Indicator lamp assembly for vehicle, control system and vehicle

Abstract

The invention discloses an indicator light assembly for a vehicle, a control system and the vehicle, and relates to the technical field of vehicle parts. The indicating lamp assembly comprises a shell, a light guide plate and a light-emitting module. A containing cavity is formed in the shell. The light guide plate is arranged in the containing cavity and connected to the shell, the light guide plate is provided with a light emitting face right opposite to the light emitting end of the shell, the light guide plate is provided with a light gathering part, and the light gathering part comprises a plurality of light gathering faces with different optical focus positions; the light-emitting module is arranged in the containing cavity and connected to the light guide plate, the light-emitting module comprises a plurality of light sources, the light sources correspond to the light gathering faces in a one-to-one mode, and the light-emitting center of each light source is matched with the optical focus position of the corresponding light gathering face. According to the indicating lamp assembly, the problems of low light condensation efficiency and uneven light emission are effectively solved, the light utilization rate and the light emission uniformity are improved, and the requirement of an automatic driving vehicle for high quality of the indicating lamp is met.

Description

Technical Field

[0001] This invention relates to the field of vehicle component technology, and in particular to an indicator light assembly, control system, and vehicle for use in a vehicle. Background Technology

[0002] With the development of autonomous driving, controlling the illumination of external indicator lights by the vehicle's autonomous driving status can inform pedestrians, drivers of surrounding vehicles, and the driver of the vehicle itself of the driving status, thereby improving driving safety. Furthermore, with technological advancements and market demands, vehicle headlight designs are becoming increasingly diverse, and customers are placing higher demands on the uniformity and quality of the luminous surface.

[0003] Autonomous driving indicator lights are often integrated with turn signals and brake lights. Turn signals use yellow light, brake lights use red light, and autonomous driving indicator lights use blue light. Different colors of light require different light sources. Due to the differences in light emission characteristics and installation positions of different light sources, the light cannot achieve efficient convergence and uniform distribution, which makes it easy for the light-emitting surface of the indicator light to have problems such as uneven brightness and obvious light spots. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of this invention is to provide an indicator light assembly. According to the indicator light assembly of this invention, the problems of low light-gathering efficiency and uneven light output are effectively solved, improving light utilization and light output uniformity, thus meeting the high-quality requirements of autonomous vehicles for indicator lights.

[0005] The present invention also proposes a control system having the above-mentioned indicator light assembly.

[0006] The present invention also proposes a vehicle having the above-described indicator light assembly.

[0007] The indicator light assembly for a vehicle according to the present invention includes: a housing having a receiving cavity formed therein; a light guide plate disposed within the receiving cavity and connected to the housing, the light guide plate having a light-emitting surface facing the light-emitting end of the housing, the light guide plate having a focusing portion including a plurality of focusing surfaces with different optical focal points; and a light-emitting module disposed within the receiving cavity and connected to the light guide plate, the light-emitting module including a plurality of light sources, the plurality of light sources being arranged in a one-to-one correspondence with the plurality of focusing surfaces, the light-emitting center of each light source being adapted to the optical focal point position of one of its corresponding focusing surfaces.

[0008] The indicator light assembly of the present invention, by setting multiple focusing surfaces with different optical focal positions and adapting them one-to-one with multiple light sources, can effectively solve the problems of low focusing efficiency and poor uniformity of light-emitting surfaces in related technologies, thereby improving the utilization rate of light and making the light emitted by the indicator light assembly more uniform and bright, thus improving the visual effect and clarity of information transmission of the indicator light assembly, and better meeting the high-quality requirements of autonomous vehicles for indicator lights.

[0009] According to some embodiments of the present invention, the light-concentrating part includes a plurality of light-concentrating units, each light-concentrating unit including a plurality of light-concentrating surfaces; within the same light-concentrating unit, the plurality of light-concentrating surfaces are spaced apart in the width direction; different light-concentrating units are spaced apart in the length direction.

[0010] According to some embodiments of the present invention, the light-emitting module includes multiple light strings, each light string including multiple light sources arranged at intervals between each other; each light string is correspondingly arranged with a focusing unit, and the light-emitting center of each light source in each light string is adapted to the optical focal position of different focusing surfaces in its corresponding focusing unit.

[0011] According to some embodiments of the present invention, within the same light-concentrating unit, the distance between two adjacent light-concentrating surfaces is a and satisfies: a≤1mm.

[0012] According to some embodiments of the present invention, the light guide plate is formed with a reflective surface, the reflective surface being opposite to the light emitting surface and arranged at an acute angle to the light emitting surface, the reflective surface being used to guide the light rays converged by the light focusing part to the light emitting surface.

