CN213662014U

CN213662014U - Color-stable lamp

Info

Publication number: CN213662014U
Application number: CN202022781928.1U
Authority: CN
Inventors: 揭勇; 马战龙
Original assignee: Zhengrui Technology Development Foshan Co ltd
Current assignee: Zhengrui Technology Development Foshan Co ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-07-09
Anticipated expiration: 2030-11-26

Abstract

The utility model discloses a lamp with stable color, which comprises a light-emitting module, a light-emitting module and a light-emitting module, wherein the light-emitting module comprises a red light-emitting component, a green light-emitting component and a blue light-emitting component; the temperature sensing module comprises a first temperature sensor, a second temperature sensor and a temperature sensing module, wherein the first temperature sensor is adjacent to the red light-emitting component and is configured to acquire the temperature of the red light-emitting component in a light-emitting state; a second temperature sensor adjacent to the green light emitting element and configured to acquire a temperature of the green light emitting element in a light emitting state; a third temperature sensor adjacent to the blue light emitting element and configured to acquire a temperature of the blue light emitting element in a light emitting state; the controller is electrically connected with the light-emitting module and the temperature sensing module and comprises a processor and a memory, the memory is configured to store the temperature wavelength drift curve of the light-emitting module, and the processor is configured to obtain the temperature detected by the temperature sensing module and adjust the light emission of the light-emitting module according to the temperature wavelength drift curve of the light-emitting module. The utility model discloses a lamps and lanterns can keep luminous color stable under long-time work.

Description

Color-stable lamp

Technical Field

The utility model belongs to the technical field of the technique of lamps and lanterns and specifically relates to a stable color's lamps and lanterns.

Background

The colored lamps and lanterns are mainly by the luminous in order to send required colour of red, green, blue LED banks combination, and some novel lamps and lanterns still add white LED lamp pearl in order to improve the luminance of product. There are also some new types of color lamps in the market, which use light emitting elements such as PMOLEDs to provide better light emitting quality.

In any lamp, the temperature of the light emitting element is increased when the lamp is turned on for a long time or in a hot environment such as summer. As the temperature of the light emitting element increases, the emitted color deviates from the standard color. For example, white LEDs may shift light to yellow at high temperatures, while green LEDs may suffer from brightness and color degradation at high temperatures. Such problems can lead to color instability in the light fixture.

SUMMERY OF THE UTILITY MODEL

To the deficiencies in the prior art, an object of the present invention is to provide a lamp with stable color.

An embodiment of the utility model provides a stable lamps and lanterns of color, include: the light-emitting module comprises a red light-emitting component, a green light-emitting component and a blue light-emitting component; the temperature sensing module comprises a first temperature sensor, a second temperature sensor and a temperature sensing module, wherein the first temperature sensor is adjacent to the red light-emitting component and is configured to acquire the temperature of the red light-emitting component in a light-emitting state; a second temperature sensor adjacent to the green light emitting element and configured to acquire a temperature of the green light emitting element in a light emitting state; a third temperature sensor adjacent to the blue light emitting element and configured to acquire a temperature of the blue light emitting element in a light emitting state; the controller is electrically connected with the light-emitting module and the temperature sensing module and comprises a processor and a memory, the memory is configured to store the temperature wavelength drift curve of the light-emitting module, and the processor is configured to obtain the temperature detected by the temperature sensing module and adjust the light emission of the light-emitting module according to the temperature wavelength drift curve of the light-emitting module.

In some embodiments, the red light emitting assembly comprises a red light emitting element and a first driver, the green light emitting assembly comprises a green light emitting element and a second driver, and the blue light emitting assembly comprises a blue light emitting element and a third driver; the processor is connected to the first, second and third drivers through a Pulse Width Modulation (PWM) pin and is configured to control power of the first, second and third drivers through a PWM duty cycle.

In some embodiments, the light emitting module further comprises a white light emitting assembly including a white light emitting element and a fourth driver; the temperature sensing module also comprises a fourth temperature sensor, which is adjacent to the white light-emitting component and is configured to acquire the temperature of the white light-emitting component in a light-emitting state; the processor is connected to the fourth driver through a Pulse Width Modulation (PWM) pin and is configured to control power of the fourth driver through a PWM duty cycle.

