CN211526112U

CN211526112U - LED bulb with dimming function

Info

Publication number: CN211526112U
Application number: CN201922481067.2U
Authority: CN
Inventors: 罗维大; 陈宝; 吴秀国
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-09-18
Anticipated expiration: 2029-12-31

Abstract

The utility model relates to a LED lighting apparatus technical field especially relates to a from LED bulb of taking function of adjusting luminance, including the lamp shade, the lamp shade bottom is connected with the lamp holder, be provided with the LED filament in the lamp shade, the inside dimming circuit module that is provided with of lamp holder, dimming circuit module include AC rectifier module, power-off circuit module and adjust luminance the chip, and external power source can be connected to AC rectifier module, and external power source can pass through switch-on power-off circuit module and LED filament after AC rectifier module rectification, the output electric connection of power-off circuit module adjust luminance the chip, adjust luminance the chip and transmit the outage signal to the light-off chip, adjust luminance the output electric connection of chip the LED filament, through the luminance of the current value control LED filament of. The utility model relates to a from LED bulb of taking the function of adjusting luminance can let the LED bulb from taking the function of adjusting luminance, and it is more convenient to use.

Description

LED bulb with dimming function

Technical Field

The utility model relates to a LED lighting apparatus technical field especially relates to a from LED bulb of taking function of adjusting luminance.

Background

The existing LED bulb does not have the dimming function, when the LED bulb needs to be dimmed, the dimming function can be realized only by additionally connecting a dimming box, and the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model discloses a from LED bulb of taking dimming function can let the LED bulb from taking dimming function, and it is more convenient to use.

In order to solve the technical problem, the utility model discloses a technical scheme is:

the utility model provides a from LED bulb of taking dimming function, includes the lamp shade, and the lamp shade bottom is connected with the lamp holder, be provided with the LED filament in the lamp shade, the inside dimming circuit module that is provided with of lamp holder, dimming circuit module include AC rectifier module, outage circuit module and the chip of adjusting luminance, and AC rectifier module can connect external power supply, and external power supply can pass through switch-on outage circuit module and LED filament after the AC rectifier module rectification, the output electric connection of outage circuit module the chip of adjusting luminance transmits the outage signal to the chip of adjusting luminance, the output electric connection of the chip of adjusting luminance the luminance of LED filament through the current value control LED filament of output.

The utility model discloses an among the dimming circuit module, during the LED bulb switch on, external power supply is the power-off circuit module after AC rectifier module rectification, chip and the LED filament power supply of adjusting luminance, because the output electric connection of power-off circuit module adjusts luminance the chip, therefore the power-off circuit module can close through external power supply opens and triggers the chip of adjusting luminance, let the chip of adjusting luminance switch over the current value to LED filament output after next reenergization, thereby utilize the break-make electricity of switch every time to switch over the luminance of LED filament in proper order, thereby realize adjusting luminance to the multistage of LED filament.

And because the dimming circuit module is arranged inside the lamp holder, the dimming function can be realized without additionally connecting a dimming box, the LED bulb can have the dimming function, and the use is more convenient.

Furthermore, the model of the dimming chip is an SM2213 chip, and the dimming chip is an LED constant current driving chip capable of dimming in three sections. The SM2213 chip is an LED constant current driving chip commonly used for three-stage brightness adjustment in the prior art, and in the application of the SM2213 chip in three-stage brightness adjustment, the output current can be sequentially changed according to the turning on and off of a power switch, so that the brightness of an LED filament is changed, and the adjustment proportion can be adjusted through an external resistor. Therefore, the power-off circuit module can trigger the SM2213 chip by turning on and off the external power supply, so that the SM2213 chip switches the current value output to the LED filament after next re-energization, the brightness of the LED filament can be sequentially switched, and three-section dimming of the LED bulb is realized.

