CN120313011A

CN120313011A - A full-spectrum FCOB light strip and control method thereof

Info

Publication number: CN120313011A
Application number: CN202510727046.1A
Authority: CN
Inventors: 梁俊; 黄钢; 汤世玉
Original assignee: Shenzhen Rishang Photoelectric Co ltd
Current assignee: Shenzhen Rishang Photoelectric Co ltd
Priority date: 2025-06-03
Filing date: 2025-06-03
Publication date: 2025-07-15

Abstract

The present invention provides a full-spectrum FCOB light strip and a control method thereof, wherein the full-spectrum FCOB light strip comprises a substrate, a plurality of LED chips and a fluorescent glue for encapsulating the LED chips; the plurality of LED chips comprises a plurality of low-band flip chips and a plurality of high-band flip chips, and the plurality of short-band flip chips and the plurality of high-band flip chips are arranged in an array and alternately on the substrate. The present invention has the following effects: reducing blue light radiation, reducing eye fatigue, protecting eyesight, and having a significant eye protection effect.

Description

Full-spectrum FCOB lamp band and control method thereof

Technical Field

The invention relates to the technical field of decorative lighting, in particular to a full-spectrum FCOB lamp strip and a control method thereof.

Background

The existing FCOB (Full Chip On Board) light bands are widely applied in the market, but most light bands can only provide illumination with single color temperature, and cannot meet the requirements of natural light, plant growth and multi-scene application. The lamp band in the prior art has limited spectrum and can not cover the full spectrum requirement, and particularly has obvious defects in the aspects of eye protection, healthy illumination, plant illumination, human body biological rhythm adjustment and the like.

Disclosure of Invention

The invention aims to provide a full-spectrum FCOB lamp strip and a control method thereof, which are used for solving the problems that the existing FCOB lamp strip is narrow and single in illumination range, cannot meet the requirements on natural light, plant growth and multi-scene application, and cannot cover the full spectrum.

In one aspect, the invention provides a full spectrum FCOB lamp band, which comprises a substrate, a plurality of LED chips and fluorescent glue for packaging the LED chips;

the LED chips comprise a plurality of low-band flip chips and a plurality of high-band flip chips, and the low-band flip chips and the high-band flip chips are arranged in an array and are alternately arranged on the substrate.

The low-wave band flip chip is a short-wave blue light flip chip, and the high-wave band flip chip is a long-wave blue light flip chip.

The peak wavelength range of the short-wave blue light flip chip is 447.5nm-450nm, and the peak wavelength range of the long-wave blue light flip chip is 457.5nm-460nm.

The ratio of the number of the short-wave blue light flip chips to the number of the long-wave blue light flip chips is 1:1.

The fluorescent glue comprises silica gel, green fluorescent powder, red fluorescent powder and far-red fluorescent powder, wherein the peak wavelength range of the green fluorescent powder is 511.5-513.5nm, the wavelength range of the red fluorescent powder is 651.5-653.5nm, the wavelength range of the far-red fluorescent powder is 711.5-748.5nm, and the weight ratio of the green fluorescent powder to the red fluorescent powder to the far-red fluorescent powder is 1 (0.11-0.24) (0.06-0.14).

In one aspect, a control method of a full spectrum FCOB lamp band is provided, and the control method includes:

Acquiring the number of each LED chip;

and controlling a plurality of LED chips according to the numbers.

The obtaining the number of each LED chip includes:

The method comprises the steps of storing the position of each LED chip to a preset database, establishing a rectangular coordinate system on the plane of a substrate, obtaining the coordinates of each LED chip in the rectangular coordinate system, and storing the coordinates of each LED chip to the database;

And generating a number according to the position in the database.

The controlling the plurality of LED chips according to the number includes:

Grouping LED chips with the same color;

generating multiple channels according to the grouping and the numbering;

The colors and/or the brightness of the LED chips of different groups are respectively controlled according to the multiple channels.

The generating multiple channels according to the grouping and the numbering comprises the following steps:

Generating R channels by the serial numbers of the LED chips in the red marshalling and the red marshalling;

Generating a G channel by the serial numbers of the LED chips in the green grouping and the grouping;

the blue group and the serial numbers of the LED chips in the group are used for generating a B channel.

The method for respectively controlling the colors and/or the brightness of the LED chips of different groups according to the multiple channels comprises the following steps:

sensing the state of ambient light;

And respectively controlling the color and/or brightness of the multi-channel output according to the state of the ambient light.

