Signal lamp and light control system

Abstract

The embodiment of the invention discloses a signal lamp and a light control system. The signal lamp comprises a bowl-shaped reflecting cover, the bowl-shaped reflecting cover comprises n reflecting areas, and the focal positions of the reflecting areas are not overlapped; the n light sources are arranged at the focal positions of the light reflecting areas in a one-to-one correspondence manner; wherein n is an integer greater than or equal to 2. According to the embodiment of the invention, the bowl-shaped reflecting cover is divided into a plurality of reflecting areas with non-overlapped focuses, and the corresponding light sources are arranged at the focus positions of the reflecting areas in a matched manner, so that the problems of low optical efficiency and poor lighting uniformity caused by out-of-focus arrangement of the light sources of the existing multifunctional signal lamp are solved.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of light control, in particular to a signal lamp and a light control system. BACKGROUND

[0002] In the technical field of signal lamps, in order to realize the integration and multiplexing of multifunctional signal lamps, the prior art usually adopts a design scheme of arranging multiple groups of LEDs side by side and sharing one reflector bowl.

[0003] The specific arrangement mode is that one group of functional LEDs is arranged at the focal point position of the reflector bowl, another group of functional LEDs is arranged off focus, or both groups of LEDs are directly arranged off focus, so as to distinguish different functions of the signal lamp.

[0004] However, the above prior art scheme has obvious defects. First, the off-focus arranged LEDs cannot fully utilize the condensing effect of the reflector bowl, and the light is easy to produce scattering loss after reflection, resulting in the decrease of the effective light emitting efficiency of the signal lamp. In addition, the lightening uniformity is poor, and there is a difference between the light reflection paths of the focal point LEDs and the off-focus LEDs, resulting in uneven brightness distribution on the light emitting surface of the signal lamp, and local over-brightness or over-darkness is easy to occur. In view of the above problems, the prior art processing mode is passive, that is, by increasing the LED power compensation and increasing the driving power of the off-focus LEDs to compensate for the loss of optical efficiency, but this mode not only increases the equipment energy consumption and heat dissipation pressure, but also is difficult to fundamentally solve the problem of brightness uniformity. Or, independent reflector bowls are configured for different functional signal lamps, which increases the volume of the lamp and the production cost, and cannot meet the application requirements of miniaturization and integration. SUMMARY

[0005] The present application provides a signal lamp and a light control system, which divides the bowl-shaped reflector cover into multiple focal point non-overlapping light reflection areas, and sets corresponding light sources at the focal point positions of the light reflection areas, thereby solving the problems of low optical efficiency and poor lightening uniformity caused by off-focus arrangement of light sources in the prior art multifunctional signal lamp.

[0006] In a first aspect, the embodiment of the present application provides a signal lamp, comprising:

[0007] a bowl-shaped reflector cover, the bowl-shaped reflector cover comprising n light reflection areas, the focal point positions of each light reflection area being non-overlapping;

[0008] n light sources, the light sources being arranged one by one at the focal point positions of the light reflection areas; wherein n is an integer greater than or equal to 2.

[0009] Optionally, each light reflection area is arranged on a different optical curved surface; wherein the optical curved surface comprises a rotating parabolic surface, a parabolic cylindrical surface and a free curved surface.

[0010] Optionally, the bowl-shaped reflector comprises a central reference axis; a plane passing through the central reference axis forms a central reference axial plane, and a continuous reflection curved surface is arranged on one side of the central reference axial plane.

[0011] The continuous reflection curved surface comprises n reflection regions, each reflection region comprises a plurality of reflection plates, and each reflection plate is arranged along a first circumferential direction of the semi-elliptical reflector in sequence.

[0012] Optionally, each reflection plate comprises a plurality of reflection plate columns, and each reflection plate is arranged along a second circumferential direction of the bowl-shaped reflector in sequence.

[0013] Optionally, the bowl-shaped reflector comprises a central reference axis; a plane passing through the central reference axis forms a central reference axial plane, and a continuous reflection curved surface is arranged on one side of the central reference axial plane.

