Car lamp module and car lamp

Abstract

The invention provides a car lamp module which comprises a circuit board, a lampshade, a light source and a car lamp shell and further comprises a metal antenna, the metal antenna is fixed to the car lamp shell, the light emitting direction is set to be the upper portion, the lampshade is arranged above the car lamp shell, the metal antenna is arranged around the lampshade, and the metal antenna is fixed to the circuit board. The light rays sequentially penetrate through the metal antenna and the lampshade to be emitted; the circuit board is arranged below the automobile lamp shell; the metal antenna is provided with an elastic foot which extends towards the direction of the circuit board, and the automobile lamp shell is provided with a supporting column which is used for fixing and positioning the elastic foot; the circuit board is provided with a metal contact disc which is connected with the tail end of the elastic pin. And the light source is opposite to the lampshade and is arranged on the circuit board. After the technical scheme is adopted, the cost of the metal antenna is far lower than that of a touch diaphragm, and the cost is more advantageous; a stable touch effect is achieved; the reading lamp can also have a good touch effect in an abnormal environment.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle lamps, and in particular to a vehicle lamp module and a vehicle lamp. Background Art

[0002] In the prior art, vehicle-mounted reading lights usually use a touch film pasted on the back of the lampshade, and use an FPC (Flexible Printed Circuit) connector to connect to the PCBA. When a passenger touches the surface of the lampshade, the MCU detects the change in capacitance of the touch area through the capacitive sensing area on the touch film. When the capacitance change reaches a certain condition, the system determines that the touch is valid and the reading light is turned on. However, in this technical solution, the price of the touch film is relatively expensive.

[0003] In addition, there is a technical solution in the prior art that uses a metal antenna to replace the touch film. However, when using the metal antenna, the metal antenna is prone to deformation due to its material characteristics, resulting in unstable connection between the metal antenna and other components. In addition, the use of metal antennas to replace touch films in reading has the problem of false touches. When the light-emitting area / normal touch area of ​​the reading light is very small, the false touch problem of the metal antenna will be more obvious. Among them, false touch means that the reading light can be lit by touching with a finger outside the light-emitting area of ​​the reading light. The light-emitting area of ​​the reading light is the normal touch area.

[0004] In addition, the vehicle-mounted reading lights in the prior art cannot adjust the brightness of the reading lights and other lighting conditions in real time according to environmental conditions, and cannot adapt to different driving environments and meet the different needs of drivers.

[0005] Therefore, the art is based on providing a vehicle-mounted reading light that is low in cost, effectively avoids accidental touches and can adapt to different driving environments. Summary of the invention

[0006] In order to overcome the above technical defects, an object of the present invention is to provide a vehicle lamp module and a vehicle lamp.

[0007] Specifically, the present invention discloses a vehicle lamp module, comprising:

[0008] A circuit board, a lampshade, a light source fixed on the circuit board and a car lamp housing, wherein the light source emits light and further comprises a metal antenna, wherein the metal antenna is fixed below the car lamp housing; assuming that the light emission direction is upward, the lampshade is arranged above the car lamp housing, the metal antenna is arranged around the lampshade, and the light is emitted through the lampshade;

[0009] The metal antenna is provided with an elastic foot extending toward the circuit board, and the lamp housing is provided with a support column for fixing and positioning the elastic foot;

[0010] The circuit board is provided with a metal contact plate connected with the end of the elastic foot; the light source is opposite to the lampshade.

[0011] Preferably, the metal antenna is used to sense capacitance, and when the capacitance changes, the circuit board is used to receive the capacitance change through the elastic foot;

[0012] When the capacitance change exceeds a threshold value, the circuit board is used to light up the light source, and the light source emits light, and the light is emitted through the lampshade.

[0013] Preferably, the metal antenna comprises an inner circle antenna and an outer circle antenna, the outer circle antenna is nested outside the inner circle antenna, the shape of the inner circle antenna corresponds to the shape of the lampshade, and the inner circle antenna is arranged around the lampshade;

[0014] The inner ring antenna and the outer ring antenna are respectively provided with a first elastic foot and a second elastic foot, extending toward the circuit board;

[0015] The lamp housing is provided with a first support column and a second support column, which extend toward the circuit board and are used to fix the first elastic foot and the second elastic foot respectively;

[0016] The inner ring antenna is used for sensing capacitance, and when the capacitance changes, the circuit board is used for receiving the change of the capacitance through the first elastic foot.

