Novel pes driving device

Abstract

The utility model relates to the technical field of pes driving, and discloses a novel pes driving device which comprises a heat dissipation device, the top wall of the heat dissipation device is provided with an LB circuit board, the top wall of the LB circuit board is fixedly connected with a driving part, two first fixing holes are internally provided with first locking bolts in a penetrating mode, and the two first fixing holes are provided with second locking bolts in a penetrating mode. The bottom ends of the two first locking bolts penetrate into the heat dissipation device and are in threaded connection with the heat dissipation device, an HB circuit board is arranged on the front wall of the heat dissipation device, second fixing holes are formed in the two sides of the HB circuit board, and second locking bolts penetrate into the two second fixing holes. The rear ends of the two second locking bolts penetrate into the heat dissipation device and are in threaded connection with the heat dissipation device. According to the utility model, under the combined action of the LB circuit board, the heat dissipation device, the first locking bolt, the first fixing hole, the HB circuit board, the second locking bolt and the driving part, one driving circuit and a heat dissipation device matched with the driving board can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of PES driving, in particular to a novel PES driving device. Background Art

[0002] After years of rapid growth, the automotive industry has seen a slowdown in domestic car sales growth in recent years, with car demand gradually entering a stable and mature period. With technological advancements and intensified market competition, reducing the cost of headlights has become a key focus of the industry. Standardized design, optimized light sources, and reduced component counts can effectively reduce PES costs.

[0003] Motor vehicle headlights use LEDs as light sources, and maintaining a constant luminous flux requires constant current input to the LEDs. As we all know, Pes power is relatively high, and is generally achieved using a constant current solution driven by a DC-DC driver. Consequently, the resulting electromagnetic interference and heat dissipation are particularly large, requiring excellent heat dissipation and anti-interference capabilities to meet thermal power and EMC requirements. For electromagnetic interference generated by chips and inductors in DC-DC circuits, a shielding cover is typically welded to the circuit board to shield the interference source, while heat dissipation is achieved using a plate with better heat dissipation or a heat sink. Typically, the light board and driver each require independent heat sinks for heat dissipation, which increases production costs.

[0004] Therefore, a PES drive device with excellent performance and low cost is in urgent need of research. Utility Model Content

[0005] In order to make up for the above shortcomings, the present invention provides a novel PES driving device, which aims to improve the problem in the prior art that the lamp board and the driver each require independent radiators for heat dissipation, thereby resulting in high costs.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a new type of pes driving device, including a heat dissipation device, a LB circuit board is provided on the top wall of the heat dissipation device, and a driving part is fixedly connected to the top wall of the LB circuit board. A fixing hole 1 is opened on both sides of the middle part of the LB circuit board, and a locking bolt 1 is passed through the two fixing holes 1, and the bottom ends of the two locking bolts 1 are passed through the heat dissipation device and are threadedly connected to the heat dissipation device; an HB circuit board is provided on the front wall of the heat dissipation device, a fixing hole 2 is opened on both sides of the HB circuit board, and a locking bolt 2 is passed through the two fixing holes 2, and the rear ends of the two locking bolts 2 are passed through the heat dissipation device and are threadedly connected to the heat dissipation device; a shielding component, which is used to shield signal interference, and the shielding component is arranged on the outside of the LB circuit board.

[0007] Optionally, the shielding assembly includes a shielding cover, which is arranged on the upper side of the LB circuit board. The top wall of the LB circuit board is penetrated by mounting bolts on all four sides. The bottom ends of multiple mounting bolts are penetrated into the heat dissipation device and are threadedly connected to the heat dissipation device. The driving part is arranged in the shielding cover.

[0008] Optionally, a front side of the shielding cover is provided with a plurality of grooves.

[0009] Optionally, positioning shaft 1 is fixed on both sides of the top wall of the heat dissipation device, and the top ends of the two positioning shafts 1 pass through the LB circuit board and the shielding cover. Positioning shaft 2 is fixedly connected on both sides of the front wall of the heat dissipation device, and the front ends of the two positioning shafts 2 pass through the HB circuit board.

[0010] Optionally, mounting plates are fixedly connected to both sides of the front wall of the heat dissipation device.

[0011] Optionally, the top wall of the heat dissipation device is fixedly connected with evenly distributed heat dissipation fins.

[0012] The utility model has the following beneficial effects:

[0013] 1. In the present invention, through the joint action of the LB circuit board, the heat dissipation device, the locking bolt 1, the fixing hole 1, the HB circuit board, the locking bolt 2, and the driving part, a driving circuit board and a radiator matched with the driving board can be reduced.

