Patent Publication Number: US-2023134858-A1

Title: Lamp bulb with flowing type light effect

Description:
TECHNICAL FIELD 
     The present disclosure relates to the technical field of lamps, in particular, to a lamp bulb with a flowing type light effect. 
     BACKGROUND 
     Decorative lamps can be seen everywhere in daily life. When night comes, the colorful light emitted by various decorative lamps can strongly set off and decorate surrounding environments. Since the decorative lamps have such an effect, many manufacturers are trying to introduce more innovative and colorful decorative lamps. A meteor shower lamp is a common decorative lamp. The existing meteor shower lamp is generally a long strip lamp tube. Light-emitting diode (LED) lamp beads are arranged and plugged on an internal circuit board. The LED lamp beads are controlled to emit light in turn, so that the light is as bright, natural and smooth as a meteor shower passing by. 
     Chinese patent CN201120200233.8 discloses an LED meteor shower lamp, including a transparent lamp tube (1) and a base plate (2) arranged in the lamp tube (1). A plurality of LED lamps (3) are arranged on the base plate (2). Lamp bases (4) are arranged at both ends of the base plate (2), and three electrodes (5) respectively connected to a null wire, a live wire and a ground wire are arranged on the lamp bases (4). The meteor shower lamp disclosed in this patent is a long strip, usually having a length greater than 20 cm and directly integrated with packaged LED lamp beads. However, for such a large-sized lamp with a meteor shower light effect, due to a large number of lamp beads that need to be integrated, at least 10 or more LED lamp beads need to be mounted. The packaged LED lamp beads also have a large volume. Therefore, a large carrier area is required, making it impossible to reduce the volume of the existing lamp with a meteor shower light effect to a suitable size range of an ordinary lamp bulb. Furthermore, the production cost is also high if the packaged LED beads are used. In view of this, the inventor has made a new invention. 
     SUMMARY 
     For the shortcomings in the prior art, the present disclosure aims to provide a lamp bulb with a flowing type light effect, which features with small volume, convenience of use and low cost. 
     In order to achieve the above objective, the present disclosure provides a lamp bulb with a flowing type light effect, including a lamp base and a shell connected to the lamp base, and further including a stem assembly; the stem assembly is connected to an opening portion of the shell; the stem assembly includes a plastic seat, and a first metal supporting wire, a printed circuit board (PCB) light source panel and a second metal supporting wire which are electrically connected in sequence; the plastic seat is connected to the opening portion of the shell; the plastic seat is provided with at least two accommodating holes for the metal supporting wires to pass; at least one side surface of the PCB light source panel is provided with two light-emitting chip groups; a conductive pattern is printed on the PCB light source panel; the PCB light source panel is also provided with a first integrated circuit (IC) controller; the first IC controller is electrically connected with light-emitting chip groups through the conductive pattern and turn on and circulate the light-emitting chip groups in sequence; one end of the first metal supporting wire and one end of the second metal supporting wire are both electrically connected to the lamp base; and the other ends are electrically connected to the PCB light source panel through a top of the plastic seat. 
     Preferably, the PCB light source panel is provided with a second IC controller with voltage reduction and rectification effects. 
     Preferably, the first IC controller and the second IC controller are respectively arranged at two ends of the PCB light source panel; and the PCB light source panel is also provided with an external package layer used for covering the light-emitting chip groups and the IC controllers. 
     Further, the first metal supporting wire and the second metal supporting wire are both electrically connected to the first IC controller. 
     Much further, two ends of the PCB light source panel respectively extend to be provided with a first conductive pin and a second conductive pin; the first conductive pin is electrically connected with the first metal supporting wire; and the second conductive pin is electrically connected with the second metal supporting wire. 
     Further, the conductive pattern includes an inlet pattern and a backflow pattern; one end of the inlet pattern and one end of the backflow pattern are electrically connected to the light-emitting chip groups; and the other ends of the inlet pattern and the backflow pattern are electrically connected to the first IC controller. 
     Further, the light-emitting chip groups include a plurality of LED chips connected in series; and a distance between the plurality of LED chips is 0.1 mm to 2.0 mm. 
     Further, the PCB light source panel is a ceramic base plate or a PC base plate. 
     Preferably, the first metal supporting wire is connected with a resistor a; the second metal supporting wire is connected with a resistor b; and the resistor a and the resistor b are both arranged in the accommodating holes and are in close fit. 
     Preferably, the accommodating holes are blind holes pierced by the metal supporting wires. 
     Beneficial effects: Compared with the prior art, the present disclosure discloses a lamp bulb with a flowing type light effect. The lamp bulb includes a lamp base and a shell connected to the lamp base, and further includes a stem assembly; the stem assembly is connected to an opening portion of the shell; the stem assembly includes a plastic seat, and a first metal supporting wire, a PCB light source panel and a second metal supporting wire which are electrically connected in sequence; the plastic seat is connected to the opening portion of the shell; the plastic seat is provided with at least two accommodating holes for the metal supporting wires to pass; at least one side surface of the PCB light source panel is provided with two light-emitting chip groups; a conductive pattern is printed on the PCB light source panel; and the PCB light source panel is also provided with a first IC controller. The present disclosure has the following advantages: 1. A large number of light-emitting chips can be integrated to achieve diversified flickering effects, and the volume of the lamp bulb can also be effectively controlled to facilitate the use. 2. The application range is wide, so that lamp bulbs in different sizes can achieve a flowing type light effect. 3. The light-emitting chips have high integration degree and low manufacturing cost. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a schematic three-dimensional diagram of the present disclosure. 
