Automobile color temperature adjustable reading light mixed light lens device
By using an optical lens composed of the first light guide and the second light guide in the automobile reading lamp, uniform mixing of cold and warm light is achieved, solving the problems of uneven light color and low light efficiency in the prior art, and improving the optical efficiency of the automobile reading lamp.
Patent Information
- Application Number
- CN202421624768.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-07-10
AI Technical Summary
The existing reading lights with adjustable color temperatures cannot evenly mix the cooling and warm light in the optical device, resulting in uneven color cooling and warm light at the mask and low light efficiency utilization.
An optical lens composed of a first light guide and a second light guide is used, and is installed together by heat rivets or snaps. The PCBA is installed on the back of the first light guide. Two white LEDs are respectively arranged on the back of the first light guide. The reflective surface and light transmission surface are arranged on each light guide to achieve uniform mixing of cold and warm light.
The LED light of the cold and warm color temperature is achieved evenly mixing, making the light color of the mask uniformly cool and warm, improving the efficiency of the optical device, and solving the problems of uneven light mixing and low light efficiency utilization.
Smart Images
Figure CN222718062U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of automobile interior reading lamps, in particular to the field of automobile reading lamps with adjustable color temperature, and specifically refers to a mixed light lens device for automobile reading lamps with adjustable color temperature. Background Art
[0002] The current implementation scheme of car color temperature adjustable reading lights on the market generally adopts:
[0003] Solution 1: A single dual-chip LED plus an optical lens. The dual-chip LED contains cold light and warm light. The cold / warm light passes through the optical lens and irradiates the mask and the target surface. By controlling the ratio of cold and warm light, different color temperatures can be obtained.
[0004] Solution 2: Multiple LEDs with different color temperatures plus a reflective bowl. The LED includes multiple cold / warm light LEDs arranged in an array in an alternating manner. The cold / warm light is irradiated to the mask and the target surface through an optical lens. Different color temperatures are obtained by controlling the ratio of cold and warm light.
[0005] Solution 3: Two LEDs with different color temperatures plus a mixing lens. The two cold / warm color temperature LEDs pass through the inner and outer reflective surfaces and then emit through the same light-emitting surface. Different color temperatures can be obtained by controlling the ratio of cold and warm light.
[0006] In the above schemes 1 and 2, the light of the LEDs with cold and warm color temperatures cannot be evenly mixed in the optical device, resulting in uneven cold and warm color of the light at the mask (light emitting surface).
[0007] In the above solution 3, the light emitted by each LED can only be emitted through 50% of the area of the reflection stripes, and the remaining 50% of the light will be lost, resulting in low efficiency of the optical device. Utility Model Content
[0008] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a mixed light lens device for an automobile color temperature adjustable reading lamp which has a simple structure, high light efficiency and a wide range of applications.
[0009] In order to achieve the above-mentioned purpose, the mixed light lens device of the automobile color temperature adjustable reading light of the utility model is as follows:
[0010] The main features of the automobile color temperature adjustable reading light mixed light lens device are that the device comprises a mask, a shell, a PCBA, an optical lens and a back cover, the optical lens comprises a first light guide and a second light guide, the mask is mounted on the bottom of the shell, the optical lens is mounted in the shell, the back cover is mounted on the top of the shell, the first light guide and the second light guide are mounted together by hot riveting or snapping, and the PCBA is mounted on the back of the first light guide.
[0011] Preferably, the first light guide includes a reflective surface and a light-transmitting surface, the reflective surface includes an upper reflective surface and a lower reflective surface, the light-transmitting surface includes an upper light-transmitting surface and a lower light-transmitting surface, the upper reflective surface and the lower reflective surface are both inclined surfaces, the upper light-transmitting surface and the lower light-transmitting surface are both planes, the lower reflective surface and the lower light-transmitting surface are alternately arranged, the upper reflective surface and the upper light-transmitting surface are alternately arranged, and the upper reflective surface is located above the lower light-transmitting surface.
