Lamp cap, motor vehicle lighting device and motor vehicle

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following description, many specific details are explained in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0031] In the description of the present invention, it should be understood that the terms “first” and “second” are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0032] In the description of the present invention, it should be understood that when an element is considered to be "connected" to another element, it may be directly connected to the other element or intervening elements may be present at the same time. In contrast, when an element is said to be "directly" connected to another element, there are no intervening elements.

[0033] In one embodiment, see Figure 1 to Figure 4 , A lamp holder 100, including: a heat-conducting mounting plate 110, a heat-conducting connecting plate 120, a heat pipe sleeve 130, a control circuit board 140, a transfer circuit board 150, two lamp boards 160, and a heat dissipation module 170. The thermally conductive mounting board 110 is connected to the thermally conductive tube sleeve 130 through the thermally conductive connecting plate 120. The control circuit board 140 is arranged in the heat pipe sleeve 130, and the control circuit board 140 is connected to the end of the light board 160 through the adapter circuit board 150. The two light boards 160 are respectively installed on the two side surfaces of the heat conducting mounting board 110, and LED lamp beads 161 are provided on the light board 160. The heat dissipation module 170 is disposed between the heat pipe sleeve 130 and the heat conduction mounting board 110.

[0034] Please refer to the above lamp holder 100 Figure 5 When the control circuit board controls the lamp bead on the lamp board 160 to emit light, the heat dissipation module 170 works synchronously, and the heat generated by the lamp bead is quickly guided to the thermally conductive mounting plate 110 through the lamp plate 160, and the thermally conductive mounting plate 110 is directed to the thermally conductive connection in turn The plate 120 and the heat conduction tube sleeve 130 are diffused outward; when the heat dissipation module 170 is in operation, the heat dissipation module is closer to the lamp beads and the lamp board, which can better diffuse the heat of the lamp board to the outside.

[0035] In addition, a control circuit board 140 is provided in the heat pipe sleeve 130, and a drive circuit is provided on the control circuit board 140, so that no drive module is needed, which can reduce the volume of the lamp holder 100.

[0036] Generally, due to circuit design requirements, a thin insulating layer is provided on the surface of the light board 160. The heat generated by the LED lamp beads 161 during operation needs to be conducted to the light board 160 through the insulating layer. The insulating layer can avoid the LED lamp. The circuit on the bead 161 is short-circuited, but it will affect the heat conduction, which is not conducive to the heat dissipation of the LED lamp bead 161. In such a traditional way, the thickness of the insulating layer is usually reduced to improve the heat conduction effect, but it is easy to bring a short circuit risk to the surface circuit of the LED lamp bead 161. In one embodiment, the area corresponding to the heat conduction surface of the bottom of the light board 160 and the LED lamp bead 161 is designed with an insulating layer to open windows, so that the heat conduction surface of the bottom of the LED light bead 161 directly contacts the light board 160, so that the LED lamp bead can be quickly 161 conducts heat generated during work. At the same time, the insulating layer under other areas of the LED lamp bead 161 can be made relatively thick because the effect on heat conduction is not considered, so that the surface circuit of the LED lamp bead 161 will not have a short circuit risk.

[0037] Further, the heat-conducting mounting board 110, the heat-conducting connecting plate 120 and the heat-conducting pipe sleeve 130 are an integrated structure. In this way, the heat-conducting mounting plate 110 can better transfer heat to the heat-conducting tube sleeve 130, the heat dissipation effect is better, and the production efficiency is higher.

[0038] In an embodiment, the thermally conductive mounting plate 110, the thermally conductive connecting plate 120, and the thermally conductive tube sleeve 130 are integrally formed by die-casting or CNC machining using pure copper, pure aluminum, olefin alloy or aluminum alloy. In this way, the thermal conductivity is relatively high, which can ensure that the heat generated by the LED lamp bead 161 diffuses out as quickly as possible.

[0039] In one embodiment, the thermally conductive mounting plate 110, the thermally conductive connecting plate 120, and the thermally conductive tube sleeve 130 are obtained by integrally molding with pure aluminum powder and 0.01% to 0.2% by weight of graphene powder by extrusion equipment. In this way, the materials of the heat-conducting mounting plate 110, the heat-conducting connecting plate 120, and the heat-conducting tube sleeve 130 are all olefin alloys, and the thermal conductivity is increased by 30%-100%, which can ensure that the heat generated by the LED lamp beads 161 spreads out as soon as possible.