[0014] 2. In the present invention, the driving circuit is enclosed by a reflector, so that the structural member acts as a shield to shield the signal interference caused by the DC-DC circuit, which not only solves the interference between the electronic device and the lamp body, but also reduces the cost of the shield and its welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional diagram of a novel PES drive device proposed in the present utility model;

[0016] Figure 2 This is a schematic diagram of the structure of a novel PES drive device without a shielding cover proposed in the utility model;

[0017] Figure 3 This is a structural diagram of the LB circuit board in a new type of PES drive device proposed in the utility model;

[0018] Figure 4 This is a structural schematic diagram of the HB circuit board in a new PES drive device proposed in the utility model.

[0019] Legend:

[0020] 1. Heat dissipation device; 2. Positioning shaft 1; 3. LB circuit board; 4. Groove; 5. Shielding cover; 6. Heat dissipation fins; 7. Mounting plate; 8. HB circuit board; 9. Driving part; 10. Positioning shaft 2; 11. Fixing hole 1; 12. Locking bolt 1; 13. Fixing hole 2; 14. Locking bolt 2; 15. Mounting bolt. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Reference Figures 1-4 The present invention provides an embodiment of a novel pes drive device, comprising a heat sink 1, mounting plates 7 are fixedly connected to both sides of the front wall of the heat sink 1, both mounting plates 7 are provided with holes for bolt installation, evenly distributed heat sink fins 6 are fixedly connected to the top wall of the heat sink 1, an LB circuit board 3 is provided on the top wall of the heat sink 1, a hole for penetrating a positioning shaft 2 is provided on the LB circuit board 3, positioning shafts 2 are fixed to both sides of the top wall of the heat sink 1, the top ends of the two positioning shafts 2 pass through the LB circuit board 3, a driving part 9 is fixedly connected to the top wall of the LB circuit board 3, and fixing holes 1 are provided on both sides of the middle part of the LB circuit board 3. 1, a locking bolt 12 is passed through each of the two fixing holes 11, and the bottom ends of the two locking bolts 12 are passed through the heat sink 1 and are threadedly connected to the heat sink 1. An HB circuit board 8 is provided on the front wall of the heat sink 1. The HB circuit board 8 is provided with a positioning hole groove for passing through the positioning shaft 2 10. Positioning shafts 2 10 are fixedly connected to both sides of the front wall of the heat sink 1. The front ends of the two positioning shafts 2 10 pass through the HB circuit board 8. A fixing hole 2 13 is provided on both sides of the HB circuit board 8. A locking bolt 2 14 is passed through each of the two fixing holes 2 13. The rear ends of the two locking bolts 2 14 are passed through the heat sink 1 and are threadedly connected to the heat sink 1.

[0023] During actual use, the staff can first solder the driving part 9 to the LB circuit board 3, and then place the LB circuit board 3 on the heat sink 1 and pass the positioning axis 2 through the LB circuit board 3, so as to position the LB circuit board 3. Then the staff will pass through multiple locking bolts 12 through the LB circuit board 3 and screw them into the heat sink 1 to fix the LB circuit board 3. However, the staff can place the HB circuit board 8 on the front surface of the heat sink 1 and pass the HB circuit board 8 through the positioning axis 2 10, so as to position the HB circuit board 8. Then the locking bolt 2 14 will pass through the HB circuit board 8 and screw it into the heat sink 1 to fix the HB circuit board 8, so that the LB circuit board 3, the HB circuit board 8 and the driving part 9 can be installed on a heat sink 1, and then the heat sink 1 can be fixed to the required installation position through the mounting plate 7 with the bolts, and the heat dissipation effect can be increased through the heat dissipation fins 6 on the heat sink 1, thereby achieving the effect of reducing one driving circuit board and the radiator matched with the driving board.

[0024] Reference Figures 1-4 , shielding component, the shielding component is used to shield signal interference, the shielding component is arranged on the outside of the LB circuit board 3, the shielding component includes a shielding cover 5, the inner wall of the shielding cover 5 is provided with aluminum plating, the shielding cover 5 is provided with a hole groove for penetrating the positioning shaft 2, the shielding cover 5 is arranged on the upper side of the LB circuit board 3, the top ends of the two positioning shafts 2 both penetrate the shielding cover 5, and a plurality of grooves 4 are provided on the front side of the shielding cover 5. A plurality of LEDs are fixed on the front side of the LB circuit board 3, and the plurality of grooves 4 correspond to the LEDs respectively. The top wall of the LB circuit board 3 is penetrated by mounting bolts 15, and the bottom ends of the plurality of mounting bolts 15 all penetrate into the heat dissipation device 1 and are threadedly connected to the heat dissipation device 1, and the driving part 9 is arranged in the shielding cover 5.

