CN207486684U - Vehicle lamp - Google Patents

Abstract

the utility model provides a vehicle lamp, it includes a lamp stand and a lamp shade, the lamp shade lid closes the front end at the lamp stand, the lamp shade front side is provided with a convex lens, be formed with an inner space between lamp stand and the lamp shade, the inner space is equipped with a base plate, a reflector group and a baffle, the upper and lower surface department of base plate respectively is equipped with an L ED lamp, and make two L ED lamps correspond with two reflectors that are different curvatures respectively, base plate the place ahead is located to the baffle, and the shaping is equipped with a light type production portion on the baffle, so, make the light of two L ED lamps reflect to baffle front end department via different curvature reflectors respectively, make its light pass the baffle again, in order to mould out required back via the baffle shape, throw out through convex lens spotlight again, in order to reach the adjustment far away, light type effect person.

Description

Car lamps

technical field

The utility model relates to a lamp for vehicles, in particular to a lamp for vehicles with a simple structure and capable of producing light patterns required by far and near lamps.

Background technique

Press, when vehicle is in poor visibility situation, as night, in tunnel, rainy day, thick fog or bad weather etc., it will affect the safety of vehicle driving, so vehicle is all provided with headlights. In addition, in order to meet the needs of driving vision, all automotive lamps have the switching function of far lights and near lights.

Generally, lamps with far and near lamp switching, such as the "improved structure of far and near lamp switching device" patent case of Taiwan New Patent No. M291382, the switching device includes a notch on the upper end of the fixing plate corresponding to the light-emitting component of the lamp, and a solenoid valve on the lower end , and located on one side of the solenoid valve, the lower end of the gap is provided with pivot seats on both sides, and the lower end of a light shield is extended on one side, and two pivot pieces with upper and lower pivot holes are arranged at intervals, and the two ends of a ㄩ-shaped elastic fastener are used to buckle the fixed piece pivot seat. Pivot group positioning, a pull piece is positioned at the lower pivot holes of the two pivot pieces of the shading plate with both ends threaded, and the extension piece sleeve is nested in the upper part of the solenoid valve shaft, and the pull piece is pulled down by the solenoid valve to drive the shading The far and near light switching operation of the board deflection. In addition, the "far and near light switching mechanism" of Taiwan's new patent No. M437277, the "vehicle light far and near light switching device" of No. M407185, and the "car light far and near light control device" of the invention patent No. I337143, etc., their structural design All must rely on a power source, such as: solenoid valve, motor, etc., to drive the shading plate correspondingly, so as to use the shading plate to block the light to form the effect of far and near lights. However, when the above-mentioned structure is formed, in addition to numerous components, the cost will also be increased due to the installation of the power source, and the assembly process is relatively complicated and labor-intensive, which is not ideal for the manufacturer.

Therefore, the designer of this utility model, in view of the fact that there are still many above-mentioned deficiencies in the practice of existing vehicle lamps, relies on his many years of experience and knowledge in related fields of manufacturing and design, and through many ingenuity, researches Create the utility model.

Utility model content

One purpose of the present utility model is to provide a vehicle lamp, which has a simple structure and can produce light patterns required by far and near lights.

One purpose of the present utility model is to propose a vehicle lamp, which uses an LED lamp group as a lighting source. Compared with traditional bulbs, it has the advantages of small size, long life and fast response speed, and uses Form of power supply circuit to drive the LED lamp group to emit light, so as to achieve the effect of power saving.

In order to achieve the above purpose, the utility model provides a vehicle lamp, comprising: a lamp holder; a lampshade, which covers the front end of the lamp holder, a convex lens is arranged on the front side of the lamp holder, and an inner space is formed between the lamp holder and the lamp shade; A base plate is set at the center of the inner space; an LED light group includes a first LED light and a second LED light, the first LED light is set on the upper surface of the base plate, and the second LED light is set on the lower surface of the base plate; An LED power supply circuit, which is a single-ended primary inductance converter circuit and is arranged on the upper surface or the lower surface of the substrate, the LED power supply circuit is electrically connected to the LED lamp group to supply power to the LED lamp group; a reflector group, including a first A reflective sheet and a second reflective sheet, the first reflective sheet is arranged at the upper position of the first LED lamp to reflect the light emitted by the first LED lamp, and the second reflective sheet is arranged at the lower position of the second LED lamp place, used to reflect the light emitted by the second LED lamp, wherein the curved surfaces of the first reflective sheet and the second reflective sheet have different curvatures respectively; The thickness of the front end of the board is 0.1-0.3 mm, and a light pattern generating part is formed on the partition board.