[0040] In one embodiment, the thermally conductive mounting plate 110, the thermally conductive connecting plate 120, and the thermally conductive tube sleeve 130 are obtained by injecting 0.01% to 0.2% by weight of graphene powder into liquid aluminum through die casting. In this way, the materials of the heat-conducting mounting plate 110, the heat-conducting connecting plate 120 and the heat-conducting tube sleeve 130 are all olefin alloys, and the thermal conductivity is increased by 100% to 200%, which can ensure that the heat generated by the LED lamp beads 161 is diffused as soon as possible.

[0041] Further, please refer to image 3 A groove 111 adapted to the light board 160 is provided on the side surface of the heat-conducting mounting board 110, and a heat conductive glue is provided between the light board 160 and the bottom wall of the groove 111. Specifically, the thickness of the thermally conductive adhesive applied in the groove 111 is 0.2mm to 0.8mm; the thermally conductive adhesive contains 0.01% to 5% by weight of olefin alloy powder; the light board 160 and the The thermally conductive mounting plates 110 are connected and fixed by screws or by punching and riveting with rivets.

[0042] In this way, 0.01% to 5% by weight of olefin alloy powder is added to the thermal conductive glue, and after heating and stirring, it can be smeared in the groove 111. The smearing thickness is specifically controlled at 0.2mm to 0.8mm, and then the light board 160 is installed on the Use screws or rivets to connect and fix the thermal conductive glue, and the thermal conductive glue can dry naturally. The thermal conductive glue can better transfer the heat of the lamp board 160 to the thermal conductive mounting board 110, and the thermal conductive glue containing 0.01% to 5% by weight of olefin alloy powder can increase the thermal conductivity by 100% to 200%. Optionally, the side surface of the heat-conducting mounting board 110 does not need to be provided with a groove 111 that is compatible with the light board 160, and a heat-conducting glue is directly used to bond and fix the light board 160 on the heat-conducting mounting board 110.

[0043] In one embodiment, a light shield 162 is provided on the light board 160, and the light shield 162 is arranged corresponding to the LED lamp beads 161. The light-shielding cover 162 specifically adopts a binaural light-shielding cover 162, which can shield and collect the light emitted by the LED lamp beads 161 on the two sides of the light board 160. In this way, the light can be prevented from diverging and the light can be better concentrated.

[0044] In one embodiment, see Figure 4 versus Figure 5 The heat-conducting mounting plate 110 is used to extend into the reflective bowl 300 through the mounting hole of the protective housing 200 and through the mounting hole of the reflective bowl 300.

[0045] In another embodiment, the lamp cap 100 further includes a clamp cap 180. The clip head cover 180 is sleeved on the heat conduction tube sleeve 130, the clip head cover 180 is used to be clipped into the mounting hole of the reflector 300, and the heat conducting connecting plate 120 and the heat conducting mounting plate 110 are both used for Passing through the mounting hole of the protective shell 200 and the mounting hole of the reflective bowl 300 extend into the reflective bowl 300. In this way, after the clamping head cover 180 is clamped in the mounting hole of the reflective bowl 300, the lamp head 100 can be stably installed in the reflective bowl 300. In addition, a fan storage space is provided above the clip head cover (the area between the clip head cover and the heat-conducting mounting plate), which eliminates the need for traditional lamp heads to be set below the clip head cover (the area where the clip head is away from the heat-conducting mounting plate). The fan and the tail volume of the lamp head are reduced, so that the volume of the lamp head of the car lamp can be adapted to all vehicles equipped with a headlight assembly that can replace the halogen lamp, and a 100% non-destructive installation rate can be achieved.

[0046] Further, the clamp head cover 180, the thermally conductive mounting plate 110, the thermally conductive connecting plate 120 and the thermally conductive tube cover 130 are an integrated structure. In this way, the clamp head cover 180 can be integrally formed by die-casting or CNC machining with the same material as the thermally conductive mounting plate 110, the thermally conductive connecting plate 120, and the heat pipe. Therefore, it can be ensured that the heat generated by the LED lamp bead 161 is diffused as soon as possible, and the installation efficiency of the lamp holder 100 is high, and it can be installed in the reflector 300 more stably.

[0047] Specifically, the chuck sleeve 180 includes a heat-conducting ring plate 181 arranged around the heat-conducting tube sleeve 130 and a number of bumps 182 integrally connected with the heat-conducting ring plate 181. The bump 182 is used to be clamped in the mounting hole of the reflective bowl 300; the thermally conductive connecting plate 120 and the thermally conductive ring plate 181 are integrally connected.

