CN209880610U - LED color lamp strip and lamp - Google Patents

Abstract

The utility model provides a colored lamp strip of LED and lamps and lanterns, this colored lamp strip of LED includes: the flexible substrate, set up and be in at least a conducting wire on the flexible substrate and the LED flip chip that corresponds the way number, a plurality of LED flip chip in every way pass through tin cream with conducting wire electric connection, the flexible substrate is provided with transparent protection and glues, the protection is glued along the conducting wire covers in succession the LED flip chip. The technical scheme of the utility model removes the packaging process of the LED lamp bead, reduces the process flow, saves the materials and shortens the working hours compared with the prior LED color lamp strip; and the transparent protective glue is directly covered on the surface of the flexible substrate along the corresponding conductive circuit, so that each LED flip chip is subjected to reflection and refraction mixing in the protective glue, and large-angle light emission and the like can be realized on the surface of the flexible substrate.

Description

LED color lamp strip and lamp

Technical Field

The utility model relates to a LED technical field especially relates to a colored lamp strip of LED and lamps and lanterns.

Background

The LED lamp has the characteristics of energy conservation, environmental protection, long service life and the like, and in occasions requiring different color atmospheres, the switching among multiple different colors can be realized by one LED bulb or one LED lamp tube, so that the LED bulb or the LED lamp tube becomes a carrier of intelligent illumination, wherein the core part of the intelligent LED lamp is an RGB LED lamp bar capable of emitting colored light.

However, the existing LED color light bar is complicated in production process. Firstly, the RGB surface mounted lamp bead is formed by assembling RGB LED wafers, packaging glue, an LED bracket, a conductive gold wire and other materials. And the RGB paster lamp pearl needs to be made by encapsulation mill earlier to a preparation RGB LED lamp strip, then fixes RGB paster lamp pearl and other electronic component on the base plate by the illumination mill again. Therefore, the RGB LED light bar production process is divided into two parts, namely LED light bar packaging and illumination assembly, and the two parts are not communicated with each other.

On the other hand, as shown in fig. 1, the conventional RGB LED light bar needs to encapsulate the RGB LED flip chip in the bowl-cup support, and due to the shielding of the bowl-cup from light, the light emitting angle of the conventional RGB LED light bar is about 120 °, and the light emitting angle cannot reach full-angle light emitting.

In addition, because the existing RGB LED lamp bead is large in size, the distance between the lamp beads is long, and the uninterrupted continuous light-emitting effect without light spots is difficult to realize by only depending on the lamp strip. Therefore, a rubber tube is sleeved outside the conventional RGB LED lamp strip, and uninterrupted light emission is realized through reflection and refraction of the rubber tube. In addition, the existing RGB LED lamp bead is large in size, so that the lamp strip is wide and thick in size, limited in use space and bending angle and the like.

SUMMERY OF THE UTILITY MODEL

For solving above-mentioned at least one problem, the utility model provides a colored lamp strip of LED and lamps and lanterns, this colored lamp strip of LED includes: the flexible substrate, set up and be in at least a conducting wire on the flexible substrate and the LED flip chip that corresponds the way number, a plurality of LED flip chip in every way pass through tin cream with conducting wire electric connection, the flexible substrate is provided with transparent protection and glues, the protection is glued along the conducting wire covers in succession the LED flip chip.

In the above LED color light bar, optionally, the LED color light bar includes: the LED flip chip comprises three LED flip chips, wherein the first LED flip chip is a red LED flip chip, the second LED flip chip is a green LED flip chip, and the third LED flip chip is a blue LED flip chip.

In the above LED color light bar, optionally, at least two of the LED flip chips with the corresponding number of the channels have the same light emission color, and the protective glue of at least one of the LED flip chips with the same light emission color is added with fluorescent powder for adjusting color.

In the above LED color light bar, optionally, an outer surface of the protective adhesive is arc-shaped.

In the above LED color light bar, optionally, the flexible substrate is a light-permeable flexible substrate.

In the above LED color light bar, optionally, the back surface of the light-permeable flexible substrate is covered with a transparent protective adhesive whose outer surface is arc-shaped.

In the above LED color light bar, optionally, the LED flip chips in the same path are connected in series in sequence.

In the above LED color light bar, optionally, each adjacent at least two LED flip chips in the same path are taken as a group, adjacent groups are connected in series, and the LED flip chips in the same group are connected in parallel.