In an embodiment of the present invention, the central position of the partition is a light pattern generating part formed with a step difference.

In an embodiment of the present invention, the front side of the partition is formed with a light pattern generating part having a curved notch.

In one embodiment of the present invention, the appearance of the partition is a wedge shape with the front narrowing and gradually widening the rear.

In one embodiment of the present invention, the first LED light and the second LED light are set up in a front-to-back dislocation manner.

In an embodiment of the present invention, the first reflective sheet and the second reflective sheet are set up in a manner of front-to-back elevation difference.

In an embodiment of the present invention, the LED power supply circuit includes: a switch, including a first terminal, a second terminal and a control terminal, the second terminal is grounded; a first inductor, connected to an input power supply and the switch between the first ends of the first capacitor; one end of the first capacitor connected to the first end of the switch; one second inductor, one end of which is connected to a first node with the other end of the first capacitor, and the other end is connected through a first resistor Connected to a second node, the second node is a ground node; a diode, its positive end is connected to the first node, and its negative end is connected to the LED lamp group; and a controller, including: a control pin, connected to the control of the switch terminal, the controller controls the switch to be turned on or off through the control pin; a voltage detection pin is connected to the first node, so that the controller can detect the The voltage on the first node, the switch is controlled by the controller to turn on when the voltage on the first node is lower than a voltage threshold; and a current detection pin connected to the second node , so that the controller can detect the current on the second node through the current detection pin, and the switch is activated by the controller when the current on the second node is a negative current Control disconnected.

In an embodiment of the present invention, the controller further includes a ground pin connected to the connection point between the second inductor and the first resistor and grounded.

In an embodiment of the present invention, the switch is a metal oxide semiconductor field effect transistor or a bipolar transistor.

In an embodiment of the present invention, the first inductor and the second inductor share one iron core or use different iron cores respectively.

As can be seen from the above structure and specific embodiments, the utility model has the following advantages:

(1). The vehicle lamps of this utility model generate the required reflection angle by virtue of the relative positions of the two LED lamps and the two reflectors. In addition, the shape of the partition is used so that the light passing through the partition can shape the required light. According to this, the effect of adjusting the far and near light type can be achieved.

(2). The vehicle lamps of the utility model can achieve the effect of adjusting far and near lights only by means of two LED lights, two reflectors and a partition, and can omit the setting of many expensive components such as solenoid valves and motors, so as to The effect of greatly saving lamp manufacturing cost and assembly man-hours is achieved.

(3). The vehicle lamps of this utility model use LED lamps as the lighting source. Compared with traditional light bulbs, they have the advantages of small size, long life and fast response, and use SEPIC power supply circuits to drive LED lamps. Luminous, in order to achieve the effect of power saving.

Description of drawings

Fig. 1 is a structural cross-sectional view of an embodiment of the vehicle lamp of the present invention.

Fig. 2 is a perspective view of an embodiment of the partition plate of the present invention.

Fig. 3 is a spectrogram of the low-light projected light pattern of an embodiment of the vehicle lamp of the present invention.

Fig. 4 is a spectrogram of the projected light pattern of the high light according to an embodiment of the vehicle lamp of the present invention.

Fig. 5 is a spectrogram of the projected light pattern of the far and near lamps of an embodiment of the vehicle lamp of the present invention.

Fig. 6 is a partially enlarged view of the vehicle lamp of the present invention.

Fig. 7 is a structural sectional view of another embodiment of the vehicle lamp of the present invention.

Fig. 8 is a perspective view of another embodiment of the separator of the present invention.

Fig. 9 is a spectral diagram of the low-light projected light pattern of another embodiment of the vehicle lamp of the present invention.

Fig. 10 is a spectrogram of the projected light pattern of the high light in another embodiment of the vehicle lamp of the present invention.