Furthermore, the AC rectification module includes a rectifier bridge DB1 composed of four diodes, the rectifier bridge DB1 is externally connected to an external power supply through two AC voltage input terminal pins, and a dc output negative terminal pin of the rectifier bridge DB1 is grounded, and a connection circuit between the rectifier bridge DB1 and the external power supply is provided with a fuse F1; a direct current output positive electrode pin of the rectifier bridge DB1 is connected with a positive electrode LED + of the LED filament, and a diode D3 is arranged between the direct current output positive electrode pin of the rectifier bridge DB1 and the positive electrode LED + of the LED filament; the power-off circuit module comprises a resistor R1, a resistor R2 and a capacitor C1, wherein the resistor R1 is connected with the resistor R2 in series, a direct current output positive pin of the rectifier bridge DB1 is connected with the resistor R1, the resistor R2 is connected with an 8 pin of the dimming chip, one end of the capacitor C1 is grounded, and the other end of the capacitor C1 is connected with a 1 pin of the dimming chip; the

pins

2, 3 and 4 of the dimming chip are grounded, and the

pins

5 and 6 of the output end of the dimming chip are electrically connected with the negative electrode LED-of the LED filament, and the brightness of the LED filament is controlled by the current value output by the negative electrode LED-of the LED filament.

Further, the stroboscopic removing capacitor C1 is further included, the stroboscopic removing capacitor C1 is connected with the resistor R5 in parallel, one end of the stroboscopic removing capacitor C1 is grounded, and the other end of the stroboscopic removing capacitor C1 is connected with the anode LED + of the LED filament.

Furthermore, a first power supply connecting end and a second power supply connecting end which can be connected with an external power supply are arranged on the lamp holder, and a power supply input end of the AC rectifying module is electrically connected with the first power supply connecting end and the second power supply connecting end respectively. Therefore, the external power supply can provide power for the power-off detection module as long as the first power supply connecting end and the second power supply connecting end on the lamp holder are connected from the outside.

Further, the periphery integrated into one piece of lamp holder has the screw thread mounting groove, first power connection end sets up the bottom at the lamp holder, second power connection end sets up the upside at the screw thread mounting groove. The screw thread mounting groove can be convenient for the lamp holder cooperation to be installed in corresponding lamp stand to threaded connection is more firm, and the lamp holder passes through the screw thread mounting groove to be installed behind the lamp stand, as long as from the first power connection end of bottom switch-on, from upside switch-on second power connection end, alright in order to switch on external power source outward.

Furthermore, a fixing column is arranged in the lampshade, and a connecting lead between the LED lamp filament and the dimming circuit module penetrates through the fixing column and is fixed in the fixing column. Thus facilitating the fixation of the LED filament.

Further, the LED filament is rectangular form, and the quantity of LED filament is a plurality of and encircles the periphery that distributes at the fixed column. So that the bright light can be uniformly emitted to the outside.

The utility model has the advantages that:

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a partial sectional view of the present invention.

Fig. 3 is a circuit module control diagram of the present invention.

Fig. 4 is a schematic diagram of the circuit diagram of the present invention.

Fig. 5 is a circuit diagram of the present invention.

Detailed Description

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and schematic or simplified schematic drawings only, not for the purpose of limiting the same, and not for the purpose of limiting the same; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "vertical", "horizontal", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, the description is merely for convenience and simplicity of description, and it is not intended to indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, the terms describing the positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

Furthermore, if terms such as "first," "second," etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, it will be apparent to those of ordinary skill in the art that the specific meanings of the above terms may be understood according to particular circumstances.

As shown in fig. 1-2, an LED bulb with a dimming function includes a lampshade 100, a base 200 is connected to the bottom of the lampshade 100, an LED filament 300 is provided in the lampshade 100, and a dimming circuit module 400 is provided inside the base 200.

As shown in fig. 2 to 4, the dimming circuit module 400 includes an AC rectifying module 600, a power-off circuit module 500 and a dimming chip 900, the AC rectifying module 600 can be connected to an external power supply, the external power supply can pass through the AC rectifying module 600 after rectification, the power-off circuit module 500 and the LED filament 300 are switched on, the output end of the power-off circuit module 500 is electrically connected to the dimming chip 900, the dimming chip 900 transmits a power-off signal, the output end of the dimming chip 900 is electrically connected to the LED filament 300, and the brightness of the LED filament 300 is controlled by the output current value.