[0013] According to some embodiments of the present invention, the angle between the reflecting surface and the light-emitting surface is α and satisfies: α≥45°.

[0014] According to some embodiments of the present invention, the length of the light guide plate along its light propagation direction is d and satisfies: d≥35mm.

[0015] According to some embodiments of the present invention, the housing includes: a rear housing having a light-emitting port; a light-transmitting cover connected to the rear housing and covering the light-emitting port, the light-transmitting cover defining the receiving cavity between the rear housing and the rear housing, the light-transmitting cover being constructed as a transparent element.

[0016] The control system according to the present invention is briefly described below.

[0017] The control system according to the present invention includes: an autonomous driving domain controller, which is used to acquire the vehicle driving status and generate corresponding indication signals; a body domain controller, which is communicatively connected to the autonomous driving domain controller and is used to receive the indication signals; and an indicator light assembly, which is electrically connected to the body domain controller, and the indicator light assembly is constructed as the indicator light assembly described in any of the above embodiments; wherein the body domain controller is configured to independently control the lighting and extinguishing of different light sources in the light-emitting module according to the indication signals.

[0018] Since the control system according to the present invention includes the indicator light assembly described in any of the above embodiments, the control system according to the present invention can accurately and flexibly display the vehicle driving status, thereby improving the reliability and safety of autonomous driving information transmission.

[0019] The vehicle according to the present invention is briefly described below.

[0020] The vehicle according to the present invention includes the indicator light assembly described in any of the above embodiments. Because the vehicle according to the present invention includes the indicator light assembly described in any of the above embodiments, the vehicle according to the present invention can more clearly and accurately convey driving intentions to the outside world, effectively improving road interaction safety and smoothness.

[0021] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a front view of an indicator light assembly according to an embodiment of the present invention; Figure 2 This is an exploded view of an indicator light assembly according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the light guide plate of an indicator light assembly according to an embodiment of the present invention; Figure 4 This is a cross-sectional schematic diagram of the light guide plate of an indicator light assembly according to an embodiment of the present invention; Figure 5 This is a schematic diagram of a control system according to an embodiment of the present invention.

[0023] Figure label: 1. Indicator light assembly; 11. Outer shell; 111. Back shell; 112. Light-transmitting cover; 12. Light guide plate; 121. Concentrating part; 1211. Concentrating surface; 122. Reflecting surface; 123. Light emitting surface; 13. Light-emitting module. Detailed Implementation

[0024] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0025] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] In related technologies, autonomous driving indicator lights are often integrated with turn signals and brake lights. Turn signals use yellow light, brake lights use red light, and autonomous driving indicator lights use blue light. Different colors of light require different light sources. Due to the differences in light emission characteristics and installation positions of different light sources, the light cannot achieve efficient convergence and uniform distribution, which makes it easy for the light-emitting surface of the indicator light to have problems such as uneven brightness and obvious light spots.

[0027] The following is for reference. Figures 1-4 The indicator light assembly 1 according to an embodiment of the present invention is described.

[0028] like Figures 1-4As shown, the indicator light assembly 1 for a vehicle according to the present invention includes a housing 11, a light guide plate 12, and a light-emitting module 13. A receiving cavity is formed within the housing 11. The receiving cavity provides mounting space for the light guide plate 12 and the light-emitting module 13, integrates the light guide plate 12 and the light-emitting module 13 together, and protects the internal components, ensuring that the indicator light assembly 1 can operate stably and reliably.

[0029] The light guide plate 12 is disposed within the receiving cavity and connected to the outer shell 11, thereby fixing the position of the light guide plate 12 within the receiving cavity and enabling it to stably perform its light guiding function. The light guide plate 12 has a light-emitting surface 123 that faces the light-emitting end of the outer shell 11. The light-emitting end of the outer shell 11 is where the light finally exits the indicator light assembly 1 to display information to the outside world. The fact that the light-emitting surface 123 of the light guide plate 12 faces the light-emitting end of the outer shell 11 ensures that the light transmitted from the light guide plate 12 can be emitted through the light-emitting end of the outer shell 11, achieving effective information transmission.

[0030] The light guide plate 12 has a light-concentrating part 121, which includes multiple light-concentrating surfaces 1211 with different optical focal points. It can perform precise light-concentrating operation for light sources with different positions and characteristics, so that the light emitted by each light source can be effectively converged and guided.

[0031] The light-emitting module 13 is disposed in the receiving cavity and connected to the light guide plate 12, ensuring a tight fit between the light-emitting module 13 and the light guide plate 12, so that the light emitted by the light-emitting module 13 can smoothly enter the light guide plate 12 for conduction and further processing.