[0014] The continuous reflection curved surface comprises n reflection regions, each reflection region comprises a plurality of reflection plates, and each reflection plate is arranged along a second circumferential direction of the semi-elliptical reflector in sequence; wherein the intersection line of the central reference axial plane and the inner surface of the semi-elliptical reflector is the first circumferential direction of the semi-elliptical reflector, and the first circumferential direction and the second circumferential direction are two circumferential directions perpendicular to each other of the bowl-shaped reflector.

[0015] Optionally, each reflection plate comprises a plurality of reflection plate columns, and each reflection plate is arranged along a first circumferential direction of the bowl-shaped reflector in sequence.

[0016] Optionally, the area ratios of the reflection regions on the bowl-shaped reflector are different from each other.

[0017] In a second aspect, the embodiments of the present application also provide a light control system, comprising the signal lamp of any one of the first aspect and a light control unit.

[0018] The light control unit is electrically connected with the light sources.

[0019] Optionally, the light control unit comprises a first mode control subunit.

[0020] The first mode control subunit is electrically connected with all the light sources and is used for activating the light sources individually; wherein the light sources form a preset single light function after being reflected by the corresponding reflection regions.

[0021] Optionally, the control unit comprises a second mode control subunit, the second mode control subunit is electrically connected with all the light sources and is used for activating at least two light sources in combination, and the light rays of the light sources are superimposed after being reflected by the corresponding reflection regions, thereby forming a preset composite light function.

[0022] The embodiment of the present application provides a signal lamp and a light control system. The signal lamp comprises: a bowl-shaped reflector, the bowl-shaped reflector comprises n reflecting areas, and the focal point positions of each reflecting area do not coincide with each other; and n light sources, the light sources are arranged at the focal point positions of the reflecting areas one by one. Wherein, n is an integer greater than or equal to 2. The embodiment of the present application divides the bowl-shaped reflector into a plurality of reflecting areas with non-coincident focal points, and the corresponding light sources are arranged at the focal point positions of the reflecting areas, so that the problems of low optical efficiency and poor lighting uniformity caused by off-focus arrangement of the light sources of the existing multifunctional signal lamp are solved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 、 Figure 2 and Figure 3 are a front view, a side view and a top view of a signal lamp provided by the embodiment of the present application;

[0024] Figure 4 is a light path schematic diagram of a signal lamp provided by the embodiment of the present application;

[0025] Figure 5 is a structure schematic diagram of a light control system provided by the embodiment of the present application. DETAILED DESCRIPTION

[0026] The present application will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the convenience of description, only the parts related to the present application are shown in the drawings, but not all the structures.

[0027] It should be noted that the terms "first", "second", and the like in the description, claims, and drawings of the present application are used to distinguish like objects, and do not necessarily indicate a particular order or sequence. It should be understood that the data thus used can be interchanged, where appropriate, so that the embodiments of the present application described herein can be implemented in other than the order illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0028] Figure 1 、 Figure 2 and Figure 3 are a front view, a side view and a top view of a signal lamp provided by the embodiment of the present application, Figure 4 is a light path schematic diagram of a signal lamp provided by the embodiment of the present application.

[0029] As shown in Figures 1-3 A signal lamp, comprising: a bowl-shaped reflector 10, the bowl-shaped reflector 10 comprising n light-reflecting areas 11, the focal point positions of each of the light-reflecting areas 11 being mutually non-coincident. n light sources 20, the light sources 20 being arranged one-to-one at the focal point positions of the light-reflecting areas 11. Wherein, n is an integer greater than or equal to 2.

[0030] Specifically, referring to Figures 1-4 , the embodiment of the present application provides a specific example comprising two light sources 20 and two light-reflecting areas 11. It should be understood that the technical solution based on the embodiment of the present application can be extended to a solution comprising more light sources 20. Based on the light-emitting direction of the signal lamp, in combination with Figures 1-3 It can be known that the two light-reflecting areas 11 of the bowl-shaped reflector 10 are arranged along the partition of the reflector body curved surface, the two light sources 20 are one-to-one corresponding to the two light-reflecting areas 11, and each light source 20 is fixedly arranged at the focal point position of the corresponding light-reflecting area 11. The focal point positions of the two light-reflecting areas 11 are mutually non-coincident. When any signal lamp works, the activated light source 20 emits light and transmits to the corresponding light-reflecting area 11. Because the light source is at the focal point position of the light-reflecting area, the light reflected by the light-reflecting area forms parallel light which is emitted along the preset light-emitting direction, realizing a kind of light function. At the same time, according to the requirements of two kinds of light functions, the area ratio of the two light-reflecting areas on the bowl-shaped reflector can be adjusted, so that the light-emitting intensity and the light spot range of the corresponding function meet the use standard, thereby realizing the multi-functional integration of the signal lamp, improving the optical efficiency and lighting uniformity, and solving the problems of low light efficiency and uneven brightness caused by the off-focus arrangement of the prior art.

