Compact light engine without external driving power supply

Abstract

The utility model provides a compact light engine free of an external driving power supply, which comprises a base, the base is cylindrical, at least one mounting column is arranged in the base, and a power supply circuit board, a control circuit board, a lamp holder assembly and an upper cover are sequentially sleeved on the base from bottom to top through the mounting column. A filter capacitor, an inductor and a transformer are distributed on the annular face of the upper cover, the power supply circuit board is electrically connected with the control circuit board to supply power to the control circuit board, the control circuit board is annular, a lamp bead control circuit is integrated on the annular face of the control circuit board, and light emitting control over the lamp beads is achieved by being electrically connected with the lamp beads. And a lens is arranged on the same vertical axis of the first through hole, so that the luminous efficiency of the lamp bead is improved through the lens. The built-in power supply circuit board is designed to supply power to the light engine through a compact structure, so that the light engine does not need to be powered by an external driving power supply, the structural design is compact, and the integrated design of the LED lamp is simplified.

Description

Technical Field

[0001] The utility model relates to the field of lighting equipment, and particularly relates to a compact optical engine without an external driving power supply. Background Art

[0002] With the development of LED lighting technology, the emergence of LED optical engines has brought a more standardized design solution for LED lamps. An LED optical engine is an overall combination including an LED package / array, an LED driver, and other photometric, thermal, mechanical, and electrical components. This combination is usually directly connected to a branch circuit through a conventional connector matching the LED lamp. Since the LED optical engine is a standardized product, several standard LED optical engines can be selected according to different application scenarios to design and manufacture different LED lamps, which is conducive to the standardized manufacturing and popularization of LED lamps, thus greatly reducing the R & D cost of LED lighting lamps and shortening the product production cycle.

[0003] Since LED lamps usually require a relatively large number of optical engines for integrated design, in order to adapt to portable lighting equipment and LED lighting application scenarios with limited space, higher requirements are needed for the compactness of the optical engine structure design. In addition, since the optical module usually requires an external driving power supply to provide the required power for the normal operation of the light source and other components, additional layout and wiring space often need to be designed for the external driving power supply, and the external driving power supply will also increase the complexity of the design and production installation of LED lamps. Therefore, in order to further reduce the design space, it is necessary to consider optimizing its design.

[0004] Therefore, it is necessary to design a compact optical engine structure that does not require external driving power supply. Content of the Utility Model

[0005] A compact optical engine without an external driving power supply provided by the utility model is mainly used to solve problems such as the existing LED optical engine being not conducive to the integrated design of LED lamps, so as to achieve the effects that the optical engine does not require an external driving power supply, the structure design is compact, and the integrated design of LED lamps is simplified.

[0006] The utility model realizes the above purpose through the following technical solutions:

[0007] A compact optical engine without an external drive power supply, including a base. The base is cylindrical, and at least one mounting post is provided inside it. A power circuit board, a control circuit board, a lamp socket assembly, and an upper cover are sequentially sleeved from bottom to top through the mounting post. The central axes of the base, the power circuit board, the control circuit board, the lamp socket assembly, and the upper cover are on the same straight line. The power circuit board is annular, and filter capacitors, inductors, and transformers are distributed on its annular surface. The power circuit board supplies power to the control circuit board through electrical connection. The control circuit board is annular, and a lamp bead control circuit is integrated on its annular surface, and the lighting control of the lamp bead is realized by electrically connecting with the lamp bead. The lamp bead is installed at the center of the lamp socket assembly. A first through hole is provided at the center of the upper cover, and a lens is placed on the same vertical axis of the first through hole, and the lighting efficiency of the lamp bead is improved through the lens.

[0008] Wherein, a plurality of notches are provided at the edge of the control circuit board, and the shape of the notches matches the outer contours of the filter capacitors, inductors, and transformers.

[0009] A further solution is that a circular boss is provided at the center of the inner surface of the base, and the diameter of the boss is smaller than the inner circle diameters of the power circuit board and the control circuit board, and is used to provide support for the lamp socket assembly.

[0010] A further solution is that two of the mounting posts are symmetrically arranged around the boss, and the two mounting posts are integrally formed with the base or are snap-connected to the base through a buckle.