In the above LED color light bar, optionally, the transparent protective glue is silica gel.

The utility model also provides a lamp, lamp includes foretell LED colored light strip.

The embodiment of the utility model has the following advantage:

the technical scheme of the utility model removes the single LED lamp bead packaging process by directly packaging the LED flip chip on the substrate, reduces the technological process, saves materials and shortens the working hours compared with the prior LED color lamp strip; and the transparent protective glue is directly covered on the surface of the flexible substrate along the corresponding conductive circuit to form a protective glue layer of the LED flip chip, so that the LED flip chips are reflected and refracted in the protective glue, and the large-angle light emission can be realized on the surface of the flexible substrate. In addition, the distance between the flip chips cannot be influenced by the size of the LED support bowl cup.

In order to make the aforementioned and other objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a conventional LED color light bar;

fig. 2 is a schematic structural diagram of an LED color light bar according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view illustrating a first example of an LED color light bar according to an embodiment of the present invention;

fig. 4 is a schematic cross-sectional view of a LED color light bar according to an embodiment of the present invention;

fig. 5 shows a third schematic cross-sectional view of the LED color light bar according to the embodiment of the present invention.

Description of the main element symbols:

1-a flexible substrate; 2-conductive lines; 3-LED flip chip; 4-transparent protective glue.

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.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the templates herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Example 1

Referring to fig. 2, the present embodiment provides an LED color light bar, which can be applied to different lamps to realize color light conversion. The LED color light bar is described in detail below.

As shown in fig. 2, the LED color light bar includes a flexible substrate 1, at least one conductive circuit 2 disposed on the flexible substrate 1, and a number of LED flip chips 3 corresponding to the number of the conductive circuits, where each conductive circuit 2 corresponds to one LED flip chip 3, and each LED flip chip 3 may include at least one LED flip chip 3, and the light emitting colors of all the LED flip chips 3 in the same path are the same.

Further, a plurality of LED flip chips 3 in each path are electrically connected with corresponding conductive circuits 2 through solder paste, transparent protective glue 4 is further arranged on the flexible substrate 1, and the transparent protective glue 4 continuously covers the LED flip chips 3 along the corresponding conductive circuits 2. It is understood that the LED flip chip 3 mainly uses an LED flip chip whose light emission color is three primary colors of red, green, or blue.

As an alternative, the color of the light emitted from each LED flip chip 3 in the LED color light bar will be different. Exemplarily, the LED color light bar comprises three LED flip chips 3, wherein the first LED flip chip 3 emitting blue light, which is referred to as blue LED flip chip for short, can be used as the first LED flip chip; the second path can adopt an LED flip chip 3 emitting red light, which is called as a red LED flip chip for short; the third path may use a green LED flip chip 3, referred to as a green LED flip chip for short, emitting green light. It should be understood that the first, second and third are used to refer to the LED flip-chips 3 of different paths, and are not meant to be a definition of the color sequence of the LED flip-chips 3 of the LED color light bar, and the light emitting color of the LED flip-chip 3 of each path can be set according to actual requirements.

As another alternative, at least two LED flip chips 3 in the LED color light bar have the same light emitting color. At this time, in order to realize the color light emitting effect, fluorescent powder for adjusting the light emitting color may be added to the protective adhesive corresponding to one or more of the LED flip-chip 3 in the plurality of paths having the same light emitting color. For example, when the LED color light bar includes two LED flip chips 3 with blue light emitting colors, phosphor such as red or green may be added to the protective adhesive of one of the LED flip chips 3, so that the LED flip chip 3 emits light with other colors than blue after being powered on.

In this embodiment, the conductive trace 2 is provided with a plurality of die pads, and each two die pads are used for fixing one LED flip chip 3, that is, for soldering the positive electrode and the negative electrode of each LED flip chip 3. For each LED flip chip 3 of the same lane, for example, each LED flip chip 3 may be connected in series in sequence, i.e. the negative electrode of the previous LED flip chip 3 is connected to the positive electrode of the next LED flip chip 3, and so on.

