CN217689728U - Lighting device - Google Patents

Abstract

The utility model discloses a lighting device, which comprises a substrate, wherein lamp beads with different colors are arranged on the substrate at intervals; the lamp pearl of a plurality of different colours includes blue light lamp pearl, green light lamp pearl, red light lamp pearl, lemon light lamp pearl, cyan light lamp pearl and amber light lamp pearl are followed respectively first direction with the second direction is arranged in order to form the lamp pearl array, the lamp pearl array is most peripheral including red light lamp pearl, lemon light lamp pearl, cyan light lamp pearl and amber light lamp pearl, green light lamp pearl is not located the most peripheral of lamp pearl array, and the aforesaid is arranged and is favorable to colorful light of synthesizing to obtain the sunlight or the white light output of different colour temperatures.

Description

Lighting device

Technical Field

The utility model relates to the field of lighting technology, further relate to a lighting equipment.

Background

With the global promotion of energy conservation and emission reduction, fluorescent lamps and incandescent lamps of conventional household lighting are gradually eliminated, application scenes of LEDs are continuously increased, people only need to pay attention to the daily LED lighting with enough brightness, but in professional lighting such as photographic supplementary lighting, the lighting is vital, and due to the limitation of human visual effect, the subjective good lighting is not equal to the parameters recognized by a machine accurately.

The LED uses a blue light emitting chip to excite a yellow phosphor to obtain white light, because the LED lacks a red component, has poor spectral continuity, generally has a color rendering index of not more than 70, and has a color distorted to a different extent when an object is irradiated by a discontinuous spectrum. The existing lighting equipment generally adopts bicolor temperature or RGB light, the color gamut and the spectrum continuity of the existing lighting equipment are poorer than those of sunlight, and the special light supplementing requirement cannot be met.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide a lighting device aims at prior art's basis, solves one of the problem that prior art exists at least.

In a first aspect, to achieve the above object, an embodiment of the present invention provides a lighting device, including:

a substrate; and the number of the first and second groups,

the lamp beads with different colors are arranged on the substrate at intervals;

the lamp pearl of a plurality of different colours includes blue light lamp pearl, green light lamp pearl, red light lamp pearl, lemon light lamp pearl, cyan light lamp pearl and amber lamp pearl are followed respectively first direction with the second direction is arranged in order to form the lamp pearl array, the most periphery of lamp pearl array includes red light lamp pearl, lemon light lamp pearl, cyan light lamp pearl and amber lamp pearl, green light lamp pearl is not located the most periphery of lamp pearl array.

The embodiment of the utility model provides a lighting equipment utilizes multiple colour interval to arrange the fitting that realizes the solar spectrum, and accounts for and arranges the different colour lamp pearls that set corresponding quantity on comparing on the base plate, makes the spectral energy of colour mixture lamp pearl mix, because the required quantity of green glow is less placed at non-peripheral region, the aforesaid is arranged and is favorable to colorful closed light to acquire the sunlight or the white light output of different colour temperatures.

Drawings

The above features, technical features, advantages and modes of realisation of the present invention will be further described in the following detailed description of preferred embodiments thereof, which is to be read in conjunction with the accompanying drawings.

Fig. 1 is a schematic structural diagram of a lighting device provided in an embodiment of the present application;

fig. 2 is an enlarged schematic view of a lamp bead provided in the embodiment of the present application;

fig. 3 is a schematic view of an electrical driving structure of the lighting apparatus according to the embodiment of the present disclosure;

fig. 4 is a schematic simulation diagram of a lighting device provided in an embodiment of the present application;

fig. 5 is a schematic simulation diagram of an illumination device provided in an embodiment of the present application.

Detailed Description

In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

For the sake of simplicity, only the parts relevant to the present invention are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items and includes such combinations.

In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

In order to more clearly illustrate embodiments of the present invention or technical solutions in the prior art, specific embodiments of the present invention will be described below with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an illumination apparatus provided in an embodiment of the present application, where the illumination apparatus provided in the embodiment of the present application includes:

a substrate (2); and the number of the first and second groups,

a plurality of lamp pearl group 1, lamp pearl group 1 includes 5 kinds and above individual different colour lamp pearls, different colour lamp pearl intervals are arranged in order to form the lamp pearl array on the base plate 2. The lamp beads can be LEDs (light emitting diodes), organic light emitting diodes, quantum dot light emitting diodes and the like.

The lamp pearl of a plurality of different colours includes blue light lamp pearl, green light lamp pearl, red light lamp pearl, lemon light lamp pearl, cyan light lamp pearl and amber light lamp pearl are arranged along first direction and second direction respectively in order to form the lamp pearl array, the most periphery of lamp pearl array includes red light lamp pearl, lemon light lamp pearl, cyan light lamp pearl and amber light lamp pearl, green light lamp pearl is not located the most periphery of lamp pearl array.

