CN205938594U - Illuminating device - Google Patents

Abstract

The utility model provides an illuminating device, which comprises an outer shell, an inner space is injectd to the shell, set up in the base plate of inner space, the base plate includes smooth surface of light source, be provided with light emitting component and electronic component on the surface of light source, its characterized in that: illuminating device still includes the isolation structure, the isolation structure set up in the inner space, the isolation structure includes the division board, the division board cooperate in the base plate surface of light source surperficial relatively, the division board is realized the base plate with electric isolation between the shell. Illuminating device, but adopt the relatively poor aluminium base board cooperation insulating material of high thermal conductivity pressure resistance to guarantee the withstand voltage security and the heat dissipation requirement of lamps and lanterns.

Description

A kind of light-emitting device

Technical field

This utility model is related to a kind of light-emitting device.

Background technology

At present, for reduces cost, most of light fixture uses non-isolated power supply.Use non-isolated power supply at these In light fixture, in order to meet safety standard it is necessary to pass through Hi-pot test, therefore light source board can only use FR1, CEM1, CEM3, height Lead the higher sheet material of this kind of insulating properties such as CEM3, but this kind of sheet material has a drawback, heat conductivility is poor.And current lamp Tool design inclination is in miniaturization, and light source and drive part arrangement optoelectronic integration on the same substrate designs also by increasingly How to adopt, this design makes the thermal power on substrate concentrate very much, be at this moment continuing with above insulating properties higher but lead The poor sheet material of heat will run into heat conduction bottleneck, and heat concentrates at thermal source it is impossible to be scattered to the radiator of outside, leads to thermal source temperature Degree is higher.Now another scheme is exactly the ceramic substrate using heat conductivility high point, but the problem of ceramic substrate is Price is very high, and the cost increase of whole lamp can be led to a lot.

Utility model content

The purpose of this utility model is to solve the above problems, providing a kind of luminous dress taking into account insulation and cooling requirements Put.

This utility model is to realize above-mentioned functions, be employed technical scheme comprise that a kind of light-emitting device of offer, including shell, Described shell limits an inner space；It is arranged at the substrate of described inner space, described substrate includes smooth surface of light source, institute State light-emitting component and electronic component are provided with surface of light source it is characterised in that：Described light-emitting device also includes isolation structure, described Isolation structure is arranged at described inner space, and described isolation structure includes division board, and described division board is matched with described substrate The apparent surface of described surface of light source, described division board realizes the electrical isolation between described substrate and described shell.

Preferably, described isolation structure also includes being arranged at described division board outer peripheral edge, along described surface of light source direction upwards The side wall extending.

Preferably, the height of the described side wall of described isolation structure is higher than any one of electronic component on described substrate Height.

Preferably, described division board and described side wall are integrally formed.

Preferably it is characterised in that：Described isolation structure and the thermo-contact of described substrate.

Preferably, described isolation structure and the thermo-contact of described shell, in described light-emitting component, described substrate, described isolation Structure is to forming thermal dissipating path between described shell.

Preferably, the material of described isolation structure is insulant.

Preferably, the material of described isolation structure is heat-conducting plastic or heat conductive silica gel.

Preferably, described isolation structure is assembled in described shell.

Preferably, described isolation structure and described shell are integrally formed.

Preferably, described substrate is metal basal board.

Preferably, described shell is made up of metal material.

But light-emitting device described in the utility model, using the aluminium base coordinated insulation of high thermal conductivity pressure poor-performing Material is ensureing pressure safety and the cooling requirements of light fixture.

Brief description

Fig. 1 is the structural representation profile of this utility model embodiment one；

Fig. 2 is the structural representation explosive view of this utility model embodiment one；

Fig. 3 is the structural representation of this utility model embodiment one isolation structure；

Fig. 4 is the structural representation of this utility model embodiment two.

Specific embodiment

Below in conjunction with the drawings and specific embodiments to the utility model proposes light-emitting device be described in further detail.

As shown in Figure 1, 2, the light-emitting device in the present embodiment is a Down lamp to embodiment one, and this Down lamp is tied for integral type Structure, it has a cylindric shell 1, and shell 1 limits an inner space, and shell 1 is also and face ring and saturating in the present embodiment Optic panel cooperation constitutes the outer surface of Down lamp, can be according to the shape of concrete light fixture, design requirement in other preferred embodiments It is equipped with different accessories, such as meet the watertight panel of waterproof requirement, or can not also in light Exit positions in order to simplify design Other elements are still further set.And may also comprise all kinds of optical modules 4 inside light-emitting device, for lens and anti-such as in the present embodiment Light shield.