Fig. 11 is a spectrogram of far and near light projected light patterns of another embodiment of the vehicle lamp of the present invention.

FIG. 12 is a structural diagram of the circuit operation of the switch conduction of the LED power supply circuit of the vehicle lamp of the present invention.

FIG. 13 is a structural diagram of the circuit operation when the switch of the LED power supply circuit of the vehicle lamp of the present invention is turned off.

Explanation of reference signs: 100-vehicle lamp; 101-vehicle lamp; 10-lamp holder; 11-inner space; 13 lampshade; 131-convex lens; 20-substrate; 30-LED lamp group; 31-first LED lamp ;33-the second LED lamp; 40-LED power supply circuit; 41-switch; 42-the first inductor; 43-the first capacitor; 44-the second inductor; 45-the first resistor; 46-diode; Device; 48-first node; 49-second node; 50-reflector group; 51-first reflector; 53-second reflector; 71—light pattern generator; DRI—control pin; VS—voltage detection pin; CS—current detection pin; GND—ground pin.

Detailed ways

Please refer to FIG. 1 , which is a structural sectional view of an embodiment of the vehicle lamp of the present invention. As shown in FIG. 1 , the vehicle lamp 100 of the present invention is an LED projection lamp for a vehicle, which includes a lamp holder 10 and a lampshade 13 . The lampshade 13 covers the front end of the lamp holder 10 . A convex lens 131 is provided on the front side of the lampshade 13 , and the convex lens 131 is arranged on the light output path of the vehicle lamp 100 . An inner space 11 is formed between the lamp holder 10 and the lampshade 13 . The inner space 11 will be provided with a substrate 20 , a reflector set 50 and a partition 60 .

The substrate 20 is disposed at the center of the inner space 11 . An LED lamp group 30 is disposed on the substrate 20 and includes a first LED lamp 31 and a second LED lamp 33 . The first LED lamp 31 will be arranged on the upper surface of the substrate 20, and the second LED lamp 33 will be arranged on the lower surface of the substrate 20, and the first LED lamp 31 and the second LED lamp 33 are set up in a front-back dislocation manner. Furthermore, an LED power supply circuit 40 is selectively disposed on the upper surface or the lower surface of the substrate 20 , and is electrically connected to the LED lamp group 30 . The LED power supply circuit 40 is a single-ended primary inductance converter (Single-Ended Primary Inductance Converter, SEPIC) circuit for supplying power to the LED lamp group 30 .

The reflective sheet set 50 includes a first reflective sheet 51 and a second reflective sheet 53 . Curved surfaces of the first reflective sheet 51 and a second reflective sheet 53 have different curvatures respectively. The first reflector 51 is arranged on the light path of the first LED lamp 31, such as at the position above the first LED lamp 31, and the second reflector 53 is arranged on the light path of the second LED lamp 33, such as the second LED lamp 33, and the first reflective sheet 51 and the second reflective sheet 53 are set up in a way that the front and rear are misaligned.

The partition 60 is arranged between the base plate 20 and the convex lens 131. Referring to FIG. 2, the appearance of the partition 60 is wedge-shaped with the front narrowing and gradually widening the rear. It is the light mode generating part 61 formed with a step difference.

Referring again to Fig. 1, when assembling the vehicle lamp 100, the substrate 20 is arranged in the inner space 11 of the vehicle lamp 100, and the position of the second LED lamp 33 arranged on the lower surface of the substrate 20 is set forward, and the device The position of the first LED light 31 on the upper surface of the base plate 20 is set further back, for example, the second LED light 33 is closer to the partition 60 than the first LED light 31 . Then, the first reflective sheet 51 and the second reflective sheet 53 are respectively arranged on the upper and lower inner walls of the lamp holder 10 corresponding to the positions where the first LED lamp 31 and the second LED lamp 33 are installed, and the second reflective sheet 53 and the second reflective sheet The first reflective sheet 51 is also formed with front and rear height differences corresponding to the second LED lamp 33 and the first LED lamp 31 of the front and rear height difference. Finally, the partition plate 60 is installed in front of the base plate 20 and then covers the lampshade 13 to complete the assembly of the vehicle lamp 100 of the present invention. The vehicle lamp 100 assembled in this embodiment will be assembled on the front end of the vehicle to be used as a vehicle light.