[0031] The embodiment of the present application provides a signal lamp, comprising: a bowl-shaped reflector, the bowl-shaped reflector comprising n light-reflecting areas, the focal point positions of each of the light-reflecting areas being mutually non-coincident. n light sources, the light sources being arranged one-to-one at the focal point positions of the light-reflecting areas. Wherein, n is an integer greater than or equal to 2. The embodiment of the present application solves the problems of low optical efficiency and poor lighting uniformity caused by the off-focus arrangement of the light source of the existing multi-functional signal lamp by dividing the bowl-shaped reflector into multiple light-reflecting areas with mutually non-coincident focal points and arranging corresponding light sources at the focal point positions of the light-reflecting areas.

[0032] The signal lamp and the light control system provided by the embodiment of the present application realize the consideration of multi-functional integration and optical performance through the optimization design of the optical structure, have the advantages of miniaturization and low energy consumption, and are suitable for the needs of various signal lamp application scenarios.

[0033] In an optional embodiment, each of the light-reflecting areas 11 is arranged on a different optical curved surface. Wherein, the optical curved surface comprises a rotating parabolic surface, a parabolic cylindrical surface and a free curved surface.

[0034] Specifically, each of the reflective areas 11 of the bowl-shaped reflector 10 is arranged on a different optical curved surface, which can be selected from a rotating parabolic surface, a parabolic cylindrical surface, and a free curved surface as needed. The light emitted by the light source is reflected by the rotating parabolic surface to form light rays parallel to the symmetry axis, which can realize the functions of a high beam, a signal lamp, etc. The light emitted by the light source is reflected by the parabolic cylindrical surface or the free curved surface to form light rays in a non-parallel state, which can realize the function of a low beam. By matching different optical curved surfaces to different reflective areas, the signal lamp can meet the light emission requirements of different functions.

[0035] In an optional embodiment, the bowl-shaped reflector 10 includes a central reference axis L. A plane passing through the central reference axis L constitutes a central reference axial plane, and one side of the central reference axial plane is provided with a continuous reflective curved surface. The continuous reflective curved surface includes n reflective areas 11, and each reflective area 11 includes a plurality of reflective plate columns 111, and each reflective plate column 111 is arranged along a first circumferential direction x of the semi-reflective parabolic bowl.

[0036] The intersection between the central reference axial plane and the inner surface of the semi-reflective parabolic bowl is the first circumferential direction x of the semi-reflective parabolic bowl.

[0037] Specifically, the bowl-shaped reflector 10 is provided with a central reference axis L, a plane passing through the central reference axis L constitutes a central reference axial plane, and one side of the central reference axial plane is provided with a continuous reflective curved surface. The continuous reflective curved surface is divided into n reflective areas 11, and the optical curved surface of each functional reflective area 11 is not a smooth whole, but is composed of a plurality of strip-shaped reflective plate columns 111. Each reflective plate column 111 is arranged along the first circumferential direction x of the semi-reflective parabolic bowl to ensure the uniformity of light reflection, avoid local brightness deviation, and further improve the light emission stability and optical efficiency.

[0038] For example, when there are only two reflective areas A and B, A, B, A, and B are arranged alternately along the first circumferential direction x. Similarly, when there are more than three reflective areas, such as A, B, and C, A, B, C, A, B, and C are arranged periodically along the first circumferential direction x.

[0039] In an optional embodiment, each reflective plate column 111 includes a plurality of reflective plates 1111, and each reflective plate 1111 is arranged along a second circumferential direction y of the bowl-shaped reflector 10.

