Flashing unit with good lighting effect, flashing bulb and LED lamp string

Abstract

The utility model discloses a flashing unit, a flash bulb and an LED lamp string with good lighting effect, the flashing unit comprises a rectification circuit formed by a diode D1, a diode D2, a diode D3 and a diode D4, a compensation circuit formed by a capacitor C1, and a flashing circuit formed by a control chip IC and an LED chip LED1, the compensation circuit is connected in parallel with two ends of the flashing circuit, and the LED chip LED1 is connected in parallel with the rectification circuit. Two ends of the flicker circuit are respectively used as a power supply contact L1 and a power supply contact L2, and the rectification circuit is connected between the power supply contact L1 and the power supply contact L2; according to the utility model, the rectification circuit is adopted to convert the lighting effect into direct current power supply, continuous and uninterrupted current supply is provided for the control chip, timing logic interruption is avoided, and the compensation circuit is arranged to stabilize ripple fluctuation of the rectified direct current, so that power supply output is more stable, and the situation that flashes are not bright due to unstable voltage is reduced; and the lighting effect of the flash bulb is improved.

Description

Technical Field

[0001] This utility model relates to a lighting fixture, and more particularly to an LED flashing bulb and a string of lights. Background Technology

[0002] LED strings powered by AC are widely used due to their simple maintenance and lower cost. For example, patent document CN105682296A discloses a reversible LED string where the AC-powered, constantly lit string uses alternating positive and negative branches. Each branch is energized only during the positive or negative half-wave of the AC power, while the other branch is de-energized during this period, ensuring that only one branch is active at any given time. Current LED flashing bulbs integrate control chips that use timing functions to achieve periodic brightness changes. These chips require continuous power during the LED off-state to maintain the timing logic, therefore they are only suitable for DC power. If directly connected to the aforementioned LED string, the control chip will fail due to power interruption during branch power-off periods, causing timing malfunctions or complete cessation of operation. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, this utility model provides a flashing unit, flashing bulb and LED light string with good lighting effect.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A flashing unit with good lighting effect includes a rectifier circuit composed of diodes D1, D2, D3, and D4, a compensation circuit composed of capacitor C1, and a flashing circuit composed of control chip IC and LED chip LED1. The compensation circuit is connected in parallel across the two ends of the flashing circuit. The two ends of the flashing circuit serve as power supply contacts L1 and L2, respectively. The rectifier circuit is connected between power supply contacts L1 and L2.

[0006] A flashing light with good lighting effect includes pin A, pin B, and brackets C and D. Diodes D1 and D3 are fixed on pins B and A, respectively, and are electrically connected to pins B and A. A control chip IC and an LED chip LED1 are fixed on bracket C. Diodes D2 and D4 are fixed on bracket D and are electrically connected to bracket D. A capacitor C1 is fixed between brackets C and D. The other end of diode D3 is electrically connected to bracket C via a wire. One end of the control chip IC is electrically connected to bracket C via a wire, and the other end is connected in series with the LED chip LED1. The other end of the LED chip LED1 is electrically connected to bracket D. The other ends of diodes D2 and D4 are electrically connected to pins B and A, respectively, via wires. The other end of diode D1 is electrically connected to bracket C via a wire. One end of capacitor C1 is electrically connected to bracket C, and the other end is electrically connected to bracket D.

[0007] Lenses are encapsulated on the outside of pins A and B, as well as brackets C and D. The lenses encapsulate the upper parts of brackets C and D, as well as pins A and B, while the lower ends of pins A and B extend out of the lenses.

[0008] A reflector cup is provided on the top of the bracket C, and the LED chip LED1 is installed inside the reflector cup.

[0009] An LED light string with good lighting effect, comprising a flashing unit with good lighting effect.

[0010] An LED light string with good lighting effect, comprising flashing bulbs with good lighting effect.

[0011] The LED string also includes a light group consisting of at least one set of LED beads connected in parallel in opposite directions. Several light groups are provided, including light group LED2, light group LED3, light group LED4, and light group LED5. The light groups LED2, LED3, LED4, and LED5 are connected in series and then connected to the flashing bulb.

[0012] The LED light string also includes a forward light string and a reverse light string. The forward light string is composed of several LED beads connected in forward series, and the reverse light string is composed of several LED beads connected in reverse series. The forward light string and the reverse light string are connected in parallel and then connected in series with the flash bulb.