[0011] A further solution is that the mounting post is a hollow screw mounting post, and its inner diameter is larger than the thread diameter of an M3 screw, and the optical engine is fixedly installed on the lamp radiator through the M3 screw.

[0012] A further solution is that insulating paper is sleeved on the inner surface of the base, the side surface of the boss, and the outer surface of the mounting post. The insulating paper is made of plastic material and has electrical insulation performance.

[0013] A further solution is that through holes equal in number and opposite in position to the mounting posts are respectively opened on the power circuit board, the control circuit board, the LED lamp socket assembly, and the upper cover, and they are sequentially sleeved onto the screw mounting posts through the through holes.

[0014] A further solution is that a terminal block for power output is arranged on the power circuit board, and a terminal block for power input is arranged on the control circuit board, and the electrical connection and fixation of the power circuit board and the control circuit board are realized through the insertion of the terminal blocks.

[0015] A further solution is that the lamp socket assembly includes a lamp socket body and an elastic structural member. A through hole is formed in the center of the lamp socket body, and the lamp bead is clamped on the wall of the through hole by the elastic structural member.

[0016] A further solution is that the lamp bead is soldered to the control circuit board through a wire.

[0017] A further solution is that both the base and the boss are made of aluminum alloy. A heat-conducting material is provided at the bottom of the lamp bead, and the lamp bead is in contact with the outer surface of the top of the boss through the heat-conducting material for heat dissipation of the lamp bead.

[0018] Thus, the utility model has the following beneficial effects:

[0019] 1. By reasonably arranging large-sized filter capacitors, inductors, transformers and other devices on the power circuit board of the utility model, and by reasonably arranging the control circuit board, and avoiding the notch shape of the control circuit board according to the outer contours of large-sized filter capacitors, inductors, transformers and other devices on the lower-layer power circuit board, the installation of the control circuit board does not interfere with the filter capacitors, inductors, transformers and other devices in space, so that the volume of the product is greatly reduced. Compared with the existing optical engine, the structure of the optical engine of the utility model is more compact, so it has outstanding advantages in the applications of portable lighting devices and LED lighting application scenarios with limited space.

[0020] 2. By arranging the power circuit board through a compact structure design, the utility model can directly supply power to other electrical components in the optical engine without additionally designing an external drive power supply for power supply. Compared with the existing optical engine, the layout and wiring space design of the external drive power supply are saved, and the volume and complexity of the integrated optical engine design of the LED lamp are further greatly reduced.

[0021] 3. By designing screw mounting posts on the base of the utility model, the power circuit board, the control circuit board, the lamp socket assembly and the upper cover can be sequentially sleeved, and the structure design is simple and reliable, which is convenient for installation and later replacement or maintenance. And only screws need to pass through the mounting posts to fixedly install the whole optical engine on the lamp radiator, thus greatly facilitating the assembly of multiple optical engines integrated in the LED lamp and improving the production efficiency of the product.

[0022] 4. The base of the utility model can be directly in contact with the heat-conducting material at the bottom of the lamp bead through a boss design, and combined with its aluminum alloy material design, it can play a good heat-conducting role and realize efficient heat dissipation of the lamp bead.

[0023] 5. The upper cover of the utility model can more effectively concentrate and guide the light emitted by the lamp bead through a lens, thereby increasing the light utilization rate and illumination effect.

[0024] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Description of the Drawings

[0025] Figure 1 is an exploded view of a compact optical engine without an external drive power supply according to an embodiment of the present utility model.

[0026] Figure 2 is a structural diagram of the base of the present utility model.

[0027] Figure 3 is a structural diagram of the power circuit board of the present utility model.

[0028] Figure 4 is a front structural diagram of the lamp socket assembly of the present utility model.

[0029] Figure 5 is a back structural diagram of the lamp socket assembly of the present utility model.

[0030] Figure 6 is an assembly schematic diagram of the lamp socket assembly and the control circuit board according to an embodiment of the present utility model.

