A LED filament device comprising a LED filament , wherein the LED filament comprises a plurality of sources of light , wherein: - the sources of light are configured in an k*l array with k=2 columns ; wherein the array comprises a first set of at least 20 sources of light distributed over the columns ; wherein the sources of light comprise solid state light sources; - in a first column of the first set at least 90% of the total number of sources of light are selected from the group of (i) first sources of light and fifth sources of light , with at least 40% of the total number of sources of light comprising first sources of light , and with 0-60% of the total number of sources of light comprising fifth sources of light ; - in a second column of the first set at least 80% of the total number of sources of light are selected from the group of second sources of light , third sources of light and fourth sources of light , and in the second column of the first set at least 20% of the total number of sources of light comprise second sources of light , at least 20% of the total number of sources of light comprise third sources of light , and at least 20% of the total number of sources of light comprise fourth sources of light ; - the first sources of light are configured to generate first light having a first correlated color temperature CCT1, the second sources of light are configured to generate second light having a second correlated color temperature CCT2, the third sources of light are configured to generate blue third light , the fourth sources of light are configured to generate green fourth light , and the fifth sources of light configured to generate red fifth light ; and - CCT1 is selected from the range of at maximum 2400 K, CCT2 is selected from the range of at least 2700 K, and CCT2-CCT1≥500 K. - the sources of light are configured in an k*l array with k=2 columns ; wherein the array comprises a first set of at least 20 sources of light distributed over the columns ; wherein the sources of light comprise solid state light sources; - in a first column of the first set at least 90% of the total number of sources of light are selected from the group of (i) first sources of light and fifth sources of light , with at least 40% of the total number of sources of light comprising first sources of light , and with 0-60% of the total number of sources of light comprising fifth sources of light ; - in a second column of the first set at least 80% of the total number of sources of light are selected from the group of second sources of light , third sources of light and fourth sources of light , and in the second column of the first set at least 20% of the total number of sources of light comprise second sources of light , at least 20% of the total number of sources of light comprise third sources of light , and at least 20% of the total number of sources of light comprise fourth sources of light ; - the first sources of light are configured to generate first light having a first correlated color temperature CCT1, the second sources of light are configured to generate second light having a second correlated color temperature CCT2, the third sources of light are configured to generate blue third light , the fourth sources of light are configured to generate green fourth light , and the fifth sources of light configured to generate red fifth light ; and - CCT1 is selected from the range of at maximum 2400 K, CCT2 is selected from the range of at least 2700 K, and CCT2-CCT1≥500 K. <EOS>