance unit having a first end and a The second end, the impedance unit is a persistent photoconductive material; a first light emitting module is forward coupled to the first electrode and reversely coupled to the first end; a second light emitting module is forward The second electrode is coupled and connected to the second electrode and the first end is reversely coupled; a third light-emitting module is reversely coupled to the first electrode and forwardly coupled to the second end; a fourth light-emitting module is reversely coupled connecting the second electrode and forward coupling to the second end; and when the current signal changes the voltage by switching the directions of the light emitting modules between forward and reverse, the persistent photoconductive material provides continuous The photocurrent is used to supplement the current value passing through each of the light-emitting modules, so as to maintain a stable light-emitting state.

The light bulb of the present invention includes: a base having a first combining circuit and a first combining part; a carrier disposed on the base and comprising a second combining part, the second combining part can be connected The first joint part; the light-emitting device according to any one of the foregoing, the light-emitting device is arranged on the carrier; and a lampshade is connected to the base.

Accordingly, the light-emitting device of the present invention can use the AC power source to emit light through the loop of the plurality of light-emitting modules, without the need for rectification through the AC-DC transformer, and through the photoresistor or the persistent photoconductive material. , it can reduce the stroboscopic phenomenon of light caused by the AC power supply, and has the effect of improving the stability of light. In addition, the light bulb with this light-emitting device does not need a transformer, which saves the cost of components, facilitates disassembly and assembly, and prolongs the service life. .

Wherein, the first light-emitting module, the second light-emitting module, the third light-emitting module and The fourth light-emitting module is integrated with light-emitting diodes. In this way, the brightness, heat dissipation efficiency and power can be adjusted, which has the effect of improving the luminous efficiency and concentrating the brightness.

Wherein, the above-mentioned light-emitting diode integration consists of several light-emitting diodes or organic light-emitting diodes in parallel or in series. In this way, the glare and light pollution generated by the light-emitting module can be reduced, which has the effect of improving the softness of the light source.

Wherein, the base further has a first combination circuit, the carrier further has a second combination circuit, and the first combination circuit can be coupled to the second combination circuit. In this way, the carrier and the base are in a detachable coupling relationship, which has the effect of convenient disassembly and assembly.

Wherein, the inside of the base further includes a heat sink, and the heat sink is located in the base. In this way, the heat storage condition of the light-emitting device can be reduced, and the temperature is kept constant.

Wherein, the base has a positive terminal and a negative terminal, and the positive terminal and the negative terminal can be coupled and connected to the first combined circuit and an external AC power supply. In this way, the light bulb can be installed on the traditional lamp socket, which has the functions of fixing the light bulb and energizing.

〔this invention〕

1: Lighting device

11: Power supply unit

111: The first electrode

112: Second electrode

12: Impedance unit

121: First End

122: Second End

13: The first light-emitting module

14: The second light-emitting module

15: The third light-emitting module

16: The fourth light-emitting module

2: Base

21: The first combined circuit

22: The first joint

23: Positive extreme

24: Negative extreme

25: Radiator

3: Carrier

31: Second combined circuit

32: The second joint

4: Lampshade

(accustomed)

9: Bulb

91: Light-emitting part

911: Lampshade

912: Light unit

92: lamp holder

[FIG. 1] A diagram of a conventional light-emitting bulb device.

[FIG. 2] A circuit configuration diagram of a preferred embodiment of the present invention.

[FIG. 3] An exploded perspective view of a preferred embodiment of the present invention.

[FIG. 4] A combined cross-sectional view of a preferred embodiment of the present invention.

[Fig. 5] A partial exploded view like Fig. 4.

In order to make the above and other objects, features and advantages of the present invention more apparent and comprehensible, the following The preferred embodiment of the present invention is given, and the accompanying drawings are described in detail as follows:

Please refer to FIG. 2, which is a preferred embodiment of the light-emitting device 1 of the present invention, which includes a power supply unit 11, an impedance unit 12, a first light-emitting module 13, a second light-emitting module 14, A third light-emitting module 15 and a fourth light-emitting module 16 . The first lighting module 13 , the second lighting module 14 , the third lighting module 15 and the fourth lighting module 16 are coupled to the power supply unit 11 and the impedance unit 12 , respectively.

The power supply unit 11 has a first electrode 111 and a second electrode 112. The first electrode 111 and the second electrode 112 output a current signal alternately, so that the current signal flows in the direction of the light-emitting device 1 in a forward and reverse direction with time. Variety. The power supply unit 11 can be electrically connected to an AC power source, so that the AC current is output through the first electrode 111 and the second electrode 112 to form the current signal.

