WO2011072465A1

WO2011072465A1 - Lighting device and illumination apparatus with the same

Info

Publication number: WO2011072465A1
Application number: PCT/CN2009/076320
Authority: WO
Inventors: 米蒂克·乔尔杰
Original assignee: 东莞市美能电子有限公司
Priority date: 2009-12-14
Filing date: 2009-12-31
Publication date: 2011-06-23
Also published as: CN201568915U

Abstract

A lighting device and an illumination apparatus with the same are provided. The lighting device comprises an elastic base piece (100) and multiple lighting units (200). The elastic base piece (100) comprises at least two support pieces (120) and a connection piece (130). The support pieces (120) are arranged in turn. Each support piece (120) comprises a front part (140) and an end part. All the end parts of the support pieces (120) are connected to the connection piece (130) and are integrated with the connection piece (130). The lighting units (200) are distributed on the support pieces (120). The illumination apparatus comprises the lighting device, a transparent cover (900), a power supply device (700) and a seat (800). The transparent cover (900) comprises an open surface. The lighting device is placed into the transparent cover (900) through the open surface and adheres to the inner wall of the transparent cover (900). The seat (800) encloses the open surface.

Description

Light-emitting device and lighting device thereof

Technical field

The invention relates to a lighting device and a lighting device therefor. Background technique

Light-emitting diodes (LEDs) have been increasingly used in the field of lighting due to their high luminous efficiency and low energy consumption. However, in general, lighting equipment is subject to existing lighting lines. If LEDs can be further promoted, lighting equipment using LEDs should be more compatible with existing lighting equipment, such as Similar shape and the same interface with the mains.

Thus, many illumination devices using light-emitting diodes are formed in the shape of an existing light bulb. Due to the different light-emitting properties of the light-emitting diodes and the filaments, one prior embodiment is to embed a plurality of light-emitting diodes on the surface of the bulb. This is difficult to process and the processing cost is also high. Summary of the invention

The technical problem to be solved by the present invention is to provide a light-emitting device and a lighting device which are simple to manufacture and install and which are compatible with existing light bulb type lighting devices.

The object of the present invention is achieved by the following technical solutions:

A light emitting device comprising:

The elastic substrate comprises: a planar portion: at least two carrier sheets having end portions and a root portion, and a connecting sheet; the carrier sheets are sequentially arranged, and the root portions of all the carrier sheets are connected to the connecting sheets to form a whole;

A plurality of light emitting units are distributed on the carrier sheet.

With the above technical solution, the light-emitting units are distributed on the elastic substrate as a whole, which is easy to install and also facilitates the electrical connection between the light-emitting units.

Preferably, the light emitting unit is selected to adopt a light emitting diode. Of course, other illuminating devices can be used in the present invention.

In addition, an illumination device using the illumination device is further provided, and further includes:

a transparent cover, corresponding to the illuminating device, comprising an open surface; the illuminating device along an axis of the carrier After being curled, and the end portion is placed into the transparent cover from the open surface, the light-emitting device is opened and attached to the inner wall of the transparent cover;

a power supply device for converting a commercial power into an operating voltage of the light emitting unit;

The base body is enclosed on an open surface of the transparent cover to be connected to an external power source, such as a commercial power source.

Among them, the transparent cover can be selected from a glass cover such as a common light bulb, and the base can also be selected to be a lamp holder similar to a conventional light bulb, or a seat similar to that of a conventional light bulb.

According to the lighting device of the above technical solution, the elastic substrate which is curled into the transparent cover body is naturally opened, or can be attached to the inner wall of the transparent cover by giving a certain external force to make it open better. Thus, the light-emitting unit can also be arranged on the inner wall of the transparent cover. The above technical solutions are easy to process.