It is provided with substrate 3 in the inner space of shell 1, substrate 3 is smooth tabular, sets on a face of substrate 3 It is equipped with light-emitting component 5, our this face is called surface of light source.Light-emitting component 5 is LED in the present embodiment, this utility model institute State the LED that LED can refer to encapsulate, unencapsulated LED, surface mount LED, chip on board LED, include a certain type optical element LED.In order that light-emitting component 5 normal work, light fixture also needs to driving power supply part, and this is accomplished by installing some electronic components 6, In the present embodiment, electronic component 6 and light-emitting component 5 are arranged on the same face of same substrate, that is, be arranged on substrate 3 On surface of light source, electronic component 6 and light-emitting component 5, the relative table of surface of light source are placed with the surface of light source of substrate 3 as can be seen from Fig. 1 Face does not then substantially have components and parts or only has less components and parts on a small quantity, therefore more smooth, and this surface is the installed surface of substrate.For Prevent heat from gathering, in the present embodiment, substrate 3 uses the preferable aluminium base of heat conductivility, and aluminium base cannot meet resistance to Pressure request, is therefore also provided with an isolation structure 2 between substrate 3 and shell 1, and isolation structure 2 is as shown in figure 3, its main body Be one piece and division board 201 that substrate 3 matches, substrate 3 can pass through the structures such as buckle and division board 201 connect it is also possible to It is pasted together by heat-conducting glue, heat-conducting pad etc. and division board 201.The light source of division board 201 and substrate 3 in the present embodiment Apparent surface's laminating in face, both thermo-contacts.In this specification, " thermally contact " expression by conduction of heat, convection current and radiation At least one transmit heat between substrate 3 and division board 201.The presence of division board 201 makes substrate 3 be placed in shell 1 When interior, there is no directly contact between substrate 3 and shell 1 to guarantee by Hi-pot test, but substrate 3 in the present embodiment On be additionally provided with electronic component 6, it will be seen that electronic component 6 is to protrude substrate 3 surface from Fig. 1, that is, be higher than Substrate 3 surface certain altitude, so when being arranged on shell 1 inside, electronic component 6 is possible to the contacts side surfaces with shell 1, because This isolation structure 2 in the present embodiment also includes being arranged at division board 201 outer peripheral edge, upwardly extends along described surface of light source direction Side wall 202, the outward appearance of whole isolation structure 2 is similar to a bowl structure, and substrate 3 is arranged on the inside of isolation structure 2, side The height of wall 202 is higher than the height of any one electronic component 6 on substrate 2.

Division board 201 and side wall 202 are integrally molded so as isolation structure 2, and isolation structure 2 can be assembled in shell 2, assembling mode It is in the inner space can be directly positioned on shell 2 and then to pass through face ring and limit it in front to move it is also possible in shell 1 Portion arranges mounting bracket, and isolation structure 2 passes through mounting bracket and shell 1 connects.Being otherwise isolated from structure 2 can also be with shell 1 one Body formed.Isolation structure 2 and shell 1 are connected as one by injection in some preferred embodiment, in the bottom of metal shell Directly injection forms isolation structure 2.Isolation structure 2 can also be integrally formed by moulding alclad, the mode such as Overmolded and shell.

In addition to thermally contacting with substrate 3, isolation structure 2 also thermally contacts isolation structure 2 with shell 1, the position of their contacts Can be division board 201 or side wall 202 or can thermally contact with shell 1, so to increase area of dissipation simultaneously It is the formation of one by thermal dissipating path light-emitting component 5, substrate 3, isolation structure 2 to shell 1.And the selection of shell 1 is preferred The good metal material of heat conductivility.When light source is for high power density thermal source, such radiator structure effect is particularly evident, I High power density thermal source said herein refer to many great power LEDs（Single 1W in the present embodiment）High concentration（In the present embodiment LED spacing only has 0.4mm）In limited area.

In order to reach the effect of electrical isolation, the material of isolation structure 2 should be the insulant such as plastics, silica gel, pottery, In order that better heat-radiation effect, heat-conducting plastic or heat conductive silica gel can be adopted.

What Fig. 4 showed is the structural representation of embodiment two, and embodiment two is a kind of light fixture of strip, and it includes strip The shell 31 of shape, bar shaped are provided with the bar shaped substrate 33 of light-emitting component, stretch lens 34, are also provided between substrate 33 and shell 31 There is isolation structure 32, isolation structure 32 is also elongated, there is upwardly extending side wall its both sides.Isolation structure 32 and substrate 33, Shell 31 thermally contacts.

Description to this utility model preferred embodiment illustrates that and describes above, is not intended to this utility model Limit or be confined to disclosed concrete form it is clear that many modifications and variations may be made, these modifications and variations may be right It is obvious for those skilled in the art it should include in the scope of the present utility model being defined by the appended claims Within.

Claims (12)

1. a kind of light-emitting device, including shell, described shell limits an inner space；It is arranged at the base of described inner space Plate, described substrate includes smooth surface of light source, described surface of light source is provided with light-emitting component and electronic component it is characterised in that： Described light-emitting device also includes isolation structure, and described isolation structure is arranged at described inner space, described isolation structure include every From plate, described division board is matched with the apparent surface of the described surface of light source of described substrate, described division board realize described substrate and Electrical isolation between described shell.

2. light-emitting device according to claim 1 it is characterised in that：Described isolation structure also includes being arranged at described isolation Plate outer peripheral edge, along the upwardly extending side in described surface of light source direction wall.

3. light-emitting device according to claim 2 it is characterised in that：The height of the described side wall of described isolation structure is higher than The height of any one of electronic component on described substrate.

4. light-emitting device according to claim 2 it is characterised in that：Described division board and described side wall are integrally formed.

5. the light-emitting device according to claim 1,2,3 or 4 it is characterised in that：Described isolation structure and described substrate heat Contact.

6. light-emitting device according to claim 5 it is characterised in that：Described isolation structure and the thermo-contact of described shell, Described light-emitting component, described substrate, described isolation structure are to forming thermal dissipating path between described shell.

7. the light-emitting device according to claim 1,2,3 or 4 it is characterised in that：The material of described isolation structure is insulation Material.

8. light-emitting device according to claim 7 it is characterised in that：The material of described isolation structure is heat-conducting plastic or leads Hot silica gel.

9. the light-emitting device according to claim 1,2,3 or 4 it is characterised in that：Described isolation structure is assembled in described outer Shell.

10. the light-emitting device according to claim 1,2,3 or 4 it is characterised in that：Described isolation structure and described shell one Body formed.

11. light-emitting devices according to claim 1,2,3 or 4 it is characterised in that：Described substrate is metal basal board.

12. light-emitting devices according to claim 1,2,3 or 4 it is characterised in that：Described shell is made up of metal material.