[0012] Preferably, the top of the second light guide is a reflective surface in the form of an inclined surface, the second light guide comprises a plurality of optical teeth alternately spaced apart, the bottom of the optical teeth is a reflective surface in the form of an inclined surface, and the side surfaces of the optical teeth are planes.
[0013] Preferably, the first light guide further comprises a first LED and a second LED, and the first LED and the second LED are both arranged on the back side of the first light guide.
[0014] Preferably, two white light LEDs are arranged on the PCBA, and the two white light LEDs have different color temperatures, one of which is a high color temperature white light LED, and the other is a low color temperature white light LED.
[0015] Preferably, the mask and the optical lens are both mounted on the housing by snap fastening or hot riveting.
[0016] Preferably, the mask is a transparent mask or a milky white diffuse mask, or a mask with other transmittance.
[0017] Preferably, the shell is made of opaque material.
[0018] The utility model adopts the automobile color temperature adjustable reading light mixing lens device, which can evenly mix the light of the cold and warm color temperature LEDs in the optical device, so that the light color at the mask is evenly cold and warm. The optical device has high efficiency and can effectively solve the problems of uneven light mixing and low light efficiency utilization rate of the adjustable color temperature reading light. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 The utility model is an exploded view of the mixed light lens device of the automobile color temperature adjustable reading light.
[0020] Figure 2 The utility model is an overall schematic diagram of the first light guide of the mixed light lens device of the automobile color temperature adjustable reading light.
[0021] Figure 3 The utility model is a schematic diagram of the optical path of the mixed light lens device of the automobile color temperature adjustable reading light.
[0022] Figure 4The utility model is an overall schematic diagram of the second light guide of the mixed light lens device of the automobile color temperature adjustable reading light.
[0023] Reference numerals:
[0024] 1 Mask
[0025] 2 Housing
[0026] 3 PCBA
[0027] 4 First Light Guide
[0028] 5 Second light guide
[0029] 6 Back cover
[0030] 7. First LED
[0031] 8 Second LED
[0032] 9 Interval reflective surfaces
[0033] 10 Reflection surface of the second light guide
[0034] 11 Plane of the second light guide DETAILED DESCRIPTION
[0035] In order to more clearly describe the technical content of the present invention, further description is given below in conjunction with specific embodiments.
[0036] The utility model discloses a mixed light lens device for an automobile color temperature adjustable reading light, which comprises a mask 1, a shell 2, a PCBA 3, an optical lens and a back cover 6, wherein the optical lens comprises a first light guide 4 and a second light guide 5, the mask 1 is mounted on the bottom of the shell 2, the optical lens is mounted in the shell 2, the back cover 6 is mounted on the top of the shell 2, the first light guide 4 and the second light guide 5 are mounted together by hot riveting or snap fastening, and the PCBA 3 is mounted on the back of the first light guide 4.
[0037] As a preferred embodiment of the present utility model, the first light guide includes a reflective surface and a light-transmitting surface, the reflective surface includes an upper reflective surface and a lower reflective surface, the light-transmitting surface includes an upper light-transmitting surface and a lower light-transmitting surface, the upper reflective surface and the lower reflective surface are both inclined surfaces, the upper light-transmitting surface and the lower light-transmitting surface are both planes, the lower reflective surface and the lower light-transmitting surface are alternately arranged, the upper reflective surface and the upper light-transmitting surface are alternately arranged, and the upper reflective surface is located above the lower light-transmitting surface.
[0038] As a preferred embodiment of the utility model, the top of the second light guide is a beveled reflective surface, the second light guide includes a plurality of alternately spaced optical teeth, the bottom of the optical teeth is a beveled reflective surface, and the side surfaces of the optical teeth are planes.
[0039] As a preferred embodiment of the present utility model, the first light guide 4 further includes a first LED and a second LED, and the first LED and the second LED are both arranged on the back side of the first light guide 4 .
[0040] As a preferred embodiment of the present invention, two white light LEDs are arranged on the PCBA3, and the two white light LEDs have different color temperatures, one of which is a high color temperature white light LED, and the other is a low color temperature white light LED.