[0048] In one embodiment, the thermally conductive connecting plate 120 includes a first thermally conductive connecting plate 121, a second thermally conductive connecting plate 122 and a third thermally conductive connecting plate 123. Both ends of the first thermally conductive connecting plate 121 are respectively integrally connected to the second thermally conductive connecting plate 122 and the third thermally conductive connecting plate 123, and the other end of the second thermally conductive connecting plate 122 is connected to the third thermally conductive The other end of the plate 123 is integrally connected with the heat conducting ring plate 181. The first heat-conducting connecting plate 121 and the end of the heat-conducting pipe sleeve 130 are provided with a space for accommodating the heat dissipation module 170, and the other end of the second heat-conducting connecting plate 122 and the other end of the third heat-conducting connecting plate 123 are respectively Located on opposite sides of the heat pipe sleeve 130. In this way, on the one hand, the heat conducting connecting plate 120 can better and quickly transfer the heat of the heat conducting mounting plate 110 to the heat pipe sleeve 130, on the other hand, it cooperates with the end of the heat pipe sleeve 130 to make the installation effect of the heat dissipation module 170 more stable. Specifically, the heat dissipation module 170 may be fixed on the heat-conducting ring plate 181 by using connectors 171 such as screws, bolts, and pins.

[0049] Specifically, the first thermally conductive connecting plate 121 is provided with a socket 1211 for the light board 160 to pass through, and the end of the light board 160 passes through the socket 1211 to be connected to the adapter circuit board 150. Specifically, there are two sockets 1211, and the two sockets 1211 are arranged corresponding to the two light boards 160. In this way, not only can the light board 160 be connected to the switching circuit board 150, but also the fixing effect of the light board 160 can be ensured.

[0050] In one embodiment, the adapter circuit board 150 includes a first adapter board 151, a second adapter board 152 and a third adapter board 153. The first adapter plate 151 is overlapped and matched with the first heat conducting connecting plate 121, and the first adapter plate 151 is connected to the light board 160. The second adapter board 152 is a flexible circuit board, one end of the second adapter board 152 is connected to the first adapter board 151, and the other end of the second adapter board 152 runs along the heat dissipation module 170 The side wall bypasses the heat dissipation module 170 and is connected to the third adapter board 153. The third adapter board 153 is connected to the control circuit board 140. In this way, the small size of the lamp holder 100 can be ensured, the reliable electrical connection between the control circuit board 140 and the lamp board 160 can be realized, and the connection effect is relatively stable.

[0051] In one embodiment, the heat dissipation module 170 is electrically connected to the control circuit board, and the control circuit board controls the operation of the heat dissipation module 170 when the lamp beads are operated.

[0052] In one embodiment, the heat dissipation module 170 is a heat dissipation fan. The heat dissipation fan is arranged between the heat conduction tube sleeve 130 and the heat conduction mounting plate 110, the air outlet side of the heat dissipation fan faces the port of the heat conduction tube sleeve, and the air inlet side of the heat dissipation fan faces the Thermally conductive mounting plate. When the cooling fan works, the cooling fan 170 blows the airflow in the reflective bowl 300 to the heat pipe sleeve 130 and blows it out of the protective casing 200, which can take away the heat on the heat conducting pipe sleeve 130, and at the same time, the cold airflow outside the protective casing 200 supplements the reflector. In the bowl 300, when the airflow near the heat-conducting mounting plate 110 is in contact with the lamp plate 160, the heat on the lamp plate 160 and the lamp beads can be taken away, so the lamp holder 100 has a better heat dissipation effect, can reduce the light decay speed, and can greatly Extend the service life of car lights.

[0053] In one embodiment, the heat dissipation module 170 is a copper pipe water circulation heat sink, and the copper pipe water circulation heat sink is welded to the heat pipe sleeve 130 and/or the heat conduction mounting plate 110 by cold welding technology. In this way, the heat of the lamp panel is directed to the copper tube water circulation fins, and the copper tube water circulation fins quickly dissipate the heat, which can keep the temperature of the lamp beads below 100 degrees for a long time when the lamp is on.

[0054] In one embodiment, the heat dissipation module 170 is an alkene alloy heat radiation convection heat sink, and the alkene alloy heat radiation convection heat sink is a multi-sheet alkene alloy welded to the heat conduction sleeve 130 and/or the heat pipe sleeve 130 and/or the heat pipe sleeve 130 and/or the heat pipe sleeve 130 and/or the heat pipe sleeve 130 and/or the heat pipe sleeve 130 and/or the heat pipe sleeve 130 and/or the heat pipe sleeve 130 by cold welding technology by cold welding technology Mentioned on the thermally conductive mounting plate 110. In this way, the graphene radiation is generated to dissipate heat from the air flowing to the surrounding environment, so that the temperature of the lamp beads can be maintained below 100 degrees for a long time when the lamp is on.