Specifically, the substrate 2 includes a pad, a via hole, a through hole, a solder resist layer, a conductive circuit layer, a thermal conductive adhesive layer, and a heat dissipation plate. Wherein, the conducting wire layer is located between solder mask and the heating panel, and heat-conducting adhesive layer is located between conducting wire layer and the heating panel, and heat-conducting adhesive layer is used for connecting conducting wire layer and heating panel to transmit the heat of the luminous production of lamp pearl for the heating panel behind solder mask, conducting wire layer.

The shape of the substrate 2 may be various, such as square, circle, polygon, ellipse, or other regular or irregular patterns, and is not limited herein. The plurality of light emitting cells may be arranged on the substrate 2 in many shapes, such as a square, a circle, a polygon, an ellipse, or other regular or irregular patterns. Along 2 first directions on base plate, at least one set of lamp pearl of same colour is organized 1 and is included a plurality of lamp pearls of different wavelength, same colour the lamp pearl that the wavelength is different is not located the most outer of lamp pearl array. It can be understood that this application can include 5 kinds and above different colours, and arrange on base plate 2 with the array form, wherein have the lamp pearl of a set of same colour at least to include different wavelength, and the lamp pearl that quantity and proportion are minimum does not set up in the periphery outside to it is even to conveniently mix the light, and the lamp pearl that the quantity accounts for the minimum also does not set up in the periphery outside.

The same color of the present application is to be understood as different wavelength levels refined within the corresponding spectral bands of colors, such as colors with visual differences recognized by the human eye or machine, but still understood as the same class of colors of the present application, such as blue, which can be exemplified by light blue, neutral blue, dark blue, indigo, violet, and the like, all as blue light.

In some embodiments, the plurality of different colored lamp beads include 5 or more kinds of lamp beads emitting different colored light, which may include a Blue light lamp bead group (abbreviated as B), a Green light lamp bead group (abbreviated as G), a Red light lamp bead group (abbreviated as R), a Lime lemon light lamp bead group (abbreviated as L), a Cyan light lamp bead group (abbreviated as C), an amber light lamp bead group (abbreviated as a) and the like. In some embodiments, the size of red light lamp pearl, blue light lamp pearl, green light lamp pearl, amber light lamp pearl, cyan light lamp pearl and lemon light lamp pearl is the same to the convenience is arranged the light source. Of course, different sizes may be used, and are not limited herein. The number ratio of the blue light lamp bead 16, the green light lamp bead 12, the red light lamp bead 14, the lemon light lamp bead 13, the cyan light lamp bead 11 and the amber light lamp bead 15 can be. Wherein green light bead 12 accounts for the least and in the outermost periphery to be convenient for holistic a plurality of to close the light homogeneity.

Specifically, the inside lamp pearl quantity of each colour lamp pearl group 1 of this application can be a plurality ofly, and arrange with the form interval of array between the lamp pearl, through blue light lamp pearl 16, green light lamp pearl 12, red light lamp pearl 14, lemon light lamp pearl 13, cyan light lamp pearl 11 and amber light lamp pearl 15, the lamp pearl of six kinds of different colours altogether makes up 1 and closes luminous, can improve the light colour gamut, make the colour abundanter, the spectral continuity of adjusting luminance the acquisition is better, colour evaluation index height, more be close to the solar spectrum, and electric power density is big, the light power density of light is also great.

In this embodiment, the power ratios of the lamp beads with different colors are controlled by using different spectral band ratios, so that the spectral energy of the mixed-color lamp beads is mixed, and the light source output with different color temperatures is obtained to be close to the solar spectral output. The lamp pearl through different colours makes up 1 to be luminous so that a plurality of lamp pearls send the synthetic light in back and accords with the solar spectrum, not only can improve the light colour gamut, make the colour abundanter, the colour kind is many, monochromatic colour purity is high, it is better to adjust luminance white spectrum continuity moreover, RA (color rendering Index), SSI (Spectral Similarity Index), TLCI (Television Lighting Consistency Index) looks evaluation Index elevation.

The lamp bead groups 1 with the same color can be electrically connected in series, and can be electrically connected in parallel. The design power ratio of each color lamp bead can be the maximum value under the simulation of the set color temperature section.

Taking the white light with the color temperature range of 2800K-20000K as an example, 2800K white light is synthesized, and at this time, the power ratio R of the lamp beads: g: b: a: c: l = a ₁ ：b ₁ ：c ₁ ：d ₁ ：e ₁ ：f ₁ To synthesize 20000K white light, the power ratio R of the lamp bead: g: b: a: c: l = a _n ：b _n ：c _n ：d _n ：e _n ：f _n And the value of n is the difference between the highest value and the lowest value divided by the preset interval value, it can be understood that, in order to realize the light emission of 2800K-20000K, the real-time power of each color of R, G, B, a, C, and L is in the corresponding change, in order to realize that the real-time power of the LEDs of the above colors can meet the light emission of 2800K-20000K, the power values of each R, G, B, a, C, and L lamp beads can be calculated under the light emission parameter of 2800K-20000K, for example, the maximum power value of each color lamp bead can be found through list sorting and the like, and the maximum power value of each lamp bead of R, G, B, a, C, and L is taken as the power ratio thereof. The specific power ratio can be determined according to the maximum power value screened in the set color temperature segment (e.g., other color temperature segments), and is not limited herein.

