Non-UV antimicrobial LED container systems for food, cannabis, and healthcare applications

Abstract

An antimicrobial illumination system utilizes non- ultraviolet (non-UV) visible light, centered around 405 nm, to inhibit bacteria, fungi, mold, and yeast on stored food, cannabis, and healthcare products. Metal-clad printed circuit boards (MCPCBs ) of various geometries embed the LEDs and are integrated into lids, countertops, tabletops, and storage enclosures. The system provides continuous or intermittent antimicrobial illumination that is safe in occupied environments and preserves product quality without UV-induced degradation.The MCPCB integrates antimicrobial functionality, structural support, and thermal management in a single unit suitable for food, cannabis, and healthcare storage, as well as cosmetic and therapeutic uses.

Description

Docket No.: 767-006 PCTNON-UV ANTIMICROBIAL LED CONTAINER SYSTEMS FOR FOOD,CANNABIS, AND HEALTHCARE APPLICATIONS Background of the InventionReference to Prior ApplicationThis application claims priority of the provisional patent application 63 / 719, 328, filed November 12, 2024 entitled NON-UV ANTIMICROBIAL LED LID FOR FOOD, CANNABIS AND HEALTHCARE by Fazle Quazi and Labina Tasfia.Field of the Invention

[0001] The present invention relates generally to antimicrobial illumination systems using visible light, and more particularly to container lids, tabletops, and storage surfaces incorporating 405 nm violet-blue LED light sources on metal-clad printed circuit boards (MCPCBs). The invention addresses microbial inhibition in foods, cannabis, and healthcare environments without relying on ultraviolet (UV) radiation. The invention further relates to methods for enhancing the activity of antioxidant or analgesic essential oils through controlled exposure to non-UV visible light.Description of the Prior Art

[0002] Microbial contamination of foods, cannabis, and healthcare products presents persistent safety and quality challenges. Common contaminants include E. coli, Salmonella, and molds that cause spoilage and health hazards. Conventional sterilization methods, such as UV light, may eliminate microorganisms but degrade flavor and potency, embrittle materials, and pose health risks to humans.

[0003] Cannabis producers face mold and yeast contamination leading to recalls, while food manufacturers contend with spoilage and foodborne illness. There is a need for an economical, safe, energy-efficient antimicrobial solution that can operate in occupied environments.Docket No.: 767-006 PCT

[0004] Studies show LEDs centered around 405 nm generate reactive oxygen species (ROS) in microbial cells, leading to microbial inactivation, while preserving food quality. The inventors have discovered that embedding 405 nm LEDs directly into MCPCBs mounted within container lids or surfaces provides an efficient, modular, and safe antimicrobial system. Unlike prior UV sterilizers or overhead 405 nm fixtures, the present invention integrates the light source into storage or surface hardware for compact, multi-purpose protection.Summary of the Invention

[0005] The primary obj ective is to provide a non-UV antimicrobial LED container system that inhibits bacterial, fungal, and yeast growth while preserving sensory and chemical quality of foods, cannabis, and related products. The invention comprises a lid or surface assembly incorporating one or more MCPCBs populated with 405 nm LEDs, optionally combined with 415 nm blue, 660 nm deep red, and 850 nm infrared LEDs. The MCPCB acts simultaneously as a heat sink, structural support, and illumination platform.

[0006] Key Aspects and Advantages

[0007] Non-UV Antimicrobial Action - LEDs within 400- 420 nm produce ROS in microbial cells that inhibit bacteria, fungi, and yeast. Visible spectrum operation is safe in occupied environments and does not degrade food flavor or cannabis potency.

[0008] Multifunctional Construction - The MCPCB serves as structural substrate, thermal heat sink, and illumination platform, minimizing components and improving thermal dissipation.

[0009] Encapsulation and Durability - Optical-grade silicone encapsulation or conformal coating or plastic coverDocket No.: 767-006 PCTprotects LEDs and wiring from dust, moisture, and handling stress while maintaining high transmission.Design Versatility - LED lids and panels may be circular, rectangular, or oval to fit Mason jars, cooking pots, bread boxes, storage totes, freezers, cosmetic boxes, undercabinets, foldable and non-foldable tabletops, storage and shoe cabinets.

