CN210891511U

CN210891511U - COB light source and lamps and lanterns

Info

Publication number: CN210891511U
Application number: CN201922347426.5U
Authority: CN
Inventors: 李建胜
Original assignee: Shanghai Toplite Technology Co ltd
Current assignee: Shanghai Toplite Technology Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-06-30
Anticipated expiration: 2029-12-24

Abstract

The utility model discloses a COB light source and lamps and lanterns belongs to semiconductor lighting technology field. The COB light source comprises a mirror aluminum plate; the luminous piece is arranged on the mirror aluminum plate; the circuit board, the circuit board is the shape of falling T, the circuit board sets up mirror surface aluminum plate is last, circuit board one end with the illuminating part is connected, and the other end is used for the switch on power supply, so that the illuminating part is luminous. This COB light source has following beneficial effect: because the circuit board is arranged, namely a BT material circuit layer is not required to be arranged on the surface of the mirror aluminum plate, and a layer of white oil is not required to be coated on the surface of the BT material circuit layer for reflection, the problem that nearly 20-30% of luminous flux emitted by a COB light source is absorbed by the white oil is avoided; the circuit board is arranged into a reverse T shape with a smaller size, and the reflection rate of the mirror aluminum plate is 98%; the light reflection rate is improved by nearly 20% -30%, the brightness of the COB light source irradiated in the lamp housing is greatly improved, and the brightness of light emitted by the COB light source is brighter.

Description

COB light source and lamps and lanterns

Technical Field

The utility model relates to a semiconductor lighting technology field especially relates to a COB light source and lamps and lanterns.

Background

The high-power integrated surface (COB) light source is a high-light-efficiency integrated surface light source technology for directly attaching a Light Emitting Diode (LED) Chip to an aluminum substrate, and has the characteristics of no electroplating, no reflow soldering and no surface mounting process, so that the production process is simple and the production cost is low; COB light sources have been widely used in lamps as a trend of future LED production and application.

In the current COB light source, as shown in fig. 1 and fig. 2, in order to arrange the lines, a BT material line layer 11 is required to be disposed on the surface of the aluminum substrate 10, and then a white oil layer 12 is coated on the surface of the BT material line layer 11 to reflect light. However, the light reflection rate of the white oil is only 70-80%, and the brightness emitted by the COB light source is seriously lost, so that approximately 20-30% of the luminous flux emitted by the COB light source is absorbed by the white oil, the brightness emitted by the COB light source in the lamp housing is greatly reduced, the brightness of the lamp is darker, and the normal use of the lamp is influenced.

In view of the above problems, a COB light source and a lamp are needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a COB light source can make the luminous flux loss that the COB light source sent less to improve the luminance that the COB light source shines out.

To achieve the purpose, the utility model adopts the following technical proposal:

a COB light source, comprising:

mirror aluminum plate;

the luminous piece is arranged on the mirror aluminum plate;

the circuit board, the circuit board is the shape of falling T, the circuit board sets up mirror surface aluminum plate is last, circuit board one end with the illuminating part is connected, and the other end is used for the switch on power supply, so that the illuminating part is luminous.

Preferably, the light emitting element includes an LED die and a gold wire, and the gold wire is connected to the LED die to connect the LED die.

Preferably, the LED dies are connected to each other by wire bonding machines using the gold wires.

Preferably, the light emitting element further comprises phosphor, and the phosphor is sealed at the outer side of the LED die by glue.

Preferably, the LED die in the light emitting element is fixed on the mirror-like aluminum plate by an insulating adhesive.

Preferably, the LED die is fixed to the mirror aluminum plate using a die bonder.

Preferably, the circuit board is fixed on the mirror aluminum plate through a hot pressing process.

Preferably, the luminous element is in the shape of a circular ring.

Another object of the utility model is to provide a lamp, the COB light source that it includes, the luminous flux loss that can make the COB light source send is less to improve the luminance that the COB light source shines out.

a lamp comprises the COB light source.

Preferably, the lamp further comprises a lamp housing, and the lamp housing is covered outside the COB light source.

