A vehicle reading lamp

Abstract

The utility model provides a kind of vehicle-mounted reading lamp, it is related to the technical field of automobile lamps and lanterns, comprising: shell, light emitting device and control circuit board;Shell inside is equipped with assembly cavity, and is equipped with the first installation opening being communicated with assembly cavity;Light emitting device includes adjustable angle installation in shell's lamp holder and the LED light source component being fixed in lamp holder, lamp holder can be switched and positioned between first angle and second angle, and its front end is equipped with the light-transmitting portion corresponding with first installation opening;Control circuit board is set in assembly cavity, and is electrically connected with LED light source component, for according to the switching of lamp holder angle, the power output of LED light source component is controlled.Such, make it have the advantage that light beam direction can be adjusted, while controlling light source power to realize different functions.

Description

Technical Field

[0001] This utility model relates to the field of automotive lighting technology, and in particular to a vehicle-mounted reading light. Background Technology

[0002] Reading lights are typically installed in car cabins to meet users' needs for reading or observing objects. Existing car cabin reading lights usually use white or warm white LED light sources. Their illumination angle is relatively limited, and the illuminated area cannot be flexibly adjusted; furthermore, ordinary LED light sources typically lack power adjustment functionality, making their overall function rather limited.

[0003] Therefore, a vehicle reading light capable of adjusting the beam direction and controlling the light source power to achieve different functions needs to be designed. Utility Model Content

[0004] The purpose of this utility model is to address the defects and shortcomings of the existing technology by providing a vehicle reading light that solves at least one of the aforementioned technical problems. It has the advantage of being able to adjust the beam direction and control the light source power to achieve different functions.

[0005] To achieve the above objectives, this utility model provides a vehicle-mounted reading light, comprising: The housing has an assembly cavity inside and a first mounting port communicating with the assembly cavity; The light-emitting device includes an adjustable lamp holder mounted within the housing and an LED light source assembly fixed within the lamp holder. The lamp holder can be switched and positioned between a first angle and a second angle, and its front end is provided with a light-transmitting part corresponding to the first mounting port. A control circuit board is disposed in the assembly cavity and electrically connected to the LED light source assembly, and is used to control the power output of the LED light source assembly according to the switching of the lamp holder angle.

[0006] Optionally, the lamp holder can be installed and positioned with an adjustable angle through a rotating structure and a locking structure disposed between the housing and the lamp holder.

[0007] Optionally, the rotating structure includes: Two rotating shafts are respectively disposed inside the housing and arranged opposite to each other; Two shaft holes are respectively provided on the two sides of the lamp holder and are rotatably engaged with the rotating shaft; The locking structure includes: A first locking protrusion is disposed inside the housing; The first locking track is provided on the side of the lamp holder corresponding to the shaft hole and extends along an arc with the shaft hole as the center. The first locking track has a first locking position and a second locking position corresponding to the first angle and the second angle, respectively, for the first locking protrusion to hold and position.

[0008] Optionally, the first locking track includes an arc-shaped groove segment and a locking protrusion located in the arc-shaped groove segment. The locking protrusion and the arc-shaped grooves on both sides respectively form the first locking position and the second locking position.

[0009] Optionally, the lamp holder has a shaft hole mounting section and a locking protrusion mounting section on its side; The shaft hole mounting section is provided along the extending direction of the lamp holder and communicates with the shaft hole for the rotating shaft to slide into and be installed. The locking protrusion mounting section is arranged along the extension direction of the lamp holder and communicates with the first locking track for the first locking protrusion to slide into and be installed.

[0010] Optionally, the first locking position and the second locking position of the first locking track are respectively provided with a first tactile switch and a second tactile switch electrically connected to the control circuit board. The control circuit board identifies the angular position of the lamp holder according to the on / off state of the first tactile switch and the second tactile switch, and controls the power output of the LED light source assembly through PWM.

[0011] Optionally, the housing is provided with a second locking protrusion at a position mirrored with respect to the center of the light-emitting device; the lamp holder is provided with a clearance groove matching the second locking protrusion at a position mirrored with respect to the center of the light-emitting device.