[0032] The light-emitting module 13 includes multiple light sources, each corresponding to a specific focusing surface 1211. The light-emitting center of each light source is matched with the optical focal point of its corresponding focusing surface 1211. Therefore, the light emitted by each light source can be converged by its corresponding focusing surface 1211 at the most ideal angle and in the most ideal manner. When the light source emits light, the light can be accurately focused near the focal point of the focusing surface 1211. After the optical action of the focusing surface 1211, the light can be more concentrated and uniformly transmitted to the light-emitting surface 123 of the light guide plate 12, and finally emitted from the light-emitting end of the housing 11.

[0033] According to the indicator light assembly 1 of the present invention, by setting multiple focusing surfaces 1211 with different optical focal positions and matching them one by one with multiple light sources, the problems of low focusing efficiency and poor uniformity of light-emitting surface 123 in related technologies can be effectively solved. This can improve the utilization rate of light, make the light output of indicator light assembly 1 more uniform and bright, thereby improving the visual effect and clarity of information transmission of indicator light assembly 1, and better meeting the high-quality requirements of autonomous driving vehicles for indicator lights.

[0034] Therefore, the indicator light assembly 1 according to the present invention effectively solves the problems of low light concentration efficiency and uneven light output, improves light utilization and light output uniformity, and meets the high-quality requirements of autonomous vehicles for indicator lights.

[0035] According to some embodiments of the present invention, such as Figure 3 and Figure 4 As shown, the focusing unit 121 includes multiple focusing units, each of which includes multiple focusing surfaces 1211. By dividing the focusing unit 121 into multiple focusing units, modular optical management of the light source can be achieved, optimizing the optical path layout. For example, one focusing unit is used to converge the light emitted by one group of light sources to form amber parallel light, while another focusing unit is used to converge the light emitted by another group of light sources to form blue parallel light.

[0036] Within the same focusing unit, multiple focusing surfaces 1211 are arranged at intervals in the width direction, enabling the focusing unit to adapt to a group of light sources with the same function and to independently and efficiently converge the light emitted by the group of light sources, ensuring the uniformity and directionality of the light.

[0037] Different focusing units are arranged at intervals along the length, so that each focusing unit can correspond to a string of lights with different functions or colors, such as turn signals and autonomous driving indicators, respectively, to achieve physical separation and independent optimization of the optical path.

[0038] According to some embodiments of the present invention, the light-emitting module 13 includes multiple light strings, each light string including multiple light sources arranged at intervals between each other. Each light string corresponds to an independently controlled light signal function or color, such as corresponding to the vehicle's turn signal indication function and autonomous driving status indication function, respectively. By organizing the light sources into light strings, not only is it easier to realize circuit connection and control logic, but it also ensures centralized management and synchronous operation of light sources with the same function.

[0039] Each light string is paired with a focusing unit, ensuring that the optical paths of different light strings are physically independent and do not interfere with each other. The light-emitting center of each light source in each light string is adapted to the optical focal position of a different focusing surface 1211 in its corresponding focusing unit, ensuring that the light emitted by each light source in the same light string can be converged by the corresponding focusing surface 1211, thereby improving the light output effect of the indicator light assembly 1.

[0040] According to some embodiments of the present invention, within the same focusing unit, the spacing between two adjacent focusing surfaces 1211 is 'a' and satisfies the following condition: a ≤ 1 mm, meaning the spacing between adjacent focusing surfaces 1211 does not exceed 1 mm. This ensures that the same focusing unit can closely adapt to a group of light sources with the same function, independently and efficiently converging the light emitted by that group of light sources. A smaller spacing helps to more precisely control the light propagation path, reducing scattering and loss of light during propagation, thereby ensuring the uniformity and directionality of light convergence, further improving the light emission effect of the indicator light assembly 1, and meeting the high-quality requirements of autonomous vehicles for indicator lights.

[0041] According to some embodiments of the present invention, such as Figure 3 and Figure 4 As shown, the light guide plate 12 has a reflective surface 122, which guides the light rays converged by the focusing section 121 to the light-emitting surface 123. The focusing section 121 has already focused the light emitted by the light source, making the light more concentrated and forming a set of parallel light rays that are directed toward the reflective surface 122. The reflective surface 122 uses the principle of light reflection to change the direction of light propagation and guide the light rays to the light-emitting surface 123.