In the present invention, the first LED light 31 is designed as a near light, and the second LED light 33 is designed as a far light. When the vehicle lamp 100 operates in a low beam mode, the first LED lamp 31 will be driven by the LED power supply circuit 40 to emit light, and the light emitted by the first LED lamp 31 will be reflected by the first reflector 51 and projected forward. Going out, due to the curvature design of the first reflector 51, the reflection focus of the light is mainly concentrated on the front end of the partition 60, so that the light passes through the upper peripheral edge of the front end of the partition 60, and unnecessary scattered light is blocked by the partition 60 , and shape the required light pattern by means of the light pattern generator 61 with a step difference in the partition 60, and then condense and project it through the convex lens 131 to form a wide-surface low beam with a step difference at the upper edge of the center of the baseline Light type, as shown in Figure 3. Or, when the vehicle lamp 100 operates in a high beam mode, the second LED lamp 33 will be driven by the LED power supply circuit 40 to emit light, and the light emitted by the second LED lamp 33 will be reflected by the second reflector 53, and Projected forward, utilizing the curvature design of the second reflector 53, the reflection focus of the light is mainly concentrated on the front end of the partition 60, so that the light passes through the lower peripheral edge of the front end of the partition 60, and unnecessary scattered light is absorbed by the partition. Blocked by the partition, the light is concentrated and projected through the convex lens 131 to form a concentrated illumination high beam light pattern at the upper edge of the center of the baseline, as shown in FIG. 4 . Or, when the vehicle lamp 100 operates in a full light mode, the first LED lamp 31 and the second LED lamp 33 will be driven by the LED power supply circuit 40 to emit light at the same time, and the first LED lamp 31 and the second LED lamp 33 emit light. The light will be reflected by the first reflector 51 and the second reflector 53 respectively, and projected forward, and utilize the curvature design of the first reflector 51 and the second reflector 53, so that the first LED lamp 31 The reflection focus of the emitted light is concentrated on the upper peripheral edge of the front end of the partition 60 and the reflection focus of the light emitted by the second LED lamp 33 is concentrated on the lower peripheral edge of the front end of the partition 60, and then passes through the partition 60 to shape the required light pattern. , is condensed and projected by the convex lens 131, and accordingly, a full-beam type including low beam and high beam is formed, as shown in FIG. 5 .

As mentioned above, the focal point of the light reflected by the first reflector 51 and the second reflector 53 is concentrated at the front end of the partition 60 to pass through, and then projected out by the convex lens 131. Therefore, the tangent point A at the front end of the partition 60 The thickness to the tangent point B, and the distance from the front end of the partition 60 to the inner edge of the convex lens 131 will affect the light pattern of the low beam or high beam emitted by the convex lens 131. Referring to FIG. 6 together, when the tangent point A on the upper peripheral edge of the front end of the partition plate 60 does not change, the amount of light passing through the tangent point B1 and the tangent point B2 on the lower peripheral edge of the front end of the partition plate 60 falls on the inside of the convex lens 131. The position of the edge will be different, and it will also affect the high beam light type projected through the convex lens 131; on the contrary, when the tangent point of the peripheral edge below the front end of the partition 60 is used as the reference and does not change, the light passing through the front end of the partition 60 The amount of light at the tangent point with different thicknesses on the upper peripheral edge will affect the low-beam light type projected through the convex lens 131 . To put it simply, the amount of light passing through the tangent points on the upper and lower peripheral edges of the front end of the partition 60 will vary with the thickness of the front end of the partition 60 , thereby affecting the low beam or high beam light projected through the convex lens 131 . Herein, the utility model has gone through multiple optical tests and adjustments in the laboratory, and it is tested that when the thickness of the front end of the partition 60 is 0.1-0.3 mm, the best low-beam or high-beam light type can be obtained.

