CN215061369U

CN215061369U - Multi-color light source

Info

Publication number: CN215061369U
Application number: CN202121293690.6U
Authority: CN
Inventors: 夏正浩; 李炳乾; 罗明浩; 林威
Original assignee: Greatshine Semiconductor Technology Co ltd
Current assignee: Greatshine Semiconductor Technology Co ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2021-12-07
Anticipated expiration: 2031-06-09

Abstract

The utility model discloses a polychrome light source, which comprises a substrate, the first LED lamp pearl of a plurality of and a plurality of second LED lamp pearl, first LED lamp pearl is including setting up the first LED chip on the base plate and covering the first fluorescent glue on first LED chip, first LED chip part or whole side are provided with the exposed portion that is not covered by first fluorescent glue, a plurality of second LED lamp pearl sets up on the base plate, first LED lamp pearl is different with the luminous colour of second LED lamp pearl, because the part of first LED lamp pearl or whole side are not covered by first fluorescent glue, the light that sends from second LED lamp pearl is difficult for passing through first fluorescent glue, consequently, be difficult for forming the facula of other colours, improve luminous effect.

Description

Multi-color light source

Technical Field

The utility model relates to a light source technical field, in particular to polychrome light source.

Background

The existing light source can be provided with at least two LED lamp beads on a lamp panel in order to meet the requirements of users, thereby controlling the operation of different LED lamp beads to emit light with at least two different colors, but the LED lamp beads generally comprise LED chips and fluorescent glue covering the LED chips, the LED lamp beads emitting different colors can be adjacently arranged, light emitted from the side surface of one LED lamp bead can penetrate the fluorescent glue of the other LED lamp bead, light spots which can be emitted by the LED lamp beads but not one LED lamp bead can be caused, and the light emitting effect of the light source is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a polychrome light source improves luminous effect.

According to a first aspect embodiment of the present invention, a multicolor light source comprises: a substrate; the first LED lamp beads comprise first LED chips arranged on the substrate and first fluorescent glue covering the first LED chips, and exposed parts which are not covered by the first fluorescent glue are arranged on partial or all side surfaces of the first LED chips; the second LED lamp beads are arranged on the substrate, and the light emitting colors of the first LED lamp beads are different from those of the second LED lamp beads.

According to the utility model discloses polychrome light source has following beneficial effect at least:

the utility model discloses polychrome light source can control first LED lamp pearl and second LED lamp pearl and light up luminous respectively to form the luminous colour of two kinds of differences, when second LED lamp pearl was luminous, because the part or whole sides of first LED lamp pearl are not covered by first fluorescent glue, the light that sends from second LED lamp pearl is difficult for passing through first fluorescent glue, consequently is difficult for forming the facula of other colours, improves luminous effect.

According to some embodiments of the utility model, still include the second fluorescent glue, second LED lamp pearl including set up in second LED chip on the base plate, the second fluorescent glue cover in second LED chip and on the first LED lamp pearl.

According to some embodiments of the invention, the first LED chip and the second LED chip have the same emission color.

According to the utility model discloses a some embodiments, first LED chip with second LED chip is blue light LED chip, first fluorescent glue is warm white glue, second fluorescent glue is just white glue.

According to some embodiments of the present invention, the thickness of the first fluorescent glue on the upper surface of the first LED chip is in the range of 100-.

According to some embodiments of the utility model, first LED lamp pearl has a plurality ofly, part first LED lamp pearl is arranged and is formed first annular region, and remaining first LED lamp pearl sets up on the middle part region that first annular region centers on, be located on the middle part region the side of the first LED chip of first LED lamp pearl is not all by first fluorescent glue covers.

According to the utility model discloses a some embodiments, arrange and form first annular region in the first LED lamp pearl, the exposed part sets up be close to on the first LED chip on the regional side in middle part.

According to some embodiments of the utility model, first LED lamp pearl with second LED lamp pearl all has a plurality ofly and crisscross setting.