[0025] The staff can engage the shielding cover 5 on the LB circuit board 3 and make the positioning shaft 2 pass through the shielding cover 5 to position the shielding cover 5, and then pass the mounting bolts 15 through the shielding cover 5 and screw them into the heat dissipation device 1 to fix the shielding cover 5, so that the driving part 9 on the LB circuit board 3 can be closed. Therefore, the aluminum-plated surface inside the structure can be efficiently utilized to serve as the shielding cover 5. At the same time, the groove 4 opened on the shielding cover 5 can allow the LED on the LB circuit board 3 to leak out, so that the driving part 9 circuit of the low beam circuit board is enclosed by the reflector of the shielding cover 5 except for the LED part, thereby achieving the effect of using the structural member to serve as the shielding cover 5 to shield the signal interference caused by the DC-DC circuit, which not only solves the interference between the electronic device and the lamp body, but also reduces the shielding cover 5 and its welding cost.

[0026] Working principle: In actual use, the staff can place the LB circuit board 3 on the upper surface of the heat sink 1, and then the staff will engage the shielding cover 5 on the LB circuit board 3 and make the positioning shaft 2 pass through the shielding cover 5 to position the shielding cover 5, and then pass the mounting bolt 15 through the shielding cover 5 and screw it into the heat sink 1 to fix the shielding cover 5, so that the driving part 9 on the LB circuit board 3 can be closed, and then the two locking bolts 12 are respectively passed through the fixing holes 11 and screwed into the heat sink 1, so that the LB circuit board 3 can be fixed, and then the HB circuit board 8 is placed on the front surface of the heat sink 1, and the two locking bolts 2 14 are passed through the fixing holes 2 13 on the HB circuit board 8, and screwed into the heat sink 1 for fixation, so that the HB circuit board 8 can be fixed, and then the LB circuit board 3, the driving part 9 and the HB circuit board 8 can be fixed on a single heat sink 1. In addition, by fixing the shielding cover 5 on the upper surface of the LB circuit board 3, the driving part 9 on the LB circuit board 3 can be closed, thereby shielding signal interference.

[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A novel PES drive device, comprising a heat dissipation device (1), characterized in that: The top wall of the heat dissipation device (1) is provided with an LB circuit board (3), the top wall of the LB circuit board (3) is fixedly connected to a driving part (9), a fixing hole (11) is provided on both sides of the middle of the LB circuit board (3), a locking bolt (12) is passed through the two fixing holes (11), the bottom ends of the two locking bolts (12) are passed through the heat dissipation device (1) and are threadedly connected to the heat dissipation device (1), a HB circuit board (8) is provided on the front wall of the heat dissipation device (1), a fixing hole (13) is provided on both sides of the HB circuit board (8), a locking bolt (14) is passed through the two fixing holes (13), the rear ends of the two locking bolts (14) are passed through the heat dissipation device (1) and are threadedly connected to the heat dissipation device (1); A shielding component is used to shield signal interference, and the shielding component is arranged outside the LB circuit board (3).

2. A novel PES driving device according to claim 1, characterized in that: The shielding assembly includes a shielding cover (5), which is arranged on the upper side of the LB circuit board (3). The top wall of the LB circuit board (3) is penetrated by mounting bolts (15) on all sides. The bottom ends of the plurality of mounting bolts (15) are penetrated into the heat dissipation device (1) and are threadedly connected to the heat dissipation device (1). The driving part (9) is arranged in the shielding cover (5).

3. A novel PES driving device according to claim 2, characterized in that: A plurality of grooves (4) are provided on the front side of the shielding cover (5).

4. A novel PES driving device according to claim 1, characterized in that: Positioning shafts (2) are fixed on both sides of the top wall of the heat dissipation device (1), and the top ends of the two positioning shafts (2) pass through the LB circuit board (3) and the shielding cover (5). Positioning shafts (10) are fixedly connected on both sides of the front wall of the heat dissipation device (1), and the front ends of the two positioning shafts (10) pass through the HB circuit board (8).

5. A novel PES driving device according to claim 1, characterized in that: Mounting plates (7) are fixedly connected to both sides of the front wall of the heat dissipation device (1).

6. A novel PES driving device according to claim 1, characterized in that: The top wall of the heat dissipation device (1) is fixedly connected with evenly distributed heat dissipation fins (6).

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