Please refer to FIG. 7 and FIG. 8 , which are a structural sectional view of another embodiment of the vehicle lamp of the present invention and a perspective view of another embodiment of the partition plate of the present invention. As shown in Figures 7 and 8, the front side of the wedge-shaped partition 70 of this embodiment is formed with a light pattern generating part 71 with a U-shaped curved arc gap, and the partition 70 is assembled on the vehicle lamp 101. 11 of the inner space. In this embodiment, the lamp 101 for vehicles can be assembled on the front end of the motorcycle to be used as the headlight of the motorcycle.

When the vehicle lamp 101 operates in a low-beam mode, the first LED lamp 31 will be driven by the LED power supply circuit 40 to emit light, and the light emitted by the first LED lamp 31 will be projected forward after being reflected by the first reflector 51 , and focus the reflection focus of the light on the upper peripheral edge of the light pattern generating part 71 of the curved arc gap on the front side of the partition 70, so that the light passing through the upper peripheral edge of the front end of the partition 70 shapes the required light pattern, and then The light is concentrated and projected through the convex lens 131 to form a wide-area low-beam light pattern with a curved arc and a concave upper edge, as shown in FIG. 9 . Alternatively, when the vehicle lamp 101 operates in a high beam mode, the second LED lamp 33 will be driven by the LED power supply circuit 40 to emit light, and the light emitted by the second LED lamp 33 will be reflected by the second reflector 53, In the past, it is projected forward, and the reflection focus of the light is concentrated on the center below the light pattern generating part 71 of the curved arc gap on the front side of the partition 70, so that the light passing through the center of the front end of the partition 70 can shape the required light. After the shape, the convex lens 131 concentrates the light and projects it out to form a concentrated illumination high beam light pattern with an upper edge protruding in a curved arc, as shown in Figure 10. Or, when the vehicle lamp 101 operates in a full light mode, the first LED lamp 31 and the second LED lamp 33 will be driven by the LED power supply circuit 40 to emit light at the same time, and the first LED lamp 31 and the second LED lamp 33 emit light. The light rays are respectively reflected by the first reflective sheet 51 and the second reflective sheet 53 and then projected forward, so that the reflection focus of the light emitted by the first LED lamp 31 is concentrated on the curved notch on the front side of the partition 70. The upper periphery of the generating part 71 and the reflection focus of the light emitted by the second LED lamp 33 are concentrated in the center of the light pattern generating part 71 below the curved arc gap on the front side of the partition 70, and then pass through the partition 70 to shape the required shape. After the light type, it is focused and projected by the convex lens 131 to form a full-beam type with low beam and high beam lighting, as shown in FIG. 11 .

Furthermore, the above-mentioned embodiments or drawings do not limit the specific implementation of the vehicle lamp 100/100 of the present invention. The utility model can further adjust the front and rear positions of the baffle 60/70, for example, when the baffle 60/70 is adjusted backward, the brightness of the light pattern projected in the middle can be increased, and the light pattern on both sides can be brighter. retracted type. Here, all appropriate changes or modifications made by persons with ordinary knowledge in the technical field shall be regarded as not departing from the scope of patents claimed by the vehicle lamp 100/100 of the present utility model.

Please refer to FIG. 12 and FIG. 13 , which are schematic diagrams of the switch-on and switch-off circuit operations of the LED power supply circuit of the vehicle lamp of the present invention, respectively. Based on the above, the LED power supply circuit 40 of the present invention is a single-ended primary inductance converter (SEPIC) circuit, which is used to provide the power required for the LED lamp group 30 of the vehicle lamp 100/101 to emit light. As shown in Figure 12 and Figure 13, the LED power supply circuit 40 includes a switcher 41, a first inductor 42, a first capacitor 43, a second inductor 44, a first resistor 45, a diode 46 and a controller 47. In the present invention, the first inductor 42 and the second inductor 44 share a core or use different cores, and the second inductor 44 functions as an output winding and a negative winding.

In the present utility model, the switch 41 is a metal oxide semiconductor field effect transistor (MOSFET) or a bipolar transistor (BJT), which includes a first terminal (such as a drain terminal or a collector terminal), a second terminal (source terminal) Terminal or emitter terminal) and a control terminal (such as gate terminal or base terminal). The first inductor 42 is connected between an input power Vin and the first end of the switch 41 . One end of the first capacitor 43 is connected to the first end of the switch 41 . One end of the second inductor 44 and the other end of the first capacitor 43 are connected to a first node 48, and the other end is connected to a second node 49 through the first resistor 45, and the second node 49 is a ground node. The positive terminal of the diode 46 is connected to the first node 48 , and the negative terminal is connected to the LED lamp group 30 .

