CN218993107U

CN218993107U - Non-polar constant-current full-package injection molding module

Info

Publication number: CN218993107U
Application number: CN202222953177.6U
Authority: CN
Inventors: 邓伟强; 陈芳敏
Original assignee: Shenzhen Leadbeyond Optoelectronics Co ltd
Current assignee: Shenzhen Leadbeyond Optoelectronics Co ltd
Priority date: 2022-11-07
Filing date: 2022-11-07
Publication date: 2023-05-09
Anticipated expiration: 2032-11-07

Abstract

The utility model discloses a nonpolar constant-current full-package injection molding module which comprises an LED, a bridge pile BD for adjusting the current direction, a constant-current IC for driving the LED and carrying out steady-state protection on the LED and a resistor R1 for adjusting the power of the module, wherein the LED is arranged at the output end of the bridge pile BD, the constant-current IC comprises an LED end, a power supply voltage end VDD, a dimming end DIM, a grounding end GND and a switching end CS, the grounding end GND of the constant-current IC is connected with the bridge pile BD, and the resistor R1 is connected in parallel with the constant-current IC and is connected with the switching end CS. The utility model provides a nonpolar constant-current full-package injection molding module, wherein a full bridge pile BD is added at the front end of a constant-current circuit, the input end of the bridge pile BD is connected with a power supply, whether the power supply is plugged in the positive direction or the negative direction, and the output end of the bridge pile BD is correspondingly distinguished between the positive electrode and the negative electrode, so that the problem that the module is connected with the positive electrode and the negative electrode in a wrong way is solved, the damage to a chip caused by the wrong connection of the positive electrode and the negative electrode is avoided, the normal constant-current function and the stable current of the module are ensured, the stability of the module is enhanced, and the LED emits light stably.

Description

Non-polar constant-current full-package injection molding module

Technical Field

The utility model relates to the technical field of LED illumination, in particular to a nonpolar constant-current full-package injection molding module.

Background

Plastic injection molding is an excellent processing method that can realize low-cost, mass-production of plastic products, and is also an indispensable processing technology for developing high-technology commodities.

The LED module is widely applied to places such as advertising lamp boxes, indicator lamps, decorative lighting and the like due to the characteristics of low power consumption, long service life, simple structure, convenient installation and the like, and the application range of the LED module is wider along with the gradual maturation of the LED module technology.

The existing module is not normally connected in reverse, the die is easily assembled with wrong positive and negative electrodes to damage a chip, the chip is damaged to cause abnormal constant current function of the module, current fluctuation is caused, the luminous state is unstable, and the stability of the module is poor.

Therefore, there is a need for a nonpolar constant current full package injection molding module that solves the above-mentioned problems.

Disclosure of Invention

In view of the above, the present utility model aims at overcoming the drawbacks of the prior art, and its main objective is to provide a nonpolar constant current full package injection molding module, which uses a full bridge rectifier to prevent the reverse connection of an LED constant current loop, and a CN4215 constant current IC to perform steady protection on the LED, so as to form a circuit that prevents reverse connection and works independently, reduce current fluctuation, enhance the stability of the module, and make the light emission more stable.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a complete package injection molding module of nonpolar constant current, includes LED, is used for adjusting the bridge BD of current direction, is used for driving the LED and carries out the constant current IC that steady state protected to the LED and is used for adjusting the resistance R1 of module power, the LED is installed bridge BD's output, constant current IC includes LED end, power supply voltage end VDD, dimming end DIM, ground terminal GND and exchange terminal CS, constant current IC's ground terminal GND and bridge BD link to each other, resistance R1 connects in parallel on constant current IC and links to each other with exchange terminal CS, bridge BD, LED and constant current IC establish ties and constitute the return circuit.

Preferably, a power supply is further included, and the power supply is connected to the input terminal of the bridge pile BD.