The lamp beads of any color can comprise a blue light or purple light luminescent chip used for electric drive luminescence, and part of the lamp beads of the color are partially covered with fluorescent powder, namely excited by the fluorescent powder, certainly, the lamp beads of any color can not be covered with the fluorescent powder, but directly emit light by the chip. The light-emitting chip can be located the solder mask top, and the pin of light-emitting chip passes the solder mask and is connected with the conducting wire layer, and the pin and the pad electrical connection of light-emitting chip, wherein, the heat that the light-emitting chip produced when luminous during operation transmits for the heating panel and dispels the heat behind solder mask, the conducting wire layer in proper order. The light emitting chip can be one or more of a forward-mounted structure LED chip, a flip-chip structure LED chip and a vertical structure LED chip.

Preferably, the heat dissipation plate may be a copper plate or an aluminum plate or a ceramic plate. Because copper or aluminum plate or ceramic plate all are good heat conduction material to can derive the heat fast and distribute away, the life of extension lamp pearl and then reduce the attrition rate of lamp pearl.

In some embodiments, the blue light bead set can include a plurality of blue light beads 16, and the blue light beads 16 emit light in a spectral band ranging from 380nm to 475nm. Wherein blue light lamp pearl further can include a plurality of blue light lamp pearls of different wavelength.

Specifically, a plurality of blue light emitting chips with different wavelength peak values are arranged on the substrate 2, the number of the blue light emitting chips with each wavelength can be two, three, four or other numbers, and the pins of the blue light emitting chips are respectively connected with the positive electrode and the negative electrode of the direct current driving power supply. It can be understood that blue light lamp pearl group 1 can include wavelength diverse blue light lamp pearl that the wavelength increases gradually, for example first wavelength blue light lamp pearl, second wavelength blue light lamp pearl, third wavelength blue light lamp pearl, fourth wavelength blue light lamp pearl, and its quantity can be one or more respectively, and first to fourth wavelength blue light lamp pearl establish ties electric connection each other and forms blue light lamp pearl control channel to drive circuit. Of course, the first wavelength blue light bead, the second wavelength blue light bead, the third wavelength blue light bead, and the fourth wavelength blue light bead may also include one or more beads, and form their independent control channels, for example, a plurality of first wavelength blue light beads are independently connected in series and electrically connected to the driving circuit to form a first blue light control channel, and so on. Of course, it is contemplated that a smaller number of different wavelength blue lights may be electrically connected in series to the driver circuit, while a larger number of wavelength blue lights may be electrically connected in series to the driver circuit, thereby forming another number of control channels. It should be appreciated that the first through fourth wavelength blue light beads described above may be wavelength-graded refinements made over a larger spectral band, which may include, for example, violet, blue violet, indigo, deep blue, light blue, etc., in visual effect, and are generalized in this application to one or more of the first through fourth wavelength blue light. When the LED is powered on, the blue light emitting chip emits blue light to obtain light mainly protruding a blue light wave band, and the spectral distribution range of the light is 380 nm-475 nm. In the embodiment, the blue light emitting chips are electrically driven to emit light, so that the color purity of the emitted blue monochromatic light is high, and the blue light emitting chips with different wavelengths can provide a narrow-peak spectrum to increase the color gamut and the spectrum continuity, provide the color saturation of the color light mode, and realize higher fitting degree aiming at the light combination under an SSI curve.

In some embodiments, the red light lamp bead group, the green light lamp bead group, the amber light lamp bead group, the cyan light lamp bead group and the lemon light lamp bead group can adopt blue light to excite corresponding color fluorescent powder to emit light, and the blue light lamp beads can comprise multiple different wavelengths which are sequentially increased, so most blue light chips can be shared.

Further, green light lamp pearl group includes green light lamp pearl 12 of a plurality of, and it includes: the green light emitting chip emits light with spectral distribution range of 515-535 nm, dominant wavelength of 530nm and peak wavelength of 522.5nm.

Specifically, a plurality of green light emitting chips with different wavelength peak values are packaged on the substrate 2, the number of the green light emitting chips can be two, three or other numbers, and the pins of the green light emitting chips are respectively connected with the positive electrode and the negative electrode of the direct current driving power supply. When the LED is powered on, the green light emitting chip emits green light to obtain light with a spectrum distribution range of 515-535 nm, wherein the light mainly protrudes in a green light wave band. In the embodiment, the green light emitting chip is electrically driven to emit light, so that the color purity of emitted green monochromatic light is high, and the green light emitting chip can provide a narrow-peak spectrum to increase the color gamut and provide the color saturation of a color light mode.

