Lamps and displays using efficient light sources, such as light-emitting diodes (LED) light sources, for illumination are becoming increasingly popular in many different markets. LED light sources provide a number of advantages over traditional light sources, such as incandescent and fluorescent lamps. For example, LED light sources may have a lower power consumption and a longer lifetime than traditional light sources. In addition, the LED light sources may have no hazardous materials, and may provide additional specific advantages for different applications. When used for general illumination, LED light sources provide the opportunity to adjust the color (e.g., from white, to blue, to green, etc.) or the color temperature (e.g., from warm white to cool white) of the light emitted from the LED light sources to produce different lighting effects.
A multi-colored LED illumination device may have two or more different colors of LED emission devices (e.g., LED emitters) that are combined within the same package to produce light (e.g., white or near-white light). There are many different types of white light LED light sources on the market, some of which combine red, green, and blue (RGB) LED emitters; red, green, blue, and yellow (RGBY) LED emitters; phosphor-converted white and red (WR) LED emitters; red, green, blue, and white (RGBW) LED emitters, etc. By combining different colors of LED emitters within the same package, and driving the differently-colored emitters with different drive currents, these multi-colored LED illumination devices may generate white or near-white light within a wide gamut of color points or correlated color temperatures (CCTs) ranging from warm white (e.g., approximately 2600K-3700K), to neutral white (e.g., approximately 3700K-5000K) to cool white (e.g., approximately 5000K-8300K). Some multi-colored LED illumination devices also may enable the brightness (e.g., intensity or dimming level) and/or color of the illumination to be changed to a particular set point. These tunable illumination devices may all produce the same color and color rendering index (CRI) when set to a particular dimming level and chromaticity setting (e.g., color set point) on a standardized chromaticity diagram.
As described herein, a lighting device may comprise a lens having teeth extending from a rear surface of a rim of the lens and a reflector having a collar with attachment clips configured to lock the teeth in place and retain the lens in attachment to the reflector. The reflector may define cavity that extends from a first end to a second end of the reflector. The collar may be located at the second end of the reflector, such that the lens is attached to the second end of the lens. The lighting device may also comprise an emitter that is received in the first end and is configured to emit light through the lens. The attachment clips of the collar of the reflector may each comprise a clip arm that are attached to the collar at a first end and extend to a second end. The clip arm of each attachment clip may define a slot between the respective clip arm and the collar and may flex about the first end. The collar may comprise recesses between the second ends of each clip arm and respective radial surfaces of the collar. The teeth may be configured to be received in the recesses of the collar when the lens is attached to the reflector. To attach the lens to the reflector, the teeth may be inserted into the slots of the attachment clips and the lens may be rotated such the teeth are moved into the recesses of the collar.
In addition, the teeth of the lens may each comprise a ledge portion configured to contact a respective lip portion of the collar of the reflector to retain the lens in attachment to the reflector. The reflector may further comprise spring arms configured to apply force onto the lens to cause the ledge portions of the teeth of the lens to come in contact with the respective lip portions of the collar of the reflector when the lens is attached to the reflector. The application of force by the spring arms against the lens to bias the ledge portions against the lip portions may prevent the lens from rattling against the reflector and making noise when the lens is attached to the reflector.
A lighting device may include a lens, an emitter configured to emit light through the lens, and a reflector. The reflector may define a cavity that extends from a first end to a second end of the reflector. The emitter may be received in the first end of the reflector, and the lens may be attached to the second end of the reflector. The lens may include teeth that extend from a rear surface of a rim of the lens. In some examples, the teeth may be arc-shaped. The reflector may include a collar at the second end, and the collar may include attachment clips that are configured to lock the teeth in place and retain the lens in attachment to the reflector. The attachment clips may each comprise a clip arm that are attached to the collar at a first end and extend to a second end. The clip arm of each attachment clip may define a slot between the respective clip arm and the collar. The clip arm of each attachment clip may be configured to flex about the first end. In such examples, the collar may include recesses between the second ends of each clip arm and respective radial surfaces of the collar, and the teeth may be configured to be received in the recesses of the collar when the lens is attached to the reflector. Further, in some instance, in order to attach the lens to the reflector, the teeth may be inserted into the slots of the attachment clips and the lens may be rotated such the teeth are moved into the recesses of the collar.
The teeth of the lens may each include a ledge portion that is configured to contact a respective lip portion of the collar of the reflector to retain the lens in attachment to the reflector. The reflector may include spring arms that are configured to apply force onto the lens to cause the ledge portions of the teeth of the lens to come in contact with the respective lip portions of the collar of the reflector when the lens is attached to the reflector. Further, in some examples, the teeth may each include a body portion that is connected to the rear surface of the rim portion via two legs. The teeth may be configured so that there is a cavity located between the body portion and the rear surface of the rim portion. The body portion of the teeth may include a ledge portion that extends in a radial direction from an interior surface of the body portion toward a center of the rim portion. The ledge portion of the teeth may be configured to contact a rear surface the respective lip portion to secure the lip portion within a cavity that is located between the body portion and the rear surface of the rim portion.