The utility model has the advantages that:

the utility model provides a COB light source and lamps and lanterns. In the COB light source, one end of a circuit board is connected with a light-emitting piece by arranging the circuit board on a mirror aluminum plate into an inverted T shape, and the other end of the circuit board is used for switching on a power supply so that the light-emitting piece emits light; because the circuit board is arranged, namely a BT material circuit layer is not required to be arranged on the surface of the mirror aluminum plate, and correspondingly, a layer of white oil is not required to be coated on the surface of the BT material circuit layer for reflection, the problem that nearly 20-30% of luminous flux emitted by a COB light source is absorbed by the white oil is avoided; the circuit board is arranged into a reverse T shape with a smaller size, so that the surface of the mirror aluminum plate occupied by the circuit board cannot be covered, and the luminous piece cannot be shielded; meanwhile, other parts are not arranged at other positions on the mirror aluminum plate and are all mirror aluminum plates, and the reflection rate of the mirror aluminum plate is 98%; compared with the prior art, the light reflection rate of the white oil with the light reflection rate of 70-80% coated on the surface of the aluminum substrate is improved by nearly 20% -30%, the brightness of the COB light source irradiated in the lamp housing is greatly improved, and the brightness of light emitted by the COB light source is brighter.

Drawings

Fig. 1 is a schematic structural view of a COB light source in the related art;

FIG. 2 is a schematic structural diagram of an aluminum substrate in the prior art;

fig. 3 is a schematic structural diagram of the COB light source provided by the utility model.

Description of reference numerals:

10-aluminum substrate; 11-BT material line layer; 12-white oil layer;

1-a circuit board; 2-a light emitting member; 3-mirror aluminum plate.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features. Like reference numerals refer to like elements throughout the specification.

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.

In this embodiment, a COB light source is proposed to and including lamps and lanterns of this COB light source. The lamp further comprises a lamp housing, the lamp housing is covered on the outer side of the COB light source to form a complete lamp, and the light emitted by the COB light source irradiates out brightness through the lamp housing.

Specifically, as shown in fig. 3, the COB light source includes a mirror aluminum plate 3, a light emitting member 2, and a circuit board 1. Wherein, the luminous element 2 is arranged on the mirror aluminum plate 3; the circuit board 1 is the shape of falling T, and circuit board 1 sets up on mirror surface aluminum plate 3, and the one end and the illuminating part 2 of circuit board 1 are connected, and the other end is used for the switch on power to make illuminating part 2 luminous. In other embodiments, the wiring board 1 may be provided in other shapes having a smaller size.

In this embodiment, the mirror aluminum plate 3 is used as the substrate of the COB light source, on one hand, because the mirror aluminum plate 3 has a very high light reflection rate, which is 98%, the brightness of the light emitted by the light emitting element 2 is good; on the other hand, the surface of the mirror aluminum plate 3 can show a mirror effect, so that the whole COB light source is good in appearance. In this embodiment, the mirror aluminum plate 3 is aluminum 1700 AGHP. The surface of the An-Al 1700AGHP can show better mirror effect.

In the COB light source, one end of a circuit board 1 is connected with a light-emitting piece 2 by arranging the circuit board 1 on a mirror aluminum plate 3 into an inverted T shape, and the other end of the circuit board 1 is used for switching on a power supply so that the light-emitting piece 2 emits light; because the circuit board 1 is arranged, namely a layer of BT material circuit layer 11 is not required to be arranged on the surface of the mirror-surface aluminum plate 3 any more, and correspondingly, a layer of white oil is not required to be coated on the surface of the BT material circuit layer 11 for reflecting light, the problem that nearly 20-30% of luminous flux emitted by a COB light source is absorbed by the white oil is avoided.

The circuit board 1 is arranged into a reverse T shape with a smaller size, so that the surface area of the mirror aluminum plate 3 is not covered, and the luminous piece 2 is not shielded; meanwhile, other parts are not arranged at other surface positions on the mirror aluminum plate 3 and are not subjected to any other treatment, the mirror aluminum plate 3 is a naked mirror aluminum plate, and the light reflection rate of the mirror aluminum plate 3 is high by 98%; compared with the prior art that the reflection rate of white oil with the reflection rate of 70-80% coated on the surface of the aluminum substrate 10 is about 20% -30%, the brightness of light emitted by the light-emitting part 2 is better, the brightness of the light emitted by the light-emitting part 2 in the COB light source in the lamp housing is greatly improved, and the brightness of light emitted by the COB light source is brighter.

Specifically, the light emitting element 2 includes a plurality of LED dies and gold wires connecting the LED dies to form a circuit to connect the LED dies to each other. In this embodiment, a plurality of LED dies are connected to each other by a wire bonder using gold wires.

Further, the light emitting member 2 further includes phosphor powder, and the phosphor powder is sealed at the outer side of the LED die by glue to form a complete COB light source. Specifically, after uniformly mixing fluorescent powder and glue according to a certain proportion, coating the mixture on an LED crystal grain; wherein, the LED crystal grain can be coated into any shape and size according to requirements.