In some embodiments, the red light bead group comprises a plurality of red light beads 14, the red light beads 14 emit light with a spectral band ranging from 570nm to 780nm, the dominant wavelength can be 621nm, and the peak wavelength can be 653nm. The red light bead 14 excites the red light emitted by the red light fluorescent powder through the red light emitting chip, or the spectral distribution range of the red light directly emitted by the red light emitting chip is 570 nm-780 nm.

Specifically, a plurality of red light emitting chips with different wavelength peak values are packaged on the substrate 2, the number of the red light emitting chips can be two or three or other numbers, red fluorescent powder with various light peak value wavelengths can be coated outside the red light emitting chips, and the red light emitting chips are driven to emit light by the red light emitting chips and then emit light. Of course, the red light emitting chip may be directly driven by the red light emitting chip to emit light without being coated with red phosphor having various light peak wavelengths. Thus, for example, the peak wavelengths of the light emitted by each red light bead 14 are different, so that a relatively wide continuous spectrum distribution range of infrared light and red light can be obtained. The pins of the red light emitting chips are respectively connected to the positive electrode and the negative electrode of the dc driving power supply, in the present application, the multiple red light emitting chips may be respectively provided with independent positive and negative electrodes, and each red light emitting chip may independently operate, or a mode in which the multiple red light emitting chips share the positive and negative electrodes may be adopted, which is not limited in the present application. When the infrared temperature measuring device is powered on, the red light emitting chip directly emits light rays in red light wave bands or emits light rays in red light wave bands by exciting red light emitting fluorescent powder, the spectral distribution range of the infrared temperature measuring device is 570 nm-780 nm, and the infrared temperature measuring device is suitable for simulating infrared light to provide light rays required by infrared night vision, infrared detection or infrared temperature measuring scenes and has higher practicability.

In some embodiments, the set of lemon light beads comprises a plurality of lemon light beads 13, which comprise: the blue light or purple light emitting chip is used for exciting the lemon light emitted by the lemon fluorescent powder, the spectral distribution range of the lemon light emitted by the blue light or purple light emitting chip is 480 nm-710 nm, the dominant wavelength can be 567nm, and the peak wavelength can be 545nm.

Specifically, a plurality of blue or purple light emitting chips with different wavelength peak values are packaged on the substrate 2, the number of the blue or purple light emitting chips can be two or three or other numbers, lemon-color fluorescent powder with various light peak values can be coated outside the light emitting chips, and the lemon-color fluorescent powder is excited to emit light after the blue or purple light emitting chips are driven to emit light by electricity. Thus, for example, the peak wavelengths of the light emitted by each lemon light bead 13 are different, so that the lemon light, yellow light, amber light and orange light can have a relatively wide continuous spectrum distribution range. The pins of the blue-violet light emitting chips are respectively connected with the positive electrode and the negative electrode of the direct current driving power supply, in the present application, the plurality of blue-violet light emitting chips may be respectively provided with independent positive and negative electrode pins, each blue-violet light emitting chip may independently operate, and certainly, a manner in which the plurality of blue-violet light emitting chips share the positive and negative electrode pins may also be adopted, which is not limited herein. When the LED is powered on, the blue-violet light emitting chip emits blue light or violet light, and simultaneously the blue light or the violet light excites the lemon fluorescent powder to emit corresponding lemon light, yellow light, amber light and orange light, wherein the spectral distribution range of the LED is 480 nm-710 nm.

Further, the cyan light lamp bead set may include a plurality of cyan light lamp beads 11, which include: the blue light or purple light emitting chip excites the cyan fluorescent powder to emit cyan light, the spectral distribution range of the cyan light is 450 nm-650 nm, the dominant wavelength can be 502nm, and the peak wavelength can be 485nm.

Specifically, the blue or violet light emitting chip can be coated with cyan phosphor with various light peak wavelengths, and the cyan phosphor is excited to emit light after the blue or violet light emitting chip is electrically driven to emit light. Thus, for example, the peak wavelength of the light emitted by each cyan light bead 11 can be different, so that the obtained cyan light has a relatively wide continuous spectral distribution range. When the LED is electrified, the blue-violet light emitting chip emits blue light or violet light, and simultaneously the blue light or the violet light excites the cyan fluorescent powder to emit corresponding cyan light, wherein the spectral distribution range of the blue-violet light emitting chip is 450 nm-650 nm.

In some embodiments, the amber light bead set may include a plurality of amber light beads 15 including: the blue-violet light emitting chip is characterized in that the spectral distribution range of amber light emitted by the blue or violet light emitting chip through excitation of the amber fluorescent powder is 510 nm-780 nm, the dominant wavelength can be 592nm, and the peak wavelength can be 606nm.