The lighting device 100 may comprise a reflector 130 that may be located within the housing heat sink 112 of the housing 110. The reflector 130 may be configured to reflect the light emitted by the emitters 122 of the emitter circuit 124 towards the lens 115. The reflector 130 may shape the light produced by the emission LEDs within the emitter module 122 to shine out through the lens 115. The reflector 130 may be configured to sit on fins 132 inside of the housing heat sink 112 of the housing 110. The lens 115 may be connected to the reflector 130 (e.g., as will be described in greater detail below).
The lighting device 100 may further comprise a power converter circuit 140 mounted to a power printed circuit board (PCB) 142. The power converter circuit 140 may be enclosed by the inner sleeve 114 of the lighting device 100. The power converter circuit 140 may be electrically connected to the screw-in base 118, such that the power converter circuit may be configured to receive an AC mains line voltage generated by the AC power source. The power converter circuit 140 may comprise a bus connector 144 that may be electrically connected to the power PCB 142 via electrical wires 145 and may provide for electrically connection to the light-generation module 120. The power converter circuit 140 may be configured to convert the AC mains line voltage received from the AC power source into a direct-current (DC) bus voltage for powering the light-generation module 120. The power converter circuit 140 may comprise a rectifier circuit (e.g., a full-wave bridge rectifier) for converting the AC mains line voltage to a rectified voltage. The power PCB 140 may be arranged in a plane that is parallel to a plane of the emitter PCB 124 of the light-generation module 120.
The light-generation module 120 may comprise an antenna 152 electrically connected to at least one of the wireless communication circuits mounted to the control PCB 126. For example, the antenna 152 may comprise a plated wire. The antenna 152 may be electrically isolated from a control circuit on the control PCB 126. The antenna 152 may be configured to extend from the control PCB 126 through the module heat sink 125, for example, through a bore 154 in the insulator 150 (e.g., to isolate the antenna 152 from the module heat sink 125). The light-generation module 120 may be attached to the reflector 130 via fasteners (e.g., screws—not shown) that extend through openings 156 in the module heat sink 125 and openings 136 (
The reflector 130 may comprise a body portion 170 that may have a truncated conical shape and may form a cavity 172 (e.g., an optical cavity of the lighting device 100) that extends from a narrow end 174 to a wide end 176 of the body portion 170. The narrow end 174 may be referred to as a first end of the reflector 130. The wide end 176 may be referred to as a second end of the reflector 130. The emitter PCB 120 may be received within the cavity 172. For example, the emitter PCB 120 may be received in the narrow end 174 of the body portion 170 of the reflector 130. The reflector 130 may further comprise a collar 178 that extends around the reflector at the wide end 176 (e.g., an outer perimeter of the wide end 176) of the body portion 170 of the reflector 130. The collar 178 may define an outer surface 179 that defines the outer perimeter of the wide end 176.
The lens 115 may be configured to be attached to the wide end 176 of the reflector 130. The collar 178 may comprise one or more (e.g., a plurality of) attachment clips 180 configured to receive the teeth 164 of the lens 115 and attach the lens 115 to the reflector 130. The attachment clips 180 may extend from the collar in a substantially circumferential direction. The circumferential direction may be defined by the outer surface 179 of the collar 178. The attachment clips 180 may be configured to engage the teeth 164, for example, such that the lens 115 is secured to the reflector 130.
During a first step of the attachment process of the lens 115 to the reflector 130, the teeth 164 may be inserted into the slots 184 of the collar 178 (e.g., in the first assembly state as shown in
The reflector 130 may comprise biasing members 190 in the collar 178. The biasing members 190 may comprise spring arms 192 formed in respective openings 194 in the collar 178. The spring arms 192 may each be connected to the collar 178 at a first end 195 and extend to a second end 196 that is not connected to the collar 178. For example, the second end 196 of the spring arms 192 may be cantilevered from the collar 178. The biasing members 190 may each comprise a boss 198 at the second end 196 of the respective spring arm 192. The boss 198 may be a rounded knob that extends beyond a plane defined by an upper surface 177 of the collar 178. The biasing members 190 may be configured to pivot about the first end 195. When the lens 115 is installed on the reflector 130 (e.g., as shown in
This application is a continuation of U.S. patent application Ser. No. 18/214,789, filed Jun. 27, 2023, which is a continuation of U.S. patent application Ser. No. 17/647,920, filed Jan. 13, 2022, which claims the benefit of Provisional U.S. Patent Application No. 63/136,958, filed Jan. 13, 2021, the disclosures of which are incorporated herein by reference in their entirety.
Number | Date | Country | |
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63136958 | Jan 2021 | US |
Number | Date | Country | |
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Parent | 18214789 | Jun 2023 | US |
Child | 18742561 | US | |
Parent | 17647920 | Jan 2022 | US |
Child | 18214789 | US |