Patent Application
20080316736
This subject invention relates to body mounted lighting systems.
Body mounted lighting systems are used to provide light as people perform tasks in low light environments. Some lighting systems are head mounted, handheld, or may be mounted on a person's body. See, for example, U.S. Pat. Nos. 6,921,181, 6,095,657, 5,690,411, 5,488,361, 5,359,501, and 5,224,773; and U.S. patent application Nos. 2007/0025102, 2006/0285314, and 2006/0067077.
In today's busy times, daily tasks often cannot be completed during daylight hours. It is increasingly difficult to find daylight hours to enjoy outdoor recreational, commercial, or exercise activities. There exists a strong desire to partake in outdoor activities after nightfall or before sunrise, or to participate in any activities within a dark environment, be it indoors or outdoors.
In the past, outdoor activities had to be performed during daylight hours or were aided by handheld lighting systems, flashlights, headlamps, or environmental lights. The uses of many of these lighting methods are inefficient, cumbersome to use, or do not provide enough light to effectively accomplish the task at hand.
One problem with handheld lighting systems, such as a flashlight, is that one of the operator's hand is occupied while holding the light, making tasks that require two hands difficult to accomplish. Additionally, if using the lighting system while the operator is moving their hands, the lighted area will move as the operator's hand moves. Problems also exist with the use of headlamps. If an operator uses a headlamp the lighting system can become cumbersome for high-motion activities and too hot for comfortable usage. Additionally, providing power to a headlamp is difficult because the power source may be too heavy to mount upon the operator's head. Also, if the operator is engaged in an activity that requires motion, the light field emitted from a headlamp may move as the head moves. Furthermore, headlamps limit peripheral vision due to being mounted so close to the user's eyes. This can create an uncomfortable feeling with the operator as the field of light moves wherever the operator's head moves about the darkened environment. Another method of illuminating an area is using an environmental lighting system, such as floodlights. This method is ineffective if the operator wants to leave the lighted area.
It is not an easy proposition to employ a mobile, body mounted lighting system due to size, power, attachment, and portability constraints. Existing handheld lighting systems require the dedicated use of one hand and do not provide a stable field of light. Headlamps are useful for stationary or relatively slow moving activities but are cumbersome to wear, limit visibility to the small, lighted area directly in front of the operator, and generate heat proximate to the operator. The field of light with headlamps moves with the operator's head allowing the user to see only where their head is directed. Additionally, the power source is often too heavy to comfortably mount to the operator's head. The heat produced by headlamps can cause the housing to become hot and make the operator uncomfortable if in proximity to their head. But, headlamps and flash lights are useful if used in relatively low-motion activities or where only one hand is needed to perform the desired task. Floodlights can provide the desired level of illumination but often are not conveniently portable for mobile outdoor activities like jogging.
Applications of a relatively low profile, lightweight, compact, body mounted lighting system include walking, running, hiking, fishing, boating, kayaking, or climbing in the dark, as well as municipal, military, and general safety use.
It is therefore an object of this invention to provide a new low profile, lightweight, compact, body mounted lighting system.
It is a further object of this invention to provide such a lighting system which operates to provide a stable beam of light for an operator.
It is a further object of this invention to provide such a lighting system which operates to provide a variable beam size.
It is a further object of this invention to provide such a lighting system which allows the user to angle the light beam at different angles.
It is a further object of this invention to provide such a lighting system which has a comfortable interface with the operator's body.
It is a further object of this invention to provide such a lighting system which does not produce high heat levels.
It is a further object of this invention to provide such a lighting system which assists in ensuring the safety of the user.
The subject invention results from the realization, in part, that a novel body mounted lighting system employs a movable lens to adjust the beam size, a heat sink to keep the operator from exposure to excessive temperatures, and a pivotable body to angle the light beam.
The subject invention, however, in other embodiments, need not achieve all these objectives and the claims hereof should not be limited to structures or methods capable of achieving these objectives.
This invention features a versatile, low profile, lightweight, compact, body mounted lighting system. A housing is mountable to a person's body and an LED module resides in the housing. The LED module includes at least one LED producing a beam, a lens in front of the LED, and a mechanism configured to move the lens to adjust the distance between the lens and the LED to vary the size of the beam.