According to some embodiments of the present invention, the first LED lamp bead is plural and connected in series to at least one first LED lamp string, the second LED lamp bead is plural and connected in series to at least one second LED lamp string, and the first LED lamp string and the second LED lamp string are connected in reverse parallel.

According to the utility model discloses a some embodiments still include drive module, drive module respectively with first LED lamp cluster with second LED lamp cluster is connected with output duty cycle signal control first LED lamp cluster with second LED lamp cluster is bright in turn and is gone out, alternate frequency is greater than 1 KHz.

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

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a front view of one embodiment of a multicolor light source of the present invention;

FIG. 2 is a schematic cross-sectional view of one embodiment of a multicolor light source of the present invention;

fig. 3 is a schematic circuit diagram of one embodiment of the multicolor light source of the present invention.

Reference numerals:

the LED lamp comprises a substrate 100, a first LED lamp bead 200, a first LED chip 210, an exposed part 211, a first fluorescent glue 220, a second LED lamp bead 300, a second LED chip 310, a second fluorescent glue 400, a first annular area 500, a middle area 600, a first LED lamp string 700, a second LED lamp string 800 and a driving module 900.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the orientation description, such as the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., is the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplicity of description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-3, according to the utility model discloses a polychrome light source of first aspect embodiment, including base plate 100, the first LED lamp pearl 200 of a plurality of and a plurality of second LED lamp pearl 300, first LED lamp pearl 200 is including setting up the first LED chip 210 on base plate 100 and covering the first fluorescent glue 220 on first LED chip 210, and first LED chip 210 part or whole side is provided with the exposed portion 211 that is not covered by first fluorescent glue 220, and a plurality of second LED lamp pearl 300 sets up on base plate 100, and first LED lamp pearl 200 is different with the luminous colour of second LED lamp pearl 300.

Wherein, base plate 100 can be aluminium base board 100, also can be other circuit boards for realize the electric connection of a plurality of first LED lamp pearl 200 and a plurality of second LED lamp pearl 300, the light source of this design can be the COB light source.

The utility model discloses an in some embodiments, first LED lamp pearl 200 and second LED lamp pearl 300 all have a plurality ofly and crisscross the setting, perhaps first LED lamp pearl 200 and second LED lamp pearl 300 all have a plurality ofly and mix the setting to no matter first LED lamp pearl 200 lights, still second LED lamp pearl 300 lights, perhaps first LED lamp pearl 200 and second LED lamp pearl 300 lights in turn in order to mix the light, all can make the whole luminous even of light source.

The utility model discloses polychrome light source can control first LED lamp pearl 200 and second LED lamp pearl 300 and light respectively and give off light to form the luminous colour of two kinds of differences, when second LED lamp pearl 300 is luminous, because the part or whole sides of first LED lamp pearl 200 are not covered by first fluorescent glue 220, the light of sending out from second LED lamp pearl 300 is difficult for passing through first fluorescent glue 220, consequently is difficult for forming the facula of other colours, improves luminous effect.

The utility model discloses an in some embodiments, still include second fluorescent glue 400, second LED lamp pearl 300 is including setting up the second LED chip 310 on base plate 100, second fluorescent glue 400 covers on second LED chip 310 and first LED lamp pearl 200, the light that second LED chip 310 sent sends the light of its colour after second fluorescent glue 400, the light that first LED chip 210 sent sends the light of another colour after first fluorescent glue 220 and second fluorescent glue 400 in proper order.

In some embodiments of the present invention, the second LED lamp bead 300 includes the second LED chip 310 disposed on the substrate 100 and the second fluorescent glue 400 covering the second LED chip 310, and similarly, part or all of the side surface of the second LED chip 310 is not covered by the second fluorescent glue 400, so as to prevent the light emitted from the side surface of the first LED chip 210 from irradiating the second fluorescent glue 400 to excite different colors, and in addition, the first LED lamp bead 200 and the second LED lamp bead 300 are covered by one layer of packaging glue to prevent the device from being exposed and damaged.

