Illumination device

Patent metadata

Field	Value
Publication number	US-10731833-B2
Application number	US-201916529914-A
Country	US
Kind code	B2
Filing date	Aug 2, 2019
Priority date	Nov 6, 2018
Publication date	Aug 4, 2020
Grant date	Aug 4, 2020

Abstract

The present invention discloses an illumination device for an electronic device. The electronic device has a screen and a host, wherein a first lateral side of the screen is pivotally connected to the host having a keyboard surface. The illumination device includes a lampshade, a clamping portion and a light source. The clamping portion is connected to the lampshade and clamps the illumination device on a second lateral side of the screen, wherein the second lateral side is an opposite side of the first lateral side. The light source is disposed in the lampshade and provides an illuminating light, wherein a fixed angle is formed between an optical axis of the illuminating light and a keyboard surface of the host.

First claim

What is claimed is:

1. An illumination device for an electronic device having a screen and a host, wherein a first lateral side of the screen is pivotally connected to the host, the host has a keyboard surface, the illumination device comprising:
a lampshade having an illuminating surface;
a clamping portion connected to the lampshade and clamping the illumination device on a second lateral side of the screen, wherein the second lateral side is an opposite side of the first lateral side;
a light source disposed in the lampshade and providing an illuminating light having an optical axis, wherein a fixed angle is formed between the optical axis of the illuminating light and the keyboard surface; and
a rotation portion connecting the clamping portion and the lampshade, wherein when an angle between the screen and the host changes, the rotation portion allows an angle between the lampshade and the clamping portion to be adjusted, such that when the illuminating surface is substantially parallel to the keyboard surface, the fixed angle between the optical axis and the keyboard surface can be maintained.

2. The illumination device according to claim 1 , wherein the fixed angle is between 25°˜35°.

3. The illumination device according to claim 1 , wherein the rotation portion allows the angle between the lampshade and the clamping portion to be adjusted by 0°˜52°, and when the illuminating surface is substantially parallel to the keyboard surface, the illuminating light mainly irradiates on a region outside the keyboard surface.

4. The illumination device according to claim 1 , wherein the angle between the screen and the host changes between 90°˜125°.

5. The illumination device according to claim 1 , wherein the lampshade has a first side portion, a second side portion and a bottom portion, the light source is disposed on the first side portion, and a length of the second side portion is larger than or equivalent to a length of the first side portion.

6. The illumination device according to claim 1 , wherein the lampshade has a first side portion, a second side portion and a bottom portion, a connection line connecting an edge of the first side portion with an edge of the second side portion is substantially parallel to the keyboard surface.

7. The illumination device according to claim 1 , further comprising:
an inclination sensor disposed in the lampshade and sensing whether the illuminating surface is substantially parallel to the keyboard surface.

8. The illumination device according to claim 7 , wherein the inclination sensor is a leveling instrument, the lampshade further comprises an indicator lamp, and the indicator lamp is turned on when the illuminating surface is substantially parallel to the keyboard surface.

9. The illumination device according to claim 7 , wherein the light source flashes for several times when the illuminating surface is substantially parallel to the keyboard surface.

10. The illumination device according to claim 1 , further comprising:
an optical lens disposed in the lampshade and changing a beam angle of the illuminating light.

11. The illumination device according to claim 10 , wherein the optical lens is a total internal reflection (TIR) lens with strip shape.

12. The illumination device according to claim 10 , wherein the beam angle of the illuminating light changes between 20°˜30°.

13. The illumination device according to claim 1 , further comprising:
an user interface disposed on the lampshade for providing at least one function pattern, the least one function pattern corresponding to one of the functions including brightness adjustment, color temperature adjustment, power switching and automatic dimming.

14. The illumination device according to claim 1 , further comprising:
a light sensor disposed on the lampshade and sensing an ambient brightness.

15. The illumination device according to claim 1 , wherein the illumination device is electrically connected to the electronic device, an application program of the electronic device controls an on/off state of the light source, a luminous intensity or a color temperature of the illuminating light of the light source, or execute an automatic dimming function.

Assignees

• Qisda Corp

Inventors

• Tsai Chang-Yu

Classifications

• G06F1/1633

  Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626 · CPC title

• F21V21/088 Primary

  Clips; Clamps · CPC title

• F21V14/02

  by movement of light sources {(in vehicle head lamps F21S41/657)} · CPC title

• F21V5/04

  of lens shape · CPC title

• F21V33/0052

  Audio or video equipment, e.g. televisions, telephones, cameras or computers; Remote control devices therefor · CPC title