[0055] In one embodiment, the heat dissipation module 170 is a semiconductor electromagnetic cooling sheet. The semiconductor electromagnetic refrigeration sheet is electrically connected to the control circuit board, and the control circuit board controls the operation of the semiconductor electromagnetic refrigeration sheet while controlling the lamp beads to work. In this way, the temperature of the lamp bead can be maintained below 100 degrees for a long time when the lamp is on.

[0056] In an embodiment, the lamp holder 100 further includes a plug 190. The plug 190 is packaged with a fiberglass board 191 arranged in the heat conducting tube sleeve 130 and a conductive connector 192 installed on the fiberglass board 191. The conductive connector 192 is connected to the control circuit board through a wire. Electrical connection; the glass fiber board 191 is provided with ventilation holes 1911.

[0057] In another embodiment, the lamp holder 100 further includes a plug 190. The plug 190 includes a conductive wire and a conductive connector 192, and the conductive connector 192 is electrically connected to the control circuit board through the conductive wire. In this way, the conductive connector 192 can be directly connected to the power source to supply power to the control circuit board, the lamp beads, and the heat dissipation module 170.

[0058] In one embodiment, the LED lamp beads 161 include high beam LED lamp beads 161 and low beam LED lamp beads 161. The control circuit board 140 is used to control the low beam LED lamp beads 161 to turn on and control the high beam LED lamp beads 161 to turn on when receiving a low beam lighting command, and to control the high beam LED lamp beads 161 to turn on when receiving a high beam lighting command. The high beam LED lamp beads 161 are controlled to be turned on at the time or the high beam LED lamp beads 161 and the low beam LED lamp beads 161 are controlled to be turned on simultaneously. In this way, the lamp head 100 can not only realize the high-beam lighting function, but also realize the low-beam lighting function, which is powerful and has a better lighting effect.

[0059] Further, the LED lamp beads 161 also include a always-on LED lamp beads 161, and the control circuit board 140 is also used to control the always-on LED lamp beads 161 to turn on when it is determined that the motor vehicle is started, and when it is determined that all When the high beam LED lamp beads 161 or the low beam LED lamp beads 161 are turned on, the always-on LED lamp beads 161 are controlled to turn off.

[0060] In addition, specifically, the always-on LED lamp bead 161 has various light-emitting modes such as red, yellow, blue, green, and white, which can be controlled by downloading an APP from a mobile phone to achieve dimming and flashing functions. In addition, when the plug 190 of the car light is electrically connected to the power socket of a motor vehicle, the control circuit board can accept an input voltage ranging from 5 to 60V DC, which can improve safety and increase the type of vehicle installation: for example, Japanese electric The maximum input voltage of vehicle lights is 6V, the maximum input voltage of some engineering vehicle lights is 48V, and the maximum input voltage of truck lights is 27V.

[0061] In one embodiment, the number of the LED lamp beads 161 is 1-30; the color temperature of the LED lamp beads 161 is set at 1000K~30000K; the luminous flux of the LED lamp beads 161 is added to 100LM~10000LM; the LED lamp beads The total input and output power of the 161 is 1W-100W; the LED lamp bead 161 can achieve 360-degree refraction.

[0062] In one embodiment, see Figure 5 , A lighting device for a motor vehicle, comprising a protective housing 200, a reflective bowl 300, and the lamp holder 100 described in any of the above embodiments. The reflective bowl 300 is installed in the protective shell 200. The heat-conducting mounting plate 110 of the lamp holder 100 penetrates the mounting hole of the protective housing 200 and the mounting hole of the reflective bowl 300 to extend into the reflective bowl 300.

[0063] The above-mentioned motor vehicle lighting device includes the lamp cap 100, which has the same technical effect as the lamp cap 100, and will not be repeated.

[0064] In one embodiment, a motor vehicle includes the lamp holder 100 described in any one of the above embodiments.

[0065] The above-mentioned motor vehicle includes the lamp cap 100, which has the same technical effect as the lamp cap 100, and will not be repeated.

[0066] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, All should be considered as the scope of this specification.

[0067] The above-mentioned embodiments only express several implementation modes of the present invention, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.