[0010] Smart Control and Energy Efficiency - Operates from low-voltage DC (below 48 VDC) via DC jacks, waterproof connectors, or USB. Can be powered by wall adapters, batteries, or directly by solar panels ranging from 2 V to 48 V, eliminating intermediate conversion circuits. The internal LED driver may incorporate a wide-input DC-DC converter or current-limiting stage to regulate current across this range. Because antimicrobial, therapeutic, and storage functions typically require only a few hours per day, exclusive solar or solar-battery operation is feasible, enabling remote / off-grid use and sustainability.

[0011] Broad Application Range - Incorporates into kitchen countertops, catering trays, hospital storage units, cosmetic stations, and portable therapy devices; solar- powered versions enable f ield / disaster-relief use.

[0012] This invention introduces a durable, modular, and smart antimicrobial solution applicable across domestic, commercial, and healthcare settings. While exemplifying features and embodiments are discussed, modifications, permutations, additions, and sub-combinations will be apparent to those skilled in the art. No limitation with respect to specific embodiments is intended or should be inferred.

[0013] The basic embodiment of the present invention teaches an antimicrobial container system, comprising: aDocket No.: 767-006 PCTcontainer body having an opening; a lid or cover configured to engage the opening of the container body; a metal-clad printed circuit board (MCPCB ) integrated into or forming at least a portion of the lid or cover; and a plurality of nonultraviolet light-emitting diode (LED) chips mounted on the MCPCB, the LEDs being configured to emit visible light having a dominant wavelength between 400 nm and 420 nm to inhibit bacterial, fungal, and yeast growth on items contained within the container, wherein the MCPCB functions as both a structural member and a heat sink for the LEDs, and wherein the lid or cover is further configured to operate from a low- voltage direct-current power source including at least one of: (a ) a wall power adapter; (b) a rechargeable battery; or ( c) a solar-panel input between 2 V and 48 V coupled directly to an internal driver circuit that regulates current to the LEDs.

[0014] The above embodiment can be further modified by defining that the MCPCB is aluminum or another thermally conductive metal having a thickness between about 0. 05 inch and 0. 10 inch.

[0015] The above embodiment can be further modified by defining that the MCPCB and LEDs are encapsulated within optical-grade silicone to provide dust and moisture resistance and to increase mechanical durability.

[0016] The above embodiment can be further modified by defining that the lid or cover has a circular, rectangular, or oval configuration adapted to fit a container selected from the group consisting of Mason j ars, cooking pots, bread boxes, food storage totes, cosmetic boxes, and shoe cabinets.

[0017] The above embodiment can be further modif ied by defining that the system further comprises an electronic control module configured to operate the LEDs in at least oneDocket No.: 767-006 PCTof: (a) continuous illumination; (b) pulsed DC operation having a duty cycle between 10% and 90%; or (c) periodic timed operation for a predetermined number of hours per day.

[0018] The above embodiment can be further modified by defining that the control module includes a Wi-Fi or Bluetooth transceiver and is configured to communicate with a mobile or web application for remote operation and scheduling.

[0019] The above embodiment can be further modified by defining that the LEDs further comprise at least one additional wavelength selected from the group consisting of 415 nm blue light and 850 nm infrared light for combined antimicrobial and photobiomodulation effects.

[0020] The above embodiment can be further modified by defining that the internal driver circuit includes a wide-input DC-DC converter or current-limiting stage configured to accommodate voltage variations from photovoltaic modules without damage to the LEDs.

[0021] The above embodiment can be further modified by defining that the antimicrobial illumination is configured for operation for less than four hours per day to achieve mold inhibition while minimizing energy consumption, thereby enabling exclusive solar-powered operation.

[0022] The above embodiment can be further modified by defining that the lid or cover is detachably connected to the container body to enable use of the lid as a portable antimicrobial or therapeutic illumination device.

[0023] The above embodiment can be further modified by defining that the container system is integrated into a tabletop, countertop, cabinet, or shelving unit, and multiple MCPCB modules are connected in a daisy-chain configuration using waterproof connectors.Docket No.: 767-006 PCT

[0024] The above embodiment can be further modified by defining that the antimicrobial and therapeutic illumination system is adapted for off-grid, portable, or disaster-relief use powered exclusively by solar energy.

[0025] The above embodiment can be further modified by defining that the antimicrobial illumination is applied to food, cannabis, or healthcare products to extend shelf life and maintain organoleptic quality without exposure to ultraviolet radiation.