As described above, the full-spectrum FCOB lamp band and the control method thereof have the following beneficial effects:

By adopting the full spectrum FCOB light source and the blue light resistant design, illumination close to natural light is provided, blue light radiation is reduced, eye fatigue is reduced, vision is protected, and eye protection effect is obvious. The color temperature and the luminance in lamp area are adjustable, and the user can select 2700K, 3000K, 4000K, 5000K colour temperature according to the demand, adapts to the illumination demand of different time quantum, provides more comfortable visual experience. The application of the FCOB technology improves the efficiency of the light source, reduces energy consumption, and prolongs the service life of the lamp strip. Can auto-induction environment light changes to adjust according to the demand, make light be in the best state all the time, reduce unnecessary electric power waste.

Drawings

Fig. 1 is a schematic structural diagram of a full spectrum FCOB lamp strip according to an embodiment of the present invention.

Detailed Description

Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.

It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present invention by way of illustration, and only the components related to the present invention are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.

It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the invention, are not intended to be critical to the essential characteristics of the invention, but are intended to fall within the spirit and scope of the invention. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a full spectrum FCOB lamp band according to an embodiment of the present invention, where the full spectrum FCOB lamp band includes a substrate 1, a plurality of LED chips 2, and a fluorescent glue 3 for encapsulating the LED chips 2, and the plurality of LED chips 2 include a plurality of low band flip chips 21 and a plurality of high band flip chips 22, and the plurality of low band flip chips 21 and the plurality of high band flip chips 22 are arranged in an array and alternately on the substrate 1.

In this embodiment, the plurality of LED chips 2 are arranged on the substrate 1 in a single row, and the lamp band passes through the LED array with a specific design, and adopts a dual-band blue light excitation special scheme phosphor powder mode, so as to ensure that the spectrum range is wider and the color saturation is higher. The LED chip 2 of the lamp strip is a flip-chip LED light source, can provide high brightness output, and has longer service life.

The low-band flip chip 21 is a short-wave blue light flip chip, and the high-band flip chip 22 is a long-wave blue light flip chip. The peak wavelength range of the short-wave blue light flip chip is 447.5nm-450nm, and the peak wavelength range of the long-wave blue light flip chip is 457.5nm-460nm. The ratio of the number of the short-wave blue light flip chips to the number of the long-wave blue light flip chips is 1:1.

In this embodiment, the blue spectral output of the lamp strip includes, but is not limited to, the wavelength band of 447.5nm-450nm+457.5nm-460nm. The reason why the ratio of the number of the short-wave blue light flip chips to the number of the long-wave blue light flip chips is 1:1 is that the absorption degree of fluorescent powder to the chips after the combination of the blue light flip chips with various wave bands is different, and the ratio of the number of the short-wave blue light flip chips to the number of the long-wave blue light flip chips is 1:1 is preferred, so that the emission color of the FCOB light source is uniform.

The fluorescent glue 3 comprises silica gel, green fluorescent powder, red fluorescent powder and far red fluorescent powder, wherein the peak wavelength range of the green fluorescent powder is 511.5-513.5nm, the wavelength range of the red fluorescent powder is 651.5-653.5nm, the wavelength range of the far red fluorescent powder is 711.5-748.5nm, and the weight ratio of the green fluorescent powder to the red fluorescent powder to the far red fluorescent powder is 1 (0.11-0.24) (0.06-0.14).

In this embodiment, when the peak wavelength of the green phosphor is preferably 512nm, the peak wavelength of the red phosphor is preferably 652nm, and the peak wavelength of the far red phosphor is preferably 735nm, the FCOB lamp band has the highest light efficiency, the best spectral continuity, and the highest yield with a color rendering index of 99 or more. The weight ratio of the green fluorescent powder to the red fluorescent powder to the far red fluorescent powder is 1 (0.11-0.24): 0.06-0.14, based on the weight ratio, the FCOB lamp band can realize the range from low color temperature (2200K) to high color temperature (7000K), the spectrum is close to the solar spectrum, and the color rendering index (Ra) can reach more than 99. The collocation of the green fluorescent powder, the red fluorescent powder and the far red fluorescent powder plays an important role in improving the spectrum continuity and improving the color rendering index Ra, the color saturation Rg and the color fidelity Rf.