In addition, in general, a light-emitting unit such as a light-emitting diode cannot be directly connected to a commercial power source like a normal light bulb, and an electric power supply device is required to rectify and step down the commercial power. With the above technical solution, the light-emitting device placed in the transparent cover does not excessively occupy the internal space of the transparent cover. In a more specific embodiment, the power supply unit can be placed inside the transparent cover. In this way, without affecting the lighting effect, it should be similar to the ordinary light bulb in the external shape, and can directly connect to the commercial power, effectively utilize the existing commercial power network environment, and conform to the user's usage habits.

In addition, visible light can pass through the transparent cover. For the material of the transparent cover, a material with high light transmittance can be selected, or a material with low light transmittance, such as frosted glass, can be selected to obtain a softer and more uniform. Lighting effect.

Preferably, there is a separation gap between adjacent carriers.

Of course, illumination devices having transparent covers of certain special shapes, such as cylindrical transparent covers, may have no separation gap between adjacent carriers, but be integral. However, if the transparent cover is spherical or ellipsoidal, a separate gap is required between adjacent carriers to better open the inner wall of the transparent cover.

Preferably, the carrier sheets have the same shape and are sequentially arranged in parallel.

Further, the number of the carrier sheets is at least three, and the shape of the separation gap between the adjacent carriers is the same.

By adopting the above technical measures, the light-emitting device disposed in the transparent cover can be ensured, the arrangement of the light-emitting units is more uniform, and the light-emitting effect is more uniform.

Preferably, the end of the carrier sheet has a shape of an upper narrow and a lower width.

Wherein, the shape of the upper narrow bottom width includes a trapezoid, which is a tip end, but does not mean a trapezoid in a strictly geometric sense, such as a triangle, and can also be regarded as a special form of the above trapezoid. When the transparent cover is spherical or ellipsoidal, if the above technical measures are not adopted, the ends of the different carriers that are opened in the transparent cover will overlap, which will affect the effect of the installation and assembly.

Preferably, the elastic substrate comprises a structural layer: a metal layer coupled to each other and a flexible PCB layer, and the flexible PCB layer is connected to the light emitting unit.

Further, the metal layer and the flexible PCB layer are bonded by a thermal conductive adhesive.

Further, the metal layer is selected from an aluminum sheet.

By adopting the above technical measures, not only has better elasticity, but also is easy to open, and it is also convenient to install the light-emitting unit, and also has better heat dissipation performance.

Of course, the metal layer may also be made of other metal or alloy materials, but after trial and comparison, the heat dissipation performance of the aluminum sheet is superior.

Preferably, the connecting piece is provided with a plurality of heat dissipating channels arranged in sequence. This heat dissipation channel can also correspond to the heat dissipation channel provided on the base body to further improve its heat dissipation capability. DRAWINGS

1 is a plan view showing a planar structure of an embodiment of a light-emitting device of the present invention;

2 is a schematic structural view showing an embodiment of a light-emitting device of the present invention;

3 is a schematic plan view showing an embodiment of an elastic substrate of the present invention;

Figure 4 is a schematic cross-sectional view showing an embodiment of an elastic substrate of the present invention;

Figure 5 is a schematic view showing the structure of a planing surface of an embodiment of the lighting apparatus of the present invention;

Figure 6 is a side view showing the structure of an embodiment of the lighting apparatus of the present invention.

detailed description

The invention will now be further described with reference to the drawings and preferred embodiments.

As shown in FIG. 1, FIG. 2 and FIG. 3, a light-emitting device includes: an elastic substrate 100 and a plurality of light-emitting units 200 connected in series.

Among them, the elastic substrate 100 includes the following planar portions: 8 correspondingly shaped carrier sheets 120 and connecting sheets 130. The carrier sheet 120 has an end portion 140 and a root portion. The light emitting units 200 are sequentially distributed on the carrier sheet 120, and the root portions of all the carrier sheets 120 are connected to the connecting sheet 130 to form a whole.