[0013] The LED light string also includes several current-limiting resistors.

[0014] The beneficial effects of this utility model are: This utility model uses a rectifier circuit to convert AC power supply to DC power supply, providing a continuous current supply to the control chip, avoiding interruption of timing logic, and setting up a compensation circuit to smooth the ripple fluctuation of DC power after rectification, making the power supply output more stable, reducing the situation where the flashing bulb does not light up due to voltage instability, and improving the lighting effect of the flashing bulb. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is the circuit diagram of the flashing unit.

[0017] Figure 2 This is a schematic diagram of the structure of a flash bubble.

[0018] Figure 3 This is one of the embodiments of LED light strings.

[0019] Figure 4 This is the second embodiment of LED light string. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0021] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0022] Reference Figures 1 to 4 A flashing unit with good lighting effect includes a rectifier circuit composed of diodes D1, D2, D3, and D4, a compensation circuit composed of capacitor C1, and a flashing circuit composed of a control chip IC and an LED chip LED1. The compensation circuit is connected in parallel across the two ends of the flashing circuit, and the two ends of the flashing circuit serve as power supply contacts L1 and L2, respectively. The rectifier circuit is connected between power supply contacts L1 and L2. The rectifier circuit converts AC power to DC power, providing a continuous current supply to the control chip, avoiding interruption of timing logic. The compensation circuit also smooths out the ripple fluctuations of the rectified DC power, making the power supply output more stable, reducing the occurrence of flashing bulbs failing to light due to voltage instability, and improving the lighting effect of the flashing bulbs.

[0023] The applicant previously filed a patent application with application number 202520017589X. In that application, a diode D1 was used to form a reverse isolation circuit. During the positive half-wave of the AC current, current flows through diode D1, powering the LED chip LED5 to light it up, while simultaneously providing operating current to the control chip IC and charging capacitor C1. During the negative half-wave of the AC current, due to the cutoff effect of diode D1, current flows only through the bidirectional Zener diode Z1 and out through the AC contact L1. Capacitor C1 releases its charge to provide operating current to the control chip IC. When the capacitance of capacitor C1 is large enough, it can power both the control chip IC and the LED chip LED5 simultaneously. In the previous application, a capacitor was used to provide operating current to the control chip IC during the negative half-wave of the AC current, so a larger capacitance was required, resulting in a larger finished product. In this invention, the capacitor is used to filter out the DC ripple after rectification, so the capacitance does not need to be very large, allowing for a smaller finished product.

[0024] A flashing light with good lighting effect includes pin A, pin B, and brackets C and D. Diodes D1 and D3 are fixed to pins B and A respectively, and are electrically connected to pins B and A. A control chip IC and an LED chip LED1 are fixed to bracket C. The control chip IC can be connected to pin C by wire connection or direct soldering. Diodes D2 and D4 are fixed to bracket D and are electrically connected to bracket D. A capacitor C1 is fixed between brackets C and D. The other end of diode D3 is electrically connected to bracket C by a wire. One end of the control chip IC is electrically connected to bracket C by a wire, and the other end is connected in series with the LED chip LED1. It should be noted that... Some control chip ICs have multiple pins, such as a power supply terminal, a current input terminal that provides operating current to LED chip LED1, and a current output terminal. Here, one end and the other end of the control chip IC refer to the terminals that provide operating current to LED chip LED1, that is, the current input terminal and the current output terminal that provide operating current to LED chip LED1. The other end of LED chip LED1 is electrically connected to bracket D. The other ends of diodes D2 and D4 are electrically connected to pin B and pin A respectively through wires. The other end of diode D1 is electrically connected to bracket C through a wire. One end of capacitor C1 is electrically connected to bracket C, and the other end is electrically connected to bracket D. Capacitor C1 can be connected by wire or by direct soldering.

[0025] Lenses are encapsulated on the outside of pins A and B, as well as brackets C and D. The lenses encapsulate the upper parts of brackets C and D, as well as pins A and B, while the lower ends of pins A and B extend out of the lenses.

[0026] A reflector cup is provided on the top of the bracket C, and the LED chip LED1 is installed inside the reflector cup.

