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TWINKLE a rheological night light


rheology The study of the behavior of “funny fluids” — “The Four Phenomena”

1

2

3

4

Solid Liquid

Solid Liquid

Rod-Climbing Effect

Open Siphon

The principle

The principle

The principle

The principle

Due to a physical disturbance, a fluid’s viscosity decreases or increases (reversible)

Due to time, a fluid acts more elastic (short times) or more viscous (long times)

When a fluid is spun around a rod, it will move inward, ascending the rod

In a siphon system, a fluid sustains “liquid strings” to self empty

Application

Application

Application

Application

Peanut butter, cornstarch in water

Silly putty, gum

Taking the straw out of a milkshake

Coffee, beverages

*see citations


brainstorm snail trail

damage free

bands mouthguards

gecko

lifestyle

construction

biomimicry adhesive

chemical compounds humans

animals

swim caps

ties safety rubber

self-sticking

elements

chemistry

sports/recreation

biology

stretches exercise mats

putty

liquid solid

bounce sags

RHEOLOGY

properties

magnetic

boxing gear

self-healing conductivity

peanut butter paint

structure support

reusable

honey

fine art building materials

acrylic

storage

mayo

gelatin memory foam

time

cosmetics

beds

packaging

food

color

furniture

bright

children

playing

health

molecular gastronomy

learning

noodles

experimenting

apparel shoes

museums elasticity

space

gum

homes

sole

gravity

forces

architecture

comfort

adaptation

exhibits

hands-on

toys

senses

cooking education

mental training dough

cleaning

insight

Rheology is a concept relevant in everyday lifestyles, from the self-healing property in Silly Putty to the viscosity of peanut butter.


problem statement

How can a night light effectively promote healthier sleeping habits in children? ki ds need at least

over

a n e s t i m at e d

9 HOURS

2 MILLION

30-40%

o f sl eep each night

k id s have sl eep d isor d er s

k i d s d o n o t s le e p e n o u g h

with ag e -sensitive fear s,

K id s h ave n igh t t er r or s

m o s t o fte n , k i d s i m a g i n e

TOUCH

1 HOUR

MONSTERS

is a n impor tant sense

after t h ey fal l asl eep

when scared of the dark

common perception Playing video or computer games in bed is good rest.

*see citations

As long as my kids are in bed, they’re resting well.

Sleeping a couple hours later a night isn’t a big deal.

A lamp will not solve my child’s sleeping problems.


defining the problem ke y i ss u e Children have fears and do not feel safe or secure while trying to fall asleep. DARKNESS ISSUES

- Used to brightness - Up during daylight - Day/night cycles

i m a g i nat i on I S S U E S

- Monsters - Unknown - Avoid pain - Unaware of potential harm

- Loneliness - Being independent - No support - Needs love and care sel f i ss u es

se parat i on I S S U E S

- Away from parents - Always there for them - Love and care - Protect and nurture

- Loss of life - Scared to sleep - Closing eyes - Unable to wake up f ear o f D eath I S S U E S res u lt Child who can’t fall asleep O p p ort u n i t i es Fear of the unknown, loneliness


target audience User profile Girls, Ages 5-8 With knack for personal style

characteristics Likes bright colors Imaginative Enjoys hands-on playtime Feminine style

potential issues • • • • • •

bad sleeping habits phobia of the dark ADD/ADHD bad playing habits restlessness before bed over-attachment to parents

Consumer profile Mother or father of user Middle-upper class Lives in suburban, semi-urban area $70,000+ annual household income Wants to promote healthier sleeping habits in child from an early age


trendboard


parent feedback survey Respondent 1

Respondent 2

MOM, 3 kids — 11, 9, 7 years Suburban home Does not use night lights. Has dimmer switches on lights.

MOM, 2 kids — 3 years, 13 months Suburban home Does not use night lights. Uses lavender oil to aid in sleep.

What’s the most difficult part of getting you children to sleep? “The oldest just wants to stay up. He has bad dreams and is afraid to go to sleep.”

What’s the most difficult part of getting you children to sleep? “My oldest has never had trouble sleeping. But the youngest has had trouble sleeping from day one. He can not seem to just lay down and fall asleep, plus he’s a very light sleeper, so any noise wakes him up. He usually goes to bed before our oldest (they share a room), so if we aren’t quiet enough when going in to put the oldest to sleep, he will wake up and then not be able to fall back asleep.”