In some embodiments, the red light emitting elements are a group of red LED beads, the green light emitting elements are a group of green LED beads, the blue light emitting elements are a group of blue LED beads, and the white light emitting elements are a group of white LED beads.

In some embodiments, the light emitting module is grounded through a resistor.

The utility model provides a lamps and lanterns that color is stable, the temperature feedback through temperature sensor surveys the luminous module feeds back to the treater, and the treater contrasts temperature data and memory storage temperature wavelength drift curve data to the PWM duty cycle of the output colour ratio of the luminous module of adjustment, thereby it realizes that lamps and lanterns colour temperature is stable to keep luminous colour wavelength.

Drawings

Fig. 1 is a schematic block diagram of some embodiments of the present invention;

fig. 2 is a schematic block diagram of other embodiments of the present invention.

The reference numerals in the above description denote descriptions:

1. red light emitting element, 2, green light emitting element, 3, blue light emitting element, 4, white light emitting element, 5, resistor, 61, first driver, 62, second driver, 63, third driver, 64, fourth driver, 7, processor, 8, memory, 91, first temperature sensor, 92, second temperature sensor, 93, third temperature sensor, 94, fourth temperature sensor.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

As shown in fig. 1, some embodiments of the present invention provide a color-stabilized luminaire, including:

the light-emitting module comprises a red light-emitting component, a green light-emitting component and a blue light-emitting component; the red light emitting assembly comprises a red light emitting element 1 and a first driver 61 electrically connected thereto, the green light emitting assembly comprises a green light emitting element 2 and a second driver 62 electrically connected thereto, and the blue light emitting assembly comprises a blue light emitting element 3 and a third driver 63 electrically connected thereto.

The temperature sensing module comprises a first temperature sensor 91, which is adjacent to the red light-emitting element 1 and acquires the temperature of the red light-emitting element in a light-emitting state; a second temperature sensor 92 which is adjacent to the green light emitting element 2 and acquires the temperature of the green light emitting element in the light emitting state; a third temperature sensor 93 adjacent to the blue light emitting element 3 and acquiring a temperature of the blue light emitting element 3 in a light emitting state;

and the controller is electrically connected with the light-emitting module and the temperature sensing module and comprises a processor 7 and a memory 8, the memory is configured to store the temperature wavelength drift curve of each light-emitting element of the light-emitting module, and the processor is configured to obtain the temperature of each light-emitting element detected by the temperature sensing module and adjust the light emission of the light-emitting element according to the temperature wavelength drift curve of the light-emitting element.

As shown in fig. 2, an embodiment of the present invention provides a color-stabilized lamp, including:

the light emitting module comprises a red light emitting component, a green light emitting component, a blue light emitting component and a white light emitting component; the red light emitting assembly includes a red light emitting element 1 and a first driver 61 electrically connected thereto, the green light emitting assembly includes a green light emitting element 2 and a second driver 62 electrically connected thereto, the blue light emitting assembly includes a blue light emitting element 3 and a third driver 63 electrically connected thereto, and the white light emitting assembly includes a white light emitting element 4 and a fourth driver 64 electrically connected thereto.

The temperature sensing module comprises a first temperature sensor 91, which is adjacent to the red light-emitting element 1 and acquires the temperature of the red light-emitting element in a light-emitting state; a second temperature sensor 92 which is adjacent to the green light emitting element 2 and acquires the temperature of the green light emitting element in the light emitting state; a third temperature sensor 93 adjacent to the blue light emitting element 3 and acquiring a temperature of the blue light emitting element 3 in a light emitting state; the fourth temperature sensor 94 is adjacent to the white light emitting element 4 and acquires the temperature of the white light emitting element 4 in the light emitting state.

In the embodiment of the present invention, the light emitting element can be any available light emitting device in the field, for example, can be an LED lamp bead, an OLED light emitting device, or a QLED light emitting device.

