<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2019-07-30</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000099106</issuerCik>
        <issuerName>TRANS LUX Corp</issuerName>
        <issuerTradingSymbol>TNLX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001784325</rptOwnerCik>
            <rptOwnerName>Yu Yantao</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O TRANS-LUX CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>135 EAST 57TH STREET, 14TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <remarks>Does not include shares held by Unilumin North America. Mr. Yu is the Chief Financial Officer of ROE Visual and the Finance Director of Unilumin USA LLC, subsidiaries of the Unilumin Group Co. Ltd, which controls Unilumin North America.</remarks>

    <ownerSignature>
        <signatureName>Yantao Yu</signatureName>
        <signatureDate>2019-10-18</signatureDate>
    </ownerSignature>
</ownershipDocument>
