阅读说明：本技术 发光模块 (Light emitting module ) 是由 范顺彪 于 2020-03-27 设计创作，主要内容包括：本发明提供一种发光模块,包括电路板、发光元件、导光片以及壳体。发光元件设置于电路板上,以产生光束。导光片设置于电路板上且接近于发光元件,以引导光束。壳体覆盖电路板、发光元件以及导光片,包括本体、图案部以及容纳槽。容纳槽接近于图案部且显露于本体之外,以容纳发光元件于其中。(The invention provides a light-emitting module which comprises a circuit board, a light-emitting element, a light guide sheet and a shell. The light-emitting element is arranged on the circuit board to generate a light beam. The light guide plate is arranged on the circuit board and close to the light emitting element to guide the light beam. The shell covers the circuit board, the light-emitting element and the light guide sheet and comprises a body, a pattern part and an accommodating groove. The accommodating groove is close to the pattern part and exposed outside the body so as to accommodate the light-emitting element therein.)

1. A light emitting module comprising:

a circuit board;

a light emitting element arranged on the circuit board for generating a light beam;

a light guide plate disposed on the circuit board and close to the light emitting element for guiding the light beam and changing the traveling direction of the light beam; and

a casing, cover this circuit board, this light emitting component and this leaded light piece, this casing includes:

a body;

a pattern part formed on the body; and

a first accommodating groove which is close to the pattern part and exposed on a lower surface of the body for accommodating the light-emitting element therein; when the light emitting element generates the light beam, the light beam passes through the light guide sheet and is projected to the pattern part so as to display a light emitting pattern corresponding to the pattern part.

2. The light emitting module of claim 1, wherein the pattern portion is formed on the housing by a transparent material, and the body is made of a plastic material; wherein, the body and the pattern part form the shell through a two-material injection technology.

3. The light emitting module of claim 1, wherein the pattern portion has a second receiving groove exposed at a lower surface of the pattern portion for receiving the light guide plate therein.

4. The light emitting module of claim 1, wherein the housing further comprises a protective film covering an upper surface of the body for shielding the pattern portion from being exposed outside the housing.

5. The light emitting module of claim 1, wherein the protective film has a thickness of 8 to 15 micrometers.

6. A light emitting module comprising:

a circuit board;

a light emitting element arranged on the circuit board for generating a light beam;

a light guide plate disposed on the circuit board and close to the light emitting element for guiding the light beam and changing the traveling direction of the light beam; and

a casing, cover this circuit board, this light emitting component and this leaded light piece, this casing includes:

a body; and

the pattern part is formed on the body and provided with a first accommodating groove which is exposed on the lower surface of the pattern part and is used for accommodating the light guide sheet; when the light emitting element generates the light beam, the light beam passes through the light guide sheet and is projected to the pattern part so as to display a light emitting pattern corresponding to the pattern part.

7. The light emitting module of claim 6, wherein the pattern portion is formed on the housing by a transparent material, and the body is made of a plastic material; wherein, the body and the pattern part form the shell through a two-material injection technology.

8. The light-emitting module of claim 6, wherein the housing further comprises a second receiving groove exposed at a lower surface of the body near the pattern portion for receiving the light-emitting element therein.

9. The light emitting module of claim 6, wherein the housing further comprises a protective film covering an upper surface of the body for shielding the pattern portion from being exposed outside the housing.

10. The light emitting module of claim 6, wherein the protective film has a thickness of 8 to 15 micrometers.

Technical Field

The present invention relates to a light emitting module, and more particularly, to a light emitting module capable of displaying a light emitting pattern.

Background

Generally, the electronic device is printed with label characters or label patterns on the housing for the consumer to recognize. In recent years, the electronic device is provided with the light-emitting module in the shell, so that the house label characters or house label patterns displayed on the shell can be presented with a light-emitting effect, and consumers can still clearly watch the house label characters or house label patterns by naked eyes even at night or in a dark environment. The light-emitting module is not limited to be applied to a housing of an electronic device, but can also be applied to specific function keys, such as: the play key of the sound device is provided with play patterns. When the play key is pressed, the light-emitting module inside the play key operates to make the play pattern on the play key emit light, and the sound device starts to play music. On the contrary, when the play key is not pressed, the light emitting module inside the play key does not operate, and the play pattern on the play key does not emit light.

