Fixing type COB light source
Technical field
The utility model belongs to LED light source technical field, and in particular to a kind of fixing type COB light source.
Background technique
Semiconductor illumination technique is 21 century most promising one of high-tech area, and LED (Light
Emitting Diode, light emitting diode) it is its core technology.LED is that one kind can directly convert electrical energy into shining for luminous energy
Element, due to it have operating voltage is low, power consumption is small, luminous efficiency is high, emission response time is extremely short, it is photochromic it is pure, structure is firm
Gu, few and at low cost etc. the series of characteristics of shock resistance, vibration resistance, stable and reliable for performance, light-weight, volume, thus obtained wide
General application and the development advanced by leaps and bounds.
The one kind being commonly used is that COB light source is exactly conductive by bare chip or non-conductive adhesive is adhered on interconnection substrates,
Then it carries out wire bonding and realizes its electrical connection.
Traditional encapsulation mode is used since current COB encapsulation continues, bracket is bonded in heat dissipation base by heat treatment
On plate, chip is bonded on heat-radiating substrate by silica gel, over time, is easy to appear glue and is split phenomenon, heat-radiating substrate with
Bracket, chip are easily separated from, and lead to structural instability, are easy to appear light decay and dead lamp phenomenon, in addition, lead is welded to heat dissipation
On substrate, welding is taken time and effort, and increases cost.
Summary of the invention
The fixing type COB light source reasonable and practical the purpose of the utility model is to provide a kind of structure setting.
The technical solution for realizing the utility model aim is a kind of fixing type COB light source, including substrate, is arranged in the base
LED chip on plate, is provided with lead and fluorescent glue on the substrate, and the LED chip is connected and leads to the lead
It crosses silica gel to be fixed on substrate, the top surface of the substrate is provided with truncated cone-shaped protrusion, it is convex that the LED chip cements in truncated cone-shaped
On the side and top surface risen, the bottom of the truncated cone-shaped protrusion is fixed on the top surface of substrate by silica gel and is in fluorescent glue,
It is evenly arranged with card hole in the side of the substrate, is additionally provided with radiating bottom plate, is set on the top surface edge of the radiating bottom plate
It is equipped with annulus protrusion, the through-hole that position is matched with the card hole position, the heat dissipation bottom are provided in the annulus protrusion
The bottom surface for riding over substrate of plate and the annulus protrusion are in the side of substrate, and lock-bit silica gel is provided in the through-hole
Stick.
Heat conductive silica gel is provided between the radiating bottom plate and the bottom surface and annulus protrusion and the side of substrate of substrate to fill out
Fill layer.
The diameter of the lock-bit silica gel stick is caught in described slightly larger than through-hole and the diameter of card hole, the lock-bit silica gel stick interference
In through-hole and card hole
The utility model has the effect of positive: the structure setting of the utility model is reasonable, and multi-angle not only may be implemented
It shines, while can effectively guarantee that the positioning of radiating bottom plate is fixed, it is not easy to occur loosening or deviate, being conducive to improve it makes
It is practical with the service life.
Detailed description of the invention
In order to be more likely to be clearly understood the content of the utility model, below according to specific embodiment and combine attached
Figure, is described in further detail the utility model, in which:
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
(embodiment 1)
Fig. 1 shows a kind of specific embodiment of the utility model, and wherein Fig. 1 is the structural representation of the utility model
Figure.
See Fig. 1, a kind of fixing type COB light source, including substrate 1, the LED chip 2 on the substrate 1 is set, described
Lead 3 and fluorescent glue 4 are provided on substrate 1, the LED chip 2 is connected with the lead and is fixed on substrate by silica gel
On, the top surface of the substrate 1 is provided with truncated cone-shaped protrusion 5, the LED chip cements in the side and top surface of truncated cone-shaped protrusion
On, the bottom of the truncated cone-shaped protrusion 5 is fixed on the top surface of substrate 1 by silica gel 6 and is in fluorescent glue 4, in the substrate 1
Side be evenly arranged with card hole 7, be additionally provided with radiating bottom plate 8, be provided with annulus on the top surface edge of the radiating bottom plate
Protrusion 9 is provided with the through-hole 10 that position is matched with the card hole position, the patch of the radiating bottom plate in the annulus protrusion
It is pressed in the bottom surface of substrate and the annulus protrusion is in the side of substrate, lock-bit silica gel stick 11 is provided in the through-hole.
Heat conductive silica gel is provided between the radiating bottom plate and the bottom surface and annulus protrusion and the side of substrate of substrate to fill out
Fill layer 12.
The diameter of the lock-bit silica gel stick is caught in described slightly larger than through-hole and the diameter of card hole, the lock-bit silica gel stick interference
In through-hole and card hole
The structure setting of the utility model is reasonable, and multi-angle not only may be implemented and shine, while can effectively guarantee to dissipate
The positioning of hot bottom plate is fixed, it is not easy to and occur loosening or deviate, is conducive to improve its service life, it is practical.
Obviously, the above embodiments of the present invention is merely examples for clearly illustrating the present invention, and
It is not limitations of the embodiments of the present invention.For those of ordinary skill in the art, in above description
On the basis of can also make other variations or changes in different ways.There is no need and unable to give all embodiments
Exhaustion.And the obvious changes or variations that these connotations for belonging to the utility model are extended out still fall within it is practical
Novel protection scope.