The controller 47 includes a control pin (DRI), a voltage detection pin (VS), a current detection pin (CS) and a ground pin (GND). The control pin (DRI) is connected to the control terminal of the switch 41 , and the controller 41 controls the switch 41 to turn on (Turn-On) or switch off (Turn-Off) via the control pin (DRI). The voltage detection pin (VS) is connected to the first node 48, the controller 47 detects the voltage of the first node 48 through the voltage detection pin (VS), when the controller 47 detects the voltage of the first node 48 through the voltage detection pin (VS) When the voltage on the first node 48 is lower than a voltage threshold (Vth) set by a controller 47, the controller 47 controls the switch 41 to be turned on through a control pin (DRI). In an embodiment of the present invention, a pulse voltage is generated on the first node 48 , and the voltage threshold (Vth) is designed as a valley value of a pulse voltage. The current detection pin (CS) is connected to the second node 49, and the controller 47 detects the current flow direction of the second node 49 through the current detection pin (CS). When it is detected that the current on the second node 49 is a negative current (for example, the current flows from the ground to the second inductor 44 ), the controller 47 controls the switch of the switch 41 to turn off through the control pin (DRI). Furthermore, the ground pin (GND) is connected to the connection point between the second inductor 44 and the first resistor 45 and grounded.

As shown in FIG. 12, when the switch 41 is in a turn-on state (Turn-On), a first current I1 flows from the input power supply Vin to the first inductor 42 to charge the first inductor 42. At the same time, the first The capacitor 43 is discharged, and a second current I2 flows from the first capacitor 43 to the second inductor 44 to charge the second inductor 44 . Next, after the first capacitor 43 is discharged for a period of time, if the storage voltage on the first capacitor 43 has been discharged lower than the voltage on the first node 48, the second inductor 44 will discharge to the first capacitor 43 for the first The capacitor 43 is charged, and the controller 47 will detect a negative current on the second node 49 through the current detection pin (CS), such as the third current I3. At this time, the controller 47 will detect a negative current through the control pin (DRI ) controls the switch device 41 to turn off the switch.

In addition, as shown in FIG. 13, when the switch 41 is switched to the off state, the first inductor 42 discharges, and a fourth current I4 flows from the input power supply Vin to the LED lamp through the first inductor 42, the first capacitor 43 and the diode 46. Group 30, to charge the first capacitor 43 and supply power to the LED lamp group 30, at the same time, the second inductor 44 will also discharge, a fifth current I5 flows from the second inductor 44 to the LED lamp group 30 through the diode 46, for the LED lamp group 30 The LED lamp group 30 supplies power. Next, the first inductor 42 and the second inductor 44 continue to discharge, the fourth current I4 and the fifth current I5 drop slowly, and the voltage of the first node 48 also drops slowly. If the controller 47 passes the voltage detection pin (VS ) detects that the voltage on the first node 48 is lower than the voltage threshold (Vth), at this time, it will indicate that the fifth current I5 has dropped to zero, and the controller 47 controls the switch through the control pin (DRI) The switch of 41 is turned on again. Then, the controller 47 repeatedly turns on or off the switch for the switch 41 to continue the step-up or step-down operation. Here, the LED power supply circuit 40 can provide the working energy required for the operation of the LED lamp group 30 of the vehicle lamp 100 / 101 to drive the LED lamp group 30 to emit light.

As can be seen from the above structure and specific embodiments, the utility model has the following advantages:

(1). The vehicle lamp 100/101 of the present utility model produces the required reflection angle by virtue of the relative position configuration of the two LED lamps 31, 33 and the two reflectors 51, 53, and utilizes the shape set by the partition plate 60/70 to make the wearing The 60/70 light passing through the partition can shape the required light pattern, and accordingly, the effect of adjusting the far and near light pattern can be achieved.