         FIG.  2    is a schematic structural diagram of a stem assembly of the present disclosure. 
         FIG.  3    is a schematic structural diagram of a metal supporting wire of the present disclosure. 
         FIG.  4    is a schematic structural diagram of a PCB light source panel of the present disclosure; 
         FIG.  5    is a schematic structural diagram of an LED chip of the present disclosure. 
         FIG.  6    is a schematic structural diagram of a plastic seat of the present disclosure. 
     
    
    
     REFERENCE NUMERALS INCLUDE 
       1 : lamp base;  2 : shell;  3 : stem assembly;  31 : plastic seat;  311 : accommodating hole;  32 : first metal supporting wire;  321 : resistor a;  33 : PCB light source panel;  331 : light-emitting chip group;  332 : conductive pattern;  333 : inlet pattern;  334 : backflow pattern;  335 : LED chip;  34 : second metal supporting wire;  341 : resistor b;  35 : first IC controller;  36 : second IC controller;  37 : external package layer;  38 : first conductive pin; and  39 : second conductive pin. 
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     The present disclosure is described in detail below in combination of  FIG.  1   - FIG.  6   . 
     The present disclosure discloses a lamp bulb with a flowing type light effect, including a lamp base  1  and a shell  2  connected to the lamp base  1 , and further including a stem assembly  3 . The stem assembly  3  is connected to an opening portion of the shell  2 . The stem assembly  3  includes a plastic seat  31 , and a first metal supporting wire  32 , a PCB light source panel  33  and a second metal supporting wire  34  which are electrically connected in sequence. The plastic seat  31  is connected to the opening portion of the shell  2 . The plastic seat  31  is provided with at least two accommodating holes  311  for the metal supporting wires to pass. At least one side surface of the PCB light source panel  33  is provided with two light-emitting chip groups  331 . A conductive pattern  332  is printed on the PCB light source panel  33 . The PCB light source panel  33  is also provided with a first IC controller  35 . The first IC controller  35  is electrically connected with light-emitting chip groups  331  through the conductive pattern  332  and turn on and circulate the light-emitting chip groups  331  in sequence. One end of the first metal supporting wire  32  and one end of the second metal supporting wire  34  are both electrically connected to the lamp base  1 . The other ends are electrically connected to the PCB light source panel  33  through a top of the plastic seat  31 . 
     When the lamp bulb of the present disclosure is powered on for use, current flows through the first IC controller  35  via the first metal supporting wire  32 , and is then controlled to be transmitted to the plurality of light-emitting chip groups  331  in sequence by the first IC controller  35 , so that the light-emitting chip groups  331  are lightened or extinguished in turn along an arrangement direction to achieve a flowing type light effect. When the lamp bulb is not used, the current flows back through the second metal supporting wire  34 . Compared with a traditional long strip flowing type lamp tube, the present disclosure has the following advantages: 1. A large number of light-emitting chips can be integrated to achieve diversified flickering effects, and the volume of the lamp bulb can also be effectively controlled, thus avoiding an extremely large volume and facilitating the use. 2. The application range is wide, so that lamp bulbs in different sizes can achieve a flowing type light effect. 3. Compared with a packaged LED lamp bead finished product, the light-emitting chips have high integration degree and low manufacturing cost, and are more in line with the production idea of manufacturers. 
     In a further improved technical solution, the PCB light source panel  33  is provided with a second IC controller  36 . The second IC controller  36  is electrically connected with the light-emitting chip groups  331 . The second IC controller  36  is used for reducing a voltage of the light-emitting chip groups  331  to stabilize a voltage intensity, and also has a rectification effect to improve the stability of the overall lamp bulb and prolong the service life of the lamp bulb. 
     Preferably, in order to make the PCB light source panel  33  attractive, the first IC controller  35  and the second IC controller  36  are symmetrically arranged at two ends of the PCB light source panel  33  respectively. The PCB light source panel  33  is also provided with an external package layer  37  used for covering the light-emitting chip groups  331  and the IC controllers. The first IC controller  35  and the second IC controller  36  are symmetrically arranged at the two ends of the PCB light source panel  33 , which will not affect the light effect of the lamp bulb, either. In another aspect, by the external package layer  37 , the conductive pattern  332  between the light-emitting chip groups  331  and the IC controllers will not be damaged easily in an assembling process, so that the production cost is reduced. During coating of the external package layer  37 , only the light-emitting chip groups  331  can be packaged. A material of the external package layer  37  is epoxy resin, polyurethane modified epoxy resin or polyurethane resin. These materials have the advantages of high-temperature resistance, good toughness, no pungent smell, and the like. 