Preferably, when the input end of the bridge rectifier BD is forward or reverse plugged with the power supply, the voltage output by the output end of the bridge rectifier BD is a preset voltage.

Preferably, the LEDs are a plurality of LEDs, and the LEDs are connected in series and parallel.

Preferably, the constant current IC and the resistor R1 are packaged in a chip component.

The utility model provides a complete package module of nonpolar constant current, includes lens, shell, electron line and circuit board, be provided with in the shell and be used for holding the inclosed accommodation space of circuit board, the electron line wears to establish at the shell tip and stretches into accommodation space links to each other with the circuit board, be provided with emitting diode on the circuit board, lens integral type is installed on the shell, emitting diode is located the below of lens.

Preferably, the lens has a spherical convex structure.

Compared with the prior art, the utility model has obvious advantages and beneficial effects, in particular, the technical scheme shows that by providing the nonpolar constant current full package injection molding module, the full bridge pile BD is added at the front end of the constant current circuit, the input end of the bridge pile BD is connected with the power supply, whether the power supply is inserted in the positive direction or the reverse direction, and the output end of the bridge pile BD correspondingly distinguishes the positive electrode from the negative electrode, so that the problem that the module is connected with the positive electrode and the negative electrode in a wrong way is solved, the chip is prevented from being damaged due to the fact that the positive electrode and the negative electrode are connected in a wrong way, the normal constant current function and the stable current of the module are ensured, the stability of the module is enhanced, and the LED emits light stably.

In order to more clearly illustrate the structural features and efficacy of the present utility model, a detailed description thereof will be given below with reference to the accompanying drawings and examples.

Drawings

FIG. 1 is a circuit schematic diagram of a nonpolar constant current full package injection molding module according to the present utility model;

FIG. 2 is a schematic perspective view of a nonpolar constant-current full-package injection molding module according to the present utility model;

FIG. 3 is a first view cross-section of a nonpolar constant current full pack injection mold module of the present utility model;

FIG. 4 is a second view cross-section of a nonpolar constant current full pack injection mold module of the present utility model;

fig. 5 is an enlarged view of M of fig. 4.

The attached drawings are used for identifying and describing:

10. a lens; 20. a housing; 21. an accommodating space; 22. a wire hole; 30. an electron beam; 40. a circuit board; 41. a light emitting diode.

Detailed Description

The utility model discloses a nonpolar constant-current full-package injection molding module, which is shown in figures 1 to 5, and comprises an LED, a bridge pile BD for adjusting the current direction, a constant-current IC for driving the LED and carrying out steady-state protection on the LED and a resistor R1 for adjusting the power of the module, wherein the LED is arranged at the output end of the bridge pile BD, the constant-current IC comprises an LED end, a power supply voltage end VDD, a dimming end DIM, a grounding end GND and a switching end CS, the grounding end GND of the constant-current IC is connected with the bridge pile BD, the resistor R1 is connected in parallel with the constant-current IC and is connected with the switching end CS, and the bridge pile BD, the LED and the constant-current IC are connected in series to form a loop. The constant current IC is CN4215, the bridge pile BD is formed by bridge connection of four rectifying silicon chips and external insulation plastic encapsulation, and the high-power rectifying bridge is encapsulated by adding a zinc metal shell outside an insulation layer, so that heat dissipation is enhanced.

The bridge pile BD is an electronic element, the inside of which is composed of a plurality of diodes, the main function is rectification, and the current direction is regulated, the technical problem to be solved by the utility model is that the existing module is not normally reverse-connected, the die is easily assembled with wrong positive and negative poles to damage a chip, and the luminous state is unstable, therefore, the bridge pile BD is used for rectifying efficiently and conveniently, four tubes in the bridge pile BD are selected and paired, the performance is close, if the heat dissipation is required under the working environment condition, a heat dissipation block can be arranged on the bridge pile BD according to the requirement, so that the working performance is more stable, and meanwhile, the proper bridge pile BD can be selected according to the requirement of parameters related to withstand voltage, current and high-frequency characteristics. The full bridge is formed by connecting and packaging four rectifying diodes into a whole in a bridge type full-wave rectifying circuit mode.