[0012] Optionally, the housing includes a front shell and a rear cover; The front end of the front shell is provided with the first mounting port, and the rear end is provided with the second mounting port. The second mounting port is provided with several slots around its periphery. The rear cover is provided with several latches on its periphery that engage with the latches, so that the rear cover is latched onto the rear end of the front shell.

[0013] Optionally, the light-transmitting part is a lens.

[0014] Optionally, the light emitted by the LED light source assembly has a wavelength of 560nm to 590nm.

[0015] Compared with the prior art, the advantages of this application are: This vehicle-mounted reading light integrates an adjustable lamp holder structure with the power control function of the control circuit board. This allows the lamp holder to not only change the direction of illumination at different angles but also simultaneously adjust the power output of the LED light source components, achieving intelligent matching of illumination direction and brightness mode. This provides the advantage of being able to adjust the beam direction while controlling the light source power to achieve different functions. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 This is a bottom view of an embodiment of the present utility model; Figure 3 for Figure 2 A sectional view along line AA. Figure 4 This is a partial exploded view of an embodiment of the present utility model; Figure 5 This is another exploded view of a portion of the structure of an embodiment of the present utility model; Figure 6 This is a side view of the lamp holder of this utility model; Figure 7 This is another side view of the lamp holder of this utility model; Figure 8 This is a partial exploded view of the light-emitting device according to an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures 100-Car reading light; 1-Housing shell; 11-Front shell; a-Assembly cavity; b-First mounting port; d-Allowing groove; e-Bayonet; 12-Rear cover; 121-Latch tongue; f-Socket; 2-Light-emitting device; 21-Lamp holder; 211-Lens; 22-LED light source assembly; 221-Lamp board; 222-LED lamp beads; 3-Control circuit board; 41 - Rotating shaft; o - Shaft hole; 51-First locking protrusion; 52-First locking track; 521-Clamping protrusion; j1-First locking position; j2-Second locking position; 53-Second locking protrusion; 61 - Shaft hole mounting section; 62 - Locking protrusion mounting section. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] It should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "back," "side," and "circumferential" used in this utility model to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used to distinguish multiple parts or structures with the same or similar structures, and do not indicate any special limitation on the arrangement order or connection relationship.

[0021] Please refer to Figures 1 to 8 This utility model embodiment provides a vehicle-mounted reading light 100, which is typically installed on the ceiling near the door side of a car cabin (not shown in the figure) to concentrate the light beam in front of the passenger seat or in other directions to provide auxiliary functions such as reading, lighting, or mosquito repellency for the passenger. The vehicle-mounted reading light 100 includes: a housing 1, a light-emitting device 2, and a control circuit board 3.

[0022] The housing 1 has an assembly cavity a inside and a first mounting port b communicating with the assembly cavity a for mounting the light-emitting device 2.

[0023] The light-emitting device 2 includes a lamp holder 21 and an LED light source assembly 22. The lamp holder 21 is angle-adjustably mounted within the housing 1, and the LED light source assembly 22 is fixed within the lamp holder 21. The lamp holder 21 can be switched and positioned between a first angle and a second angle, and its front end has a light-transmitting portion corresponding to the first mounting opening b. Thus, the light beam emitted by the LED light source assembly 22 can change its illumination direction as the angle of the lamp holder 21 relative to the housing 1 changes, thereby achieving directional output of the light beam at different angles. Understandably, the LED light source assembly 22 may include a lamp plate 221 and at least one LED bead 222 mounted on the lamp plate 221. Optionally, the light-transmitting portion is a lens 211, which allows the light to form the desired beam shape and illumination range, improving the usability and comfort of reading or lighting.

[0024] The control circuit board 3 is disposed within the assembly cavity a and electrically connected to the LED light source assembly 22. It controls the power output of the LED light source assembly 22 according to the angle switching of the lamp holder 21. Optionally, trigger switches electrically connected to the control circuit board 3 can be respectively installed at the first and second angle positions of the lamp holder 21. Thus, when the lamp holder 21 switches to different angles, the trigger switches output different control signals to the control circuit board 3, and the control circuit board 3 automatically adjusts the power output of the LED light source assembly 22 accordingly to achieve switching between different brightness or luminous effect modes. Specifically, the control circuit board 3 can be a PCBA circuit board; and the specific method by which the control circuit board 3 adjusts the LED light source power according to the trigger signals can be implemented using existing technology, which will not be elaborated here.