[0026] The above embodiment can be further modified by defining that the LEDs further comprise 660 nm deep red emitters configured to provide photobiomodulation and quality-preservation effects.

[0027] The above embodiment can be further modified by defining that the MCPCBA is integrated into a folding-table configuration having foldable legs and a top surface formed by the MCPCBA, the LEDs being mounted on an underside of the top surface to deliver therapeutic illumination to a user' s lower extremities.

[0028] An alternate embodiment of the instant invention teaches a method for enhancing the therapeutic activity of an essential oil, comprising: topically applying an antioxidant-rich or analgesic essential oil to a portion of skin; and exposing the treated area to non-ultraviolet visible light emitted from at least one LED having a dominant wavelength between 400 nm and 420 nm, wherein the exposure generates a controlled level of reactive oxygen species (ROS ) that activate antioxidant or anti-inflammatory biochemical pathways in the skin, thereby enhancing the therapeutic effect of the applied essential oil.

[0029] The above embodiment can be further modified by defining that the essential oil comprises cannabidiol (CBD)Docket No.: 767-006 PCToil, clove oil, or a phenolic or terpene -containing formulation.

[0030] The above embodiment can be further modified by defining that wherein the essential oil includes a photosensitizing compound configured to absorb visible light and transfer energy to oxygen molecules, thereby producing reactive oxygen species that augment the therapeutic response.

[0031] The above embodiment can be further modified by defining that the illumination is provided sequentially or concurrently by LEDs emitting at 405 nm, 415 nm, and 850 nm to achieve differential tissue penetration depths and biochemical responses.BRIEF DESCRIPTION OF THE DRAWINGS

[0032] For a better understanding of the present invention, reference is to be made to the accompanying drawings. It is to be understood that the present invention is not limited to the precise arrangement shown in the drawings.

[0033] FIG. 1 (prior art) is a glass storage jar 101 and lid 102.

[0034] FIG. 2 (prior art) is an antimicrobial LED chip 201 on a star-type heat sink 202.

[0035] FIG. 3 (prior art) is a DC female power jack 301; mounting thread 302; mounting nut 303; positive solder terminal 304; and negative solder terminal 305.

[0036] FIG. 4 (prior art) is a waterproof cable gland; 401 top view and 402 side view.

[0037] FIG. 5 is a schematic for five LED chips of FIG.2 in series; positive terminal is 501 and negative terminal is 502.Docket No.: 767-006 PCT

[0038] FIG. 6 embodiment represents the five LEDs of FIG. 2, connected in series as shown in the schematic of FIG.5; mounted on the inside surface of the lid 101 of FIG. l.301 is a DC jack 301 as shown in FIG. 3.

[0039] FIG. 7 is a schematic for twelve antimicrobial LED chips connected in a series-parallel combination; positive terminal 701 and negative terminal 702.

[0040] FIG. 8 is a round metal clad printed circuit board assembly (MCPCBA) 801 containing the LEDs of FIG. 7; DC-j ack hole 802; LED 803; screw holes 804; positive connection solder pad 805; negative connection solder pad 806.

[0041] FIG. 9 is a top view 901 of the lid 102 of FIG.1 fitted with the MCPCBA of FIG. 7; DC-j ack hole 902; mounting screws 903.

[0042] FIG. 10 is a side view of the lid 901 of FIG. 9; mounting screws 903, 1004 female DC j ack (of the type shown in FIG. 3); 1005 mounting nut securing the DC jack to the MCPCBA; 1002 negative solder terminal and 1003 positive solder terminal.

[0043] FIG. 11 is the side view 1101 (of the lid shown in FIG. 10) with silicone cover 1102 over DC jack 1004.

[0044] FIG. 12 represents the lid 1201 (of the lid shown in FIG. 11) with silicone mold 1202 over LED chips and DC jack.

[0045] FIG. 13 represents a DC power supply 1301; male DC plug 1302 delivering power to an LED array.

[0046] FIG. 14 represents the top view 1401 (of the silicone-molded lid 1201 of FIG. 12 ); 1302 male DC plug of the LED driver 1301 is inserted into the female DC jack of the lid 1004 of FIG. 10.Docket No.: 767-006 PCT

[0047] FIG. 15 represent s l id 1401 of FIG 14 and LED driver 1402 of FIG. 14 threaded into storage j ar 101 of FIG.1.

