TRU-TONE™ LIGHT BULBS logotype

Haining Shengming Illuminate Wiring Co., Ltd.,

Thank you for taking the time to answer our technical questions. Please understand that some of our inquiries are for our information, not necessarily specific to an order. These inquiries are very important for us to help making design decisions that will impact large orders. We acknowledge that some of these requests may seem unusually specific for these types of products. 

We are very interested in establishing a good partnership with a light bulb manufacturer who can best assist with the customization of products.  We have a very specific market, with customers who demand very specific details that we must try to achieve. We understand that these custom requests may require certain M.O.Q. or cost additional.  Thank you for time and patience with our information requests.

This web page is used exclusively to help communicate our manufacturing interests to you and is not a public page.

UPDATED MARCH 24

David Andora
david@davidandora.com
UTC-4 time zone

REPLACEMENT LIGHT BULBS

2 SIZES

C7 / E12
C9 / E17

Bulb-details

Notes for the LED FILAMENT

Regardless of the configuration, the LED filament for all our light bulbs is the most important.

Along with other bulb details, It is very important the LED filament is the highest quality. When we identify and approve of the LED filament specifications (such as color temperature, wattage, LED chip type and filament manufacturer), it is very important to be able to use this same LED filament specifications for all of our bulbs long into the future, so that we can maintain consistency.

Custom Filament Configuration

We are interested in a custom filament configuration in a “Λ” shape as shown above.
With our understanding of newer and current LED filament technology, we have proposed several methods for achieving this shape. After considering all methods, we believe that it may be most practical to use 2 individual filaments, soldered together at the top in this shape.

There is concern that in this configuration,  the LED filaments are as equally bright from most viewing angles. Perhaps a sapphire, rather than ceramic substrate may help. We propose that the LED chips are mounted to the substrate in a way that permits them to shine in an UP and OUT direction as illustrated above, thus making the dim portion of the light aim down towards the base of the light.

This filament configuration is primarily of interest for us to use in transparent-color bulbs, but also offers the potential to improve the opaque color ceramic-type bulbs, eliminating the slight shadow from the standard single LED filament configuration wire.

Due to the smaller filament lengths required to create this configuration with our specifications, we anticipate the requirement for a special custom order from the filament manufacturer. 

color-selection

3 Finishes (2 types of color, 1 with no color coating)

red-ceramic

OPAQUE COLOR
(also called Ceramic-type)

Highest quality paint coating option

Resistant to fading and chips/flakes?

red-transparent

TRANSPARENT COLOR 

Deeply-saturated

Multiple-application of color coating
(minimum of 3)

UV protection?

clear

CLEAR (NO COATING)

LOGO IMPRINT

Small gold imprint on all bulbs

logo-imprint

PACKAGING

25 bulbs
(Packed in various color configurations to be determined later)
2- color printed
natural brown/kraft
corrugated cardboard box

25-box

INITIAL QUANTITY ESTIMATE

150,000 total bulbs, minimum
60/40 split: C7/C9
(more information on specific quantities of each color to be provided later)

INITIAL SAMPLE REQUESTS

All samples specifically related to the LED filament should be 120V
with 2200ºK color temperature
and between 0.54 – 0.64 TOTAL watts for COMBINED 2 filament configuration.

5 sample bulbs are requested:
2 C7 clear
1 C7 opaque color: WHITE color
1 C9 clear
1 C9 opaque color: WHITE color

Please refer to above illustration for LED filament configuration details, size, shape, position.
Standard C7 and C9 glass bulb shapes (below) are ok.