The impedance unit 12 has a first end 121 and a second end 122. The impedance unit 12 can be a resistor, so that the impedance between the first end 121 and the second end 122 is connected to the circuit of the light emitting device 1 By dividing the voltage, the size of the current signal can be adjusted, which has the effect of stabilizing the light-emitting state. The impedance unit 12 can also be a photoresistor, so that the impedance unit 12 reduces resistance when illuminated. When the current signal changes direction to reduce the current value, the impedance unit 12 reduces the impedance to stabilize the light-emitting state. The impedance unit 12 may also be a material with persistent photoconductivity, such as amorphous indium gallium zinc oxide (a-IGZO), so that the impedance unit 12 generates a photocurrent when illuminated. When the current signal decreases, the photocurrent provided by the impedance unit 12 supplements the current value to stabilize the light-emitting state.

The first light emitting module 13 is forward coupled to the first electrode 111 and reversely coupled to the first end 121 , and the second light emitting module 14 is forward coupled to the second electrode 112 and reversely coupled to the first end 121, the third light-emitting module 15 is reversely coupled to the first electrode 111 and forwardly coupled to the second end 122, and the fourth light-emitting module 16 is reversely coupled to the second electrode 112 and forwardly coupled to the first electrode 112. Two ends 122, the first electrode 111 and the second electrode 112 can be alternated The current signal is output to the first light-emitting module 13 , the second light-emitting module 14 , the third light-emitting module 15 and the fourth light-emitting module 16 , when the current signal passes through the light-emitting modules in the forward direction 13 , 14 , 15 , 16 are in an on state, and the current signal is reversed to the above-mentioned light-emitting modules 13 , 14 , 15 , 16 in an off state.

The first light-emitting module 13 , the second light-emitting module 14 , the third light-emitting module 15 and the fourth light-emitting module 16 may be integrated with light-emitting diodes. Among them, the light-emitting diode integration can be composed of several light-emitting diodes or organic light-emitting diodes in parallel or in series, and the light-emitting diodes or organic light-emitting diodes can be adjusted according to the required brightness, heat dissipation efficiency and power. The number of bodies is not limited in the present invention. In addition, the organic light emitting diode can reduce glare and light pollution, and has the effect of improving the softness of the light source.

Specifically, when the power supply unit 11 outputs the current signal through the first electrode 111 of the light-emitting device 1, the first light-emitting module 13 and the fourth light-emitting module 16 are in the conductive state, and the second light-emitting module The module 14 and the third lighting module 15 are in the disconnected state, so that the power supply unit 11, the first lighting module 13, the impedance unit 12 and the fourth lighting module 16 form a closed loop; When the power supply unit 11 outputs the current signal through the second electrode 112 of the light emitting device 1, the second light emitting module 14 and the third light emitting module 15 are in the conducting state, and the first light emitting module 13 and the third light emitting module 15 are in the on state. The fourth light-emitting module 16 is in the disconnected state, so that the power supply unit 11 , the second light-emitting module 14 , the impedance unit 12 and the third light-emitting module 15 form another closed loop. Then, when the current signal repeatedly changes the flow direction with a fixed period, the two closed loops will be turned on in turn and emit light. Since the frequency of the general commercial power is 60 Hz, the power supply unit 11 is electrically connected to the commercial power so that the closed circuits are switched on and off 60 times per second, causing the light emitting modules 13 , 14 , 15 , 16 of the light emitting device 1 to flicker and emit light. , has the effect of applying alternating current directly to the daily light source.

Please refer to FIG. 3 , which is a preferred embodiment of the light bulb of the present invention, which includes the above-mentioned light-emitting device 1 , a base 2 , a carrier 3 and a lampshade 4 . The light-emitting device 1 is provided with In the carrier 3 , the carrier 3 is set on the base 2 , and the lampshade 4 is connected to the base 2 and covers the light-emitting device 1 and the carrier 3 .

The base 2 is coupled to an external AC power source, and can be set on an external lamp socket. The base 2 has a first combination circuit 21 which is coupled to the power supply unit 11 and the carrier 3 . The base 2 further has a first joint portion 22 for connecting the carrier 3 . The base 2 may have a positive terminal 23 and a negative terminal 24, and the positive terminal 23 and the negative terminal 24 are coupled to connect the first bonding circuit 21 and the external AC power source. In a preferred embodiment, the positive terminal 23 is located at the lower tip of the negative terminal 24, the negative terminal 24 is located on the outer surface of the cylinder above the positive terminal 23, and the negative terminal 22 can be threaded and detachable. Therefore, the positive terminal 21 and the negative terminal 22 have the functions of fixing the bulb and energizing. The base 2 may have a heat sink 25 inside, the heat sink 25 may be disposed under the first joint portion 22 , and the heat sink 25 may be made of a heat-conducting metal, which has the effect of improving heat dissipation efficiency.