Specifically, the exterior of the blue or violet light emitting chip can be coated with amber phosphor with various light peak wavelengths, and the amber phosphor is excited to emit light after the blue-violet light emitting chip is electrically driven to emit light. Thus, for example, the peak wavelengths of the light emitted by each amber light bead 15 are different, so that amber light, yellow light, red light and orange light with a relatively wide continuous spectral distribution range can be obtained. When the LED lamp is powered on, the blue-violet light emitting chip emits blue light or violet light, the blue light or the violet light excites the amber fluorescent powder to emit corresponding amber light, yellow light, red light and orange light, the spectral distribution range of the LED lamp is 510 nm-780 nm, and the LED lamp is suitable for simulating warm yellow light to provide light required by a night lighting scene and has higher practicability.

Because the light-emitting spectrum width of the light-emitting chip is small, the light emitted by the LED lamp bead is relatively dazzling for naked eyes. This application arouses the phosphor powder of multiple colour through luminescent chip and gives out light, can obtain the light of wave spectrum broad for the light that LED lamp pearl sent is more level and smooth soft, and is more comfortable not dazzling to human naked eye like this.

In some embodiments, the blue light bead group may further include blue light beads 16 with a plurality of different wavelengths, for example, blue light beads 16 with three or four wavelengths may specifically include a first wavelength blue light bead, a second wavelength blue light bead, a third wavelength blue light bead, and a fourth wavelength blue light bead, and the power ratios thereof are (2-23): (2-23): 2-23). The blue light beads 16 with various wavelengths can be connected in series in the same channel to be controlled simultaneously. Certainly in other embodiments, if the number of wiring and lamp beads is not considered, the blue light lamp beads with different wavelengths can be respectively controlled by different channels, for example, a plurality of first wavelength blue lamp beads are electrically connected in series to form a first control channel, a plurality of second wavelength blue lamp beads are electrically connected in series to form a second control channel, and so on. It will be appreciated that in addition to the blue light beads, the other color beads are still of uniform wavelength, for example, the red light beads in the red light bead group 1 are of uniform wavelength, and the other color beads, such as green, amber, lemon and cyan, are all of the same wavelength to form corresponding control channels, where the control channels can be understood as being capable of independently controlling the variation of such color without being affected by other channels. As shown in fig. 3, a plurality of different blue light beads are connected in series and electrically connected to a first driving circuit, a red light bead of the same wavelength is connected in series and electrically connected to a second driving circuit, a green light bead of the same wavelength is connected in series and electrically connected to a third driving circuit, a cyan light bead of the same wavelength is connected in series and electrically connected to a fourth driving circuit, an amber light bead of the same wavelength is connected in series and electrically connected to a fifth driving circuit, a lemon light bead of the same wavelength is connected in series and electrically connected to a sixth driving circuit, the first to sixth driving circuits are electrically connected to a control unit, and the control channels can be controlled independently without mutual interference. It should be understood that fig. 3 is only an example of the electrical connection relationship between the lamp beads, and the sequence does not really represent the actual position arrangement of the lamp beads on the substrate 2.

The blue lamp bead group can be formed by combining blue light, purple light and ultraviolet lamp beads of various different wave band spectrums according to different proportions, wherein the spectrums contain 390-475nm. Blue lamp beads with various different spectrums can be connected in series to use one control channel. Wherein the wavelength of the blue lamp pearl of a plurality of different wavelengths increases progressively in proper order, for example with first wavelength blue light lamp pearl, second wavelength blue light lamp pearl, third wavelength blue light lamp pearl, four kinds of examples of fourth wavelength blue light lamp pearl, its peak wavelength can be 400nm ± 10nm, 420nm ± 10nm, 440nm ± 10nm, 460nm ± 15nm respectively, its power ratio can be 1. By arranging the four blue light beads with different wavelengths and combining with other beads with different colors for light mixing, the overlapping degree of the spectrum of the combined light in the range of 380-475nm and the solar spectrum can be higher, and it can be understood that if only two or one blue light is mixed, a peak or discontinuous spectrum appears in the 380-475nm section, so that the SSI fitting degree is reduced, for example, the fitting degree which cannot reach the SSI reaches 90 or more.

Optionally, the blue bead may include 3 different wavelengths of blue light, for example, 420nm ± 10nm, 440nm ± 10nm, 460nm ± 15nm, specifically, 420nm, 440nm, 460nm, and the power ratio thereof is 1:1:1 or other ratio, but the same chip size, the power meter may be a chip-to-chip ratio, which is ultimately reflected in the similarity of the solar spectrum. As shown in fig. 3, the lamp beads of each color can be independently driven by 5 channels or more than 5 channels.

In other embodiments, the red light bead may include a plurality of different wavelengths, for example, 2 red light beads 14, which respectively include two spectral bands of 630nm ± 10nm and 660nm ± 10nm, and the ratio of the power ratio is 1.