[0048] FIG. 16 represent s a two-part l id system, a f lat metal l id 1601 and screw band 1602; the f lat l id may be made of an MCPCBA 801 of FIG. 8 or an aluminum plate with attached MCPCBA.

[0049] FIG. 17 is an exploded view cons i sts of the screw band 1602 and the lid 1601 of FIG. 16; a vacuum gas ket 1701 and the j ar 101 of Fig. l.

[0050] FIG. 18 is a schematic for forty-four ant imicrobial LED chips connected in a series-paral lel combinat ion; pos it ive terminal 1802 and negative terminal 1803.

[0051] FIG. 19a i s a round MCPCBA 1901 for 44 LEDs of FIG. 18; DC j ack 301 of Fig. 3 and a handle hole 1902.

[0052] FIG. 19b represents s ilicone mold 1903 over LEDs, DC j ack and handle bolt of FIG. 19a, and a mount ing nut ( not shown ).

[0053] FIG. 20 i s a top view 2001 of the MCPCBA of FIG.19b represent ing a utens il pot cover 2001; LED driver 2002 i s for the forty- four LEDs of FIG. 18; 2003 cover handle.

[0054] FIG. 21 represent s a utens i l pot 2101 f itted with cover 2001 of FIG. 20.

[0055] FIG. 22 repre sent s a fruit bowl 2201 f itted with cover 2001 of FIG. 20.

[0056] FIG. 23 i s a schemat ic for eighty- four ant imicrobia l LED chips connected in a series-paral lel combination; pos it ive terminal 2302 and negat ive terminal 2303.Docket No.: 767-006 PCT

[0057] FIG. 24 is a rectangular MCPCBA 2401 for 84 LEDs of FIG. 23; female DC jack 301 of FIG. 3; screw hole 2404; positive terminal 2402 and negative terminal 2403.

[0058] FIG. 25 represents the MCPCBA 2401 of FIG. 24 fitted with DC-jack cover 2501.

[0059] FIG. 26 represents a silicone mold 2601 over LEDs, DC jack of FIG. 25; 2602 is space without mold, on all 4 sides.

[0060] FIG. 27 represents 2701 storage tote2701; the MCPCBA 2601 of FIG. 26; opening 2706 larger than silicone- mold area of 2602 of FIG. 26; when MCPCBA 2601 is placed on tote 2701, its mounting holes align with tote holes 2705; the DC female jack 301 of FIG. 3.

[0061] FIG. 28 represents an assembled tote 2801 with MCPCBA 2601; 2802 LED driver for the LEDS of FIG. 23; mounting screws 2803.

[0062] FIG. 29 - 2901 storage freezer fitted with MCPCBA 2601 powered by driver 2802. Mounting-screws are internal (not shown).

[0063] FIG. 30 represents a storage freezer 3001 fitted with two MCPCBA 2601 modules powered by driver 3002 capable of driving them in parallel.

[0064] FIG. 31 represents a small fruit / food cart table 3101 with tabletop MCPCBA 2601 powered by driver 2702; fruit bowl 3102.

[0065] FIG. 32 represents a covered food cart 3201 with multiple MCPCBA 2601 and a suitable driver 3202; food cover 3203; trays 3204.

[0066] FIG. 33 represents a metal storage box 3301 with cover fitted with MCPCBA 2601 powered by driver 2702.

[0067] FIG. 34 shows an undercabinet application 3401 of MCPCBA 2601 powered by driver 2702.Docket No.: 767-006 PCT

[0068] FIG. 35 (prior art ) are waterproof cable connectors: 3501 i s f emale; 3502 is male.

[0069] FIG. 36 repre sent s a mult i- shelf cabinet with MCPCBA 2601 powered by driver 3608; LEDs face downward; connector pair 3603 ( 3501 / 3502 ) interconnect s MCPCBAs of shelves 3604 -3607 in parallel; each shel f may alternatively be powered by a dedi cated driver ( not shown ).

[0070] FIG. 37 represent s a bread box 3701 with cover f itted with MCPCBA 2601 powered by driver 2702.

[0071] FIG. 38 represent s a bread box 3801 with cover and one s ide wal l f itted with MCPCBA 2 601 powered by an LED driver 3802.