[0017] Preferably, the first elastic foot includes a first extension portion and a first contact portion at the end, the first support column is provided with a first fixing groove for accommodating and fixing the first extension portion, and the first contact portion is connected to the metal contact plate;

[0018] The second elastic foot includes a second extension portion and a second contact portion at the end. The second support column is provided with a second fixing groove for accommodating and fixing the second extension portion. The second contact portion is connected to the metal contact plate.

[0019] Preferably, the first elastic foot is integrally formed with the inner ring antenna, and the second elastic foot is integrally formed with the outer ring antenna.

[0020] Preferably, a positioning column is provided on the headlight housing for positioning the metal antenna; the metal antenna is fixed to the headlight housing by heat riveting.

[0021] Preferably, it also includes a light guide and an MCU; the light guide is located between the lampshade and the light source, and is used to reflect the light emitted by the light source to the lampshade; the MCU is arranged on the circuit board, and is used to control the lighting and extinguishing of the light source according to the capacitance change, and when the capacitance change exceeds a threshold value, the MCU is used to light the light source.

[0022] Another aspect of the present invention provides a vehicle lamp, comprising any vehicle lamp module as described above.

[0023] Preferably, the vehicle lamp comprises two vehicle lamp modules, a vehicle lamp cover, a light guide and a vehicle lamp rear cover; the two vehicle lamp modules are a first vehicle lamp module and a second vehicle lamp module, respectively comprising a first lampshade and a second lampshade, the first lampshade and the second lampshade are connected with the vehicle lamp cover by buckles, and are located between the vehicle lamp cover and the vehicle lamp housing;

[0024] The first lampshade frame and the second lampshade frame are symmetrically arranged on the lamp cover, corresponding to the first lampshade and the second lampshade respectively, and the light is emitted from the lamp through the first lampshade and the second lampshade; the circuit board is arranged under the lamp housing and is fixedly connected to the lamp rear cover; the lamp rear cover is fixedly connected to the lamp housing to form a accommodating space for accommodating the circuit board.

[0025] Preferably, any of the above-mentioned vehicle lights is a vehicle-mounted reading light.

[0026] Compared with the prior art, the above technical solution has the following beneficial effects:

[0027] 1. In the present invention, metal antennas are used to reduce the cost of car lights. In addition, the metal antenna in the present invention includes an inner ring antenna and an outer ring metal, wherein the inner ring antenna is used to sense the capacitance change of the passenger's finger touch, and a narrow design is used to concentrate the touch area in the reading light emitting area to avoid accidental touch; the outer ring metal antenna is used to isolate and protect the inner ring antenna from the surrounding environment, and the inner and outer ring metal antennas are fixed to the back of the lampshade by a hot riveting process to ensure the flatness of the antenna system, so as to ensure a stable touch effect.

[0028] 2. The support column cooperates with the elastic foot of the metal antenna to ensure the stability of the connection.

[0029] 3. The MCU sets the capacitance threshold to adapt itself as the environment changes, so that the reading light can have a good touch effect even in abnormal environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of a vehicle light module according to an embodiment of the present invention;

[0031] Figure 2A schematic diagram of a metal antenna in a vehicle light module according to another embodiment of the present invention;

[0032] Figure 3 for Figure 2 A schematic structural diagram of a vehicle light module in an embodiment;

[0033] Figure 4 for Figure 2 A schematic structural diagram of a vehicle light module in an embodiment;

[0034] Figure 5 FIG. 4 is an exploded view of a vehicle lamp according to an embodiment of the present invention.

[0035] Reference numerals:

[0036] 10-circuit board, 11-metal contact plate;

[0037] 20-lampshade, 21-first lampshade, 22-second lampshade;

[0038] 30-metal antenna, 31-inner ring antenna, 311-first elastic foot, 312-first extension part, 313-first contact part, 32-outer ring antenna, 321-second elastic foot, 322-second extension part, 323-second contact part;

[0039] 40 - lamp housing, 41 - first supporting column, 411 - first fixing groove, 42 - second supporting column, 421 - second fixing groove, 43 - positioning column;

[0040] 50 - light guide;

[0041] 60-headlight cover;

[0042] 70-Headlight rear cover. DETAILED DESCRIPTION

[0043] The advantages of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments.