[0040] The first circumferential direction x and the second circumferential direction y are two circumferential directions of the bowl-shaped reflector 10 perpendicular to each other.

[0041] Specifically, the optical curve surface of each functional light reflection area 11 is not a smooth whole, but is composed of a plurality of strip-shaped light reflection plate columns 111 arranged along the first circumferential direction x. In the second circumferential direction y, the strip-shaped light reflection plate columns 111 further include a plurality of rectangular light reflection plates 1111. By respectively controlling the inclination angle and curvature of each light reflection plate 1111, the direction and distribution of reflected light can be accurately controlled.

[0042] In an optional embodiment, the bowl-shaped light reflection cover 10 includes a central reference axis L. A plane passing through the central reference axis L constitutes a central reference axial plane, and a continuous reflection curve surface is arranged on one side of the central reference axial plane. The continuous reflection curve surface includes n light reflection areas 11, and each light reflection area 11 includes a plurality of light reflection plate columns 111 arranged along the second circumferential direction y of the semi-elliptical parabolic light reflection bowl. The intersection line between the central reference axial plane and the inner surface of the semi-elliptical parabolic light reflection bowl is the first circumferential direction x of the semi-elliptical parabolic light reflection bowl, and the first circumferential direction x and the second circumferential direction y are two circumferential directions of the bowl-shaped light reflection cover 10 perpendicular to each other.

[0043] Specifically, the bowl-shaped light reflection cover 10 is provided with a central reference axis L, a plane passing through the central reference axis L constitutes a central reference axial plane, and a continuous reflection curve surface is arranged on one side of the central reference axial plane. The continuous reflection curve surface is divided into n light reflection areas 11, and the optical curve surface of each functional light reflection area 11 is not a smooth whole, but is composed of a plurality of strip-shaped light reflection plate columns 111. Each light reflection plate column 111 is arranged along the second circumferential direction y of the semi-elliptical parabolic light reflection bowl, so as to ensure the uniformity of light reflection, avoid local brightness deviation, and further improve the light stability and optical efficiency.

[0044] In an optional embodiment, each light reflection plate column 111 includes a plurality of light reflection plates 1111, and each light reflection plate 1111 is arranged along the first circumferential direction x of the bowl-shaped light reflection cover 10.

[0045] Specifically, the optical curve surface of each functional light reflection area 11 is not a smooth whole, but is composed of a plurality of strip-shaped light reflection plate columns 111 arranged along the second circumferential direction y. In the first circumferential direction x, the strip-shaped light reflection plate columns 111 further include a plurality of rectangular light reflection plates 1111. By respectively controlling the inclination angle and curvature of each light reflection plate 1111, the direction and distribution of reflected light can be accurately controlled.

[0046] It should be noted that the arrangement schemes of the two kinds of reflector plates 111 and reflector plate rows 1111 are only exemplary descriptions of embodiments of the present application, and it should be understood that regardless of the arrangement mode, the core is the orderly combination of the reflector plates 111 and the reflector plate rows 1111 in two perpendicular circumferential directions, which refines the optical reflection units of the light reflection area, and ensures that the light emitted by the light source is not affected in uniformity and stability after the cooperation of the multi-level reflection units.

[0047] In an optional embodiment, the area ratios of the light reflection areas 11 on the bowl-shaped reflector 10 are different from each other.

[0048] Specifically, the area ratios of the n light reflection areas 11 of the bowl-shaped reflector 10 on the continuous reflection surface are different from each other, each light reflection area 11 corresponds to a function of the signal lamp, and the area ratio is determined according to the light emission requirement of the corresponding function. For example, for the main function signal lamp which needs a large spot and high brightness, the corresponding light reflection area 11 is configured with a larger area ratio, and for the auxiliary function signal lamp, the corresponding light reflection area 11 is configured with a smaller area ratio. Through the differential area ratio design, the signal lamp can match the optical indicators of different functions.

[0049] Figure 5 is a structural schematic diagram of a light control system provided by an embodiment of the present application, referring to Figure 5 The embodiment of the present application further provides a light control system, which comprises the signal lamp and the light control unit 30 in the above-mentioned embodiments. The light control unit 30 is electrically connected with each light source 20.