[0072] FIG. 39a, FIG. 39b, and FIG. 39c: FIG. 39a i s a modi f ied shoe shelving 3901 with cutouts 3902 ( top ) and 3903 (middle ). FIG. 39b shows the shelving 3901 with cutouts f itted with MCPCBA 2601. FIG. 39c shows a waterproof connector 3901 ( 3501 / 3502 ) interconnecting the two MCPCBAs powered by an LED driver 3902.

[0073] FIG. 40 shows the MCPCBA 2601 i s used as a bathroom shel f; LEDs on unders ide for s teri li zing toothbrushes 4001 or cosmet ics.

[0074] FIG. 41a shows the MC PCBA 2 601 of FIG. 26 i s used as top surface of a folding table 4 101 with encapsulated LEDs on unders ide ( not shown ); foldable U- legs 4 102; LED driver 2702.

[0075] FIG. 4 1b shows the MCPCBA f olding table 4101 used by individual 4 103 whi le at computer table 4105 to treat toenail fungus 4 104 or provide foot therapy.

[0076] FIG. 42 is a schematic of a Microcontroller-based light controller with Wi- Fi / Bluetooth:; 4301 microcontrol ler; 4302 isolated AC-to-DC 12 V supply; 4304 LED driver; 4305 PWM output; 4306 PWM-to- 0 -10 V converter; 4307 0- 10 V dimming toDocket No.: 767-006 PCTDIM ( + ) 4309; 4311 and 4312 LED are pos itive and negat ive LED drive output s respect ively connected to a male DC j ack 4303; 4310 12VDC to 5 VDC regulator; 4308 OLED di splay; 4313 i s a real-t ime clock.Detailed Description of a Preferred Embodiment

[0077] Turning to the drawings, the preferred embodiment i s i l lustrated and described by re f erence characters that denote s imilar e lements throughout the several views of the instant invent ion.

[0078] The following deta i led de s cript ion present s exemplary embodiments. Various changes may be made without departing f rom the scope of the invent ion as claimed.

[0079] 1. Structural Overview

[0080] In one embodiment, a container system comprise s: a container body having an opening; a l id or cover mounted to the opening; an MCPCB integrated into or forming part of the lid; and a plurality of non-UV LED chips on the MCPCB conf igured to emit light at approximately 4 05 nm for ant imicrobial i l luminat ion. The MCPCB may be aluminum or another thermal ly conductive material and may be ci rcular, rectangular, or oval. In some embodiments, the MCPCB forms the ent ire l id, as in FIGS. 16, 19a, 19b, 20, and 31.

[0081] 2. Electrical Conf igurat ion

[0082] As shown in FIGS. 5, 7, 18, and 23, LEDs may be connected in series, para l lel, or series-paral le l. LEDs a re driven by a DC power supply ( up to 48 VDC ). Power i s del ivered via DC j acks ( FIG. 3 ), waterproo f cable connectors ( FIG. 4 and FIG. 35 ), or USB-type connectors; solar / battery systems may be used for portable or of f -grid appl icat ions. A dimmable LED driver or constant-current supply ( FIG. 13 ) provides current regulat ion. FIG. 42 il lustrates an opt ionalDocket No.: 767-006 PCTmicrocontrol ler-based driver with Wi - Fi / Bluetooth f or mode selection and energy opt imi zation.

[0083] 3. Encapsulat ion and Protect ion

[0084] LED chips and traces may be covered by conformal coating or potted in opt ical -grade s i l icone ( FIGS. 11, 12, 25, 26 ) f or dust and moi sture re s istance ( I P65 or better ). The encapsulant i s transparent, scratch-res i stant, and thermally stable. In some applications LED cover made of polycarbonate plastic may be used.

[0085] 4. Mechanical Integrat ion

[0086] The MCPCBA may be mounted to inner surfaces of lids ( FIGS. 9-15 ) or storage totes / tabletops ( FIGS. 21-31 ) us ing screws or adhes ive, aligning mount ing feature s. Thicker aluminum vers ions ( e. g., 0. 10 -inch ) may serve as standalone tabletops or shelves ( FIGS. 31, 32, 36 ).