What specific reasons do your children give for their fear? “My youngest and oldest like to have a dim light on in their rooms. Neither one likes it too dark because they say it gives them bad dreams. My youngest gets up in the middle of the night and then climbs into bed with us because her room it too dark.” Critiques of night lights on the market — “The fluorescent bulbs from the track lighting get hot if left on all night. Sometimes it is too bright, even on dim.” As a parent, what would you like to see in a night light? “One with a light sensor that dims and then turns off after a period of time and also responds to movement if child wakes up and then goes back off after a period of time. I also don’t want to spend more than $20.”

INSIGHTS

Many parents don’t consider a night light essential item for their children. This may be because they don’t want their children to develop a dependency. This may be because a night light doesn’t seem to serve a purpose or personal needs of the child.

Why don’t you use a night light? “If you got used to having one and required one to sleep at night, then you’d really have trouble sleeping in a place that didn’t have one. You’d either have to bring one with you everywhere you traveled, or you’d not get sleep.” As a parent, what would you like to see in a night light? “Honestly, I have no idea. Since we don’t use one, I would have no idea what I would want in one.”

A night light should be personal, and it should provide comfort for the child. A night light should turn itself off to save energy.


USER/TASK analysis 10-15 minutes

5 minutes

1 minute - 1 hour

2 minutes

1-3 hours

Gets ready for bed

Gets in bed

Worries about dark

Parents reassure

Sleeps

put away t oys , s t op p l ay in g , b r u s h t eet h , b at h c h a n ge c l ot h e s

pa r e n t s tu ck i n, k is s g o o d n ig h t, li ghts ou t

lone ly wi thou t pare nts, fe ar of the u nknown, stay s awake , cannot sle e p

stay s with her, reads story, re-tucks her into bed

tired from distress, help from parents/ night light

15 minutes

5 minutes

1 minute

10 minutes

Too scared to leave

Needs to use toilet

Wakes up

Has nightmares

kid d oes n ot wa n t t o g o wa l k i n t o h a l lway d u e t o fear of t h e u n k n ow n , d a r k

w id e awa k e , paranoi d

scare d, flu ste re d, cannot fall back asle e p, calls/ cri e s for pare nt

Half-conscious, scared, confused cries for parent

5 minutes

5 minutes

5 minutes

Wakes up parents

Uses bathroom

Goes back to room

chil d b ot h er s mom a n d d a d w h i l e t h ey a r e s le e p in g

f e e l s s a f e , c o nfi de nt from pa r e n t ’ s com pany

re ady to go back to sle e p

high stress

low stress

Child’s mood assessment

Gets ready for bed

Gets in bed

Worries about dark

Parents comfort

Sleep

Has nightmares

Wakes up

Uses bathroom


brainstorm child

repetition

resilience

relearning

healing

infant

adolescent

practice diseases/injuries male muscular disorder

disinfectant

cosmetics

age-specific

elderly

female

clean number-based

therapy

3-Dimensional

gender-specific

antibacterial

puzzles

unisex

health

consumer gender roles

hospitals logical stimulation

teaching methods

KID PRODUCTS

schools

language education

olfactory bulb

dental health

smell

Color recognition nerves disabilities

coping/learning

strengthening

sight

illusions

muscle

touch

color

hands-on

sports

swimming

counting

music

understanding

spread germs

engaging texture

water toys floaties creative stimulation

Motor skills

songs sounds amusing challenge fun

museum exhibitions

fins

exhibit specific movable parts

reaction

tupperware instruments

music therapy

cognitive recognition

colored blocks

non-toxic food storage

sound

balls

gear

shapes

taste

interactivity

Molds

memory

Old

senses

perception

special needs

new

candy

education

Informational

fun tootbrush handles

learning

fine arts

installation

insight

Kid products are plentiful in the marketplace, but the best ones provide a sensory, tactile, and hands-on experience.


sensory research The tactile system from

Sensory Integration and the Child: Understanding Hidden Sensory Challenges

a. jean ayres, jeff robbins

“The tactile system is the largest sensory system, and it plays a vital role in human behavior, both physical and mental.”

“Sensory stimulation and motor activity during childhood will ‘mold’ interconnections to form motor processes.”

“There must be light for the visual system to develop the interconnections needed for visual perception.”