[0050] Specifically, the light control unit 30 is electrically connected with each light source 20 of the signal lamp. The light control unit 30 is used for controlling the corresponding light source 20 to emit light when receiving an external light function instruction.

[0051] In an optional embodiment, the light control unit 30 comprises a first mode control subunit 31. The first mode control subunit 31 is electrically connected with all the light sources 20, and is used for activating each light source 20. The light source 20 forms a preset single light function after being reflected by the corresponding light reflection area 11.

[0052] Specifically, the light control unit 30 comprises a first mode control subunit 31, which is electrically connected with all the light sources 20 of the signal lamp. When the system receives a trigger instruction of a single light function, the first mode control subunit 31 outputs a driving signal to the corresponding single light source 20 according to the instruction, and the other light sources 20 remain in a power-off state. The activated light source 20 emits light to realize the preset single light function of the signal lamp, and meet the independent lamp demand in different scenes.

[0053] In an optional embodiment, the light control unit 30 comprises a second mode control subunit 32, which is electrically connected with all the light sources 20, and is configured to activate at least two light sources 20 to superimpose the light reflected by the corresponding light reflection areas 11, so as to form a preset composite light function.

[0054] Specifically, the light control unit 30 comprises a second mode control subunit 32, which is electrically connected with all the light sources 20 of the signal lamp. When the system receives a trigger instruction of the composite light function, the second mode control subunit 32 synchronously outputs a driving signal to at least two target light sources 20 according to the instruction. Each of the activated light sources 20 emits light, and different lights are superimposed on the light emitting surface of the signal lamp to meet the composite light function required by a specific scene.

[0055] It should be noted that the above are only the preferred embodiments of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, re-adjustments, mutual combinations and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A signal light, characterized by The bowl-shaped reflector comprises n reflecting areas, and the focal points of each reflecting area do not coincide with each other. n light sources are arranged one by one at the focal points of the reflecting areas, wherein n is an integer greater than or equal to 2. Each reflecting area is arranged on a different optical curved surface, and the optical curved surface comprises a rotating parabolic surface, a parabolic cylindrical surface, and a free curved surface.

2. The signal light of claim 1, wherein The bowl-shaped reflector comprises a central reference axis, and a plane passing through the central reference axis forms a central reference axial plane, and a continuous reflecting curved surface is arranged on one side of the central reference axial plane.

3. The signal light of claim 1, wherein The continuous reflecting curved surface comprises n reflecting areas, and each reflecting area comprises a plurality of reflecting plates arranged along a first circumferential direction of the semi-reflecting bowl-shaped reflector. Each reflecting plate comprises a plurality of reflecting plate columns arranged along a second circumferential direction of the bowl-shaped reflector, and the first circumferential direction and the second circumferential direction are two circumferential directions perpendicular to each other of the bowl-shaped reflector.

4. The signal light of claim 3, wherein The bowl-shaped reflector comprises a central reference axis, and a plane passing through the central reference axis forms a central reference axial plane, and a continuous reflecting curved surface is arranged on one side of the central reference axial plane.

5. The signal light of claim 1, wherein The continuous reflecting curved surface comprises n reflecting areas, and each reflecting area comprises a plurality of reflecting plates arranged along a second circumferential direction of the semi-reflecting bowl-shaped reflector. Each reflecting plate comprises a plurality of reflecting plate columns arranged along a first circumferential direction of the bowl-shaped reflector.

6. The signal light of claim 5, wherein The area ratios of each reflecting area on the bowl-shaped reflector are different from each other.

7. The signal light of claim 1, wherein The signal lamp and the light control unit are included.

8. A light control system characterized by, The light control unit is electrically connected with each light source. The light control unit comprises a first mode control subunit.

9. The light control system of claim 8, wherein, The first mode control subunit is electrically connected with all light sources and is used for activating each light source individually, and the light source forms a preset single light function after being reflected by the corresponding reflecting area. The control unit comprises a second mode control subunit, and the second mode control subunit is electrically connected with all light sources and is used for activating at least two light sources in combination, and the light rays of each light source after being reflected by the corresponding reflecting area are superimposed to form a preset composite light function.

10. The signal light of claim 8, wherein, ​

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