[0087] 5. LED Heat Management

[0088] In most embodiments, the MCPCB provides adequate thermal conduction to maintain LED j unct ion temperature within sa fe l imit s. The aluminum substrate act s as a heat spreader, dis s ipating heat acros s the l id or surface. By way of example, a storage-tote cover fabricated f rom a 12 - inch * 24 -inch MCPCB provides a non-LED surface of ~288 in2. An LED array of ~50 W on such a panel exhibit s an estimated 20 ° C j unct ion-temperature ri se above ambient, corresponding to ~ 10 ° C surface ri se of the MCPCBA. Direct metal conduct ion and natural convection keep j unction temperature below manufacturer l imits, maintaining long l i f e, color stability, and cons istent output. In some embodiments, supplementary heat s inks and thermal-interface materials ( T IMs ), thermally conduct ive adhesives, or s il icone potting compounds may further enhance heat trans f er, part icularly in high-density or continuous-operat ion conf igurat ions.Docket No.: 767-006 PCT

[0089] 6. Functional Operation

[0090] Upon activation, the LEDs emit visible light at approximately 405 ± 5 nm, exciting endogenous porphyrins in microorganisms and generating ROS that inactivate pathogens. Unlike UV-C, this process is non-destruct ive to food quality and is safe for continuous use.

[0091] In certain embodiments, the emitted light not only suppresses microbial growth but also stimulates natural defense and antioxidant systems of organic materials such as plant tissues. By promoting mild oxidative signaling, controlled light exposure may help maintain freshness, aroma, and potency of stored foods or cannabis products beyond conventional storage methods.

[0092] In practical terms, the antimicrobial container acts as a preservation enhancer. Instead of allowing harvested cannabis flowers to lose terpene content or sensory vibrancy, the VioShield embodiment provides gentle photonic stimulation that helps retain desirable qualities after harvest.

[0093] Cannabis contamination is often introduced post¬ harvest during handling, packaging, or storage, and low-cost consumer-level decontamination is lacking. Smoking or vaporizing mold-contaminated cannabis poses health risks from spores and mycotoxins. In some embodiments, the glass- j ar configuration of FIG. 15 provides an accessible non-UV antimicrobial solution at the consumer level. Integrated 405 nm illumination inhibits microbial growth on stored cannabis flowers while preserving terpene content, potency, and aroma. This dual action— preventing contamination while maintaining quality— of fers a public-health and consumer-safety benefit.

[0094] 7. Therapeutic and Cosmetic Applications Including Synergistic Use with Essential OilsDocket No.: 767-006 PCT

[0095] The antimicrobial and photobiomodulation (PBM) principles extend into therapeutic and cosmetic domains. In one embodiment, the antimicrobial LED lid assembly, when detached, may include a handle or stand to function as a portable therapy device.

[0096] The 405 nm light penetrates superficial dermal layers, generating controlled ROS sufficient to initiate signaling that promotes antioxidant and healing responses without phototoxicity.

[0097] Representative applications include: reduction of acne; wound healing and pain management (e. g., plantar fasciitis); cutaneous antioxidant stimulation when used with essential oils including clove oil or cannabidiol (CBD) oil; and oral-care illumination, including teeth-whitening and gum-health treatments.

[0098] In some embodiments, the invention exhibits a synergistic interaction between 405 nm illumination and topically applied essential oils. When antioxidant-rich oils— such as CBD oil, clove oil, or other phenolic / terpene formulations— are applied to skin and subsequently exposed to 405 nm light, light-induced ROS act as biochemical triggers enhancing intrinsic antioxidant and anti-inflammatory activities. While these mechanisms represent current scientific understanding of visible-light / antioxidant interactions, the inventors have conducted, and continue to conduct, real-world testing using prototype 405 nm LED fixtures, and preliminary results support the observed synergistic effects.

[0099] In certain embodiments this combined mechanism may: ( 1 ) increase local microcirculation and oxygenation; (2 ) activate endogenous antioxidant enzymes; and (3) amplify pain-relief and anti-inflammatory effects via controlled ROS-Docket No.: 767-006 PCTantioxidant coupl ing. Some oi l components ( e. g., carvacrol, thymol ) may cooperate with vi s ible light to magni fy ROS generat ion; control led ROS can act as a signal ing molecule mediating anti- inf lammatory PBM. I f an es sent ial oi l functions as a photosens iti zer, it may enhance or redirect the light ' s therapeutic e f f ect. Chemical const ituents of es sential oils may al so modi fy s kin optical permeabi lity, enabling deeper or more e f ficient de l ivery of light energy and / or oil compounds to nociceptive or inf lammatory target s. Selectable modes at 4 05 nm, 415 nm, and 850 nm may opt imi ze penet ration and biochemical response.