[0027] An LED light string with good lighting effect, comprising a flashing unit or a flashing bulb with good lighting effect.

[0028] Example 1, as Figure 3 As shown, the LED light string also includes light groups composed of at least one set of LED beads connected in parallel in both directions. Several light groups are provided, including light groups LED2, LED3, LED4, and LED5. These light groups are connected in series and then connected in series with the flashing bulb. Figure 3 and Figure 4 As shown, the ACF module is the aforementioned flash bubble.

[0029] Example 2, as Figure 4 As shown, the LED light string also includes a forward light string and a reverse light string. The forward light string is composed of several LED beads connected in forward series, and the reverse light string is composed of several LED beads connected in reverse series. The forward light string and the reverse light string are connected in parallel and then connected in series with the flash bulb.

[0030] In addition to the two methods mentioned above that connect the flashing units and the light group in series to form a light string that is both constantly lit and flashing, the light string can also be set up by connecting multiple flashing units in series to form a light string that only flashes.

[0031] The LED string also includes several current-limiting resistors. During the production of the LED string, different resistance values ​​of the current-limiting resistors can be set according to the number of LED strings connected in series to prevent excessive current flowing through the LED chip and causing it to burn out.

[0032] In this invention, the term "multiple" refers to two or more items unless otherwise expressly defined. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] It should be noted that when a component is referred to as being "assembled on," "mounted on," "fixed to," or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0034] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A sparkling unit with good lighting effect, characterized in that It includes a rectifier circuit composed of diode D1, diode D2, diode D3, diode D4, a compensation circuit composed of capacitor C1, and a flicker circuit composed of control chip IC and LED chip LED1, the compensation circuit is connected in parallel across the flicker circuit, the two ends of the flicker circuit are respectively as power supply contact L1 and power supply contact L2, and the rectifier circuit is connected between the power supply contact L1 and the power supply contact L2.

2. A flash bubble with good lighting effect, characterized in that It includes pin A, pin B, and bracket C and bracket D, the diode D1 and diode D3 are fixed on the pin B and pin A respectively, and the pin B and pin A form electrical connection respectively, the control chip IC and LED chip LED1 are fixed on the bracket C, the diode D2 and diode D4 are fixed on the bracket D and form electrical connection with the bracket D, and the capacitor C1 is fixed between the bracket C and bracket D; the other end of the diode D3 is electrically connected with the bracket C through a wire, one end of the control chip IC is electrically connected with the bracket C through a wire, and the other end is connected in series with the LED chip LED1, the other end of the LED chip LED1 is electrically connected with the bracket D, the other end of the diode D2 and diode D4 is electrically connected with the pin B and pin A respectively through a wire, the other end of the diode D1 is electrically connected with the bracket C through a wire, one end of the capacitor C1 is electrically connected with the bracket C, and the other end is electrically connected with the bracket D.

3. The flasher of claim 2, wherein A lens is packaged outside the pin A, pin B, and bracket C and bracket D, the lens packages the upper part of the bracket C and bracket D and the pin A and pin B inside, and the lower end of the pin A and pin B protrudes outside the lens.

4. The flasher of claim 2, wherein A reflective cup is arranged on the top of the bracket C, and the LED chip LED1 is installed in the reflective cup.

5. A LED light string with improved lighting effect, characterized in that The lighting effect good flashing unit as claimed in claim 1 is contained.

6. A LED light string with improved lighting effect, characterized in that The lighting effect good flashing bubble as claimed in any one of claims 2 to 5 is contained.

7. The LED light string of claim 6, wherein It also includes a lamp group composed of at least one group of forward and reverse parallel LED lamp beads, the lamp group is provided with several groups, including lamp group LED2, lamp group LED3, lamp group LED4, and lamp group LED5, and the lamp group LED2, lamp group LED3, lamp group LED4, and lamp group LED5 are connected in series after being connected in series.

8. The LED light string of claim 6, wherein It also includes a forward lamp string and a reverse lamp string, the forward lamp string is composed of several forward connected LED lamp beads, the reverse lamp string is composed of several reverse connected LED lamp beads, and the forward lamp string and the reverse lamp string are connected in parallel after being connected in series with the flashing bubble.

9. The LED light string of claim 7 or 8, wherein It also includes several current limiting resistors.

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