US-12617334-B2 - Lamp system capable of reducing power consumption

US12617334B2US 12617334 B2US12617334 B2US 12617334B2US-12617334-B2

Abstract

A lamp system includes a light output device that includes at least one light source device, the at least one light source device including light sources, and a light source driver for driving the at least one light source device, and a processor to control an output of the light output device based on at least one of received vehicle state information, user input information, vehicle surrounding information, or any combination thereof.

Inventors

Myeong Je Kim

Assignees

HYUNDAI MOBIS CO., LTD.

Dates

Publication Date: 20260505
Application Date: 20231101
Priority Date: 20230117

Claims (16)

1 . A lamp system comprising: a light output device that includes: at least one light source device, the at least one light source device including a plurality of light sources; and a light source driver configured to drive the at least one light source device; and a processor configured to control an output of the light output device based on user input information and at least one of vehicle state information and vehicle surrounding information, wherein the vehicle state information includes at least one of vehicle navigation information, adaptive front lighting system (AFLS) driving mode information, temperature information of the light source device, or any combination thereof, wherein the processor is further configured to calculate surrounding area information based on the navigation information and control the output of the light source device based on the calculated surrounding area information, and wherein the processor is further configured to control the light output device so that the output of the light source device is smaller than a fourth predetermined reference in a high-illuminance area corresponding to at least one of a downtown area and a tunnel based on the surrounding area information.
2 . The lamp system of claim 1 , wherein the processor is further configured to: calculate a representative illuminance from the illuminance information; in response to the representative illuminance being lower than a first reference illuminance set in advance, control the light output device so that the output of the light source device is equal to or greater than a first predetermined reference set in advance, and in response to the representative illuminance being equal to or greater than the first reference illuminance set in advance, control the light output device so that the output of the light source device is smaller than the first predetermined reference as the illuminance increases.
3 . A lamp system comprising: a light output device that includes: at least one light source device, the at least one light source device including a plurality of light sources; and a light source driver configured to drive the at least one light source device; and a processor configured to control an output of the light output device based on user input information and at least one of vehicle state information and vehicle surrounding information, wherein the vehicle state information includes at least one of vehicle navigation information, adaptive front lighting system (AFLS) driving mode information, temperature information of the light source device, or any combination thereof wherein the processor is further configured to control the light output device so that the output of the light source device is smaller than a fifth predetermined reference based on AFLS driving mode information in response to a current location being in E-mode, which is a highway, or V-mode, which is a national highway.
4 . The lamp system of claim 1 , wherein the processor is further configured to: calculate brightness of each pixel based on the photographing information; calculate brightness indices obtained by digitizing the calculated brightness of each pixel, and in response to an average of the brightness indices for all the pixels being greater than a first reference index, control the light output device so that the output of the light source device is smaller than the second predetermined reference as an average of the brightness indices increases.
5 . The lamp system of claim 1 , wherein the processor is further configured to determine whether there is a vehicle in front of the host vehicle based on the surrounding vehicle information, in response to the determination that the vehicle in front is present, control the light output device so that the output of the light source device is smaller than a third predetermined reference, and in response to the determination that there is no vehicle in front, control the light output device so that the output of the light source device is equal to or greater than the third predetermined reference.
6 . The lamp system of claim 1 , wherein the processor is further configured to: control the light output device according to weather at a current location based on the weather information; and control the light output device so that the output of the light source device when the weather at the current location has high visibility is lower than an output of the light source device when the weather at the current location has low visibility.
7 . The lamp system of claim 1 , wherein the light source driver includes: a buck converter that has one end connected to a power supply, the buck converter configured to buck an input voltage received from the power supply under control of the processor and transmit the bucked input voltage to the light source device, while increasing the switching frequency in inverse proportion or stepwise; and a load capacitor that has one end connected to the other end of the buck converter, the other end connected to a ground, the load capacitor connected in parallel with the light source device, and wherein the buck converter includes: a converter switch that has one end connected to the power supply and selectively receives or blocks the input voltage of the power supply under the control of the processor; a reverse current prevention device that has one end grounded and the other end connected to the other end of the converter switch; and an inductor that has one end connected to the other end of the converter switch and the other end connected to the load.
8 . The lamp system of claim 1 , wherein the vehicle surrounding information includes at least one of illuminance information within a set range from the vehicle, photograph information photographed in a set direction from the vehicle, surrounding vehicle information within a set range from the vehicle, weather information, or any combination thereof.
9 . A lamp system for a vehicle, the system comprising: a light output device including a light source and a light source driver for driving the light source; and a processor configured to control light output by the light output device based on user input information and at least one of vehicle state information and vehicle surrounding information, wherein the processor is further configured to: control the light output device so that the output of the light is lower than a sixth predetermined reference in response to a temperature of the light source device being greater than reference temperature set in advance based on the temperature information of the light source device, and control the light output device so that the output of the light source device is equal to or greater than the sixth predetermined reference in response to the temperature of the light source unit being lower than the first reference temperature.
10 . The system of claim 9 , wherein the vehicle state information comprises at least one of vehicle navigation information, adaptive front lighting system (AFLS) driving mode information, temperature information of the light source, luminescence information of the light source or any combination thereof.