In addition, the proportion of blue light can be reduced by suppressing blue light by a multicolor LED mixing technique. For example, blue light emitted from a blue LED chip excites a yellow phosphor to produce yellow light, which is then mixed with the blue light to form white light. The proportion of the fluorescent powder and the structure of the LED are adjusted, so that the proportion of blue light can be reduced, and the effect of inhibiting the blue light is achieved. Namely, blue light can be effectively inhibited by mixing the green fluorescent powder, the red fluorescent powder and the far red fluorescent powder in a weight ratio of 1 (0.11-0.24) to 0.06-0.14.

In the process of manufacturing the full-spectrum FCOB lamp band, the full-spectrum FCOB lamp band can be set into specifications of different lengths (such as 1 meter, 2 meters, 5 meters and the like) and different powers (such as 10W/m, 20W/m and the like) according to user requirements, and is suitable for different use environments. The full-spectrum FCOB lamp band is suitable for places such as families, offices, study rooms, bedrooms and the like, is particularly suitable for environments in which computers, mobile phones or other electronic equipment are required to be used for a long time, and can effectively relieve asthenopia. The lamp strip adopts high-efficient heat dissipation material and structural design, effectively improves thermal management performance, increase of service life. The full-spectrum FCOB lamp strip provided by the invention solves the defects of narrow and single illumination range in the prior art, and provides more diversified and intelligent illumination experience. The lamp strip not only can meet the requirement of conventional illumination, but also can meet the special requirements of eye protection, healthy illumination, plant growth, healthy illumination and the like, and has wide application prospect.

Based on the full-spectrum FCOB lamp band, the scheme provides a control method of the full-spectrum FCOB lamp band, and the control method comprises the following steps of S1-S2:

s1, obtaining the number of each LED chip 2, wherein the step S1 comprises the steps of S11-S12:

S11, storing the position of each LED chip 2 to a preset database, wherein the step S11 comprises the steps of S111-S112:

S111, establishing a rectangular coordinate system with the plane of the substrate 1, and acquiring the coordinates of each LED chip 2 in the rectangular coordinate system.

In this embodiment, a rectangular coordinate system may be established with the plane in which the substrate 1 is located, the LED chip 2 disposed at the leftmost side of the substrate 1 as the origin of coordinates, and a line connecting the origin of coordinates and parallel to the bottom edge of the substrate 1 as the x-axis. Therefore, the coordinates of each LED chip 2 are marked by the rectangular coordinate system, so that the position of each LED chip 2 can be clearly known, and the arrangement condition and the position of each LED chip 2 can be quickly restored on other software platforms.

S112, storing the coordinates of each LED chip 2 in the database.

S12, generating a number in the database according to the position.

In this embodiment, a number is generated for each LED chip 2, and the position and coordinates thereof are associated, and the position and coordinates of the LED chip 2 can be obtained by the number.

S2, controlling a plurality of LED chips 2 according to the number. Step S2 includes steps S21-S23:

s21, grouping the LED chips 2 with the same color.

In this embodiment, through the combined action of different LED chips 2 and different fluorescent glue 3, the LED chips 2 can emit light with different colors and intensities through the fluorescent glue 3, the combination of the fluorescent glue 3 and the LED chips 2 is preset and stored in the database, the information of the LED chips 2 emitting the same color stored in the database is found according to the combination, and the LED chips 2 corresponding to the same color are organized into the same group.

S22, generating multiple channels according to the grouping and the number, wherein the step S22 comprises the steps S221-S223:

s221, generating R channels by the red grouping and the serial numbers of the LED chips 2 in the red grouping;

s222, generating a G channel by the number of the LED chips 2 in the green grouping and the grouping;

S223, generating a B channel by the serial number of the LED chips 2 in the blue grouping and the grouping.

In this embodiment, red, green, blue (and white light) may be mixed to realize multiple colors, and the brightness ratio of each channel needs to be controlled.

S23, respectively controlling the colors and/or the brightness of the LED chips 2 of different groups according to the multiple channels. Step S23 includes steps S231-S232:

S231, sensing the state of the ambient light.

In this embodiment, the change of ambient light can be sensed by a light dependent Resistor (LDR-LIGHT DEPENDENT Resistor), which is based on the principle that the resistance of the light dependent Resistor changes with the intensity of illumination (the stronger the illumination, the lower the resistance). The circuit design is that a voltage division circuit is formed by the circuit design and the fixed resistor, and the illumination intensity is judged by measuring the voltage change. Is suitable for the output of an analog signal, the digital value is read by matching with an ADC (analog-digital converter). Has the advantages of low cost, simplicity and easy use. The method has the defects of lower precision and slow response speed (suitable for low-frequency detection).