Specifically, the color of the light emitted by the LED lamp can be formed by combining red light and infrared light beads of various different wave band spectrums according to different power ratios, wherein the spectrums comprise one or more of 570-780 nm. The lamp beads with various different spectrums are connected in series or in parallel, and one control channel is used. For example, the dominant wavelength is 621nm, and the peak wavelength is 653nm, and the phosphor is excited by red light or purple light to obtain cyan light. It can be understood that in this application, blue light lamp pearl includes the blue light lamp pearl of multiple different wavelengths, for example three or four, and red light lamp pearl includes the red light lamp pearl of multiple different wavelengths, for example two, and other in addition to blue light and red light lamp pearl, for example in green light lamp pearl group 1 be the green light lamp pearl that the wavelength is unanimous, and other for example amber, lemon and cyan correspond all to same wavelength. In some embodiments, referring to fig. 3, the plurality of different blue light beads are connected in series and electrically connected to the first driving circuit, the plurality of different red light beads are connected in series and electrically connected to the second driving circuit, the green light beads of the same wavelength are connected in series and electrically connected to the third driving circuit, the cyan light beads of the same wavelength are connected in series and electrically connected to the fourth driving circuit, the amber light beads of the same wavelength are connected in series and electrically connected to the fifth driving circuit, the lemon light beads of the same wavelength are connected in series and electrically connected to the sixth driving circuit, and the first to the sixth driving circuits are electrically connected to the control unit.

In some embodiments, the substrate 2 is provided with a thermal sensor and the thermal sensor is close to the lamp bead. The distance between the heat sensor and the lamp bead is less than 1mm. Of course, also can set up a plurality of thermal sensor, and a plurality of thermal sensor respectively surround the peripheral setting of a plurality of lamp pearls. The heat sensor comprises any one or more of a thermistor, a thermocouple or a linear sensor, and the brightness and the color of the lamp beads dynamically change along with the temperature change because the lamp beads have different temperature responses. Generally speaking, the correlation between the change of red light in the lamp bead and the temperature change is the highest, and especially at high temperature, red light has larger light power loss and larger color cast than blue light and green light, so the color of the lamp bead changes at high temperature. Utilize heat sensor to carry out the temperature measurement in this application in order to improve the luminous current that temperature feedback adjusted the lamp pearl to keep lighting apparatus to keep stable luminous state.

In some embodiments, the plurality of beads are disposed on the substrate 2 in a first direction (e.g., a transverse direction) and a second direction (e.g., a longitudinal direction) of the substrate 2 at predetermined intervals. Wherein, the interval of arranging along base plate 2 first direction of lamp pearl is less than the interval of lamp pearl along 2 second directions of base plate to the example of fig. 2, the interval between the adjacent lamp pearl of transversely arranging along base plate 2 is less than the interval between the adjacent lamp pearl of vertically arranging along base plate 2. Thereby reserve the second direction and lay wire for the lamp pearl under guaranteeing to mix light and lamp pearl density condition. In some embodiments, the spacing between adjacent beads along a first direction (e.g., lateral in fig. 2) of the substrate 2 may be 0.1-0.5mm, such as 0.1mm, 0.2mm, 0.3mm, 0.5mm, and so on; the adjacent substrates 2 are spaced apart by 0.6-2mm, e.g., 0.6mm, 1mm, 1.5mm, 2mm, etc., in a second direction (e.g., the longitudinal direction in fig. 2).

In some embodiments, the lamp pearl of different colours arranges the device with the mode of symmetry on base plate 2 in this application, and red light lamp pearl, blue light lamp pearl, green light lamp pearl, amber lamp pearl, lemon color lamp pearl and cyan lamp pearl set up on base plate 2 with central symmetry respectively, wherein, along 2 first directions (transversely) of base plate, the lamp pearl kind of different colours is no more than four in every row of lamp pearl, for example can be four kinds or below to can be convenient for the wiring. Here, the color of not more than 4 is understood to mean different kinds of colors, for example, two colors of blue and red, and 2 colors of first blue light, second blue light and green light. Of course, the different color types of each row of lamp beads can be more than or equal to 2, wherein the colors of the lamp beads between two adjacent rows are different. Optionally, the lamp bead array may be substantially circular or regular polygon, taking a circle as an example, and the number of the lamp beads in each row increases gradually and then decreases gradually from top to bottom (i.e., the second direction of the substrate 2). Wherein, the row lamp pearl that contains lamp pearl quantity the most that is located the center, different colour row arrange in turn, for example, from last to contain lamp pearl quantity the most in the 5 th-9 th row, 5 th row to 9 th row lamp pearl arrange different row colour lamp pearl respectively in turn, wherein, when the lamp pearl line number is the odd number, two lines of lamp pearls can use middle row lamp pearl to form axial symmetry as the symmetry axis from top to bottom, for example in fig. 2, 7 th row lamp pearl is the symmetry axis, 5 th row lamp pearl and 9 th row lamp pearl are 7 th row symmetry settings relatively, 6 th row lamp pearl and 8 th row lamp pearl are 7 th row symmetry settings relatively. It can be understood that when the rows of the lamp beads are even, the rows of the lamp beads are not taken as the symmetry axis, and the gaps between the rows of the lamp beads are taken as the symmetry axis. The lamp beads are symmetrically arranged, so that uniform light mixing is facilitated, and the lamp beads are convenient to design, such as equal-proportion amplification or deletion.