The utility model discloses an in some embodiments, still include second fluorescent glue 400, second LED lamp pearl 300 is including setting up second LED chip 310 on base plate 100, and second fluorescent glue 400 covers in the embodiment on second LED chip 310 and first LED lamp pearl 200, and first LED chip 210 and second LED chip 310 can adopt the same LED chip, and both's luminous colour is the same.

Specifically, the first LED chip 210 and the second LED chip 310 are both blue LED chips, the first fluorescent glue 220 is warm white glue, the second fluorescent glue 400 is positive white glue, and the thickness range of the first fluorescent glue 220 on the upper surface of the first LED chip 210 is between 100 and 300um, so that the blue light emitted by the first LED chip 210 can be excited to generate warm white light after being processed by the first fluorescent glue 220, and the blue light emitted by the second LED chip 310 is not easily irradiated on the first fluorescent glue 220 on the upper surface of the first LED chip 210.

In some embodiments of the present invention, as shown in fig. 1 and 2, the first LED lamp beads 200 are multiple, a part of the first LED lamp beads 200 are arranged to form a first annular region 500, the remaining first LED lamp beads 200 are disposed on a middle region 600 surrounded by the first annular region 500, and the side of the first LED chip 210 of the first LED lamp beads 200 located on the middle region 600 is not covered by the first fluorescent glue 220.

It should be noted that, part of the first LED lamp beads 200 forming the first annular region 500 are generally the outermost ones of all the first LED lamp beads 200, and since the light emitted by the first LED chip 210 needs to be processed by the first fluorescent glue 220 and then emitted, the light with the corresponding color can be emitted, and if the side light emitted by the first LED chip 210 at the periphery is not processed by the first fluorescent glue 220, the light at the periphery of the whole light source and the light at the middle have a color difference, which affects the light emitting effect.

Specifically, since the light emitted from the side of the first LED chip 210 close to the middle region 600 can be mixed with the light emitted from the first LED chip 210 located in the middle region 600, so as to reduce the color difference, while the light emitted from the side of the first LED chip 210 opposite to the middle region 600 is directly emitted or emitted after passing through the second fluorescent glue 400, the color difference is easily generated, as shown in fig. 2, in the first LED beads 200 arranged to form the first annular region 500, the exposed portion 211 is disposed on the side of the first LED chip 210 close to the middle region 600.

It should be noted that, the first LED lamp beads 200 and the second LED lamp beads 300 are arranged in a staggered manner, a part of the second LED lamp beads 300 are located in the middle region 600, the rest of the second LED lamp beads 300 are located at the periphery of the first annular region 500, and the number of the second LED lamp beads 300 located at the periphery of the first annular region 500 is only a small number, so that even if the first LED lamp beads 200 arranged to form the first annular region 500 are arranged, the exposed portions 211 are arranged on the side surfaces of the first LED chips 210 close to the middle region 600, the second LED lamp beads 300 may irradiate the first fluorescent glues 220 on the side surfaces of the first LED chips 210 close to the exposed portions, and the influence is not great, thereby meeting the use requirements.

In some embodiments of the present invention, as shown in fig. 3, the first LED lamp beads 200 are plural and connected in series to form at least one first LED lamp string 700, the second LED lamp beads 300 are plural and connected in series to form at least one second LED lamp string 800, and the first LED lamp string 700 and the second LED lamp string 800 are connected in reverse parallel.

Specifically, the first LED lamp string 200 can emit warm white light, the first LED lamp string 700 forms a warm white light path, the second LED lamp string 300 can emit normal white light, the second LED lamp string 800 forms a normal white light path, when the positive and negative electrodes of the normal white light path add a forward driving voltage, the normal white light path emits light and the warm white light path is reversely cut off and does not emit light, otherwise when the positive and negative electrodes of the normal white light path add a reverse driving voltage, the warm white light path emits light and the LEDs of the normal white light path are reversely cut off and do not emit light, thereby realizing simple light source dimming in one light source, and only two electrodes are needed to access an external power supply, the light path design is simple, and the installation is convenient.

