the Philips lamps I have seen this. Subjectively, I note: - But I lack faith. is there used in a Deckenbeluchtung only half of the space illuminated! If only for the large plastic cover. For this purpose one can only say in 50 000h something .... So 12 years .... I now famous first time E27 LED Full glass filament bulb 6W COB 360 ° lighting angle cold white 6 Watt 6500k clear 600 lumen cool white clear ..and hope for advancement to more lumens at this.