CN206353544U - A kind of COB light source - Google Patents
A kind of COB light source Download PDFInfo
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- CN206353544U CN206353544U CN201621395539.2U CN201621395539U CN206353544U CN 206353544 U CN206353544 U CN 206353544U CN 201621395539 U CN201621395539 U CN 201621395539U CN 206353544 U CN206353544 U CN 206353544U
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- Prior art keywords
- colloid
- light source
- cob light
- substrate
- led chip
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Abstract
The utility model discloses COB light source, including substrate, the first colloid and some LED chips are provided with the substrate, first colloid covers the LED chip, and being all around provided around on box dam body, the substrate for first colloid is provided with some reflector grooves, the reflector groove sets LED chip at least described in one, electrically connected between the LED chip by gold thread, the second colloid is provided with first colloid and box dam body, the longitudinal section of second colloid is arc.The utility model is by will set reflector groove on substrate, using the offside reflection light of reflector groove, the light for making LED chip outgoing evenly, improves luminous flux.Meanwhile, by being provided with the second colloid on the first colloid and box dam body, the longitudinal section of second colloid is arc, further the luminous flux of lifting unit area.
Description
Technical field
The utility model is related to LED light source technology, more particularly to a kind of COB light source.
Background technology
COB light source is the integrated area source of the specular removal that LED chip is placed directly against on the mirror metal substrate of high reflecting rate
Technology, COB light source can simply be interpreted as the integrated area source of high power.It has electrical stabilization, circuit design, optical design,
Heat dissipation design is scientific and reasonable；Using heat sink technology, it is ensured that LED has leading hot lumen depreciation (95%)；It is high
Colour developing, it is luminous uniform, without hot spot, health environment-friendly the features such as.
The constraint in terms of conventional LED package is limited to, the COB light source of traditional external form is primarily present following a few point defects：
1st, cofferdam is molded on substrate, Gu, the plane COB light source of fluorescent glue, dispensing thickness and box dam are filled after core wire piece
Maintain an equal level, its lighting angle is fixed as 120 degree.
2nd, in order to which the luminous flux for increasing unit area is exported, the fluorescent glue of encapsulation and the distance of box dam are near, box dam and fluorescence
Silica gel characteristic is all softer, during the conveyance of assembling pickup and the operation of light fixture, if touched, gold thread can be caused by pressurizeing
Fracture, so as to cause the dead lamp of LED open circuits.
3rd, COB light source is that by N number of integrated chip on one piece of substrate, the distribution in order to determine chip is necessarily planar, entirely
Locality, and the height of conventional box dam need to meet H≤0.6mm, the distance of chip and box dam need to meet L<10mm, this wants derivation
Cause hot spot obvious.
In a word, existing COB light source makes light source with cofferdam filling fluorescent glue, lighting angle is fixed, hot spot surrounding is partially yellow,
Dead lamp is easily touched during assembling and conveyance, COB light source product reliability is low, and product quality is poor.Thus prior art also has
To be modified and raising.
Utility model content
In view of in place of above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of COB light source, can improved
The luminous flux of COB light source and anti-extrusion ability.
In order to achieve the above object, the utility model takes following technical scheme：
Some LED chips and the first colloid, first glue are provided with a kind of COB light source, including substrate, the substrate
Body covers the LED chip, and being all around provided around on box dam body, the substrate of first colloid is provided with some reflective
Cup groove, the reflector groove sets and electrically connected at least described in one between LED chip, the LED chip by gold thread, and described first
The second colloid is provided with colloid and box dam body, the longitudinal section of second colloid is arc.
In described COB light source, the bottom surface of the reflector groove is plane, and the side of reflector groove is the cambered surface of indent,
The side of the reflector groove is provided with specular layer.
In described COB light source, first colloid is in cuboid.
In described COB light source, first colloid is fluorescent colloid, and the second colloid is transparent silicon colloid.
In described COB light source, first colloid is transparent silicon colloid, and the second colloid is fluorescent colloid.
In described COB light source, the spacing between the edge and box dam body of second colloid is more than 10mm.
In described COB light source, the cross section of second colloid is circle, heart, triangle, rectangle or ellipse.
In described COB light source, mounting hole is additionally provided with the substrate.
In described COB light source, positive terminal pad and negative terminal pad are additionally provided with the substrate.
It is provided with the COB light source provided compared to prior art, the utility model, including substrate, the substrate some
LED chip and the first colloid, first colloid cover the LED chip, and being all around provided around for the first colloid is enclosed
Quantity reflector groove corresponding with LED chip is provided with dam body, the substrate, the LED chip is in reflector groove, institute
State and electrically connected by gold thread between LED chip, the second colloid, second colloid are provided with first colloid and box dam body
Longitudinal section be arc.The utility model is by will set reflector groove on substrate, using the offside reflection light of reflector groove,
The light for making LED chip outgoing evenly, improves luminous flux.Meanwhile, by being provided with the first colloid and box dam body
Two colloids, the longitudinal section of second colloid is arc, further the luminous flux of lifting unit area.