The utility model discloses an in one embodiment, light emitting component is LED lamp pearl group, and for example red light emitting component is red LED lamp pearl group, and green light emitting component is green LED lamp pearl group, and blue light emitting component is blue LED lamp pearl group, and white light emitting component is white LED lamp pearl group.

In some embodiments, the processor is connected to the first, second, third and/or fourth drivers by a Pulse Width Modulation (PWM) pin and configured to control power of the first, second, third and/or fourth drivers by a PWM duty cycle. When the temperature of the light-emitting element acquired by the processor from the temperature sensor is too high, the power is reduced by adjusting the duty ratio through PWM, so that the lamp is prevented from being damaged or light-decayed due to the too high temperature, and the PWM duty ratio is continuously changed according to the temperature wavelength drift curve data stored in the memory in the temperature change, so that the color wavelength does not drift greatly, and the whole color is kept consistent at different temperatures.

The temperature wavelength drift curve data can be obtained by performing temperature test on the light-emitting elements of each color in the product test process, and is pre-stored in the memory. This data is also available in the datasheet details provided by the light-emitting element suppliers already on the market.

In the embodiment of the present invention, the processor may be a logic operation device having data processing capability and/or program execution capability, such as a Central Processing Unit (CPU), a field programmable logic array (FPGA), a single chip Microcomputer (MCU), a Digital Signal Processor (DSP), or an Application Specific Integrated Circuit (ASIC).

In embodiments of the present invention, the memory may be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, a mobile storage device, or any suitable combination of the foregoing.

For example, in one embodiment, the processor is a single chip microcomputer STM32F 446.

In some embodiments, each light emitting element is grounded through the resistor 5, the current of each light emitting element can be fed back to the processor through the resistor 5, and when the total current fed back to the processor by the resistor 5 is small, the output power ratio is automatically adjusted by controlling the corresponding driver through the PWM duty ratio, so that the power is automatically balanced, and the use process is simplified.

The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A color-stable light fixture, comprising: the light-emitting module comprises a red light-emitting component, a green light-emitting component and a blue light-emitting component; the temperature sensing module comprises a first temperature sensor, a second temperature sensor and a temperature sensing module, wherein the first temperature sensor is adjacent to the red light-emitting component and is configured to acquire the temperature of the red light-emitting component in a light-emitting state; a second temperature sensor adjacent to the green light emitting element and configured to acquire a temperature of the green light emitting element in a light emitting state; a third temperature sensor adjacent to the blue light emitting element and configured to acquire a temperature of the blue light emitting element in a light emitting state; the controller is electrically connected with the light-emitting module and the temperature sensing module and comprises a processor and a memory, the memory is configured to store the temperature wavelength drift curve of the light-emitting module, and the processor is configured to obtain the temperature detected by the temperature sensing module and adjust the light emission of the light-emitting module according to the temperature wavelength drift curve of the light-emitting module.

2. A light fixture as recited in claim 1, wherein the red light emitting assembly comprises a red light emitting element and a first driver, the green light emitting assembly comprises a green light emitting element and a second driver, and the blue light emitting assembly comprises a blue light emitting element and a third driver; the processor is connected to the first, second and third drivers through a Pulse Width Modulation (PWM) pin and is configured to control power of the first, second and third drivers through a PWM duty cycle.

3. A light fixture as recited in claim 2, wherein the lighting module further comprises a white light assembly comprising a white light element and a fourth driver; the temperature sensing module also comprises a fourth temperature sensor, which is adjacent to the white light-emitting component and is configured to acquire the temperature of the white light-emitting component in a light-emitting state; the processor is connected to the fourth driver through a Pulse Width Modulation (PWM) pin and is configured to control power of the fourth driver through a PWM duty cycle.

4. The lamp of claim 3, wherein the red light emitting elements are a group of red LED beads, the green light emitting elements are a group of green LED beads, the blue light emitting elements are a group of blue LED beads, and the white light emitting elements are a group of white LED beads.

5. The lamp of claim 1, wherein the light emitting module is grounded through a resistor.