     In the present disclosure, the first metal supporting wire  32  and the second metal supporting wire  34  are both electrically connected to the first IC controller  35 . The first IC controller  35  is a control switch for multiple light-emitting chip groups  331 . When the first IC controller  35  is a composite controller, that is, when it has backflow and power storage functions, the first IC controller  35  is electrically connected to the first metal supporting wire  32  serving as an anode, and anode current is input into the first IC controller  35 . The first IC controller  35  transmits the current into the multiple light-emitting chip groups  331  and controls the light-emitting chip groups to achieve a flowing type light effect. After use, the current flows back via the second metal supporting wire  34 . When the first IC controller  35  is only a drive controller, that is, when the first IC controller is internally provided with a programmed light-emitting chip and does not have a power storage function, the first metal supporting wire  32  constantly inputs anode current to the first IC controller  35 , and the current flows through the light-emitting chip groups  331  and then flows back via the second metal supporting wire  34 . 
     Preferably, two ends of the PCB light source panel  33  respectively extend to be provided with a first conductive pin  38  and a second conductive pin  39 . The first conductive pin  38  is electrically connected with the first metal supporting wire  32 . The second conductive pin  39  is electrically connected with the second metal supporting wire  34 . The first conductive pin  38  and the second conductive pin  39  respectively extend and protrude from the two ends of the PCB light source panel  33 , which is convenient for automatic equipment to weld the PCB light source panel  33  with the metal supporting wires, so that the assembling forming efficiency of the lamp bulb is further improved, and the production efficiency is improved. 
     In one embodiment, the conductive pattern  332  includes an inlet pattern  333  and a backflow pattern  334 . The light-emitting chip groups  331  are provided with anodes and cathodes. One end of the inlet pattern  333  and one end of the backflow pattern  334  are electrically connected to the anodes and the cathodes of the light-emitting chip groups  331 , and the other ends of the inlet pattern  333  and the backflow pattern  334  are electrically connected to the first IC controller  35 . The conductive pattern  332  of the light-emitting chip group  331  farther from the first IC controller  35  is longer, so that the first IC controller  35  can be successfully communicated to the light-emitting chip groups  331  and controls a current to be made to the multiple light-emitting chip groups  331  in turn, and the multiple light-emitting chip groups are lightened in turn to achieve the flowing type light effect. 
     In this technical solution, to achieve the flowing type light effect, the lamp bulb is required to be provided with multiple light-emitting chip groups  331 . The light-emitting chip groups  331  include a plurality of LED chips  335  connected in series. A space between the plurality of LED chips  335  is 0.1 mm to 2.0 mm, that is, there is a certain space between the plurality of LED chips  335 , meaning that the plurality of LED chips cannot be stacked, but the largest space had better not exceed 2.0 mm, so as to prevent a discontinuous light effect caused by a large space. In the present disclosure, there are four light-emitting chip groups  331 . The first group includes three LED chips; the second and third groups each include four LED chips; and the fourth group includes six LED chips. 
     In this technical solution, the PCB light source panel  33  can be a ceramic base plate or a PC base plate. The PC base plate is flexible and can be bent appropriately, so that when the PCB light source panel  33  is manually or mechanically automatically packaged, the PCB light source panel  33  is hard to damage, and has a better use effect and longer service life. 
     Preferably, the first metal supporting wire  32  is connected with a resistor a  321 . The second metal supporting wire  34  is connected with a resistor b  341 . The resistor a  321  and the resistor b  341  are both arranged in the accommodating holes  311  and are in close fit. The positions of the resistor a  321  and the resistor b  341  are limited using the accommodating holes  311 , so as to avoid the impact of the movement of the resistors on the use of the lamp bulb. In this technical solution, the first metal supporting wire  32  and the second metal supporting wire  34  are provided with the resistor a  321  and the resistor b  341 , which means that the resistor a  321  and the resistor b  341  are plugged in the middle portions of the first metal supporting wire  32  and the second metal supporting wire  34  or the first metal supporting wire  32  and the second metal supporting wire  34  are connected to the PCB light source panel  33  and then are connected to the lamp base  1  through additional wires. A main function of the resistor a  321  and the resistor b  341  is to prevent the stem assembly  3  from being damaged by an extremely high short-circuit current in the lamp bulb to achieve a current limiting effect. The resistor a and the resistor b can also achieve a heat dissipation effect if the lamp bulb is used constantly and generate a high temperature. In addition, the resistor a  321  and the resistor b  341  can also be integrated on the PCB light source panel  33  to further simplify the structure of the lamp bulb. 
     In this technical solution, the bottoms of the accommodating holes  311  are closed. The accommodating holes  311  are blind holes pierced by wires. The accommodating holes  311  are made into the bottom-closed blind holes, which is favorable for preventing water, wet air and the like from entering the shell  2  through the accommodating holes  311 , so that the impact of fog produced in the shell  2  during use on the internal light source panel is avoided. 
     The above contents are only preferred embodiments of the present disclosure. Those of ordinary skill in the art can make changes to the specific implementations and application scopes according to the idea of the present disclosure, and the contents of this specification shall not be understood as restrictions to the present disclosure.