Brief description of the drawings
The side structure schematic diagram of the substrate for the COB light source that Fig. 1 provides for the utility model.
The side structure schematic diagram for the COB light source that Fig. 2 provides for the first preferred embodiment that the utility model is provided.
The side structure schematic diagram for the COB light source that Fig. 3 provides for the second preferred embodiment that the utility model is provided.
Embodiment
The utility model passes through the structure design to COB light source, the design of equipment die, the contrast design of LED lamp, light
Design is learned, full angle, the COB light source of anti-extrusion is produced, it is not only stiff illuminating device composition core to make LED packaged light sources
The heart, so it is more agile；And output of the COB light source to unit luminous flux is greatly improved, and improves COB type products
Quality.
To make the purpose of this utility model, technical scheme and effect clearer, clear and definite, develop simultaneously implementation referring to the drawings
The utility model is further described example.It should be appreciated that specific embodiment described herein is only to explain this practicality
It is new, it is not used to limit the utility model.
Refer to and be provided with Fig. 1 and Fig. 2, the COB light source that the utility model is provided, including substrate 11, the substrate 11
Some colloids 13 of LED chip 12 and first, first colloid 13 covers the LED chip 12, the four of first colloid 13
Surrounding is provided around box dam body 14, and first colloid 13 is concordant with box dam body 14.On first colloid 13 and box dam body 14
The second colloid 16 is provided with, the longitudinal section of second colloid 16 is arc, i.e., the side of described second colloid 16 is hemispherical,
Reflected using hemispheric second colloid 16 or remote excitation is luminous, added the lighting angle of COB light source, improve list
The luminous flux of plane product, and hemispheric second colloid 16 can protect LED chip 12 and gold thread, can resist the outer of all angles
Power, makes COB light source when being extruded or colliding, is hardly damaged.
It is preferred that the utility model COB light source sets some reflector grooves 15 on the substrate 11, the reflector groove is set
One or plurality of LEDs chip 12 are set in the reflector groove 15 of LED chip at least described in one, i.e., one, plurality of LEDs chip is being set
When 12, the LED chip different colours in each reflector groove, further according to the LED chip of different colours, are correspondingly arranged multiple negative poles
Electrode, to realize the light modulation of different colours, enriches product function.
The utility model by setting reflector groove 15 on the substrate 11, using the offside reflection light of reflector groove 15,
The light for making the outgoing of LED chip 12 evenly, improves luminous flux.Meanwhile, the mode of reflector groove 15 is opened up on the substrate 11,
Compared with tradition sets the mode of reflector on the substrate 11, the present embodiment can make COB light source be made thinner, meet COB light source
Product requirement.
Specifically, gold thread is passed through between the LED chip 12（Not shown in figure）Electrical connection, each LED chip 12 can be constituted
Multiple LED strings.It is additionally provided with light modulation chip on the substrate 11, the negative pole of each LED string is to dimming corresponding I/O mouthfuls of chip
Electrical connection, the positive pole connection LED power of each LED string, is dimmed by the light on and off state of each LED string of light modulation chip controls.
Please continue to refer to Fig. 1, the bottom surface of the reflector groove 15 is plane, and the side of reflector groove 15 is the arc of indent
Face, it is in bowl-shape to make reflector groove 15, and the side of the reflector groove 15 is provided with specular layer.The light of the outgoing of LED chip 12
Line can be increased in reflector groove by outgoing after the one or many reflections in the side of reflector groove 15 using the cambered surface of this indent
Concentration ratio, further increases the luminous flux of unit area.
Also referring to Fig. 1, Fig. 2 and Fig. 3, first colloid 13 be in cuboid, second colloid 16 it is transversal
Face is circle, heart, triangle, rectangle or ellipse, so as to set the shape of COB light source according to actual needs, so as to change
Become the design of conventional light source product, make COB light source more art up.
Further, a pair of mounting holes are additionally provided with the substrate 11（Not shown in figure）, the mounting hole setting base
A pair of Angle Positions of plate 11, are installed in order to which COB light source is stable.Further, positive pole is additionally provided with the substrate 11 to connect
Wire bonding disk（Not shown in figure）With negative terminal pad（Not shown in figure）, also can be directly by the way of lead wiring, directly
It is connected with the power line of field of employment.
Please continue to refer to Fig. 1 to Fig. 3, the spacing between the edge and box dam body 14 of second colloid 16 is more than 10mm,
Increase the thickness at the edge of the second colloid 16, when making COB light source by collision and extruding, gold thread will not be damaged and cause dead lamp,
Improve the reliability of COB light source.
Different COB light sources can be made according to the combination of the first colloid 13 and the second colloid 16 in the utility model, from
And meet different user requirement.
As shown in Fig. 2 first colloid 13 is fluorescent colloid, the second colloid 16 is transparent silicon colloid, by the first glue
Body 13 inspires white light, is then reflected by the silica gel of the second colloid 16, COB light efficiencies is lifted 15%-18%.