[0041] As a preferred embodiment of the present utility model, the mask 1 and the optical lens are both mounted on the housing 2 by snap fastening or hot riveting.
[0042] As a preferred embodiment of the present invention, the mask 1 is a transparent mask or a milky white divergent mask, or a mask with other transmittance.
[0043] As a preferred embodiment of the present invention, the housing 2 is made of an opaque material.
[0044] In a specific implementation manner of the utility model, two light guides are used to form a mask 1, a shell 2, a PCBA 3, a first light guide 4, a second light guide 5, and a back cover 6.
[0045] The mask 1 can be a transparent mask 1 or a milky white diffuse mask 1, or can be defined as a mask 1 with different transmittances.
[0046] The shell 2 is made of opaque material, and the remaining parts are mounted on the shell 2 by snap fastening or hot riveting.
[0047] The optical lens is composed of two light guides, a first light guide 4 and a second light guide 5, which are mounted together by heat riveting or snap-fitting.
[0048] Each light guide is arranged with double-layer spaced optical teeth. The light emitted by LEDs with different color temperatures enters the optical lens through the bottom of the optical lens, and is then reflected to the main light path through the spaced optical teeth. The light of different color temperatures converges into one beam in the main light path. By changing the luminous flux of LEDs with different color temperatures through software, light spots of different color temperatures can be obtained in the target area of the reading light.
[0049] The optical teeth and reflective surfaces are Figure 2 The yellow and green slopes in Figure 2 The pink and blue planes in the front are translucent planes. 50% of the light coming out of the LED will be reflected by the yellow and green inclined planes and then go down and finally emit out.
[0050] The other 50% of the light will directly pass through the planar light-transmitting surfaces of the pink and blue surfaces to reach the second light guide. Figure 3As shown, its form is similar to the first light guide but not exactly the same.
[0051] The upper structure of the second light guide is composed of spaced pink reflective surfaces and interlaced planes; the lower structure is composed of planes and interlaced blue reflective surfaces. The light emitted directly from the pink and blue surfaces of the first light guide will enter the pink and blue reflective surfaces of the second light guide, and after reflection, go down and finally emit. In this way, 100% of the light from the first LED and the second LED is utilized and mixed. 50% is directly reflected by the first light guide, and the other 50% penetrates the first light guide and reaches the reflective surface of the second light guide and is reflected.
[0052] By arranging two reflective surfaces spaced apart from each other on each light guide, the upper reflective surface collects light from one LED, and the lower reflective surface collects light from another LED, so the optical utilization rate is theoretically 100%, thereby reducing light loss.
[0053] Two white LEDs with different color temperatures are arranged on PCBA3, one is a high color temperature white LED and the other is a low color temperature white LED. The rest of the electronic components and control chips are all on this PCBA3.
[0054] The back cover 6 is made of opaque plastic and is mounted on the housing 2 by snaps or screws.
[0055] After the two LEDs with different color temperatures on PCBA3 are turned on and emit light, the light is emitted and mixed through the first light guide 4 and the second light guide 5, and then irradiated onto the target surface through the mask 1. The first light guide 4, the second light guide 5, PCBA3, and the mask 1 are all installed on the housing 2, and the back cover 6 is finally installed in the housing 2 to form a complete product.
[0056] The light of the first LED will first pass through the first light guide 4, of which 50% of the light will directly hit the reflective surface at the upper end of the first light guide 4 and be emitted to the mask 1, and the other 50% of the light will pass through the reflective surfaces arranged at intervals on the first light guide 4 (the pink dotted lines in the above figure are schematic diagrams of the reflective surfaces arranged at intervals) and enter the second light guide 5, and pass through the reflective surface at the upper end of the second light guide 5 to be emitted to the mask 1. Therefore, all the light of the LED is not wasted, and is emitted into the mask 1, and then emitted to the target surface through the mask 1.