Further, in order to realize the universal use of the light source, the number of the LED chips connected in series in the first LED lamp string 700 or the second LED lamp string 800 may be 8, and each LED is about 3V, so that the LED light source is suitable for a universal power supply circuit with a voltage of 24V, and has strong applicability and good safety.

In some embodiments of the present invention, the LED lighting device further includes a driving module 900, and the driving module 900 is respectively connected to the first LED lamp string 700 and the second LED lamp string 800 to output a duty ratio signal to control the first LED lamp string 700 and the second LED lamp string 800 to turn on and off alternately.

Specifically, the driving module 900 may adopt a high-frequency current output power supply, a voltage driving manner of high-frequency forward and reverse current output switching is performed, forward driving of a forward white light path is taken as a driving power supply forward direction for example, when 100us forward driving is adopted, 100us reverse driving is performed for continuous switching, the forward white light and the warm white light have the same components, and can emit white light with color temperature between full forward white and full warm white, so that the duty ratio of forward driving and reverse driving is adjusted, thereby adjusting the composition of the forward white and the warm white of the output light source, and further realizing full-range adjustment of the light color temperature from the forward white to the warm white. In order to improve the display characteristics of the light source, the driving adopts high-frequency switching with the frequency exceeding 1 KHz. Because the ultrahigh frequency switching can be realized by adjusting the frequency of the power supply, the problem of stroboflash does not exist, and the duty ratio adjustment can be continuously changed, thereby realizing the continuous adjustment of light color and improving the dimming comfort.

Further, the brightness of the emitted light can be adjusted by adjusting the driving current through the driving power supply of the direct-current power supply.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A multicolor light source, comprising:

a substrate;

the LED lamp comprises a plurality of first LED lamp beads, a plurality of second LED lamp beads and a plurality of LED lamp beads, wherein the first LED lamp beads are arranged on a substrate, and first fluorescent glue covers the first LED chips;

the second LED lamp beads are arranged on the substrate, and the light emitting colors of the first LED lamp beads are different from those of the second LED lamp beads.

2. A multicolor light source according to claim 1, wherein: the LED lamp comprises a substrate, and is characterized by further comprising second fluorescent glue, wherein the second LED lamp beads comprise second LED chips arranged on the substrate, and the second fluorescent glue covers the second LED chips and the first LED lamp beads.

3. A multicolor light source according to claim 2, wherein: the first LED chip and the second LED chip have the same light emitting color.

4. A multicolor light source according to claim 2, wherein: the first LED chip and the second LED chip are blue LED chips, the first fluorescent glue is warm white glue, and the second fluorescent glue is positive white glue.

5. A multicolor light source according to claim 4, wherein: the thickness range of the first fluorescent glue positioned on the upper surface of the first LED chip is between 100 and 300 mu m.

6. A multicolor light source according to claim 2, wherein: the LED lamp comprises a plurality of first LED lamp beads, wherein part of the first LED lamp beads are arranged to form a first annular region, the rest first LED lamp beads are arranged on a middle region surrounded by the first annular region, and the side faces of first LED chips of the first LED lamp beads on the middle region are not covered by first fluorescent glue.

7. A multicolor light source according to claim 6, wherein: in the first LED lamp beads arranged to form the first annular region, the exposed part is arranged on the side surface of the first LED chip close to the middle region.

8. A multicolor light source according to claim 1, wherein: the first LED lamp beads and the second LED lamp beads are multiple and arranged in a staggered mode.

9. A multicolor light source according to claim 1, wherein: the first LED lamp beads are multiple and connected in series to form at least one first LED lamp string, the second LED lamp beads are multiple and connected in series to form at least one second LED lamp string, and the first LED lamp string and the second LED lamp string are connected in parallel in an opposite direction.

10. A multicolor light source according to claim 9, wherein: the LED lamp further comprises a driving module, wherein the driving module is respectively connected with the first LED lamp string and the second LED lamp string to output duty ratio signals to control the first LED lamp string and the second LED lamp string to be alternately turned on and off, and the alternating frequency is greater than 1 KHz.