[0100] In some embodiments, the f olding-table conf igurat ion of FIG. 41a provides a compact and portable plat form for therapeutic i l lumination. The MCPCBA 2601 of FIG. 2 6 forms the top surface of folding table 4 101, with encapsulated LEDs on it s unders ide ( not shown ); foldable U- legs 4 102; LED driver 2702. As shown in FIG. 41b, an individual 4103 seated at computer table 4 105 can il luminate feet / lower extremities for toenai l fungus 4104, circulatory is sues, or pain, while performing other tas ks. The same MCPCB- based folding table may del iver therapy to knees, hands, or back, or for facial / acne t reatment when pos it ioned appropriately. Thi s demonstrates hands -free, multitas king therapeutic applicat ions us ing a portable form f actor.

[0101] In some embodiment s, the MCPCBA may also be attached within an opening of a folding laptop table or s imi lar portable workstation, such that it remains within the scope of this invent ion

[0102] 8. Integration in Furniture and Appl iance s

[0103] MCPCBAs integrate into: storage totes and f ree zers ( FIGS. 27 -30 ); kitchen countertops and food cart s ( FIGS. 31-34 ); bread boxes ( FIGS. 37 -38 ); cabinet s and shoeDocket No.: 767-006 PCTracks (FIGS. 36, 39a-39c) using daisy-chained waterproof connectors; and toothbrush sanitization (FIG. 40). These configurations provide continuous antimicrobial action across consumer and industrial applications.

[0104] 9. Power and Control System

[0105] Control may be manual or automatic via on / off switches, timers, occupancy sensors; microcontrollers with Wi-Fi / Bluetooth (ESP32 or similar); and web / mobile interfaces for brightness and scheduling. Modes include: (a) continuous on, (b) pulsed DC (e. g., 10-90% duty cycle), (c) scheduled daily operation for a preset duration, and (d) off.

[0106] 10. Materials and Safety

[0107] Materials are food-safe, heat-resistant, and compliant with electrical safety guidelines. Systems operate below 48 VDC and may include thermal protection and surge suppression. LEDs are RoHS-compliant; multiple wavelengths may be used for functional or aesthetic customization.

[0108] Conclusion

[0109] Although described with reference to certain embodiments, numerous modifications can be made and still fall within the scope of the invention. No limitation with respect to the specific embodiments disclosed is intended or should be inferred. Each apparatus embodiment has numerous equivalents. The scope of the invention should be determined by the appended claims and their equivalents.

[0110] The invention illustratively disclosed herein suitably may be practiced in the absence of any element which is not specifically disclosed herein.

[0111] The discussion included in this detailed description is intended to serve as a basic description. The reader should be aware that the specific discussion may not explicitly describe all embodiments possible and alternativesDocket No.: 767-006 PCTare implicit. Also, this discussion may not fully explain the generic nature of the invention and may not explicitly show how each feature or element can actually be representative or equivalent elements. Again, these are implicitly included in this disclosure. Where the invention is described in device-oriented terminology, each element of the device implicitly performs a function. It should also be understood that a variety of changes may be made without departing from the essence of the invention. Such changes are also implicitly included in the description. These changes still fall within the scope of this invention.

[0112] Further, each of the various elements of the invention and claims may also be achieved in a variety of manners. This disclosure should be understood to encompass each such variation, be it a variation of any apparatus embodiment, a method embodiment, or even merely a variation of any element of these. Particularly, it should be understood that as the disclosure relates to elements of the invention, the words for each element may be expressed by equivalent apparatus terms even if only the function or result is the same. Such equivalent, broader, or even more generic terms should be considered to be encompassed in the description of each element or action. Such terms can be substituted where desired to make explicit the implicitly broad coverage to which this invention is entitled. It should be understood that all actions may be expressed as a means for taking that action or as an element which causes that action. Similarly, each physical element disclosed should be understood to encompass a disclosure of the action which that physical element facilitates. Such changes and alternative terms are to be understood to be explicitly included in the description.