[0044] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0045] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0046] In the description of the present invention, it is necessary to understand that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0047] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0048] like Figure 1 FIG. 1 is a schematic diagram of a vehicle lamp module in an embodiment of the present invention. The vehicle lamp module in this embodiment includes: a circuit board 10, a lampshade 20, a light source (not shown) fixed on the circuit board 10, and a vehicle lamp housing 40. In addition, it also includes a metal antenna 30, which is fixed below the vehicle lamp housing 40 ( Figure 1 (not shown), assuming that the light emitted by the light source is emitted in an upward direction, the lampshade 20 is arranged above the lamp housing 40, the metal antenna 30 is arranged around the lampshade 20, and the light is emitted through the lampshade 20; the circuit board 10 is arranged below the lamp housing 40; the metal antenna 30 is also provided with an elastic foot extending toward the circuit board 10; the circuit board 10 is provided with a metal contact plate 11, which is connected to the end of the elastic foot.

[0049] In this embodiment, the metal antenna 30 is used to sense capacitance. When the capacitance changes, the circuit board 10 is used to receive the capacitance change through the elastic foot. When the capacitance change exceeds a threshold, the circuit board 10 is used to light up the light source, and the light source emits light, which is emitted through the lampshade 20. If the current light source is already in a lit state, when the capacitance change exceeds a threshold, the circuit board 10 is used to turn off the light source. In addition, considering the material property of the metal antenna 30 that is easy to deform, a support column is provided on the lamp housing 40. The support column deforms the slender extension of the metal antenna 30 through a suitable support point to generate sufficient holding force, so that the metal contact of the metal antenna 30 can stably contact the metal contact pad 11 on the circuit board 10.

[0050] In this embodiment, a metal antenna 30 is used to sense capacitance. Since the metal antenna 30 is a stamped part, it can be directly connected to the circuit board 10. When the touch function can be realized, the cost is much lower than that of a touch film. In addition, the FPC connector is saved, which has a cost advantage.

[0051] Figure 2 , Figure 3 , Figure 4 FIG. 1 is a schematic diagram of a vehicle light module according to another embodiment of the present invention. Figure 2-Figure 4 It can be seen that in this embodiment, the metal antenna 30 includes an inner ring antenna 31 and an outer ring antenna 32, the outer ring antenna 32 is nested outside the inner ring antenna 31, the shape of the inner ring antenna 31 corresponds to the shape of the lampshade 20, and the inner ring antenna 31 is arranged around the lampshade 20. The lampshade 20 in this embodiment is a rectangular shape, see Figure 2 The shapes of the inner ring antenna 31 and the outer ring antenna 32 are also similar to the shape of the lampshade 20, and are rectangular structures. In other embodiments, the lampshade 20 can be in other shapes, and the shape of the metal antenna 30 can also be adjusted accordingly. The present invention will not be described in detail here.

[0052] See also Figure 2 It can be seen that in this embodiment, the inner circle antenna 31 and the outer circle antenna 32 are respectively provided with a first elastic foot 311 and a second elastic foot 321, which extend toward the circuit board 10; the headlight housing 40 is provided with a first support column 41 and a second support column 42, which extend toward the circuit board 10, and are used to fix the first elastic foot 311 and the second elastic foot 321 respectively.

[0053] In this embodiment, the inner ring antenna 31 is used to sense capacitance, and when the capacitance changes, the circuit board 10 is used to receive the capacitance change through the first elastic foot 311. A voltage signal synchronized with the inner ring antenna 31 is applied to the outer ring antenna 32, so that the signal of the inner ring antenna 31 is more centralized, and the isolation effect of the outer ring antenna 32 also reduces the interference of the external environment to the inner ring antenna 31. In addition, the inner ring antenna 31 can be set to sense the capacitance change of the passenger's finger touch, and the touch area is concentrated in the light-emitting area of ​​the headlight by using a narrow design to avoid accidental touch.