11 . The system of claim 9 , wherein the vehicle surrounding information includes at least one of illuminance information within a set range from the vehicle, photograph information photographed in a set direction from the vehicle, surrounding vehicle information within a set range from the vehicle, weather information, or any combination thereof.
12 . The lamp system of claim 3 , wherein the processor is further configured to: calculate an illuminance of output areas for each light source of the light source device from the illuminance for each of a plurality of areas included in the illuminance information; and control the light output device so that the corresponding light source is turned off in response to the calculated illuminance of the output areas for each light source being greater than a set second reference illuminance.
13 . The lamp system of claim 3 , wherein the processor is further configured to: calculate a representative illuminance from the illuminance information; in response to the representative illuminance being lower than a first reference illuminance set in advance, control the light output device so that the output of the light source device is equal to or greater than a first predetermined reference set in advance, and in response to the representative illuminance being equal to or greater than the first reference illuminance set in advance, control the light output device so that the output of the light source device is smaller than the first predetermined reference as the illuminance increases.
14 . The lamp system of claim 3 , wherein the processor is further configured to: control the light output device according to weather at a current location based on the weather information; and control the light output device so that the output of the light source device when the weather at the current location has high visibility is lower than an output of the light source device when the weather at the current location has low visibility.
15 . The lamp system of claim 3 , wherein the light source driver includes: a buck converter that has one end connected to a power supply, the buck converter configured to buck an input voltage received from the power supply under control of the processor and transmit the bucked input voltage to the light source device, while increasing the switching frequency in inverse proportion or stepwise; and a load capacitor that has one end connected to the other end of the buck converter, the other end connected to a ground, the load capacitor connected in parallel with the light source device, and wherein the buck converter includes: a converter switch that has one end connected to the power supply and selectively receives or blocks the input voltage of the power supply under the control of the processor; a reverse current prevention device that has one end grounded and the other end connected to the other end of the converter switch; and an inductor that has one end connected to the other end of the converter switch and the other end connected to the load.
16 . The lamp system of claim 3 , wherein the vehicle surrounding information includes at least one of illuminance information within a set range from the vehicle, photograph information photographed in a set direction from the vehicle, surrounding vehicle information within a set range from the vehicle, weather information, or any combination thereof.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S) This application claims priority under 35 U.S.C. § 119 to Korean Patent Application No. 10-2023-0006635, filed on Jan. 17, 2023, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety. BACKGROUND 1. Field The following disclosure relates to a lamp system capable of reducing power consumption, and more particularly, to a lamp system capable of reducing power consumption of a vehicle lamp by adjusting brightness of a beam of a lamp light source unit output through vehicle state information within a vehicle, user input information, or vehicle surrounding information outside a vehicle. 2. Description of Related Art Efforts are being made to reduce power consumption in the automobile field in accordance with CO2 emission regulations, and a trend of increasing the driving efficiency of lamps to reduce power consumption is actively progressing even in vehicle lamps with high power consumption. In order to reduce the power consumption of such vehicle lamps, Korean Patent Publication No. 10-2004-0027751 discloses reducing power consumption by improving a structure of a light source unit, that is, an LED lamp itself. However, there is a limit to reducing power consumption by improving the structure of the LED lamp, and for this, separate parts may be replaced or devices can be added, which may increase material costs. Therefore, it is necessary to study a method of reducing power consumption by optimizing and managing power consumption without such an increase in material cost. For example, in order to increase driving efficiency of vehicle lamps, power consumption may be reduced by adjusting the brightness of the lamp as necessary in consideration of the driving environment of the vehicle. In this way, improvement of a system capable of reducing power consumption of a lamp is required in consideration of various driving environments or surrounding environments of a vehicle. SUMMARY This Summary is provided to introduce a selection of concepts in simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter. In a general aspect of the disclosure, a lamp system includes a light output device that includes at least one light source device, the at least one light source device including a plurality of light sources, and a light source driver for driving the at least one light source device, and a processor configured to control an output of the light output device based on at least one of received vehicle state information, user input information, vehicle surrounding information, or any combination thereof, wherein the vehicle state information includes at least one of vehicle navigation information, adaptive front lighting system (AFLS) driving mode information, temperature information of the light source device, or any combination thereof. The processor may further be configured to calculate a representative illuminance from the illuminance information, in response to the representative illuminance being lower than a first reference illuminance set in advance, control the light output device so that the output of the light source device is equal to or greater than a first predetermined reference set in advance, and in response to the representative illuminance being equal to or greater than the first reference illuminance set in advance, control the light output device so that the output of the light source device is smaller than the first predetermined reference as the illuminance increases. The processor may further be configured to calculate an illuminance of output areas for each light source of the light source device from the illuminance for each of a plurality of areas included in the illuminance information, and control the light output device so that the corresponding light source is turned off in response to the calculated illuminance of the output areas for each light source being greater than a set second reference illuminance. The processor may further be configured to calculate brightness of each pixel based on the photographing information, calculate brightness indices obtained by digitizing the calculated brightness of each pixel, and in response to an average of the brightness indices for all the pixels being greater than a first reference index, control the light output device so that the output of the light source device is smaller than the second predetermined reference as an average of the brightness indices increases. The processor may further be configured to determine whether there is a vehicle in front based on the surrounding vehicle information, in response to the determination that there is a vehicle in front, control the light output device so that the output of the ligh