In some embodiments, red light lamp pearl, blue light lamp pearl, green light lamp pearl, amber lamp pearl can be simultaneously that the axial symmetry also can be central symmetry arranges. Wherein, along 2 first directions of base plate and second directions, blue light lamp pearl and green light lamp pearl are not adjacent setting all the time, and it has one or more other colour lamp pearls to fill between blue light lamp pearl and the green light lamp pearl promptly. Wherein, blue light lamp pearl and green light lamp pearl can be concentric circles or polygon week (for example four sides, pentagon and above and so on) arrange in turn, and blue light lamp pearl and green light lamp pearl can not be located whole lamp pearl array on the outer periphery, and will be red light lamp pearl, amber lamp pearl, lemon color lamp pearl and cyan lamp pearl set up whole lamp pearl array on the outer periphery. Wherein, the homogeneity of mixing light can be improved to the arranging of above-mentioned six-color lamp pearls, improves optics utilization ratio, reduces the cost of later stage optical treatment. In addition, the lamp beads with different colors are arranged on the substrate 2 at intervals, and when the white light is adjusted, the light ray assembly can emit uniform mixed light.

In some embodiments, the blue light lamp bead includes a first wavelength blue light lamp bead, a second wavelength blue light lamp bead, a third wavelength blue light lamp bead, a fourth wavelength blue light lamp bead, and the number ratio can be 1:1:2:1, wherein first wavelength blue light lamp pearl, second wavelength blue light lamp pearl, third wavelength blue light lamp pearl, fourth wavelength blue light lamp pearl symmetry and interval setting respectively. Along the first direction of the substrate 2, the distance between two adjacent blue lights with the same wavelength in the same row is 1 or more (e.g., 2, 3, 4 or more) lamp beads, at least 1 other color may be provided between two adjacent blue lights with the same wavelength, but not more than 4 colors, for example, 2 red lights, or 2 green lights plus 4 red lights, etc. are provided between two adjacent blue light lamp beads with the first wavelength. Red light lamp bead, lemon light lamp bead, cyan light lamp bead and amber light lamp bead are filled between the concentric circles or the polygon circumference.

Optionally, for example, the distance between the concentric circles or the polygon circumferences of the blue light lamp beads may be equal to the distance from the innermost concentric circle or the polygon circumference of the blue light lamp beads to the center, for example, the distance may be 2 to 3 lamp beads, that is, it is ensured that the interval between the blue light lamp beads of the concentric circles remains the same, it is ensured that the interval between the green light lamp beads of the concentric circles remains the same, the uniformity of arrangement of blue light and green light among red light, amber light, cyan light, and lemon light lamp beads is improved, and the risk of local occurrence of blue or green stripes caused by uneven light mixing is reduced. Specifically, the pin of the lamp pearl of same colour and adjacent passes through lead wire series connection each other or parallel connection, and during the lamp pearl wiring in this application, the quantity of the lamp pearl of different colours is no longer than or is not more than (be less than or equal to) four kinds in each lamp pearl row, can reduce the wire winding degree of difficulty of lamp pearl on the base plate 2 like this to can reduce the distance between the lamp pearl, reduce light emitting area diameter, improve luminous power density.

As shown in fig. 3, the lighting device provided in the embodiment of the present application may further include a control unit, a driving circuit, and the substrate and the lamp beads described in the above embodiments; the control unit is connected with the drive circuit to input a regulation and control instruction to the drive circuit; and the driving circuit is connected with the lamp beads to receive the regulating and controlling instruction and then adjust the current of the lamp beads with the same color in the lighting equipment so as to emit light rays with different spectral wave bands.

As shown in fig. 4-5, fig. 4 is in a simulation of 3200K, fig. 5 is in a simulation of 5600K, the solid line is the mixed light spectrum curve of the present application, and the dotted line is the standard solar spectrum curve, as can be seen from the graph, the degree of overlap between the spectrum of the present application and the solar spectrum is quite high, i.e. SSI is greater than 90, and no peak or discontinuous spectrum appears in the spectrum in the range of 380-475nm, which not only can improve the light color gamut, make the colors richer, the color variety is many, the monochromatic color purity is high, but also the continuity of the dimming white spectrum is good, and the color evaluation indexes such as RA, SSI, TLCI are high.