[0054] Combination Figure 2 , Figure 4 It can be seen that the first elastic leg 311 includes a first extension portion 312 and a first contact portion 313 at the end, the first support column 41 is provided with a first fixing groove 411 for accommodating and fixing the first extension portion 312, and the first contact portion 313 is connected to the metal contact pad 11 provided on the circuit board 10; the second elastic leg 321 includes a second extension portion 322 and a second contact portion 323 at the end, the second support column 42 is provided with a second fixing groove 421 for accommodating and fixing the second extension portion 322, and the second contact portion 323 is connected to the metal contact pad 11 provided on the circuit board 10. In this embodiment, the first elastic leg 311 is integrally formed with the inner ring antenna 31, and the second elastic leg 321 is integrally formed with the outer ring antenna 32.

[0055] In this embodiment, the inner ring antenna 31 is used to sense external actions. If an external touch or other action occurs, the capacitance at the inner ring antenna 31 changes accordingly, and the capacitance change value is transmitted to the circuit board 10 through the first elastic foot 311. The circuit board 10 further controls the power supply of the car light according to the set sensing program.

[0056] In order to further ensure a stable touch effect, such as Figure 3 As shown, in this embodiment, a plurality of positioning posts 43 are provided on the headlight housing 40 for positioning the metal antenna 30, and the inner ring antenna 31 and the outer ring antenna 32 of the metal antenna 30 are fixed to the back of the headlight housing 40 by hot riveting to ensure the flatness of the metal antenna 30 and to ensure a stable touch effect.

[0057] In another embodiment, the headlight module further includes a light guide 50 and an MCU (microcontroller unit). The light guide 50 is opposite to the light source, and is located between the light source and the lampshade 20. The light guide 50 reflects the light emitted by the light source to the lampshade 20, so that it is emitted from the lampshade 20, which can further improve the transmission efficiency of the light and is convenient for adapting to the space design inside the headlight. In this embodiment, the light guide 50 is fixed to the headlight housing 40 by a snap-fit ​​structure. In other embodiments, the light guide 50 can be fixed inside the headlight by other connection methods, which is not limited by the present invention. The MCU is arranged on the circuit board 10. In this embodiment, the internal software algorithm of the MCU enables the capacitive touch reference value of the touch button to adapt itself with the change of the environment, so that the reading light can also have a good touch effect in an abnormal environment. Specifically, when the hand is not touching, the surrounding environmental conditions, such as humidity, etc., change, and the MCU receives the capacitance change caused by the environmental change. The capacitance reference value inside the MCU will be adjusted in real time according to the capacitance change caused by the environment, so that the level of the reference value is consistent with the surrounding environment.

[0058] In another embodiment of the present invention, a vehicle-mounted reading light is provided. Figure 4 In this embodiment, the vehicle-mounted reading lamp comprises two vehicle lamp modules, a vehicle lamp front cover 60 and a vehicle lamp rear cover 70 in the previous embodiment.

[0059] The two lamp modules are the first lamp module and the second lamp module, which respectively include the first lampshade 21 and the second lampshade 22. The first lampshade 21 and the second lampshade 22 are connected with the lamp cover 60 by snapping, and are located between the lamp cover 60 and the lamp housing 40. The lamp cover 60 is fixedly connected with the lamp housing 40 by snapping. The lamp cover 60 is symmetrically provided with the first lampshade 21 frame and the second lampshade 22 frame, which correspond to the first lampshade 21 and the second lampshade 22 respectively. The light is emitted from the lamp through the first lampshade 21 and the second lampshade 22. The circuit board 10 is fixedly connected with the lamp rear cover 70. The lamp rear cover 70 is fixedly connected with the lamp housing 40 by screws, forming a storage space for accommodating the circuit board 10. It should be noted that the specific arrangement and quantity of the lamp modules can be adjusted accordingly according to actual needs in other embodiments, and the present invention will not be repeated here.

[0060] Even though the vehicle-mounted reading lamp in this embodiment has a small light-emitting area (i.e., the lampshade area), the inner ring antenna 31 and the outer ring antenna 32 are provided for touch sensing and protection isolation, respectively, thereby reducing the probability of false touch to the greatest extent, and the support column is used to ensure the stable connection between the metal antenna 30 and the circuit board 10, thereby ensuring a stable touch effect, which can provide the driver with a better user experience.