The carrier sheets 120 are sequentially arranged in parallel, and the adjacent carrier sheets 120 have separation voids 110 therebetween, and all of the separation gaps 110 have corresponding shapes. The end portion 140 of the carrier sheet 120 has a shape of an upper narrow and a lower width. The light emitting unit 200 is selected to adopt light emitting diodes, and is sequentially arranged along the axial direction of the carrier sheet 120, and is sequentially connected in series.

A plurality of heat dissipating passages 190 are sequentially arranged on the connecting piece 130.

As shown in FIG. 4, the elastic substrate 100 includes a structural layer: a metal layer 191 bonded by a thermal conductive paste 193 and a flexible PCB layer 192 for mounting the light emitting unit 200.

As shown in Figures 5 and 6, the illumination device using the illumination device further includes: a transparent cover 900, a power supply unit 700, and a base 800.

The transparent cover 900 selects an irregular spherical glass cover using an incandescent lamp and has an open surface. After the embodiment of the light-emitting device is curled in the axial direction of the carrier sheet 120, and the end portion 140 is inserted into the transparent cover 900 from the open surface, the light-emitting device is opened and attached to the transparent cover. The inner wall of the 900.

The power supply unit 700 is also disposed inside the transparent cover 900 for converting the commercial power into the operating voltage of the light-emitting unit 200, and is capable of selecting a power supply output of different power for the light-emitting device.

The body 800 is selected to have the corresponding shape of a conventional incandescent lamp holder to facilitate electrical connection to an external incandescent power outlet. In addition, since the transparent cover 900 does not have to be vacuumed like an incandescent lamp, a vent may be opened on the base 800 to facilitate heat dissipation of the illumination device.

The above is a further detailed description of the present invention in connection with the specific preferred embodiments, and the specific embodiments of the invention are not limited to the description. It will be apparent to those skilled in the art that the present invention may be practiced without departing from the spirit and scope of the invention.

Claims

Claim

A lighting device, comprising:

The elastic substrate (100) includes the following planar portions: at least two carrier sheets (120) having end portions (140) and roots, and connecting sheets (130); the carrier sheets (120) are sequentially arranged, all of The root of the carrier sheet (120) is connected to the connecting piece (130) to form a whole;

A plurality of light emitting units (200) are distributed on the carrier sheet (120).

2. A lighting device as claimed in claim 1, characterized in that the adjacent carrier sheets (120) have separation spaces (110) between them.

The light-emitting device according to claim 2, wherein the number of the carrier sheets (120) is at least three, and the carrier sheets (120) have the same shape and are sequentially arranged in parallel, and the adjacent carrier sheets are arranged. The separation gap (110) between (120) has the same shape.

The light-emitting device according to claim 3, wherein the end portion (140) of the carrier sheet (120) has a shape of a narrow upper and a lower width.

The light-emitting device according to claim 1, wherein the elastic substrate (100) comprises a structural layer: a metal layer (191) coupled to each other and a flexible PCB layer (192), the flexible PCB layer (192) is connected to the light emitting unit (200).

6. A light emitting device according to claim 5, characterized in that the metal layer (191) and the flexible PCB layer (192) are bonded by a thermal paste (193).

7. A lighting device as claimed in claim 5, characterized in that the metal layer (191) is selected from the group consisting of aluminum sheets.

The illuminating device according to claim 1, wherein the connecting piece (130) is provided with a plurality of heat dissipating passages (190) arranged in sequence.

The illuminating device according to claim 1, wherein the illuminating unit (200) is selected to be arranged in the axial direction of the carrier sheet (120) by using a light emitting diode.

The illuminating device of the illuminating device according to any one of claims 1 to 9, characterized by further comprising:

a transparent cover (900), corresponding to the illuminating device, comprising an open surface; the illuminating device is curled in the axial direction of the carrier sheet (120), and is placed from the open surface by the end portion (140) The transparent cover (900), the light-emitting device is opened and attached to the inner wall of the transparent cover (900);

A power supply device (700) for converting the commercial power into an operating voltage of the light emitting unit (200); and a seat body (800) closed to the open surface of the transparent cover (900).