[0031] The list of components shown in the drawings is as follows:

[0032] 10: Base; 11: Boss; 12: Power cord outlet;

[0033] 20: Mounting post; 30: Insulating paper; 40: Power circuit board;

[0034] 41: Through hole on the power circuit board; 42: Terminal block for power output; 43: Power cord;

[0035] 50: Support post; 60: Control circuit board; 61: Through hole on the control circuit board;

[0036] 62: Terminal block for power input; 70: Lamp socket assembly; 71: Through hole on the lamp socket assembly;

[0037] 72: Elastic structure member; 73: Lamp bead; 74: Lamp socket body; 75: Thermal conductive material;

[0038] 80: Lens; 90: Upper cover; 91: Through hole on the upper cover; 92: First through hole. Specific Embodiments

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. Based on the described embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0040] An embodiment of a compact optical engine without an external drive power supply

[0041] See Figure 1 , an embodiment of a compact optical engine without an external drive power supply according to the present utility model includes a base 10. The base 10 is cylindrical and is provided with at least one mounting post 20 therein. A power supply circuit board 40, a control circuit board 60, a lamp holder assembly 70, and an upper cover 90 are sequentially sleeved from bottom to top through the mounting post 20. The central axes of the base 10, the power supply circuit board 40, the control circuit board 60, the lamp holder assembly 70, and the upper cover 90 are on the same straight line. The power supply circuit board 40 is annular, and filter capacitors, inductors, and transformers are distributed on its annular surface. The power supply circuit board 40 is powered by electrically connecting to the control circuit board 60. The control circuit board 60 is annular, and a lamp bead control circuit is integrated on its annular surface. The lighting control of the lamp bead 73 is realized by electrically connecting to the lamp bead 73. A lamp bead 73 is installed at the center of the lamp holder assembly 70. A first through hole 92 is provided at the center of the upper cover 90, and a lens 80 is disposed on the same vertical axis of the first through hole 92. The lighting efficiency of the lamp bead 73 is improved through the lens 80.

[0042] Among them, a plurality of notches are provided at the edge of the control circuit board 60, and the shapes of the notches match the outer contours of the filter capacitors, inductors, and transformers.

[0043] Specifically, the design of the optical engine of this embodiment in terms of electricity, mechanics, optics, thermotics, and communication all complies with the Zhaga (an alliance association composed of LED manufacturers) specifications. The compatibility and interchangeability of the optical engine are realized through standardized design, and the interoperability, replaceability, or repairability of components are allowed. Further, it can ensure that the LED lamp can be upgraded when new technologies emerge after installation.

[0044] See Figure 2 , specifically, a power cord outlet 12 is further provided on the base 10 of this embodiment. The power cord 43 of the power supply circuit board 40 is led out through the power cord outlet 12. The power cord 43 is provided with a connector, and an external power supply is connected through the connector to input an AC voltage of 110V or 220V.

[0045] See Figure 3, specifically, the power supply circuit board 40 of this embodiment integrates an electromagnetic filtering module, a rectifying and filtering module, a protection circuit, and a buck conversion circuit. The input end of the electromagnetic filtering module is connected to the AC voltage, which is used to filter out external burst pulses and high-frequency interference, reduce the electromagnetic interference brought by the input power supply, and it includes electronic components such as filter capacitors, inductors, and resistors; the input end of the rectifying and filtering module is connected to the output end of the electromagnetic filtering module, which is used to convert the filtered alternating current into direct current; the protection circuit is used for voltage / current monitoring and adjustment, and automatically protects in case of circuit faults; the buck conversion circuit is used to convert high-voltage direct current into low voltage and output it to the control circuit board 60.

[0046] Among them, the power supply circuit board 40 also integrates a PFC circuit. The PFC circuit samples the input voltage and current, and by controlling the on / off of the switching tube, makes the input current follow the change of the input voltage, so as to realize the correction of the power factor and reduce the interference of the switching power supply to the external power grid.

[0047] Specifically, there are several card slots and buckles provided at the edges of the upper cover 90 and the base 10 in this embodiment. The upper cover 90 and the base 10 are buckled through the card slots and buckles, and the connection method is simple and reliable.

[0048] In this embodiment, a circular boss 11 is provided at the center of the inner surface of the base 10. The diameter of the boss 11 is smaller than the inner circle diameters of the power supply circuit board 40 and the control circuit board 60, which is used to provide support for the lamp socket assembly 70.

[0049] In this embodiment, two mounting posts 20 are symmetrically arranged around the boss 11. The two mounting posts 20 are integrally formed with the base 10 or are snap-connected to the base 10 through a buckle.

