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 (410,420); wherein the array comprises a first set of at least 20 sources of light distributed over the columns (410,420); 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 (410,420); wherein the array comprises a first set of at least 20 sources of light distributed over the columns (410,420); 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.