Bridge pile BD is as a power components and parts, uses extensively, can be applied to various power equipment, and this scheme selects four diode group's bridge circuits to realize turning into output DC voltage the alternating voltage of power input, consequently, bridge pile BD's input is no matter with the power is just inserted or is inserted conversely, bridge pile BD's output voltage is the voltage of predetermineeing, the voltage of predetermineeing can set up according to the actual demand of consumer, has solved the problem that the module connects wrong positive negative pole, has avoided damaging the chip because of connecing wrong positive negative pole, ensures the stability of module electric current, makes LED luminous stable.

The LEDs are provided with a plurality of LEDs, and are connected in parallel and in series, specifically, the LEDs form loops as many as possible when the circuit board 40 is installed, so that the number of series connection of modules is reduced as much as possible, otherwise, the LEDs are affected by voltage drop, and even the circuit board 40 may be burnt out due to overlarge single-path current.

The nonpolar constant-current full-package injection molding module further comprises a power supply, wherein the power supply is connected to the input end of the bridge rectifier BD, the power supply outputs alternating current, the bridge rectifier BD is used for rectifying the current of the power supply, and the alternating current is converted into unidirectional direct current pulsating voltage through the unidirectional conduction function of the diode.

The nonpolar constant-current full-package injection molding module further comprises a lens 10, a shell 20, an electronic wire 30 and a circuit board 40, wherein the shell 20 is injection molded and is internally provided with a closed accommodating space 21 for accommodating the circuit board 40, the electronic wire 30 is arranged at the end part of the shell 20 in a penetrating manner and stretches into the accommodating space 21 to be connected with the circuit board 40, the circuit board 40 is provided with a light emitting diode 41, the lens 10 is integrally arranged on the shell 20, and the light emitting diode 41 is positioned below the lens 10. Each of which is provided with a pair of wire holes 22 for passing through the electron wire 30, and the light emitting diodes 41 are the LEDs. The shell 20 is integrally formed by adopting a full-package injection molding process, has a good waterproof and dustproof function, and has waterproof grade reaching IP65, so that the service life of the LED is greatly prolonged.

The constant current IC and the resistor R1 adopt a chip component packaging mode, specifically, the chip LED is attached to a PCB (printed circuit board) in a surface mode and then is formed into components by wires pressed out by an injection molding machine, the working voltage of the constant current IC can reach 30V, and the current of 150mA is driven.

The electronic wire 30 is of an 18AWG type, the 18AWG is an abbreviation of American wire standard, the standard for distinguishing the diameter of the electronic wire 30 is adopted, the wire length is preferably 140mm, and 41 double-color-injection red-side white wires and double-color-injection black-side white wires with the diameters of 0.16mm are adopted in the wire 18AWG, so that the electronic wire has good flexibility, is not easy to fatigue damage and is beneficial to prolonging the service life.

The lens 10 is in a spherical convex surface, the lens 10 is provided with a luminous lens 10, the luminous angle is 160 degrees, and the illumination range is wider.

The lamp bead is packaged by 2835, has the color temperature of 6500K, has the voltage of 11V-12V, the power of 1.32W and the color rendering index of more than 80%, and is favorable for protecting eyesight.

The nonpolar constant-current full-package injection molding module has the required material of PVC, white RH02 and 60P hardness, can resist the temperature of 40 ℃ below zero, and has good mechanical property and dielectric property. The bridge rectifier BD, the constant current IC, the resistor R, LED, the electron beam, the lens 10 and the PVC filler form a module of an independent circuit.

The injection molding module is a component which is formed by linearly sticking the surface of the patch type LED on the PCB and then pressing the surface by using an injection molding machine, and has a waterproof function; the product has low power consumption, high brightness, long service life and no maintenance; the shell 20 adopts an injection molding process, so that the heat dissipation effect is good; the low voltage input is safe and reliable to use.