The carrier 3 is connected to the light-emitting device 1 and the base 2 , and has a second connection circuit 31 , and the second connection circuit 31 can be coupled to the power supply unit 11 and the first connection circuit 21 . The carrier 3 further has a second coupling portion 32, which can be detachably coupled to the first coupling portion 22. In this embodiment, the first coupling portion 22 and the second coupling portion 32 are a slot. As for the post structure, the first coupling portion 22 and the second coupling portion 21 can be any conventional coupling method, which is not limited in the present invention. In a preferred embodiment, by separating the first bonding line 21 and the second bonding line 31, and separating the first bonding portion 22 and the second bonding portion 32, the base 2 and the carrier 3 can be achieve the separation effect.

Referring to Figures 4 and 5, the lampshade 4 is connected to the base 2 so that the light generated by the operation of the first light-emitting module 12 and the second light-emitting module 13 can penetrate through the lampshade 4. The system has the function of increasing the light source gathering.

Specifically, in the light bulb of the preferred embodiment, the base can be separated by separating the first bonding line 21 and the second bonding line 31, and separating the first bonding portion 22 and the second bonding portion 32. The effect of the base 2 and the carrier 3 is that once the light-emitting device 1 is unusable, the carrier 3 can be replaced by the aforementioned steps, which is convenient for disassembly and assembly.

To sum up, the light-emitting device of the present invention can use the AC power source to emit light through the circuit system of the plurality of light-emitting modules, without the need for rectification through the AC-DC transformer, and the impedance unit can reduce the amount of the AC power source. The resulting stroboscopic phenomenon of light has the effect of improving light stability. In addition, since the light bulb with the light-emitting device does not need a transformer, it has the effects of saving the cost of components, facilitating disassembly and assembly, and prolonging the service life.

Although the present invention has been disclosed by the above-mentioned preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various changes and modifications relative to the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the patent application attached hereto.

1: Lighting device

11: Power supply unit

111: The first electrode

112: Second electrode

12: Impedance unit

121: First End

122: Second End

13: The first light-emitting module

14: The second light-emitting module

15: The third light-emitting module

16: The fourth light-emitting module

Claims (8)

A light-emitting device, comprising: a power supply unit with a first electrode and a second electrode, the first electrode and the second electrode output a current signal alternately; an impedance unit with a first end and a second end, the impedance unit is a photoresistor; a first light-emitting module is forward coupled to the first electrode and reversely coupled to the first end; a second light-emitting module is forward coupled to the second electrode and reversely coupled to the first end; a third light-emitting module, reversely coupled to the first electrode and forwardly coupled to the second end; a fourth light-emitting module, reversely coupled to the second electrode and connected to the second electrode Forward coupling is connected to the second end; and when the current signal is switched between forward and reverse through the direction of each of the light-emitting modules to change the voltage, the photoresistor reduces the resistance value, and increases the resistance value of the photoresistor through the above-mentioned light-emitting modules current value to maintain a stable light-emitting state. A light-emitting device, comprising: a power supply unit with a first electrode and a second electrode, the first electrode and the second electrode output a current signal alternately; an impedance unit with a first end and a second The impedance unit is a persistent photoconductive material; a first light-emitting module is forward-coupled and connected to the first electrode and reverse-coupled to the first end; a second light-emitting module is forward-coupled and connected The second electrode is reversely coupled to the first end; a third light-emitting module is reversely coupled to the first electrode and forwardly coupled to the second end; a fourth light-emitting module is reversely coupled to the second end The second electrode is coupled and connected to the second end in a forward direction; and the current signal changes the electric current by switching the directions of the light-emitting modules between forward and reverse directions. When pressed, the persistent photoconductive material provides a persistent photocurrent, which supplements the current value passing through each of the light-emitting modules, so as to maintain a stable light-emitting state. The light-emitting device of claim 1 or 2, wherein the first light-emitting module, the second light-emitting module, the third light-emitting module and the fourth light-emitting module are integrated with light-emitting diodes. The light-emitting device of claim 3, wherein the light-emitting diode integration is composed of several light-emitting diodes or organic light-emitting diodes in parallel or in series. A light bulb, comprising: a base having a first combining circuit and a first combining part; a carrier, disposed on the base and comprising a second combining part, the second combining part is connected to the first combining part A joint; the light-emitting device as claimed in any one of claims 1 to 4, the light-emitting device is provided on the carrier; and a lampshade is connected to the base. The light bulb of claim 5, wherein the base further has a first bonding line, the carrier further has a second bonding line, and the first bonding line can be coupled to the second bonding line. According to the light bulb of claim 5, the base further includes a heat sink, and the heat sink is located in the base. According to the light bulb of claim 5, the base has a positive terminal and a negative terminal, and the positive terminal and the negative terminal can be coupled and connected to the first combined circuit and an external AC power source.

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