[0042] The reflective surface 122 is opposite to the light-emitting surface 123 and is set at an acute angle to the light-emitting surface 123. The reflective surface 122 is used to guide the light focused by the light-concentrating part 121 to the light-emitting surface 123. By setting the reflective surface 122, the propagation direction of the light focused by the light-concentrating part 121 can be effectively changed, and it can be accurately reflected and guided to the light-emitting surface 123. This can further optimize the light path, reduce the ineffective propagation and energy loss of light inside the light guide plate 12, and ensure that more light can be emitted from the light-emitting surface 123 efficiently, thereby improving the overall light output efficiency and uniformity, and enhancing the visual effect and signal recognition of the indicator light assembly 1.

[0043] According to some embodiments of the present invention, such as Figure 4 As shown, the angle between the reflecting surface 122 and the light-emitting surface 123 is α and satisfies: α ≥ 45°. By setting the angle between the reflecting surface 122 and the light-emitting surface 123 to be no less than 45°, the optical path length and reflection efficiency can be optimized while ensuring effective light guidance. A larger angle helps the light to undergo total internal reflection or specular reflection at a more ideal angle on the reflecting surface 122, reducing light energy loss and causing the light to be directed more concentratedly and evenly onto the light-emitting surface 123, thereby further improving the brightness and uniformity of the emitted light and meeting the high-quality optical performance requirements of the indicator light assembly 1.

[0044] According to some embodiments of the present invention, such as Figure 4As shown, the length of the light guide plate 12 along its light propagation direction is d and satisfies: d ≥ 35 mm. By limiting the length d of the light guide plate 12 along its light propagation direction to not less than 35 mm, it is ensured that the light can be fully conducted, mixed, and homogenized inside the light guide plate 12 from entering the light guide plate 12 to finally exiting from the light emitting surface 123. A longer light path is beneficial to improving the uniformity of light distribution, reducing local bright spots or dark areas, and making the final light output effect softer and more consistent, thereby meeting the requirements of vehicle indicator lights for high-quality visual performance and long-distance recognition.

[0045] According to some embodiments of the present invention, such as Figure 2 As shown, the outer casing 11 includes a rear casing 111 and a light-transmitting cover 112. The rear casing 111 has a light-emitting port. The light source is disposed inside the rear casing 111, and the light emitted by the light source is conducted through the light guide plate 12 and then through the light-emitting port to the light-transmitting cover 112.

[0046] The light-transmitting cover 112 is connected to the rear housing 111 and covers the light outlet, allowing light emitted from the light-emitting surface 123 of the light guide plate 12 to pass through the light-transmitting cover 112 and be emitted outward. A receiving cavity is defined between the light-transmitting cover 112 and the rear housing 111. This receiving cavity provides installation space for components such as the light guide plate 12 and the light-emitting module 13 inside the indicator light assembly 1. The light-transmitting cover 112 is constructed as a transparent component, thus possessing high light transmittance and allowing light to pass through.

[0047] By splitting the outer shell 11 into a rear shell 111 and a light-transmitting cover 112, it is convenient to install components such as the light guide plate 12 and the light-emitting module 13 inside the indicator light assembly 1 into the receiving cavity. Furthermore, given the functional differences between the rear shell 111 and the light-transmitting cover 112, they can be manufactured using different materials.

[0048] According to some embodiments of the present invention, the light-emitting module is a PCBA module, which is positioned by a limiting post on the light guide plate and fixedly connected to the light guide plate by a hot riveting process.

[0049] According to some embodiments of the present invention, the light-emitting surface and / or the inner surface of the light guide plate facing the light-emitting surface are provided with microstructure patterns for uniform light diffusion.

[0050] According to some embodiments of the present invention, the microstructure pattern is one or more of the following: corn kernel pattern, vertical stripes, or horizontal stripes.

[0051] The following is for reference. Figure 5 A brief description of the control system according to the present invention.

[0052] like Figure 5 As shown, the control system according to the present invention includes an autonomous driving domain controller, a body domain controller, and an indicator light assembly 1, which can realize the function of indicating the vehicle driving status and realize the information transmission of autonomous vehicles.

[0053] The autonomous driving domain controller is used to acquire the vehicle's driving status and generate corresponding indication signals.

[0054] During autonomous driving, vehicles need to perceive various information in real time, including their surrounding environment and their own motion status. The autonomous driving domain controller integrates data from multiple sensors (such as cameras, radar, and lidar), and uses algorithms and models to process and analyze the data to determine the vehicle's current driving status. Based on this determination, the autonomous driving domain controller generates corresponding indication signals. These signals serve as the basis for subsequent information transmission and processing. Different driving states correspond to different indication signals; for example, normal autonomous driving, preparing to change lanes, and encountering an emergency all generate indication signals with specific meanings.