Of course, the LED flip-chip 3 of the same path may also be connected in other manners, for example, at least two adjacent LED flip-chips 3 may be used as a group, the adjacent groups are connected in series, and the LED flip-chips 3 of the same group are connected in parallel. It is understood that the shape of each conductive line 2 and the number of LED flip chips 3 connected thereto may be laid out and wired according to actual needs, and therefore, the shape is not limited thereto. In addition, the distance between each LED flip chip 3 in the same path can also be set according to actual requirements, if the set distance between two LED flip chips 3 is smaller than a preset threshold value, continuous and uninterrupted strip-shaped luminous effect can be directly realized, and compared with the existing LED color light bar structure, a rubber tube sleeved outside the LED color light bar can be omitted, so that the process steps can be reduced, the production efficiency can be improved, the cost can be reduced, and the like.

As shown in fig. 2, a transparent protective adhesive 4 continuously covering the LED flip chip 3 along the corresponding conductive circuit 2 is further disposed on the surface of the flexible substrate 1 of the LED color light bar. It will be appreciated that the protective adhesive layer may prevent the LED flip-chip 3 from being damaged during mounting or transportation, etc. The transparent protective adhesive 4 may be transparent silicone or the like.

Further preferably, the surface of the transparent protective adhesive 4 is arc-shaped. Exemplarily, if the LED color light bar includes three LED flip chips 3, for example, the first LED flip chip is a red LED flip chip, the second LED flip chip is a green LED flip chip, and the third LED flip chip is a blue LED flip chip, all the LED flip chips can be wrapped in a covering manner as shown in fig. 3, so that a transparent protective glue layer is formed when the protective glue is cured.

Of course, if the multiple paths of LED flip chips 3 in the LED color light bar have at least two paths of LED flip chips with the same light emitting color, considering that at least one path of the multiple paths of LED flip chips 3 with the same light emitting color may need to be color-adjusted, the covering manner shown in fig. 4 may be adopted, that is, each path of LED flip chip 3 is covered along its conductive circuit 2, so that it is convenient to add different colors of fluorescent powder into the protective adhesive corresponding to the different paths of LED flip chips 3, thereby achieving the adjustment of the overall light emitting color of the path of LED flip chip 3.

For example, the color LED light bar includes three LED flip chips 3, wherein the three LED flip chips 3 all use blue LED flip chips, and in order to achieve color light emitting effect, fluorescent powders with different colors can be added to any two protective adhesives, for example, red fluorescent powder is added to the protective adhesive of the first path, and green fluorescent powder is added to the protective adhesive of the second path, so that the color LED light bar can also emit light with different colors.

It can be understood that the light emitted by the LED flip chip 3 after being powered on can be reflected and refracted by the arc-shaped protective adhesive to be mixed, so that the light refracted out of the surface of the protective layer is more uniform. In addition, the LED color lamp strip can realize the light-emitting effect of the maximum angle of 180 degrees on the surface of the flexible substrate 1 by refracting the LED color lamp strip to the outside through the arc-surface-shaped protective adhesive layer.

Compared with the existing LED colored lamp strip, the LED bracket, the bowl-cup structure and the like can be eliminated, and the luminous effect is not limited by the maximum 120-degree luminescence of the bowl-cup structure. In addition, since the LED color light bar has no structural limitations of LED brackets, bowl structures and the like, the external dimensions of the flexible substrate 1 are no longer limited. Moreover, through directly encapsulating LED flip chip 3 on flexible substrate 1, this technological process in will simplifying production process greatly to can improve the production efficiency etc. of this colored lamp strip of LED.

In the present embodiment, the flexible substrate 1 is mainly an FPC substrate, and exemplarily, the substrate may be a substrate made of a soft metal material, and specifically, an aluminum substrate, a ceramic aluminum substrate, and the like may be used. It is understood that when the flexible substrate 1 is adopted, the LED color light bar can be made to have ductility, flexibility and the like. In addition, when the substrate made of metal materials such as a ceramic aluminum substrate is adopted, the LED color lamp strip can be bent flexibly and can also play a role in automatic shaping, when a specific bending shape is needed, materials and labor for fixing the shape are saved, and the adopted substrate is made of metal, so that the heat dissipation effect is good.

In this embodiment, the solder paste mainly contains fine solder balls and flux, and can perform a good conductive function. Because this tin cream is liquid under unheated state, so when needing to insert LED flip chip 3, can place LED flip chip 3 in the pad department that corresponds, then make the tin cream solidification through the heating, and then reach the effect of fixed LED flip chip 3.