As shown in fig. 3 to 5, the AC rectifying module 600 includes a rectifying bridge DB1 formed by four diodes, the rectifying bridge DB1 is externally connected to an external power supply through two AC voltage input terminals, a dc output negative terminal of the rectifying bridge DB1 is grounded, and a circuit connecting the rectifying bridge DB1 and the external power supply is provided with a fuse F1; a direct current output positive electrode pin of the rectifier bridge DB1 is connected with a positive electrode LED + of the LED filament 300, and a diode D3 is arranged between the direct current output positive electrode pin of the rectifier bridge DB1 and the positive electrode LED + of the LED filament 300; the power-off circuit module 500 comprises a resistor R1, a resistor R2 and a capacitor C1, wherein the resistor R1 is connected in series with the resistor R2, a direct-current output positive pin of the rectifier bridge DB1 is connected with the resistor R1, the resistor R2 is connected with an 8 pin of the dimming chip 900, one end of the capacitor C1 is grounded, and the other end of the capacitor C1 is connected with a 1 pin of the dimming chip 900; the

pins

2, 3 and 4 of the light-adjusting chip 900 are grounded, and the

pins

5 and 6 of the output end of the light-adjusting chip 900 are electrically connected with the cathode LED-of the LED filament 300 together, so that the brightness of the LED filament 300 is controlled by the current value output by the cathode LED-of the LED filament 300. The LED filament lamp also comprises a stroboscopic removing capacitor C1, wherein the stroboscopic removing capacitor C1 is connected with a resistor R5 in parallel, one end of the stroboscopic removing capacitor C1 is grounded, and the other end of the stroboscopic removing capacitor C1 is connected with the anode LED + of the LED filament 300.

When the LED light bulb is powered on, the external power supply is rectified by the AC rectifying module 600 to supply power to the power-off circuit module 500, the dimming chip 900 and the LED filament 300. The model of the dimming chip 900 is an SM2213 chip, which is an LED constant current driving chip capable of three-stage dimming. The SM2213 chip is an LED constant current driving chip commonly used for three-stage brightness adjustment in the prior art, and in the application of the SM2213 chip in three-stage brightness adjustment, the power switch can be turned on and off, the magnitude of output current can be sequentially changed, and therefore the brightness of the LED filament 300 is changed. Therefore, the power-off circuit module 500 can switch off and trigger the SM2213 chip by turning on the external power supply, so that the SM2213 chip switches the current value output to the LED filament 300 after next re-energization, and the brightness of the LED filament 300 is sequentially switched by switching on and off the switch each time, thereby realizing three-stage dimming of the LED bulb.

In addition, since the dimming circuit module 400 is disposed inside the lamp cap 200, the dimming function can be realized without additionally connecting a dimming box, and the LED bulb can have the dimming function, so that the use is more convenient.

It should be noted that, this embodiment can also realize the mode of adjusting luminance of more sections positions such as two sections, four sections, five sections, six sections through changing other LED constant current driver chips that are used for adjusting luminance, and this kind of simple transform all belongs to the utility model discloses a protection scope.

As a further supplement and improvement to this embodiment, as shown in fig. 1, the lamp cap 200 is provided with a first power connection terminal 201 and a second power connection terminal 202 capable of connecting an external power source, and the power input terminals of the AC rectifying module 600 are electrically connected to the first power connection terminal 201 and the second power connection terminal 202, respectively. Therefore, the external power supply can supply power to the power-off detection module as long as the first power supply connection terminal 201 and the second power supply connection terminal 202 on the lamp holder are connected from the outside.

As a further supplement and improvement to this embodiment, as shown in fig. 1, a screw mounting groove 203 is integrally formed at the outer circumference of the base 200, a first power connection terminal 201 is provided at the bottom end of the base 200, and a second power connection terminal 202 is provided at the upper side of the screw mounting groove 203. The screw thread mounting groove 203 can be convenient for the cooperation of lamp holder 200 to install in corresponding lamp stand to threaded connection is more firm, and the lamp holder passes through screw thread mounting groove 203 to be installed behind the lamp stand, as long as from the first power connection end 201 of bottom switch-on, from upside switch-on second power connection end 202, alright in order to externally switch on external power source.