[0025] This vehicle-mounted reading light 100 integrates the adjustable lamp holder 21 with the power control function of the control circuit board 3. This allows the lamp holder 21 to not only change the direction of illumination at different angles but also simultaneously adjust the power output of the LED light source assembly 22, thereby achieving intelligent matching between the direction of illumination and the brightness mode. This provides the advantage of being able to adjust the beam direction while controlling the light source power to achieve different functions.

[0026] Alternatively, please refer to Figure 4 and Figure 5 In this embodiment, the lamp holder 21 achieves adjustable angle installation and positioning through a rotating structure and a locking structure located between the housing 1 and the lamp holder 21.

[0027] Specifically, the rotating structure includes two rotating shafts 41 and two shaft holes o. Optionally, the two rotating shafts 41 are respectively disposed within the housing 1 and arranged opposite to each other. Specifically, the two rotating shafts 41 are respectively disposed on the mounting plate within the housing 1. The two shaft holes o are respectively disposed on both sides of the lamp holder 21 and rotatably engage with the rotating shafts 41. Of course, in some other embodiments, the rotating shafts 41 can also be disposed on both sides of the lamp holder 21, while the shaft holes o that rotatably engage with the rotating shafts 41 are disposed within the housing 1, as long as the rotatable connection of the lamp holder 21 relative to the housing 1 can be achieved, and no specific limitation is made here.

[0028] The locking structure includes a first locking protrusion 51 and a first locking track 52. The first locking protrusion 51 is disposed inside the housing 1; the first locking track 52 is disposed on the side of the lamp holder 21 corresponding to the shaft hole o, extending along an arc centered on the shaft hole o; the first locking track 52 has a first locking position j1 ​​and a second locking position j2 corresponding to a first angle and a second angle, respectively, for the first locking protrusion 51 to engage and position. When the lamp holder 21 rotates around the rotation shaft 41 to different angular positions, the first locking protrusion 51 can engage in the corresponding locking position, achieving stable positioning of the lamp holder 21 at different angles.

[0029] Thus, when the user adjusts the angle of the lamp holder 21, the lamp holder 21 can rotate smoothly and be reliably locked at the preset angle, which not only prevents the angle from shifting during vehicle vibration, but also ensures the accuracy and consistency of the illumination direction.

[0030] Alternatively, please refer to Figure 5 and Figure 6 In this embodiment, the first locking track 52 includes an arc-shaped groove segment and a locking protrusion 521 located in the arc-shaped groove segment. The locking protrusion 521 and the arc-shaped groove walls on both sides respectively form a first locking position j1 ​​and a second locking position j2.

[0031] Specifically, the arc-shaped groove segment forms two locking areas sequentially along the arc path, corresponding to the first locking position j1 ​​and the second locking position j2 of the lamp holder 21, respectively. A protruding structure, namely the locking protrusion 521, is formed in the arc-shaped groove segment. The height of the locking protrusion 521 is slightly higher than the bottom of the arc-shaped groove, and its two sides form the first locking position j1 ​​and the second locking position j2 with the adjacent arc-shaped groove wall, respectively.

[0032] When the lamp holder 21 rotates around the rotating shaft 41, the first locking protrusion 51 set in the housing 1 slides along the arc-shaped groove. When it passes the clamping protrusion 521, it will generate a certain elastic deformation or frictional resistance due to structural interference. Thus, after passing the clamping protrusion 521, it will be stably clamped in the locking position corresponding to the arc-shaped groove wall on the other side, so as to achieve reliable positioning.