According to the technical scheme of the LED colored light bar, the LED flip chip is directly packaged on the substrate, so that an independent RGB LED lamp bead packaging process is eliminated, the process flow is reduced, materials are saved, and the working hours are shortened; still cover the protection glue film in order to form each LED flip chip through directly transparent protection glue on the surface of flexible substrate, LED flip chip accessible reflection mixes with the refraction in the protection glue like this to make the light of refracting out protection glue film surface can realize the luminous effect of maximum angle 180 degrees. In addition, the distance between each flip chip can not receive the influence of LED support bowl cup size, and then can realize intensive setting, if adjacent LED flip chip distance is close enough, then can directly realize the luminous effect of continuous strip to can save extra rubber tube of cover outside the lamp strip, reduce cost etc..

Example 2

Referring to fig. 2 and fig. 5, the present embodiment provides an LED color light bar, which is different from the LED color light bar in embodiment 1 only in that the flexible substrate 1 of the present embodiment adopts a light-permeable flexible substrate, that is, a transparent FPC substrate.

Furthermore, the back surface of the FPC substrate is also covered with transparent protective glue with an arc-shaped outer surface. It can be understood that, through the reflection and refraction of the transparent protective glue, the LED color light bar can realize the 360-degree full-angle light emitting effect.

It is understood that the alternatives of the LED color light bar in the above embodiment 1 are also applicable to the LED color light bar in this embodiment, and therefore, the detailed description thereof is omitted.

Example 3

The embodiment provides a lamp, which includes the LED color light bar described in embodiment 1 or embodiment 2, and the lamp can achieve light emitting effects of different colors through the LED color light bar.

The LED colored lamp strip in the lamp comprises a flexible substrate 1, at least one conducting circuit 2 and LED flip chips 3 corresponding to the number of the channels, wherein the conducting circuit 2 is arranged on the flexible substrate 1, the LED flip chips 3 in each channel are electrically connected with the conducting circuit 2 through solder paste, the flexible substrate 1 is provided with transparent protective glue 4, and the protective glue covers the LED flip chips 3 continuously along the conducting circuit 2.

Optionally, the LED color light bar can be placed in lamps with different shapes such as an annular structure, a rectangular structure or a heart-shaped structure, so that the light emitting display requirements of different types of lamps are met.

It is understood that the options of the LED color light bar described in the above embodiment 1 or embodiment 2 are also applicable to the light fixture of this embodiment, and therefore, the detailed description thereof is omitted.

In all examples shown and described herein, any particular value should be construed as merely exemplary, and not as a limitation, and thus other examples of example embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The above-described embodiments are merely illustrative of several embodiments of the present invention, which are described in detail and specific, but not intended to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims (10)

1. An LED color light bar, comprising: the flexible substrate, set up and be in at least a conducting wire on the flexible substrate and the LED flip chip that corresponds the way number, a plurality of LED flip chip in every way pass through tin cream with conducting wire electric connection, the flexible substrate is provided with transparent protection and glues, the protection is glued along the conducting wire covers in succession the LED flip chip.

2. The LED color light bar of claim 1, comprising: the LED flip chip comprises three LED flip chips, wherein the first LED flip chip is a red LED flip chip, the second LED flip chip is a green LED flip chip, and the third LED flip chip is a blue LED flip chip.

3. The LED color light bar according to claim 1, wherein at least two of the LED flip chips with the corresponding number of the LED flip chips have the same light emission color, and phosphor powder for adjusting color is added into the protective adhesive of at least one of the LED flip chips in each of the LED flip chips with the same light emission color.

4. The LED color lamp strip of claim 1, wherein the outer surface of the protective adhesive is arc-shaped.

5. The LED color light bar of claim 1, wherein the flexible substrate is a light permeable flexible substrate.

6. The LED color light bar of claim 5, wherein the back surface of the light permeable flexible substrate is covered with a transparent protective adhesive with an arc-shaped outer surface.

7. The LED color light bar of claim 1, wherein the LED flip chips in the same path are connected in series in sequence.

8. The LED color light bar of claim 1, wherein at least two adjacent LED flip chips in a same path are grouped, adjacent groups are connected in series, and the LED flip chips in the same group are connected in parallel.

9. The LED color light bar of claim 1, wherein the transparent protective gel is silica gel.

10. A light fixture comprising the LED color light bar of any one of claims 1-9.