Why a tactile, rheological night light? By stimulating the tactile sense with our night light, the child will be able to sense that the stimulus is not dangerous, but comforting. Simultaneously playing, touching, and holding onto Twinkle will help the child develop their motor skills and build more interconnections that will then help develop sensory and motor processes. Not only will Twinkle help with the child’s development, it has been proven that touch reduces stress and decreases anxiety levels. *see citations


market research

Onaroo Night-Light

Woodland Nightlight

Kinderglo Quarter Moon

Munchkin Nightlight

$31.19 Soft lamp that automatically turns off/on in power outages

$7.67 Hedgehog LED battery-operated lamp, duals as an accent

$32.62 Night light that interchanges light colors, soft light, cuddle-able

$17.30 Battery-operated owl night light with ergonomic handle

• Soft LED lights • No light heat

• • • •

• Portable • Automatic shut-off • Lightweight

• • • • •

• No light dimming • Light breaks easily • Cheap internal material

+

• • • •

Three colors available Alarm clock Portable Charging base, rechargeable batteries

Soft three color LED lights No light heat Control over light Portable

• • • • •

One button control Light doesn’t change color Can’t set time for alarm Unable to actually tell time Base always glows

*see citations

On/off button Battery dies quickly No automatic light dimming Four-hour battery life Not portable

• Cheap material


market research

LED Lotus Flower

Boon Glo Nightlight

Indigo the Hedgehog

USB Pearl Shell Nightlight

$1.54 One-handed, soft light, lotus-shaped night light

$78.00 Three illuminated colored balls with included base

$59.95 Cordless night light that changes colors, duals as a play toy

$6.99 Pearl shell night lights powered by USB port, movable shells

Plastic Small Portable Different colors available

• • • •

Color-changing Lights up for 30 minutes Electronic-free Portable

• Color-changing, soft glow • Portable • Soft finish

• Cheap • Rechargeable

Not big enough Does not last long enough Keeps changing color No personal control

• • • •

Expensive Manually-controlled base Breaks often after 3 months Cheap plastic

• • • •

• • • •

+

• • • • —

• • • •

*see citations

Uncomfortable to hold No control of changing colors Expensive Short battery life

Cheap plastic Not portable Heats up Breaks easily


PAIN FACTORS Source using a night light intensity

Onaroo Night-Light

Boon Glo Nightlight

PRICE

PRICE

scale

safety

scale

safety

DURABILITY

DURABILITY

Kinderglo Quarter Moon

Munchkin Nightlight

PRICE

PRICE

scale

safety

scale

awareness

safety

timing

children

adults

intensity Personal connections, so they know the problems more intimately

intensity Little personal connection

awareness Lets parent know if displeased with night light

awareness Knows if child is displeased with night light

timing Use when sleeping

timing Use when purchasing/maintaining

Insight DURABILITY

DURABILITY

Most night lights are either extremely cheap, ineffective, or not durable, or not “kid-friendly” enough (cater only to parents).


benchmarking: audience vs. productivity promotes sleep

OPPORTUNITY

for parents

for kids

promotes activity


benchmarking: ergonomics vs. weight light

OPPORTUNITY

not ergonomic

ergonomic

heavy


benchmarking: tactility vs. complexity multiple units

OPPORTUNITY

Intangible

tactile

single unit


design considerations

price/quality

Security/safety

Parents are willing to invest in a quality night light that ensures a comfortable night of sleep for their child.

Ideally, the light should be easily portable for kids to use in any room in their home. The design objective is to instill security and confidence for children in the dark.

Safe materials and an efficient use of energy are the first priorities.

TWINKLE

twinkle The device promotes healthy sleeping behavior in kids, and it is the perfect compromise between price, quality, security and safety. Parents are seen as a consumer, so many times, they aren’t designed with kids in mind (even though they are the user). Therefore most night lights that are on the market are more focused on decor than the needs of the kids.

consumer consciousness The overall look and feel of the product should cater to the likes of children, but also the standards (regarding safety and quality) of their parents. Colors, form, and ergonomics are taken in complete consideration.


ideation sketches

wisp theme

forms

lampost theme

umbrella theme


concept sketches — star

Charging base forms

star form

context


HUMan factors research

anthropometrics

ideal form

kids’ hands, female *from the national institute of standards and technology

WIDTH

length

grip

age

55

mm

118

mm

58

mm

5

years

57

mm

124

mm

62

mm

6

years

60

mm

130

mm

64

mm

7

years

62

mm

136

mm

67

mm

8

years

*see citations

Iconic five-point star associated with sleep imagery Ergonomic shape fits snuggly in kids’ palms Simple yet distinct and memorable


storyboard 1

2

3

4

5

6

7

8

9

10

11

12


final product twinkle A tactile, sensory, engaging night light that comes in bright white, starry gold, and deep pink. 158 mm x 152 mm x 58 mm (star)