The change of the ambient light can also be sensed by an integrated ambient light sensor (ALS-Ambient Light Sensor) by a principle that a special chip (such as APDS-9301, BH1750 and TSL 2561) directly outputs a digital signal. The interface is I2C, SPI or PWM output. Supporting automatic span adjustment. Visible light and human eye sensitivity spectra (near human eye perception) can be measured. The advantages are high precision, anti-interference (such as infrared filtering) and low power consumption.

S232, respectively controlling the color and/or brightness of the multi-channel output according to the state of the ambient light.

In this embodiment, the color and/or brightness of the multi-channel output is controlled by the environment. For example, red light needs to be output and the maximum intensity is required, the database is used for searching the LED chips 2 capable of emitting red light, and all the LED chips 2 capable of emitting red light are controlled to output light with the maximum power.

In summary, the present disclosure provides a full spectrum FCOB lamp strip, which can provide a wider spectrum output, ra >99, and R1-R15>90 in a full spectrum range, and adapt to different illumination requirements, and especially can satisfy the requirements of eye protection, health illumination, plant illumination, human biological rhythm adjustment, and high quality illumination. The color rendering index has 15 colors, and R1-R15 respectively correspond to the colors of light grey red, dark grey yellow, saturated yellow green, medium yellow green, light blue, light purple, saturated red light, saturated yellow, saturated green, saturated blue, white, tree leaf green and yellow.

The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims

1. A full-spectrum FCOB light strip, characterized by comprising a substrate, a plurality of LED chips and a fluorescent glue for encapsulating the LED chips;

The plurality of LED chips include a plurality of low-band flip chips and a plurality of high-band flip chips, and the plurality of low-band flip chips and the plurality of high-band flip chips are arranged in an array and alternately on the substrate.

2. The full-spectrum FCOB light strip according to claim 1, characterized in that the low-band flip chip is a short-wave blue light flip chip, and the high-band flip chip is a long-wave blue light flip chip.

3. The full-spectrum FCOB light strip according to claim 2, characterized in that the peak wavelength of the short-wave blue light flip chip is in the range of 447.5nm-450nm, and the peak wavelength of the long-wave blue light flip chip is in the range of 457.5nm-460nm.

4. The full-spectrum FCOB light strip according to claim 2, characterized in that the ratio of the number of the short-wave blue light flip chips to the number of the long-wave blue light flip chips is 1:1.

5. The full-spectrum FCOB light strip according to claim 1 is characterized in that the fluorescent glue comprises silica gel, green phosphor, red phosphor and far-red phosphor, the peak wavelength of the green phosphor is in the range of 511.5-513.5 nm, the wavelength of the red phosphor is in the range of 651.5-653.5 nm, the wavelength of the far-red phosphor is in the range of 711.5-748.5 nm, and the weight ratio of the green phosphor, the red phosphor and the far-red phosphor is 1:(0.11-0.24):(0.06-0.14).

6. A control method for a full-spectrum FCOB light strip, using the full-spectrum FCOB light strip according to any one of claims 1 to 5, characterized in that the control method comprises:

Get the number of each LED chip;

The plurality of LED chips are controlled according to the numbers.

7. The control method according to claim 6, wherein obtaining the serial number of each LED chip comprises:

Storing the position of each LED chip in a preset database; wherein a rectangular coordinate system is established with the plane where the substrate is located, obtaining the coordinates of each LED chip in the rectangular coordinate system, and storing the coordinates of each LED chip in the database;

A number is generated in the database according to the position.

8. The control method according to claim 6, wherein the controlling the plurality of LED chips according to the serial numbers comprises:

Group LED chips of the same color;

Generate multiple channels based on grouping and numbering;

The colors and/or brightness of LED chips in different groups are controlled separately according to multiple channels.

9. The control method according to claim 8, wherein the generating of multiple channels according to grouping and numbering comprises:

Generate the R channel by the numbers of the red group and the LED chips in the group;

Generate the G channel by the numbers of the green group and the LED chips in the group;

The blue group and the LED chip numbers in the group are used to generate the B channel.

10. The control method according to claim 8, characterized in that the color and/or brightness of LED chips in different groups are controlled separately according to multiple channels, comprising:

Sensing the state of ambient light;

Control the color and/or brightness of multiple channel outputs separately according to the ambient light status.