In this embodiment, the LED dies in the light emitting element 2 are directly fixed on the surface of the mirror aluminum plate 3 by the insulating adhesive, and then the LED dies are further fixed on the surface of the mirror aluminum plate 3 by the die bonder, so that the fixity is better. The insulating adhesive has good electrical insulating property and high viscosity at normal temperature. In this embodiment, the light emitting member 2 has a circular ring shape. The shape of the light emitting piece 2 is set to be circular, so that the COB light source is good in attractiveness. In other embodiments, the shape of the luminous element 2 may also be provided as a square.

Further, in this embodiment, the mirror aluminum plate 3 is shaped like a circular ring, and the center of the circular ring-shaped light emitting element 2 coincides with the center of the circular ring-shaped mirror aluminum plate 3. Set up mirror surface aluminum plate 3's shape into the ring shape, and coincide mutually with the centre of a circle of ring shape illuminating part 2, can make the luminosity homogeneity of illuminating part 2 on mirror surface aluminum plate 3 better, make the holistic pleasing to the eye degree of COB light source better simultaneously. In other embodiments, the mirror aluminum plate 3 may be provided in a square shape.

Specifically, in this embodiment, the wiring board 1 is fixed on the mirror-surface aluminum plate 3 by a hot-pressing process. In other embodiments, the circuit board 1 can also be directly adhered and fixed on the surface of the mirror-surface aluminum plate 3 by using glue. In this embodiment, the wiring board 1 is a flexible electrode wiring board 1. In other embodiments, the circuit board 1 may also be implemented by directly fixing two smaller-sized positive pads and negative pads on the surface of the mirror-surface aluminum plate 3 by using glue or a hot-pressing process.

The utility model provides a concrete manufacture process of COB light source as follows: firstly, the bare mirror aluminum plate 3 is cut into any required shape and size according to requirements, and in the embodiment, the bare mirror aluminum plate 3 is cut into a circular ring shape; fixing the circuit board 1 on the surface of the mirror aluminum plate 3 through a hot pressing process; then, directly fixing the LED crystal grains on the surface of the mirror aluminum plate 3 by using insulating glue; the LED crystal grains can be arranged into any shape as required.

Then, a die bonder is adopted to finish the operation of fixing the LED crystal grains, and after the operation of fixing the LED crystal grains is finished, the LED crystal grains are put into an oven to bake the glue; connecting the LED crystal grains with each other by using gold wires through a wire bonding machine; the LED crystal grains can be connected into any electronic circuit in series or in parallel according to requirements.

Finally, uniformly mixing the fluorescent powder (red powder, green powder and yellow powder) and the glue according to a certain proportion, and then coating the mixture on the LED crystal grains; wherein, the LED crystal grains can be coated into any shape and size according to requirements; and after coating, putting the coated substrate into an oven for baking to finish the whole manufacturing process of the COB light source.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims

1. A COB light source, comprising:

a mirror aluminum plate (3);

the luminous piece (2), the luminous piece (2) is arranged on the mirror aluminum plate (3);

circuit board (1), circuit board (1) is the shape of falling T, circuit board (1) sets up on mirror surface aluminum plate (3), circuit board (1) one end with illuminating part (2) are connected, and the other end is used for the switch on power supply, so that illuminating part (2) are luminous.

2. COB light source according to claim 1, characterized in that the light-emitting element (2) comprises an LED die and gold wires connecting the LED die to connect them.

3. The COB light source of claim 2 wherein the LED dies are interconnected using the gold wires by a wire bonding machine.

4. COB light source according to claim 2, characterized in that the luminescent element (2) further comprises a phosphor, which is encapsulated by glue on the outside of the LED die.

5. COB light source according to claim 2, characterized in that the LED dies in the luminous element (2) are fixed on the specular aluminum plate (3) by means of an insulating glue.

6. COB light source according to claim 5, characterized in that the LED dies are fixed to the specular aluminum plate (3) using a die bonder.

7. COB light source according to claim 1, characterised in that the circuit board (1) is fixed on the mirror aluminum plate (3) by means of a hot-pressing process.

8. COB light source according to claim 1, characterised in that the light-emitting element (2) has the shape of a circular ring.

9. A luminaire comprising a COB light source according to any of claims 1-8.

10. The lamp of claim 9, further comprising a lamp housing disposed outside the COB light source.