Claims

Docket No.: 767-006 PCTWhat is claimed is:

1. An antimicrobial container system, comprising:a container body having an opening;a lid or cover configured to engage the opening of the container body;a metal-clad printed circuit board (MCPCB) integrated into or forming at least a portion of the lid or cover; anda plurality of non-ultraviolet light-emitting diode (LED) chips mounted on the MCPCB, the LEDs being configured to emit visible light having a dominant wavelength between 400 nm and 420 nm to inhibit bacterial, fungal, and yeast growth on items contained within the container,wherein the MCPCB functions as both a structural member and a heat sink for the LEDs, andwherein the lid or cover is further configured to operate from a low-voltage direct-current power source including at least one of:(a ) a wall power adapter;(b) a rechargeable battery; or( c) a solar-panel input between 2 V and 48 V coupled directly to an internal driver circuit that regulates current to the LEDs.

2. The system of claim 1, wherein the MCPCB is aluminum or another thermally conductive metal having a thickness between about 0. 05 inch and 0. 10 inch.

3. The system of claim 1, wherein the MCPCB and LEDs are encapsulated within optical-grade silicone to provide dust and moisture resistance and to increase mechanical durability.Docket No.: 767-006 PCT4. The system of claim 1, wherein the lid or cover has a circular, rectangular, or oval configuration adapted to fit a container selected from the group consisting of Mason jars, cooking pots, bread boxes, food storage totes, cosmetic boxes, and shoe cabinets.

5. The system of claim 1, further comprising an electronic control module configured to operate the LEDs in at least one of: (a) continuous illumination; (b) pulsed DC operation having a duty cycle between 10% and 90%; or (c) periodic timed operation for a predetermined number of hours per day.

6. The system of claim 5, wherein the control module includes a ' Wi-Fi or Bluetooth transceiver and is configured to communicate with a mobile or web application for remote operation and scheduling.

7. The system of claim 1, wherein the LEDs further comprise at least one additional wavelength selected from the group consisting of 415 nm blue light and 850 nm infrared light for combined antimicrobial and photobiomodulation effects.

8. The system of claim 1, wherein the internal driver circuit includes a wide-input DC-DC converter or current-limiting stage configured to accommodate voltage variations from photovoltaic modules without damage to the LEDs.Docket No.: 767-006 PCT9. The system of claim 1, wherein the antimicrobial illumination is configured for operation for less than four hours per day to achieve mold inhibition while minimizing energy consumption, thereby enabling exclusive solar-powered operation.

10. The system of claim 1, wherein the lid or cover is detachably connected to the container body to enable use of the lid as a portable antimicrobial or therapeutic illumination device.

11. The system of claim 1, wherein the container system is integrated into a tabletop, countertop, cabinet, or shelving unit, and multiple MCPCB modules are connected in a daisychain configuration using waterproof connectors.

12. The system of claim 1, wherein the antimicrobial and therapeutic illumination system is adapted for off-grid, portable, or disaster-relief use powered exclusively by solar energy.

13. The system of claim 1, wherein the antimicrobial illumination is applied to food, cannabis, or healthcare products to extend shelf life and maintain organoleptic quality without exposure to ultraviolet radiation.

14. The system of claim 1, wherein the LEDs further comprise 660 nm deep red emitters configured to provide photobiomodulation and quality-preservation effects.Docket No.: 767-006 PCT15. The system of claim 1, wherein the MCPCBA is integrated into a folding-table configuration having foldable legs and a top surface formed by the MCPCBA, the LEDs being mounted on an underside of the top surface to deliver therapeutic illumination to a user' s lower extremities.

16. A method for enhancing the therapeutic activity of an essential oil, comprising:topically applying an antioxidant-rich or analgesic essential oil to a portion of skin; andexposing the treated area to non-ultraviolet visible light emitted from at least one LED having a dominant wavelength between 400 nm and 420 nm,wherein the exposure generates a controlled level of reactive oxygen species (ROS) that activate antioxidant or anti-inflammatory biochemical pathways in the skin, thereby enhancing the therapeutic effect of the applied essential oil.

17. The method of claim 16, wherein the essential oil comprises cannabidiol (CBD) oil, clove oil, or a phenolic or terpene-containing formulation.

18. The method of claim 16, wherein the essential oil includes a photosensitizing compound configured to absorb visible light and transfer energy to oxygen molecules, thereby producing reactive oxygen species that augment the therapeutic response.Docket No.: 767-006 PCT19. The method of claim 16, wherein the illumination is provided sequentially or concurrently by LEDs emitting at 405 nm, 415 nm, and 850 nm to achieve differential tissue penetration depths and biochemical responses.

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