functionality power on/off The pushbutton switch • Two-position devices that are activated with a press-release switch • Internal spring mechanism returns the button to uncompressed position

how to operate • Press down the middle of the star, light turns on • Press down middle again, light turns off • Star automatically turns off after 30 minutes • Light shuts off gradually

electronic configuration Base, back wall Coils charge upon contact

NIGHT LIGHT, ITEM NEEDING ELECTRIC CHARGE

Secondary coil (charge source) Primary coil (charge source)

led lights • Efficient, long-lasting, durable • Directional light sources • Produce little heat in comparison to incandescent bulbs *see citations

charging base • Inductive charging — wireless transfer of energy through magnetic field from base to the individual night lights • Base needs power from external plug, coils need contact


exploded view — Body outer casing Transparent shell encasing star body

Inductive charging coil Wiring enables charging, operates with counterpart base coil

Electric board Incorporates LED electronics

pushbutton switch inner body Houses LED technology and incorporates pushbutton switch

Enables user to easily turn on/off device with one hand


color / material / finish star body color

material soft sweet

$0.06 / ~2.5 cm 3 Thermoplastic rubber, silicone elastomer compound with very low durometer (hardness) *to be used for the product body

cheer happy

injection molding

PANTONE® 101C pure mild

this material does not require a finish

super-elastic plastic (Silicone rubber)

nurture security

PANTONE® 2385C warmth sun

*

Process of shaping plastic by melting it and injecting it into a predesigned mold • Mold created, material injected with screw • Dwelling phase, mold filled with pressurization

clean youth

PANTONE® 11-4202

charging base color trust reliable

material

finish

bpa (bisphenol a) & pvc (polyvinyl chloride) free polypropylene

polypropylene resin

loyalty cool

PANTONE® 12-4302

AVOID deep GREEN "Green may serve as a cue that evokes the motivation to strive for improvement and task mastery, which in turn may facilitate growth.”

avoid deep blue "When the researchers exposed people to blue light at night, this system immediately increased their alertness and performance on tests."

*see citations

$0.15 / ~2.5 cm 3 No hormone disrupters, lead, phthalates, and cancer-causing dioxins

injection molding

soft, tough, cheap (medium quality properties), chemical resistant (commodity resin)


context

it’s flexible. Rheological silicone rubber body provides the user with sensory engagement, making Twinkle a night light like no other.


context


the story She lay in her bed, smiling as daddy finished the story. He started to get up, and she asked him for one more story, hoping to keep the lights on just a little bit longer. Her father smiled and turned to her, reassuring her that nothing bad would happen. He went to her nightstand and picked up a star and handed it to her. She squeezed the star. It illuminated and emitted a soft, comfortable glow. Her father turned on the other stars and then said, “Good night, princess.” His daughter replied, “Good night, daddy.” He turned off the light, gently closed the door, and carefully walked away. She held the star in her hands and smiled at the chubby shape that gave off a comforting light. She held onto the night light and her eyes closed as she fell asleep. Later that night, she awoke. “Potty,” she thought. She looked at the door, hesitant to leave her room, She looked at the star beside her and said, “I can do it!” She held onto the star and marched confidently to the bathroom. “The hallway isn’t that scary anymore,” she thought as she made her way back. She stood in her doorway, gazing into her room. The warm lights of the stars welcomed her back and she felt comforted and safe. She climbed up into her bed and pulled her blanket close to her, happy that she had conquered the shadows in the hallway. She drifted off once again into a deep slumber, with the star in her embrace.


context


final product


acknowledgments Citations, by page RHeology

Functionality

mechanical.illinois.edu

allaboutcircuits.com ednmag.com energystar.gov electronics.howstuffworks.com

Problem Statement deltasleeplabs.com extension.purdue.edu

Sensory Research Sensory Integration and the Child: Understanding Hidden Sensory Challenges (By A. Jean Ayres, Jeff Robbins) parenting.uwex.edu

Market Research amazon.com landofnod.com shop.nordstrom.com hardtofind.com ebay.com

Color/Material/Finish Coloring consumer`s psychology using different shades the role of perception of colors by consumers in consumer decision making process: a micro study of select departmental stores in Mumbai City, India (By Daivata Patil) news.harvard.edu huffingtonpost.com inventables.com wisegeek.org Designing for Moldability, Proto Labs, Inc. oeconline.org

Human Factors Research nist.gov

Š 2013 / eunie kim / chaelin kwon / Jocelyn lam


thank you


Twinkle - Process Book