The LED injection molding module is one of the LED modules, has wider application because of the characteristics of large light emitting angle, high brightness, light attenuation and the like compared with other types of modules, and is suitable for the fields of advertising signboards, illumination indicator lamps, hotels, city brightening and the like.

The utility model is mainly designed by providing a nonpolar constant-current full-package injection molding module, adding a full bridge pile BD at the front end of a constant-current circuit, wherein the input end of the bridge pile BD is connected with a power supply, whether the power supply is plugged in the positive direction or the reverse direction, and the output end of the bridge pile BD correspondingly distinguishes the positive electrode from the negative electrode, so that the problem that the module is connected with the positive electrode and the negative electrode in a wrong way is solved, the damage to a chip caused by the connection of the positive electrode and the negative electrode in a wrong way is avoided, the normal constant-current function and the stable current of the module are ensured, the stability of the module is enhanced, and the LED emits light stably.

The circuit scheme of the utility model adopts the LED constant current loop with the full-bridge rectifier for preventing reverse connection, namely, the MB6F full-bridge rectifier can be used for preventing reverse connection, the CN4215 constant current IC is used for carrying out steady-state protection on the LED, thus forming a circuit for preventing reverse connection and independently working, and the module damage is greatly reduced when the circuit is applied to 12-18 cm single-sided lamp boxes in the areas such as airports, subways, banks, mansion, markets and the like. Meanwhile, the waterproof grade reaches IP65 by adopting a full-package injection molding process, so that a closed space is formed. Can adapt to more working environments and prolong the service life of the product. The structure of the lens 10 is a spherical convex surface, and the lens 10 is made of a transparent material, the light emitting angle is increased by the spherical convex surface and the transparent material, the irradiation range of light is increased, the energy utilization rate is increased, the lighting effect is enhanced, and the customer experience is better.

The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the technical scope of the present utility model, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present utility model still fall within the scope of the technical solutions of the present utility model.

Claims

1. The utility model provides a complete package injection molding module of nonpolar constant current, its characterized in that includes LED, is used for adjusting the bridge heap BD of current direction, is used for driving the LED and carries out the constant current IC that steady state protected to the LED and is used for adjusting the resistance R1 of module power, the LED is installed bridge heap BD's output, constant current IC includes LED end, power supply voltage end VDD, dimming end DIM, ground terminal GND and exchange terminal CS, constant current IC's ground terminal GND and bridge heap BD link to each other, resistance R1 connects in parallel on constant current IC and links to each other with exchange terminal CS, bridge heap BD, LED and constant current IC establish ties and constitute the return circuit.

2. The nonpolar constant current full package injection molding module of claim 1, further comprising a power source, wherein the power source is connected to an input terminal of the bridge rectifier BD.

3. The nonpolar constant current full package injection molding module according to claim 2, wherein the voltages output by the output end of the bridge rectifier BD are preset voltages when the input end of the bridge rectifier BD and the power supply are inserted forward or backward.

4. The nonpolar constant current full package injection molding module of claim 1, wherein the plurality of LEDs are connected in series and parallel.

5. The nonpolar constant current full package injection molding module of claim 1, wherein said constant current IC and said resistor R1 are packaged in a chip component.

6. The nonpolar constant current full package injection molding module according to any one of claims 1 to 5, comprising a lens, a housing, an electronic wire and a circuit board, wherein a closed accommodating space for accommodating the circuit board is arranged in the housing, the electronic wire is arranged at the end of the housing in a penetrating manner and stretches into the accommodating space to be connected with the circuit board, a light emitting diode is arranged on the circuit board, the lens is integrally arranged on the housing, and the light emitting diode is positioned below the lens.

7. The nonpolar constant current full package injection molding module of claim 6, wherein said lens has a spherical convex surface.