[0061] It should be noted that the embodiments of the present invention have better practicability and do not impose any form of limitation on the present invention. Any technician familiar with the field may use the technical content disclosed above to change or modify it into an equivalent effective embodiment. However, any modification or equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A vehicle light module, comprising: A circuit board, a lampshade, a light source fixed on the circuit board and a car lamp housing, wherein the light source emits light, and is characterized in that: It also includes a metal antenna, which is fixed below the lamp housing. Assuming that the light emission direction is upward, the lampshade is arranged above the lamp housing, the metal antenna is arranged around the lampshade, and the light is emitted through the lampshade; The metal antenna is provided with an elastic foot extending toward the circuit board, and the lamp housing is provided with a support column for fixing and positioning the elastic foot; The circuit board is provided with a metal contact plate connected to the end of the elastic foot; the light source is opposite to the lampshade.

2. The vehicle light module according to claim 1, characterized in that: The metal antenna is used to sense capacitance, and when the capacitance changes, the circuit board is used to receive the change of the capacitance through the elastic foot; When the change of the capacitance exceeds a threshold value, the circuit board is used to light up the light source, and the light source emits light, and the light is emitted through the lampshade.

3. The vehicle light module according to claim 2, characterized in that: The metal antenna comprises an inner circle antenna and an outer circle antenna, wherein the outer circle antenna is nested outside the inner circle antenna, and the inner circle antenna is arranged around the lampshade; The inner ring antenna and the outer ring antenna are respectively provided with a first elastic foot and a second elastic foot, extending toward the circuit board; The lamp housing is provided with a first support column and a second support column, which extend toward the circuit board and are used to fix the first elastic foot and the second elastic foot respectively; The inner ring antenna is used for sensing capacitance, and when the capacitance changes, the circuit board is used for receiving the change of the capacitance through the first elastic foot.

4. The vehicle lamp module according to claim 3, characterized in that: The first elastic foot includes a first extension portion and a first contact portion at the end, the first support column is provided with a first fixing groove for accommodating and fixing the first extension portion, and the first contact portion is connected to the metal contact plate; The second elastic foot includes a second extension portion and a second contact portion at the end. The second support column is provided with a second fixing groove for accommodating and fixing the second extension portion. The second contact portion is connected to the metal contact plate.

5. The vehicle lamp module according to claim 4, characterized in that: The first elastic foot is integrally formed with the inner ring antenna, and the second elastic foot is integrally formed with the outer ring antenna.

6. The vehicle lamp module according to claim 5, characterized in that: The lamp housing is provided with a positioning column for positioning the metal antenna; The metal antenna is fixed on the vehicle lamp housing by heat riveting.

7. The vehicle lamp module according to claim 6, characterized in that: Including light guide and MCU; The light guide is located between the lampshade and the light source, and is used to reflect the light emitted by the light source to the lampshade; The MCU is arranged on the circuit board, and is used to control the lighting and extinguishing of the light source according to the capacitance change. When the capacitance change exceeds a threshold, the MCU is used to light the light source.

8. A vehicle lamp, characterized in that: It comprises a vehicle light module as described in any one of claims 1-7.

9. The vehicle lamp according to claim 8, characterized in that: Includes two headlight modules, a headlight cover and a headlight rear cover; The two headlight modules are a first headlight module and a second headlight module, which respectively include a first lampshade and a second lampshade, wherein the first lampshade and the second lampshade are connected with the headlight cover by buckles and are located between the headlight cover and the headlight housing; The headlight cover is symmetrically provided with a first lampshade frame and a second lampshade frame, which correspond to the first lampshade and the second lampshade respectively, and the light is emitted from the headlight through the first lampshade and the second lampshade; The circuit board is arranged below the lamp housing and is fixedly connected to the rear cover of the lamp; The rear cover of the vehicle lamp is fixedly connected to the vehicle lamp housing to form a receiving space for receiving the circuit board.

10. The vehicle lamp according to any one of claims 8 to 9, characterized in that: The vehicle light is a vehicle-mounted reading light.

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