As a further supplement and improvement to this embodiment, as shown in fig. 1, a fixing post 101 is disposed in the lampshade 100, and a connecting wire between the LED filament 300 and the dimming circuit module 400 passes through the fixing post 101 and is fixed in the fixing post 101. Thus facilitating the fixation of the LED filament.

As a further supplement and improvement to this embodiment, as shown in fig. 1, the LED filament 300 is long, and the number of the LED filaments 300 is several and is distributed around the outer periphery of the fixing column 101. So that the bright light can be uniformly emitted to the outside.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An LED bulb with a dimming function is characterized by comprising a lampshade (100), the bottom of the lampshade (100) is connected with a lamp cap (200), the LED lamp is characterized in that an LED filament (300) is arranged in the lampshade (100), a dimming circuit module (400) is arranged in the lamp holder (200), the dimming circuit module (400) comprises an AC rectifying module (600), a power-off circuit module (500) and a dimming chip (900), the AC rectifying module (600) can be connected with an external power supply, the external power supply can be connected with the power-off circuit module (500) and the LED filament (300) after being rectified by the AC rectifying module (600), the output end of the power-off circuit module (500) is electrically connected with the dimming chip (900), the dimming chip (900) transmits a power-off signal, the output end of the dimming chip (900) is electrically connected with the LED filament (300), and the brightness of the LED filament (300) is controlled through the output current value.

2. The LED bulb with the dimming function according to claim 1, wherein the dimming chip (900) is an SM2213 chip, and is an LED constant current driving chip capable of three-stage dimming.

3. The LED light bulb with the dimming function of claim 2, wherein the AC rectifying module (600) comprises four diodes to form a rectifying bridge DB1, the rectifying bridge DB1 can be connected to an external power source through two AC voltage input terminals, the dc output negative terminal of the rectifying bridge DB1 is connected to ground, and a fuse F1 is disposed on a connection circuit of the rectifying bridge DB1 and the external power source; a direct current output positive electrode pin of the rectifier bridge DB1 is connected with a positive electrode LED + of the LED filament (300), and a diode D3 is arranged between the direct current output positive electrode pin of the rectifier bridge DB1 and the positive electrode LED + of the LED filament (300); the power-off circuit module (500) comprises a resistor R1, a resistor R2 and a capacitor C1, wherein the resistor R1 is connected with the resistor R2 in series, a direct current output positive pin of the rectifier bridge DB1 is connected with the resistor R1, the resistor R2 is connected with an 8 pin of the dimming chip (900), one end of the capacitor C1 is grounded, and the other end of the capacitor C1 is connected with a 1 pin of the dimming chip (900); 2, 3, 4 pins ground connection of chip (900) of adjusting luminance, the common electric connection of output 5, 6 pins of chip (900) of adjusting luminance the negative pole LED-of LED filament (300), through the current value control LED filament (300) to LED filament (300) negative pole LED-output.

4. The LED bulb with the dimming function according to claim 3, further comprising a stroboscopic removing capacitor C1, wherein the stroboscopic removing capacitor C1 is connected with a resistor R5 in parallel, one end of the stroboscopic removing capacitor C1 is connected to ground, and the other end is connected with a positive LED + of the LED filament (300).

5. The LED bulb with the dimming function according to claim 1, wherein the lamp cap (200) is provided with a first power connection terminal (201) and a second power connection terminal (202) for connecting an external power source, and the power input terminals of the AC rectifying module (600) are electrically connected to the first power connection terminal (201) and the second power connection terminal (202), respectively.

6. The LED bulb with the dimming function according to claim 5, wherein a thread mounting groove (203) is integrally formed on the outer periphery of the base (200), the first power connection terminal (201) is disposed at the bottom end of the base (200), and the second power connection terminal (202) is disposed at the upper side of the thread mounting groove (203).

7. The LED bulb with the dimming function according to claim 1, wherein a fixing post (101) is arranged in the lampshade (100), and a connecting lead between the LED filament (300) and the dimming circuit module (400) penetrates through the fixing post (101) and is fixed in the fixing post (101).

8. The LED bulb with the dimming function according to claim 1, wherein the LED filament (300) is long, the number of the LED filaments (300) is several, and the LED filaments are distributed around the periphery of the fixing column (101).