[0033] For ease of installation of lamp holder 21, optionally, please refer to... Figure 4 and Figure 6In this embodiment, the lamp holder 21 has a shaft hole mounting section 61 and a locking protrusion mounting section 62 on its side. The shaft hole mounting section 61 is arranged along the extending direction of the lamp holder 21 and communicates with the shaft hole 0, for the rotating shaft 41 to slide into and be installed. The locking protrusion mounting section 62 is arranged along the extending direction of the lamp holder 21 and communicates with the first locking track 52, for the first locking protrusion 51 to slide into and be installed. Through the guiding effect of the shaft hole mounting section 61 and the locking protrusion mounting section 62, the rotating shaft 41 and the locking protrusion can slide directly into and be installed along the extending direction of the lamp holder 21 without having to be forcibly pressed in from the end of the shaft hole 0 or the locking track. This simplifies the assembly steps and reduces the positioning difficulty and component wear during the assembly process.

[0034] To achieve linkage between the angle adjustment of lamp holder 21 and the power control function of control circuit board 3, optionally, please refer to... Figure 5 and Figure 6 In this embodiment, the first locking position j1 ​​and the second locking position j2 of the first locking track 52 are respectively provided with a first tactile switch (not shown in the figure) and a second tactile switch (not shown in the figure) electrically connected to the control circuit board 3. When the lamp holder 21 rotates to the first angle, the first locking protrusion 51 engages in the first locking position j1 ​​and triggers the first tactile switch; when the lamp holder 21 rotates to the second angle, the first locking protrusion 51 engages in the second locking position j2 and triggers the second tactile switch. The control circuit board 3 identifies the angular position of the lamp holder 21 according to the on / off state of the first and second tactile switches, and controls the power output of the LED light source assembly 22 through PWM (Pulse Width Modulation). Specifically, the control circuit board 3 adjusts the average driving current of the LED light source assembly 22 by changing the duty cycle of the PWM signal, thereby achieving precise control of the light source brightness. For example, when the lamp holder 21 is at a first angle (such as in reading mode), the control circuit board 3 outputs a PWM signal with a higher duty cycle to increase the brightness of the LED light source component 22; when the lamp holder 21 is at a second angle (such as in mosquito-repellent mode), the control circuit board 3 outputs a PWM signal with a lower duty cycle to reduce power output and achieve soft lighting or specific functional lighting. In this way, users do not need to manually adjust the light brightness; the lighting effect can be automatically switched according to the angle of the lamp holder 21, thereby improving ease of use and intelligence. Specifically, the control circuit board 3 controlling the power output of the LED light source component 22 via PWM is existing technology and will not be elaborated further here.

[0035] To allow for flexible, symmetrical installation of the vehicle reading light 100, optionally, please refer to... Figure 4 , Figure 5 and Figure 7In this embodiment, the housing 1 is provided with a second locking protrusion 53 at a position mirrored with respect to the center of the light-emitting device 2 by the first locking protrusion 51; the lamp holder 21 is provided with a clearance groove d that matches the second locking protrusion 53 at a position mirrored with respect to the center of the light-emitting device 2 by the first locking track 52.

[0036] Specifically, the center of the light-emitting device 2 can be used as the origin of the reference coordinate system. If the first locking protrusion 51 is located in the fourth quadrant, then the position of the first locking protrusion 51 symmetrical about the center of the light-emitting device 2 is located in the second quadrant. The corresponding position is reversed along the X-axis and Y-axis from the center of the origin, so that the clearance groove d of the lamp holder 21 is precisely matched with the second locking protrusion 53, thereby ensuring that the lamp holder 21 can be smoothly installed and rotated to the required angle.

[0037] With this mirrored design, the vehicle reading light 100 does not require two different lamp holders 21 or housings 1 for left and right installation. The same housing 1 can be installed on the left or right side of the vehicle's ceiling. The lamp holder 21 can be directly installed depending on the mounting side of the base, or rotated 180° and installed on the left or right housing 1. After the lamp holder 21 is installed, the user can still adjust its angle relative to the vehicle exterior by rotating the lamp holder 21. This simplifies mold development and reduces production costs.

[0038] Alternatively, please refer to Figure 4 In this embodiment, the housing 1 includes a front shell 11 and a rear cover 12. The front shell 11 has a first mounting opening b at its front end and a second mounting opening (not shown in the figure) at its rear end. A plurality of latches e are provided around the second mounting opening. The rear cover 12 has a plurality of latches 121 around its periphery that engage with the latches e, so that the rear cover 12 is secured to the rear end of the front shell 11. This facilitates the assembly of the housing 1 and the installation of internal components.