[0050] Specifically, the connection method between the mounting post 20 and the base 10 in this embodiment can be designed according to actual needs. The standardized design of integral forming can make the structure more stable and improve reliability. And the snap-connection method can make the mounting post 20 adopt a different material from the metal base 10, such as plastic material, plastic material, etc. that are more cost-saving and have electrical insulation properties, and the snap-connection method is also convenient for installation; and the snap-connection method can make the mounting posts 20 with different inner diameters applicable to the base 10 with the same standardized structure, which is convenient for the flexible use and installation of different types of screws. It should be noted that the connection method in this embodiment is only exemplary and not the only way.

[0051] In this embodiment, the mounting post 20 is a hollow screw mounting post 20, and its inner diameter is larger than the thread diameter of the M3 screw. The optical engine is fixedly installed on the lamp radiator through the M3 screw.

[0052] Specifically, in this embodiment, the mounting posts 20 with different inner diameters can be designed according to the types of fixing screws, and the mounting posts 20 with different inner diameters can be applied to the base 10 of the same standardized structure by means of snap connection, which is convenient for the flexible use and installation of different types of screws.

[0053] In this embodiment, insulating paper 30 is sleeved on the inner surface of the base 10, the side surface of the boss 11, and the outer surface of the mounting post 20. The insulating paper 30 is made of plastic material and has electrical insulation performance.

[0054] Specifically, the insulating paper 30 in this embodiment can insulate the structural parts close to the power circuit board 40 and the control circuit board 60, preventing high-voltage breakdown.

[0055] In this embodiment, through holes 41, 61, 71, and 91 that are equal in number and opposite in position to the mounting posts 20 are respectively formed on the power circuit board 40, the control circuit board 60, the LED lamp socket assembly 70, and the upper cover 90, and the power circuit board 40, the control circuit board 60, the LED lamp socket assembly 70, and the upper cover 90 are sequentially sleeved onto the screw mounting posts 20 through the through holes 41, 61, 71, and 91.

[0056] In this embodiment, a terminal block 42 for power output is arranged on the power circuit board 40, and a terminal block 62 for power input is arranged on the control circuit board 60. The power circuit board 40 and the control circuit board 60 are electrically connected and fixed by plugging the terminal blocks 42 and 62.

[0057] Specifically, in this embodiment, a support post 50 is provided between the power circuit board 40 and the control circuit board 60 to assist in supporting the control circuit board 60 above, reducing the pressure borne by the terminal blocks 42 and 62 and making the structural design more stable.

[0058] See Figure 4 , in this embodiment, the lamp socket assembly 70 includes a lamp socket body 74 and an elastic structure 72. A through hole is formed at the center of the lamp socket body 74, and the lamp bead 73 is clamped on the wall of the through hole by the elastic structure 72.

[0059] Specifically, in this embodiment, a circular groove is provided above the lamp bead 73 on the lamp socket body 74. The circular groove is used to place the lens 80, and the lens 80 is clamped and fixed by the interaction force between the upper cover 90 and the lamp socket body 74 when the upper cover 90 is buckled.

[0060] Specifically, in this embodiment, a plurality of card slots are provided on the side of the lamp socket body 74. The elastic structure 72 is movably connected to the lamp socket body 74 through the card slots, and the lamp bead 73 is fixed on the lamp socket body 74 by pulling the elastic structure 72, achieving the effects of convenient installation and accurate positioning.

[0061] SeeFigure 6 , in this embodiment, the lamp beads 73 and the control circuit board 60 are connected by wire soldering.

[0062] Specifically, in this embodiment, the LED lamp beads 73 and the control circuit board 60 are connected by wire soldering, achieving the effects of low cost and high reliability.

[0063] See Figure 5 , in this embodiment, both the base 10 and the boss 11 are made of aluminum alloy. A heat-conducting material 75 is provided at the bottom of the lamp bead 73 and contacts the outer surface of the top of the boss 11 through this heat-conducting material 75 for heat dissipation of the lamp bead 73.

[0064] Specifically, the heat-conducting material 75 in this embodiment is an aluminum heat sink.

[0065] Specifically, the light engine of this embodiment is used in the integrated design of LED lamps or used alone. The usage scenarios include home lighting, office lighting, garden or courtyard lighting, factory workshop lighting, etc. Mainly, this product is suitable for the home indoor environment.