(2). The vehicle lamp 100/101 of the present utility model can achieve the effect of adjusting far and near lights only by means of two LED lights 31, 33, two reflectors 51, 53 and a partition 60/70, and can Eliminate the configuration of many expensive components such as solenoid valves and motors, so as to achieve the effect of greatly saving lamp manufacturing costs and assembly man-hours.

(3). The vehicle lamp 100/101 of the present utility model utilizes the LED lamp group 30 as the illumination source. Compared with the traditional light bulb, it has the advantages of small size, long life and fast response speed, and uses the power supply circuit 40 in the form of SEPIC to drive the LED lamp group 30 to emit light, so as to achieve the effect of saving electricity.

The above-mentioned ones are only embodiments of the present utility model, and are not used to limit the scope of implementation of the present utility model. Changes and modifications should be included in the protection scope of the present utility model.

Claims (10)

1. A lamp for a vehicle, characterized in that it comprises: a lamp holder; A lampshade, which covers the front end of the lamp holder, a convex lens is provided on the front side of the lampshade, and an inner space is formed between the lamp holder and the lampshade; a base plate disposed at the center of the inner space; An LED lamp group, which includes a first LED lamp and a second LED lamp, the first LED lamp is arranged on the upper surface of the substrate, and the second LED lamp is arranged on the lower surface of the substrate; An LED power supply circuit, which is a single-ended primary inductance converter circuit and is arranged on the upper surface or the lower surface of the substrate, the LED power supply circuit is electrically connected to the LED lamp group to supply power to the LED lamp group; A set of reflective sheets, including a first reflective sheet and a second reflective sheet, the first reflective sheet is arranged above the first LED lamp to reflect the light emitted by the first LED lamp , the second reflective sheet is arranged at the lower position of the second LED lamp to reflect the light emitted by the second LED lamp, wherein the curved surfaces of the first reflective sheet and the second reflective sheet have different curvatures respectively; and A partition, which is located in the internal space and between the substrate and the convex lens, the thickness of the front end of the partition is mm, and a light-type generating part is molded on the partition. 2 . The vehicle lamp according to claim 1 , wherein a stepped light pattern generating portion is formed at the center of the partition. 3 . 3 . The vehicle lamp according to claim 1 , wherein a light pattern generating portion with a curved notch is formed on the front side of the partition. 4 . 4 . The vehicle lamp according to claim 1 , wherein the appearance of the partition presents a wedge-shaped shape that narrows at the front and gradually widens at the rear. 5 . The vehicle lamp according to claim 1 , wherein the first LED lamp and the second LED lamp are set up in a front-to-rear dislocation manner. 6 . 6 . The vehicle lamp according to claim 1 , wherein the first reflective sheet and the second reflective sheet are set up with a front-to-rear level difference. 7 . 7. The vehicle lamp according to claim 1, wherein the LED power supply circuit comprises: A switch, including a first terminal, a second terminal and a control terminal, the second terminal is grounded; a first inductor connected between an input power source and the first end of the switch; a first capacitor, one end of which is connected to the first end of the switch; A second inductor, one end of which is connected to a first node with the other end of the first capacitor, and the other end is connected to a second node via a first resistor, and the second node is a ground node; A diode, the positive end of which is connected to the first node, and the negative end is connected to the LED lamp group; and a controller, including: a control pin connected to the control terminal of the switch, and the controller controls the switch to be turned on or off through the control pin; A voltage detection pin, connected to the first node, so that the controller can detect the voltage on the first node through the voltage detection pin, and the switch is on the first node When the voltage on is lower than a voltage threshold value, it is controlled by the controller to turn on; and A current detection pin, connected to the second node, so that the controller can detect the current on the second node through the current detection pin, and the switch is at the second node When the current on is a negative current, it is controlled to be disconnected by the controller. 8. The vehicle lamp according to claim 7, wherein the controller further comprises a ground pin, and the ground pin is connected to the connection between the second inductor and the first resistor point and ground. 9. The vehicle lamp according to claim 7, wherein the switch is a metal oxide semiconductor field effect transistor or a bipolar transistor. 10 . The vehicle lamp according to claim 7 , wherein the first inductor and the second inductor share one iron core or use different iron cores respectively. 11 .