[0057] Similarly, the light from the second LED will first pass through the first light guide 4, 50% of which will directly hit the reflective surface at the lower end of the first light guide 4 and be emitted toward the mask 1, and the other 50% of the light will pass through the alternate reflective surfaces on the first light guide 4 and enter the second light guide 5, and then pass through the reflective surface at the lower end of the second light guide 5 and be emitted into the mask 1.
[0058] Therefore, the light obtained on the mask 1 is a uniform mixture of cold and warm light. By changing the luminous flux ratio of the first LED and the second LED by software, different color temperatures can be obtained, thereby achieving adjustable color temperature.
[0059] In order to avoid uneven mixing of cold light and warm light on the mask 1, the reflective surface of each light guide needs to be arranged in stripes at intervals. The more stripes there are, the more evenly the cold light and warm light on the mask 1 are mixed.
[0060] The specific implementation scheme of this embodiment can refer to the relevant description in the above embodiment, which will not be repeated here.
[0061] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.
[0062] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" refers to at least two.
[0063] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0064] The utility model adopts the automobile color temperature adjustable reading light mixing lens device, which can evenly mix the light of the cold and warm color temperature LEDs in the optical device, so that the light color at the mask is evenly cold and warm. The optical device has high efficiency and can effectively solve the problems of uneven light mixing and low light efficiency utilization rate of the adjustable color temperature reading light.
[0065] In this specification, the utility model has been described with reference to its specific embodiments. However, it is obvious that various modifications and changes can be made without departing from the spirit and scope of the utility model. Therefore, the description and drawings should be regarded as illustrative rather than restrictive.
Claims
1. A mixed light lens device for an automobile reading light with adjustable color temperature, characterized in that: The device includes a mask, a shell, a PCBA, an optical lens and a back cover, the optical lens includes a first light guide and a second light guide, the mask is installed at the bottom of the shell, the optical lens is installed in the shell, the back cover is installed on the top of the shell, the first light guide and the second light guide are installed together by hot riveting or snapping, and the PCBA is installed on the back of the first light guide.
2. The mixed light lens device for an automobile color temperature adjustable reading light according to claim 1, characterized in that: The first light guide includes a reflective surface and a light-transmitting surface, the reflective surface includes an upper reflective surface and a lower reflective surface, the light-transmitting surface includes an upper light-transmitting surface and a lower light-transmitting surface, the upper reflective surface and the lower reflective surface are both inclined surfaces, the upper light-transmitting surface and the lower light-transmitting surface are both planes, the lower reflective surface and the lower light-transmitting surface are alternately arranged, the upper reflective surface and the upper light-transmitting surface are alternately arranged, and the upper reflective surface is located above the lower light-transmitting surface.
3. The mixed light lens device for an automobile color temperature adjustable reading light according to claim 1, characterized in that: The top of the second light guide is a reflective surface in the form of an inclined surface. The second light guide comprises a plurality of optical teeth that are alternately spaced. The bottom of the optical teeth is a reflective surface in the form of an inclined surface. The side surfaces of the optical teeth are planes.
4. The mixed light lens device for an automobile color temperature adjustable reading light according to claim 1, characterized in that: The first light guide further includes a first LED and a second LED, and the first LED and the second LED are both arranged on the back side of the first light guide.
5. The mixed light lens device for an automobile color temperature adjustable reading light according to claim 1, characterized in that: The PCBA is provided with two white light LEDs, and the two white light LEDs have different color temperatures, one of which is a high color temperature white light LED, and the other is a low color temperature white light LED.
6. The mixed light lens device for an automobile color temperature adjustable reading light according to claim 1, characterized in that: The mask and the optical lens are both mounted on the shell by snapping or hot riveting.
7. The mixed light lens device for an automobile color temperature adjustable reading light according to claim 1, characterized in that: The mask is a transparent mask or a milky white divergent mask, or a mask with other transmittances.
8. The mixed light lens device for an automobile color temperature adjustable reading light according to claim 1, characterized in that: The shell is made of opaque material.