[0066] Specifically, without changing the main structure of the light engine of this embodiment, by using materials with different requirements, a higher protection level can be extended. For example, by using anti-UV materials, the ability to resist ultraviolet rays can be achieved, which is suitable for outdoor product design; by using materials with high temperature resistance and protection levels, it can be suitable for industrial products.

[0067] Specifically, the optimal usage state of the light engine of this embodiment is: ensure that the power supply voltage matches the rated voltage of the LED light engine; select a heat-conducting material 75 with a good heat dissipation design, such as an aluminum heat sink, to prevent overheating; according to different ambient temperatures, select a light engine with a matching protection level and temperature resistance; ensure that the power connection is firm and try to avoid direct exposure to rainwater; regularly clean the surface of the lamp and check the status of the power cord and connector.

[0068] The above embodiments are only the preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantive changes and substitutions made by those skilled in the art based on the present invention belong to the scope of protection required by the present invention.

Claims

1. A compact light engine without external driving power supply, characterized in that: include: A base, the base is cylindrical, at least one mounting column is arranged inside the base, and a power supply circuit board, a control circuit board, a lamp holder assembly and an upper cover are sequentially mounted through the mounting column from bottom to top, the central axes of the base, the power supply circuit board, the control circuit board, the lamp holder assembly and the upper cover are in the same straight line, the power supply circuit board is annular, and a filter capacitor, an inductor and a transformer are distributed on its annular surface, the power supply circuit board is powered by being electrically connected to the control circuit board, the control circuit board is annular, and a lamp bead control circuit is integrated on its annular surface, and the light emission control of the lamp bead is realized by being electrically connected to the lamp bead, the lamp bead is installed at the center of the lamp holder assembly, a first through hole is arranged at the center of the upper cover, and a lens is arranged on the same vertical axis of the first through hole, and the light emission efficiency of the lamp bead is improved by the lens; Wherein, a plurality of notches are arranged on the edge of the control circuit board, and the shapes of the notches match the outer contours of the filter capacitor, inductor and transformer.

2. The compact light engine without external driving power supply according to claim 1, characterized in that: A circular boss is provided at the center of the inner surface of the base, and the diameter of the boss is smaller than the inner diameter of the power circuit board and the control circuit board.

3. The compact light engine without external driving power supply according to claim 2, characterized in that: Two mounting posts are symmetrically arranged around the boss, and the two mounting posts are integrally formed with the base or are snap-connected to the base via a buckle.

4. The compact light engine without external driving power supply according to claim 3, characterized in that: The mounting column is a hollow screw mounting column, the inner diameter of which is larger than the thread diameter of an M3 screw, and the light engine is fixedly mounted on the lamp radiator by means of the M3 screw.

5. The compact light engine without external driving power supply according to any one of claims 1 to 4, characterized in that: The inner surface of the base, the side surface of the boss and the outer surface of the mounting column are all covered with insulating paper, and the insulating paper is made of plastic material and has electrical insulation performance.

6. The compact light engine without external driving power supply according to claim 1, characterized in that: The power circuit board, the control circuit board, the LED lamp holder assembly and the upper cover are respectively provided with through holes equal in number to the mounting posts and opposite in position, and are sequentially sleeved onto the mounting posts through their respective through holes.

7. The compact light engine without external driving power supply according to claim 1, characterized in that: The power circuit board is provided with a terminal row for power output, and the control circuit board is provided with a terminal row for power input. The power circuit board and the control circuit board are electrically connected and fixed by plugging the terminal rows.

8. The compact light engine without external driving power supply according to claim 1, characterized in that: The lamp holder assembly comprises a lamp holder body and an elastic structural member. A through hole is opened at the center of the lamp holder body, and the lamp bead is clamped on the wall of the through hole through the elastic structural member.

9. The compact light engine without external driving power supply according to claim 8, characterized in that: The lamp bead is connected to the control circuit board through wire soldering.

10. The compact light engine without external driving power supply according to any one of claims 2 or 8, characterized in that: The base and the boss are both made of aluminum alloy. The bottom of the lamp bead is provided with a heat-conducting material, and is in contact with the outer surface of the top of the boss through the heat-conducting material to dissipate heat from the lamp bead.

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