Building control device with a light guide configured for uniformly illuminating a graphical symbol that is visible to a user of the building control device

A building control device, comprising:

• a printed circuit board including a control circuitry for controlling at least part of the building control device;
• an LCD display operatively coupled to the printed circuit board and controlled at least in part by the control circuitry of the printed circuit board;
• a plurality of LEDs operatively coupled to the printed circuit board and controlled at least in part by the control circuitry of the printed circuit board;
• a front lens that is masked to be opaque except in one or more defined regions, wherein the one or more defined regions define:
• an LCD viewing window that is aligned with the LCD display;
• an arc-shaped window that is spaced from and extends around a periphery of at least part of the LCD viewing window;
• a light guide situated behind the front lens, the light guide configured to be illuminated by the plurality of LEDs such that light from the light guide is visible through the arc-shaped window defined by the front lens;
• an opaque plate situated between the light guide and the front lens, the opaque plate defining an at least translucent arc-shaped region that is in registration with the arc-shaped window of the front lens;
• and
• wherein the LCD display and the arc shaped window together form at least part of a user interface of the building control device for conveying information regarding operation of the building control device, wherein one or more of a color of a plurality of colors and a light intensity of a plurality of light intensities of light that is provided by the light guide and visible through the at least translucent arc-shaped region of the opaque plate indicate a current state of the building control device, a current condition of the building control device and/or a current mode of the building control device.

A building control device comprising:

• a printed circuit board including a control circuitry for controlling at least part of the building control device;
• an LCD display operatively coupled to the printed circuit board and controlled at least in part by the control circuitry of the printed circuit board;
• a plurality of LEDs operatively coupled to the printed circuit board and controlled at least in part by the control circuitry of the printed circuit board;
• a front lens that is masked to be opaque except in one or more defined regions, wherein the one or more defined regions define:
• an LCD viewing window that is aligned with the LCD display;
• and
• an arc-shaped window that is spaced from and extends around a periphery of at least part of the LCD viewing window;
• a light guide situated behind the front lens, the light guide configured to be illuminated by the plurality of LEDs;
• and
• an opaque plate situated between the light guide and the front lens, the opaque plate defining an at least translucent arc-shaped region that is in registration with the arc-shaped window of the front lens, the at least translucent arc-shaped region allowing light from the light guide to pass through the at least translucent arc-shaped region of the opaque plate and to the arc-shaped window defined by the front lens.