CN203367275U

CN203367275U - Single-sided light emitting LED light source and double-sided light emitting LED light source

Info

Publication number: CN203367275U
Application number: CN2013203138495U
Authority: CN
Inventors: 林介本; 郭震宁
Original assignee: FUJIAN QUANZHOU WORLDSLIGHTING Co Ltd
Current assignee: FUJIAN QUANZHOU WORLDSLIGHTING Co Ltd
Priority date: 2013-06-03
Filing date: 2013-06-03
Publication date: 2013-12-25
Anticipated expiration: 2023-06-03

Abstract

The utility model discloses a single-sided light emitting LED light source and a double-sided light emitting LED light source. The single-sided light emitting LED light source comprises a transparent substrate, a metal conductive piece, a fluorescent adhesive layer, a reflective layer and a plurality of LED chips; wherein the metal conductive piece and the plurality of LED chips are arranged on the upper surface of the transparent substrate, and the positive and negative electrodes of the plurality of LED chips are electrically connected with the metal conductive piece by lead wires; the fluorescent adhesive layer is arranged on the upper surface of the transparent substrate and covers the LED chips and the metal conductive piece; the reflective layer is adhered on the lower surface of the transparent substrate. The double-sided light emitting LED light source uses a fluorescent adhesive layer to replace the reflective layer. The light leaked from the side surface of the single-sided light emitting LED light source is effectively reflected by the reflective layer, the light loss is reduced, and the light efficiency of the LED light source is improved. The light leaked from the side surface of the LED chip of the double-sided light emitting LED light source is effectively absorbed by the fluorescent adhesive layer on the lower surface and effectively used, so as to achieve double-sided light emitting, and moreover overall light flux of the light efficiency of the LED light source are improved.

Description

A kind of single face emitting led light source and double-side LED light source

Technical field

The utility model relates to a kind of LED light source, specifically refers to a kind of single face emitting led light source and double-side LED light source.

Background technology

Along with the fast development of LED encapsulation technology, LED packing forms and support base material are also in constantly evolution and application.General LED packing forms has: direct insertion (DIP) encapsulation, SMD (SMD) encapsulation, high-power (High power) encapsulation and COB(Chip on board) encapsulation etc.The LED support base material also can be divided into: retort stand, aluminum frame/substrate, copper stent, ceramics bracket/substrate etc.Current, the advantage of the well-known LED of being is that volume is little, flexible design, directive property are strong.Even the total light flux of LED light fixture is lower than conventional lamp, because its directive property is good, often LED lamp lighting effect is better than conventional lamp.

It is luminous that current LED light source is generally single face, and the LED support base material adopted is as described above, is opaque structure, and the light that LED chip sends can cause refraction loss through this LED support base material Multi reflection, and light efficiency is low.Separately, the LED light source single face is luminous, and lighting angle is less than 180 degree, and there is certain dark zone in its lower surface of the light fixture of formation, and the illuminance of light fixture upper surface and lower surface differs greatly.In order to reduce this difference, need to be by the angle design of light for being greater than 180 degree, such as on the products such as LED crystal wax candle lamp, LED bulb lamp, related application being arranged at present.At present, people are in order to realize LED light fixture wide-angle illumination effect, and the method for often taking has: (1) is designed to the light fixture of multifaceted light-emitting, as LED corn lamp/pineapple lamp.(2) 2 substrates that are pasted with LED light source are bonded together back-to-back, form the double-side body, and then realize the wide-angle illumination effect.The advantage of method (1) is that the plurality of LEDs device is distributed on lamp outer casing, flexible design, but reliability is bad, easily causes rosin joint, heat radiation is not enough etc.The shortcoming of method (2) is complex process, needs bonding 2 plate bases of heat conductive silica gel.

The utility model content

A purpose of the present utility model is to provide a kind of single face emitting led light source of high light efficiency performance.

Another purpose of the present utility model is to provide a kind of double-side LED light source, has high light efficiency, and structure and technique is simple and easy, reliable invariant feature again.

In order to reach above-mentioned purpose, solution of the present utility model is:

A kind of single face emitting led light source, comprise transparent base, metallic conduction part, fluorescent adhesive layer, reflector layer and some LED chips; This metallic conduction part and some LED chips all are located at the upper surface of described transparent base, and the positive and negative electrode of these some LED chips all is electrically connected by lead-in wire and this metallic conduction part; Described fluorescent adhesive layer is located on described transparent base upper surface and covers described LED chip and metallic conduction part; Described reflector layer is sticked at the lower surface of described transparent base.

Described transparent base is quartz glass or transparent ceramic.

Described reflector layer is evaporation reflective membrane or reflecting piece.

A kind of double-side LED light source, comprise transparent base, metallic conduction part, fluorescent adhesive layer, reach some LED chips; This metallic conduction part and some LED chips all are located at the upper surface of described transparent base, and the positive and negative electrode of these some LED chips all is electrically connected by lead-in wire and this metallic conduction part; Described fluorescent adhesive layer comprises fluorescent adhesive layer and lower fluorescent adhesive layer, and on this, fluorescent adhesive layer is located on described transparent base upper surface and covers described LED chip and metallic conduction part; Described lower fluorescent adhesive layer is located at the lower surface of described transparent base.

Described transparent base is quartz glass or transparent ceramic.

After adopting such scheme, this Novel photo is for the beneficial effect of prior art: the single face emitting led light source, the LED support base material adopts transparent base, the LED chip of its carrying excites the fluorescent adhesive layer of upper surface luminous, the light that reveal the light side is by the reflector layer usable reflection, reduce the light loss effect, improve the LED light source light efficiency.The double-side LED light source, reflector layer is replaced with to fluorescent adhesive layer, transparent base transmitance excellence, the fluorescent adhesive layer of lower surface effectively absorbs the light of revealing the LED chip side and effectively utilizes, realize double-side, and further improved whole luminous flux and the light efficiency of LED light source.