[0055] The vehicle domain controller communicates with the autonomous driving domain controller and is used to receive indication signals. After receiving the indication signal, the vehicle domain controller has the ability to independently control the lighting and extinguishing of different light sources in the light-emitting module 13, and can control the working status of each light source in the indicator light assembly 1 according to the specific content of the indication signal.

[0056] The indicator light assembly 1 is electrically connected to the vehicle body domain controller, enabling the vehicle body domain controller to control the light-emitting module 13 within the indicator light assembly 1. When the vehicle body domain controller controls different light sources in the light-emitting module 13 to turn on and off according to indication signals, the indicator light assembly 1 can convert these light signals into visible visual information, displaying the vehicle's driving status to the outside world. The indicator light assembly 1 is constructed as shown in any of the above embodiments. Since the control system according to the present invention includes the indicator light assembly 1 in any of the above embodiments, the control system according to the present invention can accurately and flexibly display the vehicle driving status, thereby improving the reliability and safety of autonomous driving information transmission.

[0057] The vehicle according to the present invention is briefly described below.

[0058] The vehicle according to the present invention includes the indicator light assembly 1 of any of the above embodiments. Because the vehicle according to the present invention includes the indicator light assembly 1 of any of the above embodiments, the vehicle according to the present invention can more clearly and accurately convey driving intentions to the outside world, effectively improving road interaction safety and smoothness.

[0059] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0060] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An indicator light assembly for a vehicle, characterized in that, include: The outer shell (11) has a receiving cavity formed inside it; A light guide plate (12) is disposed in the receiving cavity and connected to the outer shell (11). The light guide plate (12) has a light emitting surface (123) facing the light emitting end of the outer shell (11). The light guide plate (12) has a light focusing part (121). The light focusing part (121) includes multiple light focusing surfaces (1211) with different optical focal points. The light-emitting module (13) is disposed in the cavity and connected to the light guide plate (12). The light-emitting module (13) includes multiple light sources, and the multiple light sources are arranged in a one-to-one correspondence with the multiple light-concentrating surfaces (1211). The light-emitting center of each light source is adapted to the optical focal position of one of the light-concentrating surfaces (1211) corresponding to it.

2. The indicator light assembly according to claim 1, characterized in that, The light-concentrating part (121) includes a plurality of light-concentrating units, and each light-concentrating unit includes a plurality of light-concentrating surfaces (1211). Within the same light-concentrating unit, a plurality of light-concentrating surfaces (1211) are arranged at intervals in the width direction; The different focusing units are arranged at intervals along the length direction.

3. The indicator light assembly according to claim 2, characterized in that, The light-emitting module (13) includes multiple light strings, each of which includes multiple light sources spaced apart from each other; Each of the light strings is provided with a corresponding focusing unit, and the light-emitting center of each light source in each light string is adapted to the optical focal position of a different focusing surface (1211) in its corresponding focusing unit.

4. The indicator light assembly according to claim 2, characterized in that, Within the same light-concentrating unit, the distance between two adjacent light-concentrating surfaces (1211) is a and satisfies: a≤1mm.

5. The indicator light assembly according to claim 1, characterized in that, The light guide plate (12) has a reflective surface (122), which is opposite to the light emitting surface (123) and is set at an acute angle to the light emitting surface (123). The reflective surface (122) is used to guide the light rays converged by the light focusing part (121) to the light emitting surface (123).

6. The indicator light assembly according to claim 5, characterized in that, The angle between the reflecting surface (122) and the light-emitting surface (123) is α and satisfies: α≥45°.

7. The indicator light assembly according to claim 1, characterized in that, The length of the light guide plate (12) along its light propagation direction is d and satisfies: d≥35mm.

8. The indicator light assembly according to claim 1, characterized in that, The outer casing (11) includes: The rear shell (111) has a light outlet. A light-transmitting cover (112) is connected to the rear shell (111) and covers the light outlet. The light-transmitting cover (112) and the rear shell (111) define the receiving cavity. The light-transmitting cover (112) is constructed as a transparent component.

9. A control system, characterized in that, include: An autonomous driving domain controller, which is used to acquire the vehicle's driving status and generate corresponding indication signals; A body domain controller, which is communicatively connected to the autonomous driving domain controller and is used to receive the indication signal; An indicator light assembly, which is electrically connected to the vehicle domain controller, wherein the indicator light assembly is configured as described in any one of claims 1-8; The vehicle body domain controller is configured to independently control the lighting and extinguishing of different light sources in the light-emitting module (13) according to the indication signal.

10. A vehicle, characterized in that, Includes the indicator light assembly as described in any one of claims 1-8.

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