Generally, the following methods are adopted on the housing of the conventional electronic device: the transparent plastic part is added with a small amount of black pigment to form a partial black semitransparent shell, and the back of the shell is sprayed with the black pigment. Then, laser engraving is performed on the back surface of the shell, and a required playing pattern can be set on the shell. Finally, only a Light Emitting Diode (LED) and a circuit board are needed to be arranged, so that the LED generates light beams, and the light beams are projected to the playing patterns, so that the playing patterns can emit light.

However, in the above-mentioned method, when the light emitting diode does not generate a light beam, the user can visually observe the trace of the played pattern on the housing. Most users find such an appearance aesthetically unacceptable. Therefore, a light emitting module with an attractive appearance is needed.

Disclosure of Invention

The invention aims to provide a light-emitting module with attractive appearance.

In a preferred embodiment, the present invention provides a light emitting module, which includes a circuit board, a light emitting device, a light guide plate and a housing. The light-emitting element is arranged on the circuit board and used for generating a light beam. The light guide sheet is arranged on the circuit board and close to the light emitting element, and is used for guiding the light beam and changing the advancing direction of the light beam. The shell covers the circuit board, the light-emitting element and the light guide sheet, and comprises a body, a pattern part and a first accommodating groove. The pattern part is formed on the body, and the first accommodating groove is close to the pattern part and exposed on a lower surface of the body and used for accommodating the light-emitting element therein; when the light emitting element generates the light beam, the light beam passes through the light guide sheet and is projected to the pattern part so as to display a light emitting pattern corresponding to the pattern part.

In a preferred embodiment, the present invention further provides a light emitting module, which includes a circuit board, a light emitting element, a light guide plate and a housing. The light-emitting element is arranged on the circuit board and used for generating a light beam. The light guide sheet is arranged on the circuit board and close to the light emitting element, and is used for guiding the light beam and changing the advancing direction of the light beam. The shell covers the circuit board, the light emitting element and the light guide sheet, and comprises a body and a pattern part. The pattern part is formed on the body and provided with a first accommodating groove which is exposed on the lower surface of the pattern part and is used for accommodating the light guide sheet; when the light emitting element generates the light beam, the light beam passes through the light guide sheet and is projected to the pattern part so as to display a light emitting pattern corresponding to the pattern part.

In summary, the housing of the light emitting module of the present invention is formed by a dual material injection technique using the pattern portion of the transparent material and the body of the dark plastic material, and a protective film is formed by the transparent paint coated on the housing, so that the plurality of pattern portions are not exposed outside the housing when the light emitting element does not generate light beams. Furthermore, the light-emitting module is further provided with a first accommodating groove on the shell to accommodate the corresponding light-emitting element therein, and the pattern part is provided with a second accommodating groove to accommodate the corresponding light guide sheet therein, so that the thickness of the light-emitting module can be reduced, and the light-emitting module can be applied to light and thin electronic devices.

Drawings

Fig. 1 is an exploded view of a light emitting module according to a preferred embodiment of the invention.

Fig. 2 is a schematic structural view of another view angle of the housing of the light emitting module in the preferred embodiment of the invention.

Fig. 3 is a schematic cross-sectional view of a light emitting module according to a preferred embodiment of the invention.

The reference numbers are as follows:

1 … luminous module

11 … circuit board

12 … light-emitting element

13 … light guide sheet

14 … casing

141 … body

142 … pattern part

143 … first accommodating groove

1421 … second receiving groove

T1 … first thickness

T2 … second thickness

Detailed Description

In view of the problems caused by the prior art, the present invention provides a light emitting module capable of solving the problems of the prior art. Embodiments of the invention will be further explained by the following in conjunction with the associated drawings. In the drawings, the shape and size may be exaggerated for simplicity and convenience. It is to be understood that elements not specifically shown in the drawings or described in the specification are of a type well known to those of ordinary skill in the art. Various changes and modifications can be made by one skilled in the art in light of the above teachings.