The lighting device of the embodiment of the application can be applied to the fields of, but not limited to, movie and television lighting, stage lighting, commercial lighting and the like. For example, when orange light is required, a button with a corresponding color is pressed on the device body, or a code corresponding to orange is input, the control unit outputs a corresponding regulation and control instruction after receiving a corresponding instruction for emitting the orange light, then the control unit outputs current control signals for controlling the luminous intensity of the lamp beads with six colors according to a set algorithm according to the regulation and control instruction and sends the current control signals to the driving circuit, and the driving circuit adjusts (including lowering or raising) the current of the lamp beads with different colors in the light assembly. For example, increase the electric current size of lemon light lamp pearl 13, amber light lamp pearl 15 and red light lamp pearl 14 in order to promote the luminous luminance that corresponds the LED lamp pearl, reduce the electric current size of blue light lamp pearl 16, green light lamp pearl 12 in order to reduce the luminous luminance that corresponds the LED lamp pearl, the electric current size that keeps cyan light lamp pearl 11 is unchangeable in order to maintain its luminous luminance unchangeably, just can form required orange light after multiple colour light mixes like this.

The application provides an LED mixed spectrum white light source independently controlled by 5 paths or more than 5 paths, which can realize the dimming of 1800K-20000K of white light, and can ensure that the spectrum similarity SSI is more than 90 in the dimming range of 1800K-8200 and more than 86 in the dimming range of 8200K-20000K. Ra is higher than 96 in 1800-20000K range, TLCI index is higher than 98 in 2500-20000K range, and simultaneously, the output of small luminous surface and high optical density can be realized.

The above detailed descriptions are given to a dimming module and a lighting device provided by the embodiments of the present invention, and the detailed examples are applied herein to explain the principles and embodiments of the present invention, and the descriptions of the above embodiments are only used to help understand the technical solution and the core idea of the present invention, and are not used to limit the protection scope of the present invention; those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present invention in its various embodiments. The scope of the present invention shall be defined by the appended claims.

Claims (11)

1. An illumination device, comprising:

a substrate; and the number of the first and second groups,

the lamp beads with different colors are arranged on the substrate at intervals;

a plurality of different colours's lamp pearl includes blue light lamp pearl, green light lamp pearl, red light lamp pearl, lemon light lamp pearl, cyan light lamp pearl and amber light lamp pearl are arranged in order to form the lamp pearl array along first direction and second direction respectively, lamp pearl array is on the outer side including red light lamp pearl, lemon light lamp pearl, cyan light lamp pearl and amber light lamp pearl, green light lamp pearl is not located lamp pearl array on the outer side.

2. The lighting device as defined in claim 1, wherein the blue light bead, the green light bead, the red light bead, the lemon light bead, the cyan light bead and the amber light bead are arranged in central symmetry.

3. The lighting device as claimed in claim 2, wherein the blue light beads and the green light beads are arranged in concentric circles or polygonal circles at intervals, the concentric circles or polygonal circles of the blue light beads and the concentric circles or polygonal circles of the green light beads alternate with each other, and the red light beads, the lemon light beads, the cyan light beads and the amber light beads are filled between the concentric circles or polygonal circles.

4. The lighting device as recited in claim 3, wherein a distance between two adjacent concentric circles or polygons of the blue light beads is equal to a distance from an innermost concentric circle or polygon of the blue light beads to a center, and the distance is 2-3 beads.

5. The lighting device according to claim 1, wherein the red light beads, the blue light beads, the green light beads, the amber light beads, the cyan light beads and the lemon light beads are arranged along the first direction and the second direction of the substrate, respectively, and the arrangement intervals of the beads along the first direction are smaller than those of the beads along the second direction.

6. The illumination device as recited in claim 5, wherein adjacent beads are spaced 0.1-0.5mm apart in a first direction of the substrate and 0.6-2mm apart in a second direction of the substrate.

7. The lighting device as defined in claim 1, wherein along the first direction and the second direction of the substrate, any one or 2 kinds of the red light bead, the lemon light bead, the cyan light bead and the amber light bead are disposed between the adjacent blue light beads and green light beads, and along the first direction, the kinds of beads with different colors in the beads are not more than four.

8. The lighting device as defined in claim 1, wherein the blue light bead set comprises a first wavelength blue light bead, a second wavelength blue light bead, a third wavelength blue light bead, and a fourth wavelength blue light bead, which have different wavelengths, and the number ratio is 1.

9. The lighting device according to claim 1, wherein the red light bead group comprises a first wavelength red light bead and a second wavelength red light bead, the number ratio of the first wavelength red light bead to the second wavelength red light bead is 1.

10. The lighting device according to claim 1, wherein any one or 2 of green light beads, red light beads, lemon light beads, cyan light beads and amber light beads are filled between two adjacent blue light beads in each row, and any one or 2 of blue light beads, red light beads, lemon light beads, cyan light beads and amber light beads are filled between two adjacent green light beads in each row.

11. The lighting apparatus according to claim 1, wherein the green light beads occupy a minimum proportion of the bead array, and the blue light beads are not located at an outermost periphery of the bead array; the quantity ratio of blue light lamp pearl, green light lamp pearl, red light lamp pearl, green light lamp pearl and amber light lamp pearl is 9.

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