The accompanying drawing explanation

Fig. 1 is the structural representation of this Novel single-face emitting led light source;

Fig. 2 is the structural representation of this novel two-sided emitting led light source.

Label declaration

Transparent base 1 metallic conduction part 2

LED chip 3 fluorescent adhesive layers 4

On reflector layer 5, fluorescent adhesive layer 61

Lower fluorescent adhesive layer 62 lead-in wires 7

Embodiment

Below in conjunction with the drawings and specific embodiments to originally being described in further detail.

This is novel relates to a kind of single face emitting led light source, as shown in Figure 1, comprises transparent base 1, metallic conduction part 2, some LED chips 3, fluorescent adhesive layer 4 and reflector layers 5.

Metallic conduction part 2 and some LED chips 3 all are located at the upper surface of transparent base 1, and the positive and negative electrode of some LED chips 3 all 7 carries out electric string and is connected with metallic conduction part 2 by going between.The line layer of metallic conduction part 2 for consisting of some metallic conduction sheets, play and go here and there and be electrically connected to LED chip 3 effects, and some metallic conduction sheets installation position on transparent base 1 of metallic conduction part 2 is to determine according to LED chip 3 distributions and connection.Fluorescent adhesive layer 4 is coated on transparent base 1 upper surface and covers LED chip 3 and metallic conduction part 2.Reflector layer 5 is bonded in the lower surface of transparent base 1.

Described transparent base 1 is transparent ceramic; Be perhaps the quartz glass that Mohs' hardness is high, there is the features such as wear-resisting, that hardness is good.Reflector layer 5 is evaporation reflective membrane or bonding reflecting piece, and the reflectivity of this evaporation reflective membrane and reflecting piece reaches more than 90%.

Above-mentioned single face emitting led light source, the LED support base material adopts transparent base 1, and the LED chip 3 of its carrying sends blue light, emits white light after exciting the fluorescent adhesive layer 4 of upper surface.The most of upper surface toward transparent base of this white light penetrates, and the light of revealing toward side, by reflector layer 5 usable reflections of lower surface, reduces the light loss effect, has improved the LED light source light efficiency.

This is novel also relates to a kind of double-side LED light source, as shown in Figure 2, comprises transparent base 1, metallic conduction part 2, some LED chips 3 and fluorescent adhesive layer, and this fluorescent adhesive layer comprises fluorescent adhesive layer 61 and lower fluorescent adhesive layer 62.

Metallic conduction part 2 and some LED chips 3 all are located at the upper surface of transparent base 1, and the positive and negative electrode of some LED chips 3 all 7 is electrically connected with this metallic conduction part 2 by going between.Upper fluorescent adhesive layer 61 is located on transparent base 1 upper surface and covers LED chip 3 and metallic conduction part 2.Lower fluorescent adhesive layer 62 is located at the lower surface of transparent base 1.Double-side LED light source structure and above-mentioned single face LED light source structure similar, the main difference part is, with lower fluorescent adhesive layer 62, substitutes reflector layer 5.Same transparent base 1 is transparent ceramic; Be perhaps the quartz glass that Mohs' hardness is high, there is the features such as wear-resisting, that hardness is good.

The double-side LED light source, the LED chip 3 of transparent base 1 carrying sends blue light, emits white light after exciting fluorescent adhesive layer 4.The most of upper surface toward transparent base 1 of this white light penetrates, and reveal part light side, and the lower surface of past transparent base 1 penetrates.By transparent base 1 transmitance excellence, lower fluorescent adhesive layer 62 effectively absorbs the light of revealing LED chip 3 sides and effectively utilizes, and realizes thus double-side.Compare traditional LED light source, reduce the refraction loss of LED photon, further improved whole luminous flux and the light efficiency of LED light source, become a kind of new-type LED light source of high light efficiency double-side.Certainly in double-side, the front luminosity is greater than back side illuminated brightness, and back side illuminated can avoid dark zone, the light source back side to exist, and improves the illumination comfort level.

The foregoing is only this novel preferred embodiment, all equalizations of doing with this novel claim scope change and modify, and all should belong to the scope of this novel claim.

Claims

1. a single face emitting led light source, is characterized in that: comprise transparent base, metallic conduction part, fluorescent adhesive layer, reflector layer and some LED chips; This metallic conduction part and some LED chips all are located at the upper surface of described transparent base, and the positive and negative electrode of these some LED chips all is electrically connected by lead-in wire and this metallic conduction part; Described fluorescent adhesive layer is located on described transparent base upper surface and covers described LED chip and metallic conduction part; Described reflector layer is sticked at the lower surface of described transparent base.

2. a kind of single face emitting led light source as claimed in claim 1, it is characterized in that: described transparent base is quartz glass or transparent ceramic.

3. a kind of single face emitting led light source as claimed in claim 1, it is characterized in that: described reflector layer is evaporation reflective membrane or reflecting piece.

4. a double-side LED light source, is characterized in that: comprise transparent base, metallic conduction part, fluorescent adhesive layer, reach some LED chips; This metallic conduction part and some LED chips all are located at the upper surface of described transparent base, and the positive and negative electrode of these some LED chips all is electrically connected by lead-in wire and this metallic conduction part; Described fluorescent adhesive layer comprises fluorescent adhesive layer and lower fluorescent adhesive layer, and on this, fluorescent adhesive layer is located on described transparent base upper surface and covers described LED chip and metallic conduction part; Described lower fluorescent adhesive layer is located at the lower surface of described transparent base.

5. a kind of double-side LED light source as claimed in claim 4, it is characterized in that: described transparent base is quartz glass or transparent ceramic.