The production method of the present embodiment is：Reflector groove 15 is first opened up on the substrate 11, is plated in the side of reflector groove 15
Specular reflective metal layers, then the die bond LED chip 12 in reflector groove 15, then weld gold thread, then using mould top（Molding, i.e.,
Molding）Technique mould top girth dam glue, then in intermediate region the first colloid of point 13 of box dam（That is fluorescent glue）, then using mould top work
Skill, designs corresponding dies with epoxy compound, and the second colloids of molding 16 on box dam and the first colloid 13.Second colloid 16 is
Bright silica gel, by the refraction of lens, lifts the light efficiency of COB light source, moreover it is possible to eliminate light class caused by box dam.
As shown in figure 3, first colloid 13 is transparent silicon colloid, the second colloid 16 is fluorescent colloid, passes through LED chip
The 12 luminous effects for exciting light-emitting phosphor in molding at a distance, realizing remote excitation fluorescent material making white light.Its production method
Be with the difference of above-described embodiment, after mould top girth dam glue, directly take transparent silica gel carry out first time sealing, then
Molding link takes the configuration fluorescent material in molding glue that the second colloid 16 with fluorescent material is made, to realize that remote excitation is sent out
Light.
In summary, the utility model has the advantages that compared with prior art：
1st, the mode of the colloid of hemispherical second covering box dam and the first colloid is employed, the external force of all angles can be resisted,
Make COB light source when being extruded or colliding, be hardly damaged, improve the reliability and product quality of COB light source.
2nd, reflected using the reflection of reflector groove and transparent silica gel, the output of unit area luminous flux greatly improved, and can
To design and produce the COB light source of different angles, outdoor cuboid, the irradiation of rectangle road are more suitable for；And market, hotel, sell
The point of field highlights irradiation.
3rd, COB light source of the present utility model realizes LED same sizes, same to chip, the unit luminous flux with light-emitting area
Greatly lifting, up to 15-18%, by the design to the mould for being molded the second colloid, allows LED/light source to be shone from simple
Bright object is transformed to a handicraft, gives Design of Luminaires teacher more inspiration enlightenments.
4th, the up-down structure space of the second colloid can allow design more flexible, the filling of long-distance fluorescent powder and excite, pole
The big thermal resistance for reducing LED chip.
It is understood that for those of ordinary skills, can according to the technical solution of the utility model and
The design of its utility model is subject to equivalent substitution or change, and all these changes or replacement should all belong to appended by the utility model
Scope of the claims.
Claims (9)
1. the first colloid and some LED chips are provided with a kind of COB light source, including substrate, the substrate, first colloid
Cover the LED chip, first colloid is all around provided around box dam body, it is characterised in that set on the substrate
There are some reflector grooves, the reflector groove sets and is electrically connected at least described in one between LED chip, the LED chip by gold thread
Connect, the second colloid is provided with first colloid and box dam body, the longitudinal section of second colloid is arc.
2. COB light source according to claim 1, it is characterised in that the bottom surface of the reflector groove is plane, reflector groove
Side be indent cambered surface, the side of the reflector groove is provided with specular layer.
3. COB light source according to claim 1, it is characterised in that first colloid is in cuboid.
4. the COB light source according to claims 1 to 3 any one, it is characterised in that first colloid is fluorescent glue
Body, the second colloid is transparent silicon colloid.
5. the COB light source according to claims 1 to 3 any one, it is characterised in that first colloid is transparent silica gel
Body, the second colloid is fluorescent colloid.
6. COB light source according to claim 1, it is characterised in that between the edge and box dam body of second colloid
Spacing is more than 10mm.
7. COB light source according to claim 1, it is characterised in that the cross section of second colloid for it is circular, heart-shaped,
Triangle, rectangle or ellipse.
8. COB light source according to claim 1, it is characterised in that be additionally provided with mounting hole on the substrate.
9. COB light source according to claim 1, it is characterised in that be additionally provided with the substrate positive terminal pad and
Negative terminal pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621395539.2U CN206353544U (en) | 2016-12-19 | 2016-12-19 | A kind of COB light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621395539.2U CN206353544U (en) | 2016-12-19 | 2016-12-19 | A kind of COB light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206353544U true CN206353544U (en) | 2017-07-25 |
Family
ID=59346589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621395539.2U Active CN206353544U (en) | 2016-12-19 | 2016-12-19 | A kind of COB light source |
Country Status (1)
| Country | Link |
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| CN (1) | CN206353544U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108538996A (en) * | 2018-03-07 | 2018-09-14 | 广州硅能照明有限公司 | A method of improving COB light outputs |
| CN110930890A (en) * | 2018-09-20 | 2020-03-27 | 深圳市海讯高科技术有限公司 | COB display screen mask and operation method thereof |
-
2016
- 2016-12-19 CN CN201621395539.2U patent/CN206353544U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108538996A (en) * | 2018-03-07 | 2018-09-14 | 广州硅能照明有限公司 | A method of improving COB light outputs |
| CN110930890A (en) * | 2018-09-20 | 2020-03-27 | 深圳市海讯高科技术有限公司 | COB display screen mask and operation method thereof |
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