One mechanism configured to move the lens includes a lens carrier for the lens, at least one peripheral tab, and a dial rotatably mounted in the LED module including a spiral track for the tab. In one preferred embodiment, the lens is a Fresnel lens. The LED module may further include a rearward heat sink to which the LED is mounted. The heat sink is preferably constructed of a polymer body with molded rearward fins. The LED module is permitted to be pivotally mounted in the housing to adjust the angle and direction of the beam. The preferred LED module is symmetrical along a longitudinal centerline and the lighting system may further include a power cord for the LED module extending through the housing to the LED along the centerline forming a hinge between the LED module and the cage front. The lighting system power pack can be connected to the power cord and can include at least one rearwardly mounted LED.
In one example, a vest is included with a strap for mounting the housing on the person's body. A channel in the harness is for the power cord and a rearward portion has a pocket for the power pack. The housing can be attached to the body via a sternum strap carrying the housing and securable to the shoulder straps of a pack or a strap carrying the housing and securable to a belt. The vest and belt may include a rearward portion with a pocket for the power pack providing electricity to the LED module.
A low profile, lightweight, body mounted lighting system in accordance with the subject invention features a housing mountable to a person's body and a light module in the housing. The light module may include at least one light source producing a beam. A lens in front of the light source is held by a lens carrier that includes at least one peripheral tab. A dial is rotatably mounted in the light module and has a spiral track for the tab of the lens carrier. Rotation of the lens carrier adjusts the distance between the lens and the light source to vary the size of the beam output.
Other objects, features and advantages will occur to those skilled in the art from the following description of a preferred embodiment and the accompanying drawings, in which:
Aside from the preferred embodiment or embodiments disclosed below, this invention is capable of other embodiments and of being practiced or being carried out in various ways. Thus, it is to be understood that the invention is not limited in its application to the details of construction and the arrangements of components set forth in the following description or illustrated in the drawings. If only one embodiment is described herein, the claims hereof are not to be limited to that embodiment. Moreover, the claims hereof are not to be read restrictively unless there is clear and convincing evidence manifesting a certain exclusion, restriction, or disclaimer.
In one example, the LED module includes cage back 30,
LED module 14 also includes lens carrier 50. Fresnel lens 52 is seated within lens carrier 50. Lens carrier 50 includes at least one peripheral tab 54 which rides in spiral track 56 of focus dial 58. Rotation of focus dial 58 causes lens carrier 50 to move lens 52 with respect to LED 40 in order to vary the distance between lens 52 and LED 40 to change the size of the output beam. Paddles 57 included on dial 58 make the dial easy to turn. Front bezel 60 secures focus dial 58, lens carrier 50, and lens 52 within cover 41 and has lateral tracks 61 to maintain lens carrier 50 and lens 52 alignment. LED 40 may be an LED of varying wattage (e.g. 1-watt or 3-watt) or another light source. Other mechanisms for moving lens 52 to adjust the distances between lens 52 and LED 40 to vary the beam size are with the scope of the subject invention. Additionally, although a LED is described, other light sources may be used in other embodiments of the subject invention.
Housing 16,
In one example, power pack 12,
Power pack 12,
Although specific features of the invention are shown in some drawings and not in others, however, this is for convenience only as each feature may be combined with any or all of the other features in accordance with the invention. Moreover, the words “including”, “comprising”, “having”, and “with” as used herein are to be interpreted broadly and comprehensively and are not limited to any physical interconnection. Moreover, any embodiments disclosed in the subject application are not to be taken as the only possible embodiments.
In addition, any amendment presented during the prosecution of the patent application for this patent is not a disclaimer of any claim element presented in the application as filed: those skilled in the art cannot reasonably be expected to draft a claim that would literally encompass all possible equivalents, many equivalents will be unforeseeable at the time of the amendment and are beyond a fair interpretation of what is to be surrendered (if anything), the rationale underlying the amendment may bear no more than a tangential relation to many equivalents, and/or there are many other reasons the applicant can not be expected to describe certain insubstantial substitutes for any claim element amended.
Other embodiments will occur to those skilled in the art and are within the following claims.
This application claims benefit of and priority to U.S. Provisional Application Ser. No. 60/933,308 filed Jun. 6, 2007 incorporated herein by this reference.
| Number | Date | Country | |
|---|---|---|---|
| 60933308 | Jun 2007 | US |