[0039] Alternatively, please refer to Figure 4 In this embodiment, the side of the housing 1 is provided with a socket f for electrical connection to the vehicle's power supply. This facilitates the connection of the vehicle reading light 100 to power.

[0040] Optionally, in this embodiment, the light emitted by the LED light source assembly 22 has a wavelength of 560nm to 590nm. This spectrum range can visually interfere with mosquitoes, thereby achieving a mosquito-repelling effect. In addition, this spectrum range does not contain blue light or ultraviolet light, so it is highly safe for human eyes and skin, meeting the basic needs of in-vehicle reading or lighting, thus enabling the vehicle reading light 100 to have both lighting and mosquito-repelling functions.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the substance of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A vehicle-mounted reading light, characterized in that, include: The housing has an assembly cavity inside and a first mounting port communicating with the assembly cavity; The light-emitting device includes an adjustable lamp holder mounted within the housing and an LED light source assembly fixed within the lamp holder. The lamp holder can be switched and positioned between a first angle and a second angle, and its front end is provided with a light-transmitting part corresponding to the first mounting port. A control circuit board is disposed in the assembly cavity and electrically connected to the LED light source assembly, and is used to control the power output of the LED light source assembly according to the switching of the lamp holder angle.

2. The vehicle-mounted reading light as described in claim 1, characterized in that, The lamp holder achieves adjustable angle installation and positioning through a rotating structure and a locking structure located between the housing and the lamp holder.

3. The vehicle-mounted reading light as described in claim 2, characterized in that, The rotating structure includes: Two rotating shafts are respectively disposed inside the housing and arranged opposite to each other; Two shaft holes are respectively provided on the two sides of the lamp holder and are rotatably engaged with the rotating shaft; The locking structure includes: A first locking protrusion is disposed inside the housing; The first locking track is provided on the side of the lamp holder corresponding to the shaft hole and extends along an arc with the shaft hole as the center. The first locking track has a first locking position and a second locking position corresponding to the first angle and the second angle, respectively, for the first locking protrusion to hold and position.

4. The vehicle-mounted reading light as described in claim 3, characterized in that, The first locking track includes an arc-shaped groove segment and a locking protrusion located in the arc-shaped groove segment. The locking protrusion and the arc-shaped grooves on both sides respectively form the first locking position and the second locking position.

5. The vehicle-mounted reading light as described in claim 4, characterized in that, The lamp holder is provided with a shaft hole mounting section and a locking protrusion mounting section on its side; The shaft hole mounting section is provided along the extending direction of the lamp holder and communicates with the shaft hole for the rotating shaft to slide into and be installed. The locking protrusion mounting section is arranged along the extension direction of the lamp holder and communicates with the first locking track for the first locking protrusion to slide into and be installed.

6. The vehicle-mounted reading light as described in claim 3, characterized in that, The first locking position and the second locking position of the first locking track are respectively provided with a first tactile switch and a second tactile switch electrically connected to the control circuit board. The control circuit board identifies the angle position of the lamp holder according to the on / off state of the first tactile switch and the second tactile switch, and controls the power output of the LED light source assembly through PWM.

7. The vehicle-mounted reading light as described in claim 3, characterized in that, The housing is provided with a second locking protrusion at a position mirrored with respect to the center of the light-emitting device relative to the first locking protrusion; the lamp holder is provided with a clearance groove matching the second locking protrusion at a position mirrored with respect to the center of the light-emitting device relative to the first locking track.

8. The vehicle-mounted reading light as described in claim 1, characterized in that, The housing includes a front shell and a rear cover; The front end of the front shell is provided with the first mounting port, and the rear end is provided with the second mounting port. Several slots are provided around the second mounting port. The rear cover is provided with several latches on its periphery that engage with the latches, so that the rear cover is snapped onto the rear end of the front shell.

9. The vehicle-mounted reading light as described in claim 1, characterized in that, The light-transmitting part is a lens.

10. The vehicle-mounted reading light according to any one of claims 1-9, characterized in that, The light emitted by the LED light source assembly has a wavelength of 560nm to 590nm.

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