First, a structure of a light emitting module of the present invention is described, please refer to fig. 1 and fig. 2 together, in which fig. 1 is an exploded view of a light emitting module of the present invention in a preferred embodiment, and fig. 2 is a schematic view of a housing of the light emitting module of the present invention in another view angle in a preferred embodiment. The light emitting module 1 includes a circuit board 11, a plurality of light emitting elements 12, a plurality of light guide sheets 13, and a housing 14. The plurality of light emitting elements are respectively disposed on the upper surface of the circuit board 11, and function to be driven to respectively generate light beams. Each light guide plate 13 corresponds to one light emitting element 12, and the light guide plates 13 are respectively disposed on the circuit board 11 and close to the light outlet of the corresponding light emitting element 12. The light guide plate 13 functions to guide the light beam projected into the interior thereof and to change the traveling direction of the light beam so that the light beam can travel toward the housing.

The housing 14 covers the circuit board 11, the light emitting elements 12, and the light guide sheets 13, wherein the housing 14 is attached to the circuit board 11, the light emitting elements 12, and the light guide sheets 13 by a double-sided adhesive tape. The housing 14 includes a body 141, a plurality of pattern portions 142, and a plurality of first receiving grooves 143. Each first receiving groove 143 corresponds to one light emitting device 12 and one pattern portion 142, is close to the corresponding pattern portion 142 and exposed on the lower surface of the body 141, and can receive the corresponding light emitting device 12 therein. The plurality of pattern parts 142 are respectively formed on the body 141, and each pattern part 142 has a second receiving groove 1421, and each second receiving groove 1421 corresponds to one light guide sheet 13. The second receiving grooves 1421 are respectively exposed at the lower surfaces of the corresponding pattern portions 142 to receive the corresponding light guide sheets 13 therein. In the preferred embodiment, the light emitting device 12 is a micro light emitting diode, and the circuit board 11 is a Printed Circuit Board (PCB), which is used for illustration only and not for limitation.

The structure of the light emitting module 1 in which the respective elements are combined is shown in fig. 3. With such a structure, when the light emitting elements 12 respectively generate light beams, the light beams respectively pass through the corresponding light guide sheets 13 and are projected to the corresponding pattern portions 142, so as to display the light emitting patterns corresponding to the pattern portions 142.

First, the pattern part 142 is formed on the housing 14 by a transparent material, and the main body 141 is made of a dark (generally black) plastic material. The body 141 and the pattern portion 142 form the housing 14 by a two-shot injection technique. Second, the housing 14 further includes a transparent paint covering the upper surface of the body 141 to form a protective film (not shown) that can shield the plurality of pattern portions 142 and prevent the plurality of pattern portions 142 from being exposed outside the housing 14. Thus, when the light emitting element 12 does not generate a light beam, the user does not visually recognize the trace of the plurality of pattern portions 142.

Thirdly, in order to apply the light emitting module 1 of the present invention to an electronic device with a smaller volume, besides the design of the first receiving groove 143 and the second receiving groove 1421, the present invention further adopts various thin designs, such as: the thickness of the protective film covering the body 141 is about 8 to 15 microns, the thickness of the circuit board 11 is about 0.3 to 0.8 microns, and the thickness of the light guide sheet 13 is about 0.2 to 0.3 microns. Thus, the thickest part of the light emitting module 1 of the present invention is the first thickness T1, which is approximately equal to 2.35 microns, and the thinnest part of the light emitting module 1 is the second thickness T2, which is approximately equal to 1.95 microns. The above data are for illustrative purposes only and are not limited thereto. Fourth, the light guide plate 13 is provided with a plurality of micro holes (not shown), and the diameter of the micro holes is about 0.06 μm, so that the light beams traveling inside the light guide plate can be uniformly diffused.

According to the above, the housing of the light emitting module of the invention is formed by the two-material injection technology using the pattern portion of the transparent material and the body of the dark plastic material, and the protective film is formed by the transparent paint coated on the housing, so that the effect that the plurality of pattern portions are not exposed outside the housing when the light emitting element does not generate light beams can be achieved. Furthermore, the light-emitting module is further provided with a first accommodating groove on the shell to accommodate the corresponding light-emitting element therein, and the pattern part is provided with a second accommodating groove to accommodate the corresponding light guide sheet therein, so that the thickness of the light-emitting module can be reduced, and the light-emitting module can be applied to light and thin electronic devices.

The above-mentioned embodiments are merely preferred embodiments of the present invention, which are not intended to limit the scope of the present invention, and therefore, all equivalent changes and modifications that do not depart from the spirit of the present invention are intended to be included within the scope of the present invention.