Domestic appliance with an integral transparent or translucent wall portion

• US 8,425,066 B2
• Filed: 02/06/2009
• Issued: 04/23/2013
• Est. Priority Date: 02/15/2008
• Status: Active Grant

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Zeinstra, Michiel
• Primary Examiner(s): Ward, John A
• Application Number:
  US12/866,746
• Publication Number:
  US 20100321922A1
• Time in Patent Office: 1,537 Days
• Field of Search: 362/89, 362/351, 362/355, 362/244, 362/247, 362/248, 362/227
• US Class Current: 362/89
• CPC Class Codes: G09F 13/04 Signs, boards or panels, illuminated from behind the insignia

Abstract

A domestic appliance (1) includes a housing or wall (6) and a wall portion (8). The portion is an integral part of the housing (6). The appliance has a display means (2) comprising a light source (10), a mask (2) and a diffuser (4). The housing (6) may be smoothly shaped to obtain an appealing design. A separate or standardized display may be perceived as a disruption of a smooth design of the appliance. To incorporate the display means (20) into the design the integral wall portion (8) is transparent and positioned between the diffuser (4) and the mask (2). An inner face of the wall portion (8) is directed to the mask (2). An outer face of the wall portion (8) is directed to the diffuser (4). A diffusing layer (32) included in the diffuser (4) is provided on the outer face of the integral wall portion (8).

Claims

1. A domestic appliance comprising:

a wall portion that is an integral part of a structure of the domestic appliance; and

a display means comprising a light source, a mask having a mask hole, and a diffuser for diffusing light emitted by the light source through the mask hole,

wherein the wall portion of the domestic appliance is (i) translucent or transparent for light of the light source and (ii) positioned between the diffuser and the mask, wherein the wall portion has an inner face directed to the mask and an outer face directed to the diffuser, wherein the diffuser comprises a diffusing layer provided on the outer face of the wall portion, and wherein the mask, via the mask hole, blocks part of the light emitted by the light source while another part of the light emitted by the light source passes through the mask.

2. The domestic appliance according to claim 1, wherein the diffusing layer is a lacquering layer.

3. The domestic appliance according to claim 1, wherein one or more refraction elements are provided on the inner face of the wall portion.

4. A domestic appliance according to claim 3, wherein the wall portion includes the one or more refraction elements.

5. The domestic appliance according to claim 3, wherein the one or more refraction elements are arranged to propagate light emitted by the light source into a bundle which is transmitted by the wall portion, the bundle being perpendicular to the diffuser.

6. The domestic appliance according to claim 1, wherein the mask is positioned against the inner face of the wall portion.

7. The domestic appliance according to claim 1, wherein the mask has slanted surfaces to reflect light emitted by the light source away from the wall portion.

8. The domestic appliance according to claim 1, wherein the mask has light absorbing properties on side walls of the mask hole of the mask.

9. The domestic appliance according to claim 1, wherein the domestic appliance is a wake-up system for awaking a person by increasing light intensity.

10. The domestic appliance as claimed in claim 1, wherein the wall portion is part of a main housing of the appliance and wherein the diffusing layer completely covers the entire outer surface of the main housing.

11. A domestic appliance comprising:

a wall portion that is an integral part of a structure of the domestic appliance; and

a display means comprising a light source, a mask, and a diffuser for diffusing light emitted by the light source, wherein the wall portion of the domestic appliance is translucent or transparent for light of the light source and positioned between the diffuser and the mask, wherein the wall portion has an inner face directed to the mask and an outer face directed to the diffuser, wherein the diffuser comprises a diffusing layer provided on the outer face of the integral wall portion, and wherein a diaphragm is positioned between the mask and the wall portion.

12. The domestic appliance according to claim 11, wherein the diaphragm comprises a foil attached to the wall portion.

13. The domestic appliance according to claim 12, wherein the foil has printed segments or symbols.

14. The domestic appliance according to claim 11, wherein the diaphragm is printed on the inner face of the wall portion.

15. The domestic appliance according to claim 11, wherein the diaphragm is included in the mask.

16. The domestic appliance according to claim 11, wherein the mask has slanted surfaces to reflect light emitted by the light source away from the wall portion.

17. The domestic appliance according to claim 11, wherein the mask has light absorbing properties on side walls of the mask.

18. The domestic appliance according to claim 11, wherein the domestic appliance is a wake-up system for awaking a person by increasing light intensity.

19. The domestic appliance as claimed in claim 11, wherein the wall portion is part of a main housing of the appliance and wherein the diffusing layer completely covers the entire outer surface of the main housing.

20. The domestic appliance according to claim 11, wherein one or more refraction elements are provided on the inner face of the wall portion.